WO2013173917A1 - High-density electrode-based medical device system - Google Patents
High-density electrode-based medical device system Download PDFInfo
- Publication number
- WO2013173917A1 WO2013173917A1 PCT/CA2013/050350 CA2013050350W WO2013173917A1 WO 2013173917 A1 WO2013173917 A1 WO 2013173917A1 CA 2013050350 W CA2013050350 W CA 2013050350W WO 2013173917 A1 WO2013173917 A1 WO 2013173917A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- elongate member
- electrode
- electrodes
- deployed configuration
- device system
- Prior art date
Links
- 230000008859 change Effects 0.000 claims description 9
- 210000001519 tissue Anatomy 0.000 description 79
- 238000009826 distribution Methods 0.000 description 32
- 238000012545 processing Methods 0.000 description 32
- 238000000034 method Methods 0.000 description 26
- 238000002679 ablation Methods 0.000 description 24
- 230000004913 activation Effects 0.000 description 21
- 239000012530 fluid Substances 0.000 description 18
- 238000013507 mapping Methods 0.000 description 17
- 230000005540 biological transmission Effects 0.000 description 14
- 230000006870 function Effects 0.000 description 14
- 210000004369 blood Anatomy 0.000 description 9
- 239000008280 blood Substances 0.000 description 9
- 210000005246 left atrium Anatomy 0.000 description 9
- 238000004891 communication Methods 0.000 description 7
- 238000001514 detection method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 230000003902 lesion Effects 0.000 description 7
- 230000000638 stimulation Effects 0.000 description 6
- 230000000747 cardiac effect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 210000000056 organ Anatomy 0.000 description 5
- 210000003492 pulmonary vein Anatomy 0.000 description 5
- 206010003658 Atrial Fibrillation Diseases 0.000 description 4
- 230000003213 activating effect Effects 0.000 description 4
- 230000017531 blood circulation Effects 0.000 description 4
- 210000002837 heart atrium Anatomy 0.000 description 4
- 230000015654 memory Effects 0.000 description 4
- 210000004115 mitral valve Anatomy 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000000977 initiatory effect Effects 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 210000005245 right atrium Anatomy 0.000 description 3
- 238000001356 surgical procedure Methods 0.000 description 3
- 239000004642 Polyimide Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 230000004936 stimulating effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 208000020446 Cardiac disease Diseases 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000699666 Mus <mouse, genus> Species 0.000 description 1
- 241000699670 Mus sp. Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007675 cardiac surgery Methods 0.000 description 1
- 238000013153 catheter ablation Methods 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 210000000038 chest Anatomy 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002496 gastric effect Effects 0.000 description 1
- 208000019622 heart disease Diseases 0.000 description 1
- 210000005003 heart tissue Anatomy 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000002847 impedance measurement Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- HLXZNVUGXRDIFK-UHFFFAOYSA-N nickel titanium Chemical compound [Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni] HLXZNVUGXRDIFK-UHFFFAOYSA-N 0.000 description 1
- 229910001000 nickel titanium Inorganic materials 0.000 description 1
- 239000000615 nonconductor Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000012781 shape memory material Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 210000001562 sternum Anatomy 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
- 210000001631 vena cava inferior Anatomy 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B18/1492—Probes or electrodes therefor having a flexible, catheter-like structure, e.g. for heart ablation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/25—Bioelectric electrodes therefor
- A61B5/279—Bioelectric electrodes therefor specially adapted for particular uses
- A61B5/28—Bioelectric electrodes therefor specially adapted for particular uses for electrocardiography [ECG]
- A61B5/283—Invasive
- A61B5/287—Holders for multiple electrodes, e.g. electrode catheters for electrophysiological study [EPS]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6846—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive
- A61B5/6847—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive mounted on an invasive device
- A61B5/6852—Catheters
- A61B5/6858—Catheters with a distal basket, e.g. expandable basket
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00053—Mechanical features of the instrument of device
- A61B2018/0016—Energy applicators arranged in a two- or three dimensional array
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00053—Mechanical features of the instrument of device
- A61B2018/00184—Moving parts
- A61B2018/00202—Moving parts rotating
- A61B2018/00208—Moving parts rotating actively driven, e.g. by a motor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00053—Mechanical features of the instrument of device
- A61B2018/00214—Expandable means emitting energy, e.g. by elements carried thereon
- A61B2018/00267—Expandable means emitting energy, e.g. by elements carried thereon having a basket shaped structure
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
- A61B2018/00345—Vascular system
- A61B2018/00351—Heart
- A61B2018/00357—Endocardium
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/00577—Ablation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B2018/1405—Electrodes having a specific shape
- A61B2018/1407—Loop
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B2018/1405—Electrodes having a specific shape
- A61B2018/1417—Ball
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B2018/1467—Probes or electrodes therefor using more than two electrodes on a single probe
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B2018/1475—Electrodes retractable in or deployable from a housing
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
- A61B2562/02—Details of sensors specially adapted for in-vivo measurements
- A61B2562/0271—Thermal or temperature sensors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
- A61B2562/04—Arrangements of multiple sensors of the same type
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
- A61B2562/04—Arrangements of multiple sensors of the same type
- A61B2562/046—Arrangements of multiple sensors of the same type in a matrix array
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
- A61B5/053—Measuring electrical impedance or conductance of a portion of the body
- A61B5/0538—Measuring electrical impedance or conductance of a portion of the body invasively, e.g. using a catheter
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/25—Bioelectric electrodes therefor
- A61B5/279—Bioelectric electrodes therefor specially adapted for particular uses
- A61B5/28—Bioelectric electrodes therefor specially adapted for particular uses for electrocardiography [ECG]
- A61B5/283—Invasive
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6846—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive
- A61B5/6885—Monitoring or controlling sensor contact pressure
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/02—Details
- A61N1/04—Electrodes
- A61N1/05—Electrodes for implantation or insertion into the body, e.g. heart electrode
- A61N1/056—Transvascular endocardial electrode systems
Definitions
- aspects of this disclosure generally are related to a medical device system including a high-density arrangement of transducers.
- the transducers configured to ablate or sense characteristics of tissue inside a bodily cavity.
- Cardiac surgery was initially undertaken using highly invasive open procedures.
- a sternotomy which is a type of incision in the center of the chest that separates the sternum was typically employed to allow access to the heart.
- cardiac operations are performed using intravascular or percutaneous techniques, where access to inner organs or other tissue is gained via a catheter.
- Intravascular or percutaneous surgeries benefit patients by reducing surgery risk, complications and recovery time.
- the use of intravascular or percutaneous technologies also raises some particular challenges. Medical devices used in intravascular or percutaneous surgery need to be deployed via catheter systems which significantly increase the complexity of the device structure. As well, doctors do not have direct visual contact with the medical devices once the devices are positioned within the body.
- Atrial fibrillation is a disorder in which spurious electrical signals cause an irregular heartbeat.
- Atrial fibrillation has been treated with open heart methods using a technique known as the "Cox-Maze procedure".
- Cox-Maze procedure physicians create specific patterns of lesions in the left or right atria to block various paths taken by the spurious electrical signals.
- lesions were originally created using incisions, but are now typically created by ablating the tissue with various techniques including radio-frequency (RF) energy, microwave energy, laser energy and cryogenic techniques.
- RF radio-frequency
- device systems exhibit enhanced capabilities for the deployment and the activation of various transducers, which may be located within a bodily cavity, such as an intra-cardiac cavity.
- systems or a portion thereof may be percutaneously or intravascularly delivered to position the various transducers within the bodily cavity.
- Various ones of the transducers may be activated to distinguish tissue from blood and may be used to deliver positional information of the device relative to various anatomical features in the bodily cavity, such as the pulmonary veins and mitral valve in an atrium.
- Various ones of the transducers may employ characteristics such as blood flow detection, impedance change detection or deflection force detection to discriminate between blood and tissue.
- Various ones of the transducers may be used to treat tissue within a bodily cavity. Treatment may include tissue ablation by way of non- limiting example.
- Various ones of the transducers may be used to stimulate tissue within the bodily cavity. Stimulation can include pacing by way of non- limiting example.
- a medical device system may be summarized as including a structure that includes a plurality of elongate members, each of the elongate members including a proximal end, a distal end, and an intermediate portion between the proximal and distal ends.
- the medical device system further includes a plurality of electrodes located on the structure, the plurality of electrodes positionable in a bodily cavity.
- a first group of the electrodes is located on a first elongate member of the plurality of elongate members and a second group of the electrodes is located on a second elongate member of the plurality of elongate members.
- the structure is selectively moveable between a delivery configuration in which the structure is sized to be percutaneously delivered to the bodily cavity and a deployed configuration in which the structure is expanded to have a size too large to be percutaneously delivered to the bodily cavity.
- the intermediate portions of the elongate members are angularly arranged with respect to one another about a first axis when the structure is in the deployed configuration.
- Each electrode of the first group of the electrodes is intersected by a first plane having no thickness and each electrode of the second group of the electrodes is intersected by a second plane having no thickness when the structure is in the deployed configuration.
- the first and the second planes are non-parallel planes that intersect each other along a second axis, and at least a first electrode of the plurality of electrodes is intersected by each of the first plane and the second plane when the structure is in the deployed configuration.
- the first electrode is not intersected by each of the first axis and the second axis when the structure is in the deployed configuration.
- the second axis is parallel to the first axis. In some embodiments, the first axis and the second axis are collinear. In some embodiments, the first axis intersects at least one other electrode of the plurality of electrodes that does not include the first electrode when the structure is in the deployed configuration. In some embodiments, the second axis intersects at least one other electrode of the plurality of electrodes that does not include the first electrode when the structure is in the deployed configuration.
- Each of the plurality of elongate members may include a curved portion having a curvature configured to cause the curved portion to extend along at least a portion of a respective curved path, the curvature configured to cause the curved path to intersect the first axis at each of a respective at least two spaced apart locations along the first axis when the structure is in the deployed configuration.
- At least some of the plurality of electrodes may be radially spaced about the first axis when the structure is in the deployed configuration.
- At least some of the plurality of electrodes may be circumferentially arranged about the first axis when the structure is in the deployed configuration.
- the intermediate portion of the first elongate member may overlap the intermediate portion of the second elongate member at a location on the structure passed through by the first axis when the structure is in the deployed configuration.
- the intermediate portion of the first elongate member may overlap the intermediate portion of the second elongate member at each of a first location on the structure passed through by the first axis and a second location on the structure passed through by the second axis when the structure is in the deployed configuration.
- Each of the plurality of elongate members may be arranged to be advanced distal end- first into the bodily cavity when the structure is in the delivery configuration.
- the intermediate portion of the first elongate member may be adjacent the intermediate portion of the second elongate member when the structure is in the deployed configuration.
- the first group of the electrodes may include a pair of adjacent ones of the electrodes located on the first elongate member.
- a region of space associated with a physical portion of the structure may be located between the respective electrodes of the pair of adjacent ones of the electrodes located on the first elongate member, the region of space intersected by the first plane when the structure is in the deployed configuration.
- the respective electrodes of the first group of the electrodes may be spaced along a length of a portion of the first elongate member, the length of the portion of the first elongate member extending along the first elongate member between the proximal and the distal ends of the first elongate member.
- the entirety of the length of the portion of the elongate member may be intersected by the first plane when the structure is in the deployed configuration.
- the first group of the electrodes, the second group of the electrodes, or each of both the first and the second groups of the electrodes may include three or more of the plurality of electrodes.
- the first plane may intersect every electrode that is located on the first elongate member when the structure is in the deployed configuration.
- the second plane may intersect every electrode that is located on the second elongate member when the structure is in the deployed configuration.
- the first group of the electrodes includes the first electrode and the second group of the electrodes does not include the first electrode.
- At least some of the plurality of electrodes may be arranged in a plurality of concentric ringed arrangements when the structure is in the deployed configuration, a first one of the plurality of concentric ringed arrangements having a fewer number of the electrodes than a second one of the plurality of concentric ringed arrangements.
- the first one of the plurality of concentric ringed arrangements may include the first electrode.
- the first elongate member may include an edge interrupted by a notch, the notch located to expose at least a portion of at least a second electrode located on the second elongate member as viewed towards the second electrode along a direction parallel to a direction that the first axis extends along when the structure is in the deployed configuration.
- the second group of the electrodes may include the second electrode. The second electrode may be adjacent the first electrode when the structure is in the deployed configuration.
- the first elongate member may include a surface interrupted by a channel, the channel located to expose at least a portion of at least a second electrode located on the second elongate member as viewed towards the second electrode along a direction parallel to a direction that the first axis extends along when the structure is in the deployed configuration.
- the first elongate member may include a jogged portion, the jogged portion undergoing at least one change in direction as the jogged portion extends between the proximal and the distal ends of the first elongate member.
- the jogged portion may be located to expose at least a portion of at least a second electrode located on the second elongate member as viewed towards the second electrode along a direction parallel to a direction that the first axis extends along when the structure is in the deployed configuration.
- the intermediate portion of each elongate member of the plurality of elongate members includes a front surface and a back surface opposite across a thickness of the elongate member from the front surface. Each intermediate portion further includes a respective pair of side edges of the front surface, the back surface, or both the front surface and the back surface of the intermediate portion.
- each pair of side edges are opposite to one another, each of the side edges of each pair of side edges extending between the proximal end and the distal end of the respective elongate member.
- the first elongate member may be positioned such that a first edge of the pair of side edges of the first elongate member crosses a second side edge of the pair of side edges of the second elongate member of the plurality of elongate members when the structure is in the deployed configuration.
- a portion of the first edge may form a recessed portion of the first elongate member that exposes at least a portion of a second electrode located on a portion of the front surface of the second elongate member as viewed normally to the portion of the front surface of the second elongate member when the structure is in the deployed configuration.
- the second group of the electrodes may include the second electrode. The second electrode may be adjacent the first electrode when the structure is in the deployed configuration.
- each of the respective intermediate portions of the elongate members each may include a thickness, a front surface, and a back surface opposite across the thickness from the front surface.
- the respective intermediate portions of the plurality of elongate members may be arranged front surface-toward-back surface in a stacked array when the structure is in the delivery configuration.
- the structure may further include a proximal portion and a distal portion, each of the proximal and the distal portions including a respective part of each of the plurality of elongate members, the proximal portion of the structure forming a first domed shape and the distal portion of the structure forming a second domed shape when the structure is in the deployed configuration.
- the structure may include a proximal portion and a distal portion with the structure arranged to be advanced distal portion first into the bodily cavity when the structure is in the delivery configuration.
- the proximal portion of the structure forms a first domed shape and the distal portion of the structure forms a second domed shape when the structure is in the deployed configuration, the proximal and the distal portions of the structure arranged in a clam shell configuration when the structure is in the deployed configuration.
- the intermediate portions of at least some of the plurality of elongate members are, when the structure is in the deployed configuration, sufficiently spaced from the first axis to position each of at least some of the plurality of the electrodes at respective locations suitable for contact with a tissue wall of the bodily cavity.
- a medical device system may be summarized as including a plurality of transducers positionable in a bodily cavity and a structure on which the transducers are located.
- the structure includes a plurality of elongate members, each of the elongate members including a proximal end, a distal end, an intermediate portion positioned between the proximal end and the distal end, and a thickness.
- Each intermediate portion includes a front surface and a back surface opposite across the thickness of the elongate member from the front surface, and each intermediate portion further includes a respective pair of side edges of the front surface, the back surface, or both the front surface and the back surface.
- each pair of side edges are opposite to one another, and the side edges of each pair of side edges extend between the proximal end and the distal end of the respective elongate member.
- the structure is selectively moveable between a delivery configuration in which the structure is sized for percutaneous delivery to a bodily cavity, and a deployed configuration in which the structure is sized too large for percutaneous delivery to the bodily cavity.
- At least a first elongate member of the plurality of elongate members is positioned such that a first edge of the pair of side edges of the first elongate member crosses a second side edge of the pair of side edges of a second elongate member of the plurality of elongate members when the structure is in the deployed configuration.
- a portion of the first edge forms a recessed portion of the first elongate member that exposes at least a portion of a transducer located on a portion of the front surface of the second elongate member as viewed normally to the portion of the front surface of the second elongate member when the structure is in the deployed configuration.
- the recessed portion of the first elongate member may form at least a portion of a notch in the intermediate portion of the first elongate member, the notch extending towards a second edge of the pair of side edges of the first elongate member.
- the first elongate member may include a jogged portion, the jogged portion undergoing at least one change in direction as the jogged portion extends between the proximal and the distal ends of the first elongate member, the recessed portion of the first elongate member forming at least part of the jogged portion.
- the intermediate portions of the elongate members may be angularly arranged with respect to one another about an axis when the structure is in the deployed configuration. At least some of the plurality of transducers may be radially spaced about an axis when the structure is in the deployed configuration. At least some of the plurality of transducers may be circumferentially arranged about an axis when the structure is in the deployed configuration. At least some of the plurality of transducers may be arranged in a plurality of concentric ringed arrangements when the structure is in the deployed configuration, a first one of the plurality of concentric ringed arrangements having a fewer number of the transducers than a second one of the plurality of concentric ringed arrangements.
- the first one of the plurality of concentric ringed arrangements may not include any of the plurality of transducers located on the second elongate member.
- the second one of the plurality of concentric ringed arrangements may include the transducer located on the portion of the front surface of the second elongate member.
- the first one of the plurality of concentric ringed arrangements may be adjacent the second one of the plurality of concentric ringed arrangements.
- Each of the plurality of elongate members may be arranged to be advanced distal end-first into the bodily cavity when the structure is in the delivery configuration.
- the respective intermediate portions of the plurality of elongate members may be arranged front surface-toward-back surface in a stacked array when the structure is in the delivery
- the structure may further include a proximal portion and a distal portion, each of the proximal and the distal portions including a respective part of each of the plurality of elongate members, the proximal portion of the structure forming a first domed shape and the distal portion of the structure forming a second domed shape when the structure is in the deployed configuration.
- the structure may include a proximal portion and a distal portion, with the structure arranged to be advanced distal portion first into the bodily cavity when the structure is in the delivery configuration.
- the proximal portion of the structure forms a first domed shape and the distal portion of the structure forms a second domed shape when the structure is in the deployed configuration, the proximal and the distal portions of the structure arranged in a clam shell configuration when the structure is in the deployed configuration.
- a medical device system may be summarized as including a plurality of electrodes positionable in a bodily cavity and a structure on which the electrodes are located.
- the structure includes a plurality of elongate members.
- the plurality of electrodes include a plurality of sets of the electrodes, each respective set of the electrodes located on a respective one of the elongate members.
- Each of the elongate members includes a proximal end, a distal end, an intermediate portion positioned between the proximal end and the distal end, and a thickness.
- Each intermediate portion includes a front surface and a back surface opposite across the thickness of the elongate member from the front surface.
- the structure is selectively moveable between a delivery configuration in which the structure is sized for percutaneous delivery to the bodily cavity and a deployed configuration in which the structure is sized too large for percutaneous delivery to the bodily cavity.
- a first elongate member of the plurality of elongate members is positioned such that a portion of the front surface of the first elongate member overlaps a portion of the respective front surface of each of at least a second elongate member of the plurality of elongate members as viewed normally to the portion of the front surface of the first elongate member when the structure is in the deployed configuration.
- At least a first electrode of the plurality of electrodes is located at least on the portion of the front surface of the first elongate member, and the portion of the front surface of the second elongate member faces the back surface of the first elongate member at least when the structure is in the deployed configuration.
- Each of the front surfaces of the plurality of elongate members may face an outward direction of the structure when the structure is in the deployed configuration.
- the portion of the front surface of the second elongate member may face the back surface of the first elongate member when the structure is in the delivery configuration.
- the portion of the front surface of the second elongate member may contact the back surface of the first elongate member when the structure is in the deployed configuration.
- Each electrode in each set of the plurality of electrodes may be located solely on the front surface of a respective one of the elongate members.
- the intermediate portions of the elongate members may be angularly arranged with respect to one another about an axis when the structure is in the deployed configuration. At least some of the plurality of electrodes may be radially spaced about the axis when the structure is in the deployed configuration. At least some of the plurality of electrodes may be
- the intermediate portion of the first elongate member may cross the intermediate portion of the second elongate member at a location on the structure intersected by the axis when the structure is in the deployed configuration.
- Each of the portion of the front surface of the first elongate member and the portion of the front surface of the second elongate member may be intersected by the axis when the structure is in the deployed configuration.
- the intermediate portion of the first elongate member may be adjacent the intermediate portion of the second elongate member when the structure is in the deployed configuration.
- At least one electrode of the plurality of electrodes may be intersected by the axis when the structure is in the deployed configuration.
- a particular electrode of the at least one electrode may be located adjacently to the first electrode on the portion of the front surface of the first elongate member. At least some of the plurality of electrodes may be arranged in a plurality of concentric ringed arrangements when the structure is in the deployed configuration, a first one of the plurality of concentric ringed arrangements having a fewer number of the electrodes than a second one of the plurality of concentric ringed arrangements. The first one of the plurality of concentric ringed arrangements may include the first electrode.
- Each intermediate portion may further include a respective pair of side edges of the front surface, the back surface, or both the front surface and the back surface of the intermediate portion.
- the side edges of each pair of side edges are opposite to one another, and each of the side edges of each pair of side edges extend between the proximal end and the distal end of the respective elongate member.
- the first elongate member may be positioned such that a first edge of the pair of side edges of the first elongate member crosses a second side edge of the pair of side edges of the second elongate member when the structure is in the deployed configuration.
- a portion of the first edge may form a recessed portion of the first elongate member that exposes at least a portion of a second electrode located on the portion of the front surface of the second elongate member as viewed normally to the portion of the front surface of the second elongate member when the structure is in the deployed configuration.
- Each of the plurality of elongate members may be arranged to be advanced distal end-first into the bodily cavity when the structure is in the delivery configuration.
- the respective intermediate portions of the plurality of elongate members may be arranged front surface-toward-back surface in a stacked array when the structure is in the delivery
- the structure may further include a proximal portion and a distal portion, each of the proximal and the distal portions including a respective part of each of the plurality of elongate members.
- the proximal portion of the structure forms a first domed shape and the distal portion of the structure forms a second domed shape when the structure is in the deployed configuration.
- the structure may include a proximal portion and a distal portion, with the structure arranged to be advanced distal portion first into the bodily cavity when the structure is in the delivery configuration.
- the proximal portion of the structure forms a first domed shape and the distal portion of the structure forms a second domed shape when the structure is in the deployed configuration, the proximal and the distal portions of the structure arranged in a clam shell configuration when the structure is in the deployed configuration.
- a medical device system may be summarized as including a plurality of electrodes positionable in a bodily cavity and a structure on which the electrodes are located.
- the structure includes a plurality of elongate members, each of the elongate members including a proximal end, a distal end, an intermediate portion positioned between the proximal end and the distal end, and a thickness.
- Each intermediate portion includes a front surface and a back surface opposite across the thickness of the elongate member from the front surface.
- Each intermediate portion further includes a respective pair of side edges of the front surface, the back surface, or both the front surface and the back surface. The side edges of each pair of side edges opposite to one another.
- each pair of side edges extend between the proximal end and the distal end of the respective elongate member.
- the structure is selectively moveable between a delivery configuration in which the structure is sized for percutaneous delivery to a bodily cavity and a deployed configuration in which the structure is sized too large for percutaneous delivery to the bodily cavity.
- At least a first elongate member of the plurality of elongate members is positioned such that a first side edge of the pair of side edges of the first elongate member crosses a first side edge of the pair of side edges of a second elongate member of the plurality of elongate members at a first location and crosses a second side edge of the pair of side edges of the second elongate member at a second location when the structure is in the deployed configuration.
- Each of one or more of the plurality of electrodes is wholly located on a portion of the second elongate member, the portion of the second elongate member located between a first transverse line and a second transverse line when the structure is in the deployed configuration, the first transverse line extending across a first width of the second elongate member at the first location, and the second transverse line extending across a second width of the second elongate member at the second location.
- the first width may be different than the second width.
- the first width and the second width may be widths of the front surface of the second elongate member.
- the one or more electrodes may include two or more of the plurality of electrodes. At least a portion of an electrode of the plurality of electrodes may be located on the portion of the second elongate member.
- a first electrode of the one or more of the plurality of electrodes may include a first electrode edge that forms part of a periphery of an electrically conductive surface of the first electrode, the first electrode edge arranged to follow a portion of the first side edge of the first elongate member between the first location and the second location when the structure is in the deployed configuration.
- the first electrode may include a second electrode edge opposite across the electrically conductive surface from the first electrode edge, the second electrode edge forming part of the periphery of the electrically conductive surface of the first electrode.
- the second electrode edge may be arranged to follow a portion of one of the pair of side edges of the second elongate member.
- the intermediate portions of the elongate members may be angularly arranged with respect to one another about an axis when the structure is in the deployed configuration. At least some of the plurality of electrodes may be radially spaced about the axis when the structure is in the deployed configuration. At least some of the plurality of electrodes may be
- the intermediate portion of the first elongate member may cross the intermediate portion of the second elongate member at a location on the structure intersected by the axis when the structure is in the deployed configuration.
- the intermediate portion of the first elongate member may be adjacent the intermediate portion of the second elongate member when the structure is in the deployed configuration.
- a particular one of the plurality of electrodes may be intersected by the axis when the structure is in the deployed configuration.
- the one or more electrodes may include a first electrode, the first electrode located on the structure adjacent the particular one of the plurality of electrodes when the structure is in the deployed configuration.
- the one or more electrodes may include a first electrode, and at least some of the plurality of electrodes may be arranged in a plurality of concentric ringed arrangements when the structure is in the deployed configuration.
- a first one of the plurality of concentric ringed arrangements has a fewer number of the electrodes than a second one of the plurality of concentric ringed arrangements.
- the first one of the plurality of concentric ringed arrangements may include the first electrode.
- a portion of the first side edge of the first elongate member extending between the first location and the second location may form a recessed portion of the first elongate member that exposes at least a portion of a particular electrode of the one or more electrodes as viewed normally to a surface of the exposed portion of the particular electrode of the one or more electrodes when the structure is in the deployed configuration.
- Each of the plurality of elongate members may be arranged to be advanced distal end-first into the bodily cavity when the structure is in the delivery configuration.
- the respective intermediate portions of the plurality of elongate members may be arranged front surface-toward-back surface in a stacked array when the structure is in the delivery
- the structure may further include a proximal portion and a distal portion, each of the proximal and the distal portions including a respective part of each of the plurality of elongate members.
- the proximal portion of the structure forms a first domed shape and the distal portion of the structure forms a second domed shape when the structure is in the deployed configuration.
- the structure may include a proximal portion and a distal portion, with the structure arranged to be advanced distal portion first into the bodily cavity when the structure is in the delivery configuration.
- the proximal portion of the structure forms a first domed shape and the distal portion of the structure forms a second domed shape when the structure is in the deployed configuration, the proximal and the distal portions of the structure arranged in a clam shell configuration when the structure is in the deployed configuration.
- Figure 1 is a schematic representation of a transducer-activation system according to example embodiments, the transducer-activation system including a data processing device system, an input-output device system, and a memory device system.
- Figure 2 is a cutaway diagram of a heart showing a transducer-based device percutaneously placed in a left atrium of the heart according to example embodiments.
- Figure 3A is a partially schematic representation of a medical device system according to example embodiments, the medical device system including a data processing device system, an input-output device system, a memory device system, and a transducer-based device having a plurality of transducers and an expandable structure shown in a delivery or unexpanded configuration.
- Figure 3B is the medical device system of Figure 3A with the expandable structure shown in a deployed or expanded configuration.
- Figure 3C is a representation of the expandable structure of the medical device system of Figure 3A in the deployed configuration, as viewed from a different viewing angle than that employed in Figure 3B.
- Figure 3D is a plan view of the expandable structure of Figure 3C.
- Figure 3E is an enlarged view of a portion of the expandable structure of Figure
- Figure 3F is a representation of an expandable structure of a transducer-based device system according to various example embodiments, the expandable structure in a deployed configuration.
- Figure 3G is a plan view of the expandable structure of Figure 3F.
- Figure 3H is a perspective view of two of the elongate members of the expandable structure of Figures 3F and 3G, each of the elongate members shown in a flattened configuration.
- Figure 31 is an enlarged view of a portion of the expandable structure of Figure
- Figure 3J is a plan view of the expandable structure of Figure 3F with an elongate member of the structure omitted for clarity.
- Figure 3K is a perspective view of two elongate members of an expandable structure of a transducer-based device system according to various embodiments, each of the elongate members shown in a flattened configuration.
- Figure 4 is a schematic representation of a transducer-based device that includes a flexible circuit structure according to at least one example embodiment.
- the phrase “at least” is used herein at times to emphasize the possibility that other elements can exist besides those explicitly listed. However, unless otherwise explicitly noted (such as by the use of the term “only”) or required by context, non-usage herein of the phrase “at least” does not exclude the possibility that other elements can exist besides those explicitly listed.
- activation of at least transducer A includes activation of transducer A by itself, as well as activation of transducer A and activation of one or more other additional elements besides transducer A. In the same manner, the phrase,
- activation of transducer A includes activation of transducer A by itself, as well as activation of transducer A and activation of one or more other additional elements besides transducer A.
- activation of only transducer A includes only activation of transducer A, and excludes activation of any other elements besides transducer A.
- ablation should be understood to include any disruption to certain properties of tissue. Most commonly, the disruption is to the electrical conductivity and is achieved by heating, which can be generated with resistive or radio- frequency (RF) techniques for example. Other properties, such as mechanical or chemical, and other means of disruption, such as optical, are included when the term “ablation” is used.
- RF radio- frequency
- fluid should be understood to include any fluid that can be contained within a bodily cavity or can flow into or out of, or both into and out of a bodily cavity via one or more bodily openings positioned in fluid communication with the bodily cavity.
- fluid such as blood will flow into and out of various intra-cardiac cavities (e.g. , a left atrium or right atrium).
- bodily opening should be understood to include a naturally occurring bodily opening or channel or lumen; a bodily opening or channel or lumen formed by an instrument or tool using techniques that can include, but are not limited to, mechanical, thermal, electrical, chemical, and exposure or illumination techniques; a bodily opening or channel or lumen formed by trauma to a body; or various combinations of one or more of the above.
- Various elements having respective openings, lumens or channels and positioned within the bodily opening e.g. , a catheter sheath or catheter introducer
- These elements may provide a passageway through a bodily opening for various devices employed in various embodiments.
- bodily cavity as used in this disclosure should be understood to mean a cavity in a body.
- the bodily cavity may be a cavity provided in a bodily organ (e.g., an intra-cardiac cavity of a heart).
- tissue as used in some embodiments in this disclosure should be understood to include any surface-forming tissue that is used to form a surface of a body or a surface within a bodily cavity, a surface of an anatomical feature or a surface of a feature associated with a bodily opening positioned in fluid communication with the bodily cavity.
- the tissue can include part or all of a tissue wall or membrane that defines a surface of the bodily cavity.
- the tissue can form an interior surface of the cavity that surrounds a fluid within the cavity.
- tissue can include tissue used to form an interior surface of an intra-cardiac cavity such as a left atrium or right atrium.
- the word tissue can refer to a tissue having fluidic properties (e.g., blood).
- transducer should be interpreted broadly as any device capable of distinguishing between fluid and tissue, sensing temperature, creating heat, ablating tissue, measuring electrical activity of a tissue surface, stimulating tissue, or any combination thereof.
- a transducer can convert input energy of one form into output energy of another form.
- a transducer can include an electrode that functions as, or as part of, a sensing device included in the transducer, an energy delivery device included in the transducer, or both a sensing device and an energy delivery device included in the transducer.
- a transducer may be constructed from several parts, which may be discrete components or may be integrally formed.
- activation should be interpreted broadly as making active a particular function as related to various transducers disclosed in this disclosure. Particular functions can include, but are not limited to, tissue ablation, sensing
- activation of a tissue ablation function of a particular transducer is initiated by causing energy sufficient for tissue ablation from an energy source device system to be delivered to the particular transducer.
- the activation can be deemed to be initiated when the particular transducer causes a temperature sufficient for the tissue ablation due to the energy provided by the energy source device system.
- the activation can last for a duration of time concluding when the ablation function is no longer active, such as when energy sufficient for the tissue ablation is no longer provided to the particular transducer.
- the activation period can be deemed to be concluded when the temperature caused by the particular transducer is below the temperature sufficient for the tissue ablation.
- the word "activation” can merely refer to the initiation of the activating of a particular function, as opposed to referring to both the initiation of the activating of the particular function and the subsequent duration in which the particular function is active.
- the phrase or a phrase similar to "activation initiation" may be used.
- program in this disclosure should be interpreted as a set of instructions or modules that can be executed by one or more components in a system, such as a controller system or data processing device system, in order to cause the system to perform one or more operations.
- the set of instructions or modules can be stored by any kind of memory device, such as those described subsequently with respect to the memory device system 130 shown in Figure 1.
- instructions or modules of a program may be described as being configured to cause the performance of a function.
- the phrase "configured to" in this context is intended to include at least (a) instructions or modules that are presently in a form executable by one or more data processing devices to cause performance of the function (e.g., in the case where the instructions or modules are in a compiled and unencrypted form ready for execution), and (b) instructions or modules that are presently in a form not executable by the one or more data processing devices, but could be translated into the form executable by the one or more data processing devices to cause performance of the function (e.g., in the case where the instructions or modules are encrypted in a non-executable manner, but through performance of a decryption process, would be translated into a form ready for execution).
- the word "module" can be defined as a set of instructions.
- device and the phrase “device system” both are intended to include one or more physical devices or subdevices (e.g. , pieces of equipment) that interact to perform one or more functions, regardless of whether such devices or subdevices are located within a same housing or different housings.
- device system both are intended to include one or more physical devices or subdevices (e.g. , pieces of equipment) that interact to perform one or more functions, regardless of whether such devices or subdevices are located within a same housing or different housings.
- the phrase “catheter device” could equivalently be referred to as a “catheter device system”.
- the term "adjacent" is used in this disclosure to refer to objects that do not have another substantially similar object between them.
- object A and object B could be considered adjacent if they contact each other (and, thus, it could be considered that no other object is between them), or if they do not contact each other, but no other object that is substantially similar to object A, object B, or both objects A and B, depending on context, is between them.
- phrase "in response to” might be used in the following context, where an event A occurs in response to the occurrence of an event B.
- such phrase can include, for example, that at least the occurrence of the event B causes or triggers the event A.
- FIG. 1 schematically illustrates a system 100 for activating transducers, according to some embodiments.
- the system 100 includes a data processing device system 110, an input-output device system 120, and a processor- accessible memory device system 130.
- the processor- accessible memory device system 130 and the input-output device system 120 are communicatively connected to the data processing device system 110.
- the data processing device system 110 includes one or more data processing devices that implement methods by controlling or interacting with various structural components described herein, including, but not limited to, various structural components illustrated in the other Figures 2-4.
- Each of the phrases “data processing device”, “data processor”, “processor”, and “computer” is intended to include any data processing device, such as a central processing unit (“CPU"), a desktop computer, a laptop computer, a mainframe computer, a tablet computer, a personal digital assistant, a cellular phone, and any other device for processing data, managing data, or handling data, whether implemented with electrical, magnetic, optical, biological components, or otherwise.
- CPU central processing unit
- the memory device system 130 includes one or more processor- accessible memory devices configured to store information, including the information needed to execute the methods implemented by the data processing device system 110.
- the memory device system 130 may be a distributed processor- accessible memory device system including multiple processor-accessible memory devices communicatively connected to the data processing device system 110 via a plurality of computers and/or devices.
- the memory device system 130 need not be a distributed processor- accessible memory system and, consequently, may include one or more processor-accessible memory devices located within a single housing or data processing device.
- processor-accessible memory and “processor-accessible memory device” is intended to include any processor-accessible data storage device, whether volatile or nonvolatile, electronic, magnetic, optical, or otherwise, including but not limited to, registers, floppy disks, hard disks, Compact Discs, DVDs, flash memories, ROMs, and RAMs.
- processor-accessible memory and “processor- accessible memory device” is intended to include a non-transitory computer-readable storage medium.
- the memory device system 130 can be considered a non- transitory computer- readable storage medium system.
- the phrase "communicatively connected” is intended to include any type of connection, whether wired or wireless, between devices, data processors, or programs in which data may be communicated. Further, the phrase “communicatively connected” is intended to include a connection between devices or programs within a single data processor, a connection between devices or programs located in different data processors, and a connection between devices not located in data processors at all.
- the memory device system 130 is shown separately from the data processing device system 110 and the input-output device system 120, one skilled in the art will appreciate that the memory device system 130 may be located completely or partially within the data processing device system 110 or the input-output device system 120.
- the input-output device system 120 is shown separately from the data processing device system 110 and the memory device system 130, one skilled in the art will appreciate that such system may be located completely or partially within the data processing system 110 or the memory device system 130, depending upon the contents of the input-output device system 120. Further still, the data processing device system 110, the input-output device system 120, and the memory device system 130 may be located entirely within the same device or housing or may be separately located, but communicatively connected, among different devices or housings. In the case where the data processing device system 110, the input-output device system 120, and the memory device system 130 are located within the same device, the system 100 of Figure 1 can be implemented by a single application- specific integrated circuit (ASIC) in some embodiments.
- ASIC application- specific integrated circuit
- the input-output device system 120 may include a mouse, a keyboard, a touch screen, another computer, or any device or combination of devices from which a desired selection, desired information, instructions, or any other data is input to the data processing device system 110.
- the input-output device system may include a user-activatable control system that is responsive to a user action.
- the input-output device system 120 may include any suitable interface for receiving information, instructions or any data from other devices and systems described in various ones of the embodiments. In this regard, the input-output device system 120 may include various ones of other systems described in various embodiments.
- the input-output device system 120 may include at least a portion of a transducer-based device system.
- the phrase "transducer-based device system" is intended to include one or more physical systems that include one or more physical devices that include transducers.
- the input-output device system 120 also may include an image generating device system, a display device system, a processor-accessible memory device, or any device or combination of devices to which information, instructions, or any other data is output by the data processing device system 110.
- the input-output device system 120 includes a processor-accessible memory device, such memory device may or may not form part or all of the memory device system 130.
- the input-output device system 120 may include any suitable interface for outputting information, instructions or data to other devices and systems described in various ones of the embodiments.
- the input-output device system may include various other devices or systems described in various embodiments.
- the input- output device system may include a portion of a transducer-based device system.
- transducer-based devices are described herein. Some of the described devices are medical devices that are percutaneously or intravascularly deployed. Some of the described devices are moveable between a delivery or unexpanded configuration in which a portion of the device is sized for passage through a bodily opening leading to a bodily cavity, and an expanded or deployed configuration in which the portion of the device has a size too large for passage through the bodily opening leading to the bodily cavity.
- An example of an expanded or deployed configuration is when the portion of the transducer-based device is in its intended-deployed-operational state inside the bodily cavity.
- Another example of the expanded or deployed configuration is when the portion of the transducer-based device is being changed from the delivery configuration to the intended-deployed-operational state to a point where the portion of the device now has a size too large for passage through the bodily opening leading to the bodily cavity.
- the device includes transducers that sense characteristics (e.g. , convective cooling, permittivity, force) that distinguish between fluid, such as a fluidic tissue (e.g. , blood), and tissue forming an interior surface of the bodily cavity.
- sensed characteristics can allow a medical device system to map the cavity, for example using positions of openings or ports into and out of the cavity to determine a position or orientation (i. e. , pose), or both of the portion of the device in the bodily cavity.
- the described devices are capable of ablating tissue in a desired pattern within the bodily cavity.
- the devices are capable of sensing characteristics (e.g. , electrophysiological activity) indicative of whether an ablation has been successful.
- the devices are capable of providing stimulation (e.g., electrical stimulation) to tissue within the bodily cavity. Electrical stimulation may include pacing.
- Figure 2 shows a transducer-based device 200, which may be all or part of a medical device system, useful in investigating or treating a bodily organ, for example a heart 202, according to some example embodiments.
- Transducer-based device 200 can be percutaneously or intravascularly inserted into a portion of the heart 202, such as an intra-cardiac cavity like left atrium 204.
- the transducer-based device 200 is part of a catheter 206 inserted via the inferior vena cava 208 and penetrating through a bodily opening in transatrial septum 210 from right atrium 212. In other embodiments, other paths may be taken.
- Catheter 206 includes an elongated flexible rod or shaft member appropriately sized to be delivered percutaneously or intravascularly. Various portions of catheter 206 may be steerable. Catheter 206 may include one or more lumens (not shown). The lumen(s) may carry one or more communications or power paths, or both. For example, the lumens(s) may carry one or more electrical conductors 216 (two shown in this embodiment). Electrical conductors 216 provide electrical connections to device 200 that are accessible externally from a patient in which the transducer-based device 200 is inserted.
- Transducer-based device 200 includes a frame or structure 218 which assumes an unexpanded configuration for delivery to left atrium 204.
- Structure 218 is expanded (i. e. , shown in a deployed or expanded configuration in Figure 2) upon delivery to left atrium 204 to position a plurality of transducers 220 (three called out in Figure 2) proximate the interior surface formed by tissue 222 of left atrium 204.
- the transducers 220 are used to sense a physical characteristic of a fluid (i.e. , blood) or tissue 222, or both, that may be used to determine a position or orientation (i. e., pose), or both, of a portion of a device 200 within, or with respect to left atrium 204.
- transducers 220 may be used to determine a location of pulmonary vein ostia (not shown) or a mitral valve 226, or both. In some embodiments, at least some of the transducers 220 may be used to selectively ablate portions of the tissue 222. For example, some of the transducers 220 may be used to ablate a pattern or path around various ones of the bodily openings, ports or pulmonary vein ostia, for instance to reduce or eliminate the occurrence of atrial fibrillation.
- FIGS 3A, 3B, 3C, 3D and 3E show a transducer-based device system (i. e., a portion thereof shown schematically) that includes a transducer-based device 300 according to one illustrated embodiment.
- Transducer-based device 300 includes a plurality of elongate members 304 (three called out in each of Figures 3A and 3B, and three are called out in each of Figures 3C, 3D and 3E as 304a, 304b and 304c) and a plurality of transducers 306 (three called out in Figure 3A, three called out in Figure 3B as 306a, 306b and 306c, and seven called out in each of Figures 3C and 3D, six of the seven identified as 306q, 306r, 306s, 306t, 306u and 306v).
- the plurality of transducers 306 are positionable within a bodily cavity.
- the transducers 306 are able to be positioned in a bodily cavity by movement into, within, or into and within the bodily cavity, with or without a change in a configuration of the plurality of transducers 306.
- the plurality of transducers 306 are arrangeable to form a two- or three-dimensional distribution, grid or array of the transducers capable of mapping, ablating or stimulating an inside surface of a bodily cavity or lumen without requiring mechanical scanning.
- the plurality of transducers 306 are arranged in a distribution receivable in a bodily cavity (not shown in Figure 3A). As shown for example, in Figure 3 A, the plurality of transducers 306 are arranged in a distribution suitable for delivery to a bodily cavity (not shown in Figure 3A). (It should also be noted, for example, that the expanded or deployed
- the elongate members 304 are arranged in a frame or structure 308 that is selectively movable between an unexpanded or delivery configuration (i. e., as shown in Figure 3 A) and an expanded or deployed configuration (i. e., as shown in Figure 3B) that may be used to position elongate members 304 against a tissue surface within the bodily cavity or position the elongate members 304 in the vicinity of or in contact with the tissue surface.
- structure 308 has a size in the unexpanded or delivery configuration suitable for percutaneous delivery through a bodily opening (i. e., via catheter sheath 312, not shown in Figure 3B) to the bodily cavity.
- structure 308 has a size in the expanded or deployed configuration too large for percutaneous delivery through a bodily opening (i. e., via catheter sheath 312) to the bodily cavity.
- the elongate members 304 may form part of a flexible circuit structure (i. e. , also known as a flexible printed circuit board (PCB) circuit).
- the elongate members 304 can include a plurality of different material layers, and each of the elongate members 304 can include a plurality of different material layers.
- the structure 308 can include a shape memory material, for instance Nitinol.
- the structure 308 can include a metallic material, for instance stainless steel, or non-metallic material, for instance polyimide, or both a metallic and non metallic material by way of non-limiting example.
- a metallic material for instance stainless steel
- non-metallic material for instance polyimide
- the incorporation of a specific material into structure 308 may be motivated by various factors including the specific requirements of each of the unexpanded or delivery configuration and expanded or deployed configuration, the required position or orientation (i. e. , pose) or both of structure 308 in the bodily cavity, or the requirements for successful ablation of a desired pattern.
- Figure 4 is a schematic side elevation view of at least a portion of a transducer- based device 400 that includes a flexible circuit structure 401 that is employed to provide a plurality of transducers 406 (two called out) according to an example embodiment.
- the flexible circuit structure 401 may form part of a structure (e.g. , structure 308) that is selectively movable between a delivery configuration sized for percutaneous delivery and expanded or deployed configurations sized too large for percutaneous delivery.
- the flexible circuit structure 401 may be located on, or form at least part of, of a structural component (e.g. , elongate member 304) of a transducer-based device system.
- the flexible circuit structure 401 can be formed by various techniques including flexible printed circuit techniques.
- the flexible circuit structure 401 includes various layers including flexible layers 403a, 403b and 403c (i. e., collectively flexible layers 403).
- each of flexible layers 403 includes an electrical insulator material (e.g., polyimide).
- One or more of the flexible layers 403 can include a different material than another of the flexible layers 403.
- the flexible circuit structure 401 includes various electrically conductive layers 404a, 404b and 404c (collectively electrically conductive layers 404) that are interleaved with the flexible layers 403.
- each of the electrically conductive layers 404 is patterned to form various electrically conductive elements.
- electrically conductive layer 404a is patterned to form a respective electrode 415 of each of the transducers 406.
- Electrodes 415 have respective electrode edges 415- 1 that form a periphery of an electrically conductive surface associated with the respective electrode 415.
- Figure 3C shows another example of electrode edges 315- 1 and illustrates that the electrode edges can define electrically-conductive-surface-peripheries of various shapes.
- electrically conductive layer 404b is patterned, in some embodiments, to form respective temperature sensors 408 for each of the transducers 406 as well as various leads 410a arranged to provide electrical energy to the temperature sensors 408.
- each temperature sensor 408 includes a patterned resistive member 409 (two called out) having a predetermined electrical resistance.
- each resistive member 409 includes a metal having relatively high electrical conductivity
- electrically conductive layer 404c is patterned to provide portions of various leads 410b arranged to provide an electrical
- leads 410b are arranged to pass though vias (not shown) in flexible layers 403a and 403b to connect with electrodes 415.
- Figure 4 shows flexible layer 403c as being a bottom-most layer, some embodiments may include one or more additional layers underneath flexible layer 403c, such as one or more structural layers, such as a steel or composite layer. These one or more structural layers, in some embodiments, are part of the flexible circuit structure 401 and can be part of, e.g. , elongate member 304.
- Figure 4 shows only three flexible layers 403a-403c and only three electrically conductive layers 404a-404c, it should be noted that other numbers of flexible layers, other numbers of electrically conductive layers, or both, can be included.
- electrodes 415 are employed to selectively deliver RF energy to various tissue structures within a bodily cavity (not shown) (e.g., an intra-cardiac cavity).
- the energy delivered to the tissue structures may be sufficient for ablating portions of the tissue structures.
- the energy delivered to the tissue may be delivered to cause monopolar tissue ablation, bipolar tissue ablation or blended monopolar-bipolar tissue ablation by way of non-limiting example.
- each electrode 415 is employed to sense an electrical potential in the tissue proximate the electrode 415. In some embodiments, each electrode 415 is employed in the generation of an intra-cardiac electrogram. In some embodiments, each resistive member 409 is positioned adjacent a respective one of the electrodes 415. In some embodiments, each of the resistive members 409 is positioned in a stacked or layered array with a respective one of the electrodes 415 to form a respective one of the transducers 406. In some embodiments, the resistive members 409 are connected in series to allow electrical current to pass through all of the resistive members 409. In some embodiments, leads 410a are arranged to allow for a sampling of electrical voltage in between each resistive members 409.
- each resistive member 409 allows for the electrical resistance of each resistive member 409 to be accurately measured.
- the ability to accurately measure the electrical resistance of each resistive member 409 may be motivated by various reasons including determining temperature values at locations at least proximate the resistive member 409 based at least on changes in the resistance caused by convective cooling effects (e.g., as provided by blood flow).
- the transducer-based device is deployed in a bodily cavity (e.g., when the transducer-based device takes the form of a catheter device arranged to be percutaneously or intravascularly delivered to a bodily cavity), it may be desirable to perform various mapping procedures in the bodily cavity.
- a desired mapping procedure can include mapping electrophysiological activity in the intra-cardiac cavity.
- Other desired mapping procedures can include mapping of various anatomical features within a bodily cavity.
- An example of the mapping performed by devices according to various embodiments may include locating the position of the ports of various bodily openings positioned in fluid communication with a bodily cavity. For example, in some embodiments, it may be desired to determine the locations of various ones of the pulmonary veins or the mitral valve that each interrupts an interior surface of an intra-cardiac cavity such as a left atrium.
- the mapping is based at least on locating bodily openings by differentiating between fluid and tissue (e.g., tissue defining a surface of a bodily cavity).
- tissue e.g., tissue defining a surface of a bodily cavity.
- tissue impedance measurements A set of transducers positioned adjacently to tissue that forms the interior surface(s) of a bodily cavity and across the ports of the bodily cavity can be responsive to electrical tissue impedance.
- tissue will have higher associated tissue impedance values than the impedance values associated with blood.
- transducers that sense force i. e. , force sensors.
- a set of force detection transducers positioned around the tissue that forms the interior surface(s) of a bodily cavity and across the bodily openings or ports of the bodily cavity can be used to determine which of the transducers are not engaged with the tissue, which may be indicative of the locations of the ports.
- transducer-based device 300 can communicate with, receive power from or be controlled by a transducer- activation system 322. In some
- elongate members 304 can form a portion of an elongated cable 316 of control leads 317, for example by stacking multiple layers, and terminating at a connector 321 or other interface with transducer-activation system 322.
- the control leads 317 may correspond to the electrical connectors 216 in Figure 2 in some embodiments.
- the transducer-activation device system 322 may include a controller 324 that includes a data processing device system 310 (e.g., from Figure 1) and a memory device system 330 (e.g., from Figure 1) that stores data and instructions that are executable by the data processing device system 310 to process information received from transducer-based device 300 or to control operation of transducer-based device 300, for example activating various selected transducers 306 to ablate tissue.
- Controller 324 may include one or more controllers.
- Transducer-activation device system 322 includes an input-output device system
- Input-output device system 320 may include a user-activatable control that is responsive to a user action.
- Input-output device system 320 may include one or more user interfaces or input/output (I/O) devices, for example one or more display device systems 332, speaker device systems 334, keyboards, mice, joysticks, track pads, touch screens or other transducers to transfer information to, from, or both to and from a user, for example a care provider such as a physician or technician.
- I/O input/output
- display device systems 332 speaker device systems 334, keyboards, mice, joysticks, track pads, touch screens or other transducers to transfer information to, from, or both to and from a user, for example a care provider such as a physician or technician.
- output from a mapping process may be displayed on a display device system 332.
- Transducer-activation device system 322 may also include an energy source device system 340 including one or more energy source devices connected to transducers 306.
- an energy source device system 340 including one or more energy source devices connected to transducers 306.
- Figure 3A shows a communicative connection between the energy source device system 340 and the controller 324 (and its data processing device system 310)
- the energy source device system 340 may also be connected to the transducers 306 via a
- the energy source device system 340 may receive control signals via the communicative connection with the controller 324 (and its data processing device system 310), and, in response to such control signals, deliver energy to, receive energy from, or both deliver energy to and receive energy from one or more of the transducers 306 via a communicative connection with such transducers 306 (e.g., via one or more communication lines through catheter body 314, elongated cable 316 or catheter sheath 312) that does not pass through the controller 324.
- the energy source device system 340 may provide results of its delivering energy to, receiving energy from, or both delivering energy to and receiving energy from one or more of the transducers 306 to the controller 324 (and its data processing device system 310) via the communicative connection between the energy source device system 340 and the controller 324.
- the number of energy source devices in the energy source device system 340 is fewer than the number of transducers in some embodiments.
- the energy source device system 340 may, for example, be connected to various selected transducers 306 to selectively provide energy in the form of electrical current or power (e.g., RF energy), light or low temperature fluid to the various selected transducers 306 to cause ablation of tissue.
- the energy source device system 340 may, for example, selectively provide energy in the form of electrical current to various selected transducers 306 and measure a temperature characteristic, an electrical characteristic, or both at a respective location at least proximate each of the various transducers 306.
- the energy source device system 340 may include as its energy source devices various electrical current sources or electrical power sources.
- an indifferent electrode 326 is provided to receive at least a portion of the energy transmitted by at least some of the transducers 306. Consequently, although not shown in Figure 3A, the indifferent electrode 326 may be communicatively connected to the energy source device system 340 via one or more communication lines in some embodiments. In addition, although shown separately in Figure 3 A, indifferent electrode 326 may be considered part of the energy source device system 340 in some embodiments. In some embodiments, the indifferent electrode 326 is provided outside the body or at least the bodily cavity in which the transducer-based device (e.g., 200 or 300) is located.
- input-output device system 320 may include other systems.
- input-output device system 320 may optionally include energy source device system 340, transducer-based device 300 or both energy source device system 340 and transducer-based device 300 by way of non-limiting example.
- Structure 308 can be delivered and retrieved via a catheter member, for example a catheter sheath 312.
- a structure provides expansion and contraction capabilities for a portion of a medical device (e.g. , an arrangement, distribution or array of transducers 306).
- the transducers 306 can form part of, be positioned or located on, mounted or otherwise carried on the structure and the structure may be configurable to be appropriately sized to slide within catheter sheath 312 in order to be deployed percutaneously or
- each of the elongate members 304 includes a respective distal end 305 (only one called out), a respective proximal end 307 (only one called out) and an intermediate portion 309 (only one called out) positioned between the proximal end 307 and the distal end 305.
- the respective intermediate portion 309 of each elongate member 304 includes a first or front surface 318a that is positionable to face an interior tissue surface within a bodily cavity (not shown) and a second or back surface 318b opposite across a thickness of the intermediate portion 309 from the front surface 318a.
- each of the elongate members 304 includes a respective pair of side edges of the front surface 318a, the back surface 318b, or both the front surface 318a and the back surface 318b, the side edges of each pair of side edges opposite to one another, the side edges of each pair of side edges extending between the proximal end 307 and the distal end 305 of the respective elongate member 304.
- each pair of side edges includes a first side edge 327a (only one called out in Figure 3A) and a second side edge 327b (only one called out in Figure 3A).
- each of the elongate members 304 is arranged front surface 318a-toward-back surface 318b in a stacked array during an unexpanded or delivery configuration similar to that described in co-assigned International Application No.: PCT/US2012/022061 and co-assigned International Application No.:
- a stacked array allows the structure 308 to have a suitable size for percutaneous or intravascular delivery.
- 304 are arranged to be introduced into a bodily cavity (again not shown in Figure 3A) distal end
- each elongate member 304 of structure 308 includes a twisted portion proximate at proximal end 307. Similar twisted portions are described in co-assigned International Application No.: PCT/US2012/022061 and co-assigned International Application No.: PCT/US2012/022062.
- each of the elongate members 304 is arranged in a fanned arrangement 370 in Figure 3B.
- the fanned arrangement 370 is formed during the expanded or deployed configuration in which structure 308 is manipulated to have a size too large for percutaneous or intravascular delivery.
- structure 308 includes a proximal portion 308a having a first domed shape 309a and a distal portion 308b having a second domed shape 309b.
- the proximal and the distal portions 308a, 308b include respective portions of elongate members 304.
- the structure 308 is arranged to be delivered distal portion 308b first into a bodily cavity (again not shown) when the structure is in the unexpanded or delivery configuration as shown in Figure 3A.
- the proximal and the distal portions 308a, 308b are arranged in a clam shell configuration in the expanded or deployed configuration shown in Figure 3B.
- each of the front surfaces 318a (three called out in Figure 3B) of the intermediate portions 309 of the plurality of elongate members 304 face outwardly from the structure 308 when the structure 308 is in the deployed configuration.
- each of the front surfaces 318a of the intermediate portions 309 of the plurality of elongate members 304 are positioned adjacent an interior tissue surface of a bodily cavity (not shown) in which the structure 308 (i.e., in the deployed configuration) is located.
- each of the back surfaces 318b (two called out in Figure 3B) of the intermediate portions 309 of the plurality of elongate members 304 face an inward direction when the structure 308 is in the deployed configuration.
- the transducers 306 can be arranged in various distributions or arrangements in various embodiments. In some embodiments, various ones of the transducers 306 are spaced apart from one another in a spaced apart distribution in the delivery configuration shown in Figure 3A. In some embodiments, various ones of the transducers 306 are arranged in a spaced apart distribution in the deployed configuration shown in Figure 3B. In some embodiments, various pairs of transducers 306 are spaced apart with respect to one another. In some embodiments, various regions of space are located between various pairs of the transducers 306.
- the transducer-based device 300 includes at least a first transducer 306a, a second transducer 306b and a third transducer 306c (all collectively referred to as transducers 306).
- each of the first, the second, and the third transducers 306a, 306b and 306c are adjacent transducers in the spaced apart distribution.
- the first and the second transducers 306a, 306b are located on different elongate members 304 while the second and the third transducers 306b, 306c are located on a same elongate member 304.
- a first region of space 350 is between the first and the second transducers 306a, 306b. In some embodiments, the first region of space 350 is not associated with any physical portion of structure 308.
- a second region of space 360 associated with a physical portion of device 300 i. e., a portion of an elongate member 304 is between the second and the third transducers 306b, 306c.
- each of the first and the second regions of space 350, 360 does not include a transducer of transducer- based device 300. In some embodiments, each of the first and the second regions of space 350, 360 does not include any transducer.
- embodiments need not employ a group of elongate members 304 as employed in the illustrated embodiment.
- other embodiments may employ a structure having one or more surfaces, at least a portion of the one or more surfaces defining one or more openings in the structure.
- a region of space not associated with any physical portion of the structure may extend over at least part of an opening of the one or more openings.
- other structures may be employed to support or carry transducers of a transducer-based device such as a transducer- based catheter.
- an elongated catheter member may be used to distribute the transducers in a linear or curvilinear array. Basket catheters or balloon catheters may be used to distribute the transducers in a two-dimensional or three-dimensional array.
- At least some of the plurality of transducers 306 include respective electrodes 315 (seven called out in each of Figures 3C, 3D, six of the seven called out as 315q, 315r, 315s, 315t, 315u and 315v), each electrode 315 including a respective energy transmission surface 319 (one called out in Figure 3C, three called out in Figure 3D, two of the three called out as 319u, 319v) configured for transferring energy to tissue, from tissue or both to and from tissue.
- each of the energy transmission surfaces 319 is provided by an electrically conductive surface.
- each of the electrodes 315 is solely located on a surface of an elongate member 304 (e.g., front surfaces 318a or back surfaces 318b). In some embodiments, various electrodes 315 are located on one, but not both of the respective front surface 318a and respective back surface 318b of each of various ones of the elongate members 304.
- transducer-based device systems employ, or have employed, relatively low numbers of transducers typically on the order of 64 or fewer transducers or a number of transducers arranged with a relatively low spatial distribution density (e.g., a relatively low number of transducers arranged per a given area).
- Various embodiments disclosed in this detailed description may employ distributions of transducers having relatively high spatial densities (e.g., a relatively high number of transducers arranged per a given region of space) than conventionally employed. Increased number of transducers or increased spatial densities of transducers within a particular distribution of the transducers may be motivated for various reasons.
- transducers may allow for higher spatial densities in the distributions of the transducers to allow the transducers to interact with a tissue region of a bodily cavity with greater resolution and accuracy.
- the interactions may include ablation, temperature detection, impedance detection, electrophysiological activity detection and tissue stimulation by way of non- limiting example.
- distributions of transducers having relatively high spatial densities may provide enhanced diagnostic or treatment procedures performed on a given tissue region by allowing for the interaction of a greater number of transducers with the given tissue region.
- Various embodiments disclosed in this detailed description may employ 100 or more transducers, 200 or more transducers or even 300 or more transducers.
- transducer-based devices disclosed in this detailed description are representative of various embodiments that employ several hundreds of transducers.
- Various transducer-based devices disclosed in this detailed description e.g., as depicted at least in part in Figures 3A, 3B, 3C, 3D, 3E, 3F, 3G, 3H, 31, 3J and 3K
- transducers 306, electrodes 315 or both transducers 306 and electrodes 315 are referenced with respect to various embodiments, it is understood that other transducers or transducer elements may be employed in other embodiments. It is understood that a reference to a particular transducer 306 in various embodiments may also imply a reference to an electrode 315, as an electrode 315 may be part of the transducer 306 as shown, e.g. , with Figure 4.
- Figure 3C is a perspective view of at least one embodiment of the transducer- based device 300 as viewed from a viewing angle that is different from that shown in Figure 3B.
- structure 308 including various ones of the elongate members 304, and a portion of catheter body 314 are shown in Figure 3C.
- transducer-based device 300 is shown in the expanded or deployed configuration.
- the respective intermediate portions 309 (only two called out) of various ones of the elongate members 304 are angularly arranged with respect to one another about a first axis 335a when structure 308 is in the deployed configuration.
- the respective intermediate portions 309 of a respective pair of the elongate members 304 are angularly spaced with respect to one another by a respective angle radiating from a point on the first axis 335a when structure 308 is in the deployed configuration. The same may apply for each pair of adjacent elongate members 304 in some embodiments. In various embodiments, the intermediate portions 309 of various ones of the elongate members 304 are radially arranged about first axis 335a when structure 308 is in the deployed
- the intermediate portions 309 of various ones of the elongate members 304 are circumferentially arranged about first axis 335a when structure 308 is in the deployed configuration, similar to lines of longitude about an axis of rotation of a body of revolution, which body of revolution may, or may not be spherical.
- each of the elongate members 304 includes a curved portion 323 (only two called out) having a curvature configured to cause the curved portion 323 to extend along at least a portion of a curved path, the curvature configured to cause the curved path to intersect the first axis 335a at each of a respective at least two spaced apart locations along the first axis 335a when structure 308 is in the deployed configuration.
- the curved path is defined to include an imagined extension of the curved portion along the curved portion's extension direction while maintaining the curved portion's curvature.
- each curved portion 323 may extend entirely along, or at least part way along the respective curved path to physically intersect at least one of the respective at least two spaced apart locations along the first axis 335a.
- no physical portion of a given elongate member of an employed structure intersects any of the at least two spaced apart locations along the first axis 335a intersected by the respective curved path associated with the curved portion 323 of the given elongate member.
- the end portion of the given elongate member may be physically separated from the first axis 335a by hub system (not shown) employed to physically couple or align the elongate member to other elongate members.
- a given elongate member may include a recurve portion arranged to physically separate the given elongate member from the first axis 335a.
- various ones of the elongate members 304 cross one another at a location on the structure 308 passed through by the first axis 335a when the structure 308 is in the deployed configuration.
- the curved path is an arcuate path.
- At least the portion of the curved path extended along by corresponding curved portion 323 is arcuate.
- the word “curvature” should be understood to mean a measure or amount of curving.
- the word “curvature” is associated with a rate of change of the angle through which the tangent to a curve turns in moving along the curve.
- the intermediate portion 309 of first elongate member 304a overlaps the intermediate portion 309 of a second elongate member 304b at a location on structure 308 passed through by first axis 335a when structure 308 is in the deployed configuration.
- the intermediate portions 309 of the first elongate member 304a and the second elongate member 304b cross at a location on structure 308 passed through, or intersected, by first axis 335a when structure 308 is in the deployed configuration. In some embodiments, the intermediate portion 309 of first elongate member 304a is adjacent the intermediate portion 309 of the second elongate member 304b when structure 308 is in the deployed configuration.
- the intermediate portions 309 of at least some of the plurality of elongate members 304 are, when the structure 309 is in the deployed configuration, sufficiently spaced from the first axis 335a to position each of at least some of the plurality of the electrodes 315 at respective locations suitable for contact with a tissue wall of the bodily cavity (not shown in Figure 3C).
- At least some of the transducers 306 are radially spaced about first axis 335a when structure 308 is in the deployed configuration.
- various ones of the electrodes 315 are radially spaced about first axis 335a in the deployed configuration in at least some of the embodiments associated with various ones of Figures 3B, 3C, 3D and 3E.
- at least some of the transducers 306 are circumferentially arranged about first axis 335a when structure 308 is in the deployed configuration.
- various ones of the electrodes 315 are circumferentially arranged about first axis 335a in the deployed configuration in at least some of the embodiments associated with various ones of Figures 3B, 3C, 3D and 3E.
- the plurality of the electrodes 315 includes a first group 336a (not called out in Figure 3E) of the electrodes 315 located on first elongate member 304a and a second group 338a (not called out in Figure 3E) of the electrodes 315 located on second elongate member 304b. It is understood that although electrodes are referred to in these described embodiments, the same analysis applies to the corresponding transducers in some embodiments.
- the plurality of electrodes 315 may form part of a plurality of sets of one or more of the electrodes 315, each respective set of the electrodes 315 located on a respective one of the elongate members 304 in other embodiments.
- the electrodes 315 of the first group 336a are arranged such that each electrode 315 of the first group 336a is intersected by a first plane 342a having no thickness.
- no thickness in this and similar contexts means no thickness, practically no thickness, or infinitely small thickness, and excludes perceptibly large thicknesses like thicknesses on the order of a size of an electrode 315.
- the electrodes 315 of the second group 338a are arranged such that each electrode 315 of the second group 338a is intersected by a second plane 344a having no thickness.
- the intersection of each electrode 315 of the first group 336a by first plane 342a is represented in Figure 3C by intersection line 345a.
- the intersection of each electrode 315 of the second group 338a by second plane 344a is represented in Figure 3C by intersection line 345b.
- First plane 342a and second plane 344a are depicted as having boundaries merely for purposes of clarity of illustration in Figure 3C.
- first plane 342a and the second plane 344a are non-parallel planes that intersect each other along a second axis 337a.
- second axis 337a is parallel to first axis 335a.
- first axis 335a and second axis 337a are collinear.
- the first axis 335a and the second axis 337a form a single axis. In other embodiments, different spatial relationships may exist between first axis 335a and second axis 337a.
- the electrodes 315 are arranged in a spatial distribution in which a first electrode 315q associated with transducer 306q is intersected by each of the first plane 342a and the second plane 344a when the structure 308 is in the deployed configuration. In some embodiments, first electrode 315q is not intersected by first axis 335a when structure 308 is in the deployed configuration. In some embodiments, first electrode 315q is not intersected by second axis 337a when structure 308 is in the deployed configuration. In some embodiments, the first group 336a of electrodes 315 includes first electrode 315q. In some embodiments, the second group of electrodes 338a does not include first electrode 315q.
- the first axis 335a, the second axis 337a or each of the first axis 335a and the second axis 337a intersects at least one electrode 315 located on structure 308 (e.g., electrode 315r associated with transducer 306r in Figures 3C and 3D) that does not include first electrode 315q.
- the first axis 335a, the second axis 337a or each of the first axis 335a and the second axis 337a does not intersect any electrode 315 located on structure 308, such as, for example, when no polar electrode (e.g., 315r in Figures 3C and 3D) is provided.
- the first axis 335a, the second axis 337a or each of the first axis 335a and the second axis 337a does not intersect any electrode or transducer.
- Figure 3D is a plan view of structure 308 in the deployed configuration of Figure 3C.
- the plan view of Figure 3D has an orientation such that each of first plane 342a and second plane 344a is viewed On edge' to their respective planar surfaces. (Note that in embodiments where each of the first plane 342a and the second plane 344a have no thickness, On edge' is intended to refer to an On edge' perspective assuming that each plane had an edge of minimal thickness.)
- the plan view of Figure 3D has an orientation such that each of the first axis 335a and second axis 337a is viewed along the axis in this particular embodiment.
- Each of first plane 342a and second plane 344a are represented by a respective "heavier" line in Figure 3D.
- first axis 335a and second axis 337a are represented by a " ⁇ " symbol in Figure 3D. It is understood that each of the depicted lines or symbols " ⁇ " used to represent any corresponding plane, intersection line or axis in this disclosure do not impart any size attributes on the corresponding plane or axis.
- each of the first group 336a and the second group 338a includes two or more of the electrodes 315. In some embodiments, the first group 336a, the second group 338a or each of both the first group 336a and the second group 338a includes three or more of the electrodes 315. In various embodiments, the first group 336a, the second group 338a or each of both the first group 336a and the second group 338a includes a pair of adjacent electrodes 315 located on a respective one of the first elongate member 304a and the second elongate member 304b.
- a region of space associated with a physical portion of structure 308 (e.g., an elongate member 304 portion) is located between the respective electrodes 315 of the pair of adjacent electrodes 315 included in the first group 336a, and the region of space is intersected by the first plane 342a when the structure 308 is in the deployed configuration.
- the respective electrodes 315 of the first group 336a are spaced along a length of a portion of the first elongate member 304a, the length extending between the respective distal and proximal ends 305, 307 (not called out in Figures 3B, 3C, 3D and 3E) of the first elongate member 304a, the entirety of the length of the portion of the first elongate member 304a being intersected by the first plane 342a when structure 308 is in the deployed configuration.
- the first plane 342a intersects every electrode 315 located on the first elongate member 304a when structure 308 is in the deployed configuration.
- the second plane 344a intersects every electrode 315 that is located on the second elongate member 304b when structure 308 is in the deployed configuration. In some embodiments, some, but not all of the respective electrodes 315 located on the first elongate member 304a, the second elongate member 304b, or each of the first elongate member 304a and the second elongate member 304b are intersected by a corresponding one of the first plane 342a and the second plane 344a when structure 308 is in the deployed configuration.
- the second axis 337a is not collinear with the first axis 335a. In some embodiments, the second axis 337a and the first axis 335a do not form a single axis. In some embodiments, the second axis 337a does not intersect the first axis 335a.
- Figure 3D shows another embodiment in which each electrode 315 of second group 338b (not called out in Figures 3C and 3E) of electrodes 315 located on second elongate member 304b is intersected by a second plane 344b having no thickness. Second plane 344b is viewed transversely to its planar surface in Figure 3D and is represented by a line.
- First plane 342a and second plane 344b are non parallel planes that intersect one another along a second axis 337b represented by a symbol " ⁇ " in Figure 3D. For clarity, each of second plane 344b and second axis 337b is not shown in Figure 3C. In at least one particular embodiment associated with Figure 3D, each of the first plane 342a and the second plane 344b intersects a first electrode 315s associated with transducer 306s that is not intersected by the second axis 337b.
- first electrode 315s is not intersected by the first axis 335a. In at least one particular embodiment associated with Figure 3D, first electrode 315s is not intersected by the second axis 337b. In at least one particular embodiment associated with Figure 3D, second axis 337b intersects at least one other electrode (e.g., electrode 315t associated with transducer 306t).
- the intermediate portion 309 of the first elongate member 304a overlaps the intermediate portion 309 of the second elongate member 304b at each of a first location on structure 308 passed through by first axis 335a and a second location on structure 308 passed through by the second axis 337b when structure 308 is in the deployed configuration, the second and first locations being different locations.
- particular spatial distributions of electrodes or transducers similar to the ones employed in Figures 3A, 3B, 3C, 3D and 3E may advantageously allow for higher spatial densities of the electrodes or transducers to be employed.
- various distributions of electrodes 315 having relatively high spatial densities are created throughout a significant portion of structure 308 including various regions proximate first axis 335a. It is noted that portions of various ones of elongate members 304 shown in Figures 3C and 3D overlap one another as the portions approach first axis 335a when structure 308 is in the deployed configuration.
- overlapping elongate members 304 may be employed at least in part to provide to distributions of the electrodes 315 having higher spatial densities.
- a portion of a first elongate member 304 e.g., elongate member 304a
- a second elongate member 304 e.g., elongate member 304b
- Figure 3E includes an enlarged view of a portion of the structure 308 depicted in Figure 3D, the portion of structure 308 including portions of at least elongate members 304a and 304b.
- the spatial density of the distribution of transducers 306 / electrodes 315 is such that at least a first electrode (e.g., electrode 315q associated with transducer 306q) is located at least on the portion 346a of the front surface 318a of first elongate member 304a.
- the portion of 347a of the front surface 318a of second elongate member 304b faces the back surface 318b (not called out in Figure 3E) of first elongate member 304a when structure 308 is in the deployed configuration.
- the portion of 347a of the front surface 318a of second elongate member 304b faces the back surface 318b of first elongate member 304a when structure 308 is in the delivery configuration (e.g., when the elongate members 304 are arranged front surface-toward-back surface in a stacked array (e.g., when the structure 308 is in a delivery configuration similar to that depicted in Figure 3A).
- the portion 347a of the front surface 318a of second elongate member 304b contacts the back surface 318b of first elongate member 304a when structure 308 is in the deployed configuration.
- a portion 346b i.
- a first electrode e.g., electrode 316u associated with transducer 306u
- a first electrode is located at least on the portion 346b of the front surface 318a of elongate member 304b.
- a first side edge 327a of the first elongate member 304a crosses a first side edge 327a of the pair of side edges of the second elongate member 304b at a first location 351a and crosses a second side edge 327b of the pair of side edges of the second elongate member 304b at a second location 352a when structure 308 is in the deployed configuration.
- various electrodes 315 are located at least on a portion 348a of the second elongate member 304b, the portion 348a of the second elongate member 304b located between a first transverse line 349a and a second transverse line 349b (e.g., each depicted by a ghosted line in Figure 3E) when the structure 308 is in the deployed configuration.
- the first transverse line 349a extends across a first width 353a of the second elongate member 304b at the first location 351 a
- the second transverse line 349b extends across a second width 353b of the second elongate member 304b at the second location 352a
- the first width 353a and the second width 353b are the widths of the front surfaces 318a of the second elongate member 304b.
- a magnitude of first width 353a is substantially the same as a magnitude of the second width 353b.
- the magnitude of the first width 353a is different than the magnitude of the second width 353b.
- the first transverse line 349a is perpendicular to one or both of the side edges 327a, 327b of the second elongate member 304b.
- the second transverse line 349b is perpendicular to one or both of the side edges 327a, 327b of the second elongate member 304b.
- the magnitude of the first width 353a is a minimum with respect to all other respective magnitudes of possible widths between side edges 327a, 327b of the second elongate member 304b originating at location 351 a.
- the magnitude of the second width 353b is a minimum with respect to all other respective magnitudes of possible widths between side edges 327a, 327b of the second elongate member 304b originating at location 352a.
- one or more of the electrodes 315 are wholly located on the portion 348a of the second elongate member 304b when the structure 308 is in the deployed configuration.
- electrode 315u is wholly located on the portion 348a (which is rectangular in some embodiments such as Figure 3E) of the second elongate member 304b when the structure 308 is in the deployed configuration.
- at least a portion of an electrode 315 of the plurality of electrodes 315 is located on the portion 348a of the second elongate member 304b when structure 308 is in the deployed configuration.
- electrode 315v is located at least on portion 348a in the deployed configuration.
- two or more of the electrodes 315 may be located on the portion 348a of the second elongate member 304b.
- distances between adjacent ones of the elongate members 304 shown in Figures 3C, 3D and 3E vary as elongate members 304 extend towards first axis 335a when structure 308 is in the deployed configuration.
- the varying distances between adjacent elongate members 304 in the deployed configuration may give rise to shape, size or dimensional constraints for the electrodes 315 located on the elongate members 304.
- the overlapping portions of various ones the elongate members 304 in the deployed configuration may give rise to shape, size or dimensional constraints for the electrodes 315 located on the portions of the various ones of the elongate members 304.
- the respective shape of various electrically conductive surfaces (e.g., energy transmission surfaces 319) of various ones of the electrodes 315 vary among the electrodes 315. In various embodiments, the respective shape of various electrically conductive surfaces (e.g., energy transmission surfaces 319) of various ones of the electrodes 315 vary among the electrodes 315 in accordance with their proximity to first axis 335a. In various embodiments, one or more dimensions or sizes of various electrically conductive surfaces (e.g., energy transmission surfaces 319) of various ones of the electrodes 315 vary among the electrodes 315.
- one or more dimensional sizes of various electrically conductive surfaces (e.g., energy transmission surfaces 319) of various ones of the electrodes 315 vary in accordance with their proximity to first axis 335a.
- the shape or size variances associated with various ones of the electrodes 315 may be motivated for various reasons.
- the shapes or sizes of various ones of the electrodes 315 may be controlled in response to various ones of the aforementioned size or dimensional constraints.
- each of various ones of the electrodes 315 located at least on second elongate member 304b have various electrode edges (e.g. , 315-1 in Figure 3C or 415-1 in Figure 4) that form a periphery of an electrically conductive surface associated with each of the various electrodes 315 (e.g., an energy transmission surface 319).
- a first electrode edge 333a associated with electrode 315u is arranged to follow a portion of the first side edge 327a of the first elongate member 304a between the first location 351a and the second location 352a when the structure 308 is an expanded or deployed configuration.
- the first electrode edge 333a of electrode 315u is arranged to be parallel to the portion of the first side edge 327a of the first elongate member 304 between the first location 351 and the second location 352 when the structure 308 is in an expanded or deployed configuration.
- a second electrode edge 333b forming part of the periphery of electrically conductive surface associated with electrode 315u is positioned opposite across the electrically conductive surface from the first electrode edge 333a.
- the second electrode edge 333b is arranged to follow a portion of one of the side edges 327 of the second elongate member 304b (e.g., side edge 327a of second elongate member 304b).
- the second electrode edge 333b is substantially parallel to the side edge 327a of second elongate member 304b.
- Figures 3F and 3G respectively show perspective and plan views of a plurality of transducers and electrodes located on a structure 313 (e.g., in a deployed configuration) according to various embodiments.
- structure 313 is selectively moveable from a delivery configuration to a deployed configuration in a manner similar to structure 308. It is noted that structure 313 is depicted in Figures 3F and 3G in a similar fashion to depictions of structure 308 in Figures 3C and 3D. In some embodiments, distributions of transducers or electrodes similar to those employed by structure 313 are employed by the structure 308 of Figures 3A, 3B, 3C, 3D and 3E.
- transducers are referred to as transducers 306
- electrodes are referred to as electrodes 315
- energy transmission surfaces are referred to as energy transmission surfaces 319
- elongate members are referred to as elongate members 304, et cetera.
- structure 313 may assume a delivery configuration similar to that shown for structure 308 in Figure 3A.
- transducers 306 / electrodes 315 associated with structure 313 have differences from the distribution of transducers 306 / electrodes 315 associated with structure 308, there are also similarities.
- the respective intermediate portions 309 of various ones of the elongate members 304 are angularly spaced with respect to one another about a first axis 335b when structure 313 is in the deployed configuration in a manner similar to that previously described with respect to structure 308.
- Various ones of the elongate members 304 cross one another at a location on the structure 313 passed through by first axis 335b when the structure 313 is in the deployed configuration.
- the intermediate portion 309 of a first elongate member overlaps the intermediate portion 309 of a second elongate member (e.g., elongate member 304e) at a location on structure 313 passed through by first axis 335b when structure 313 is in the deployed configuration.
- the intermediate portion 309 of first elongate member 304d is adjacent the intermediate portion 309 of the second elongate member 304e when structure 313 is in the deployed configuration.
- the transducers 306 (nine called out in each of Figures 3F and 3G, eight of the nine called as transducers 306w, 306x, 306y, 306z, 306aa, 306bb, 306cc, and 306dd) and electrodes 315 (nine called out in each of Figures 3F and 3G, eight of the nine called out as electrodes 315w, 315x, 315y, 315z, 315aa, 315bb, 315cc and 315dd) are radially spaced about first axis 335b when structure 313 is in the deployed configuration in a manner similar to the embodiments associated with structure 308.
- the plurality of electrodes 315 located on structure 313 includes a first group 336b (not called out in Figures 3H, 31) of the electrodes 315 located on first elongate member 304d and a second group 338c (not called out in Figures 3H, 31) of the electrodes 315 located on second elongate member 304e. It is understood that although electrodes are herein described, other forms of transducers or transducer elements may be employed in other embodiments.
- the electrodes 315 of the first group 336b are arranged such that each electrode 315 of the first group 336b is intersected by a first plane 342b having no thickness.
- the electrodes 315 of the second group 338c are arranged such that each electrode 315 of the second group 338c is intersected by a second plane 344c having no thickness.
- the intersection of each electrode 315 of the first group 336b by first plane 342b is represented in Figure 3F by intersection line 345c.
- the intersection of each electrode 315 of the second group 338c by second plane 344c is represented in Figure 3F by intersection line 345d.
- First plane 342b and second plane 344c are depicted as having boundaries for clarity of illustration in Figure 3F.
- first plane 342b and the second plane 344c are non-parallel planes that intersect each other along a second axis 337c (represented by a symbol " ⁇ " in Figure 3G).
- second axis 337c is parallel to first axis 335b.
- first axis 335b and second axis 337c are collinear.
- the first axis 335b and the second axis 337c form a single axis.
- the electrodes 315 are arranged in a spatial distribution in which a first electrode 315 (e.g., electrode 315w associated with transducer 306w) is intersected by each of the first plane 342b and the second plane 344c when the structure 313 is in the deployed configuration.
- first electrode 315w is not intersected by first axis 335b when structure 313 is in the deployed configuration.
- first electrode 315w is not intersected by second axis 337c when structure 313 is in the deployed configuration.
- the first group 336b of electrodes 315 includes first electrode 315w.
- the second group of electrodes 338c does not include first electrode 315w.
- the first axis 335a, the second axis 337c or each of the first axis 335 and the second axis 337c intersects at least one other electrode 315 located on structure 313 (e.g., electrode 315x associated with transducer 306x in Figures 3F, 3G and 31).
- the first axis 335b, the second axis 337c or each of the first axis 335b and the second axis 337c do not intersect any electrode 315 located on structure 313.
- the second axis 337c is not collinear with the first axis 335b. In some embodiments, the second axis 337c and the first axis 335b do not form a single axis. In some embodiments, the second axis 337c does not intersect the first axis 335b.
- Figure 3G shows another embodiment in which each electrode 315 of second group 338d (not called out in Figure 3F, 3H and 31) of electrodes 315 located on a second elongate member 304f is intersected by a second plane 344d having no thickness when structure 313 is in a deployed configuration. Second plane 344d is viewed transversely to its planar surface in Figure 3G and is represented by a line.
- First plane 342b and second plane 344d are non parallel planes that intersect one another along a second axis 337d represented by a symbol " ⁇ " in Figure 3G.
- each of the first plane 342b and the second plane 344d intersects a first electrode 315y associated with transducer 306y when structure 313 is in a deployed configuration.
- first electrode 315y is not intersected by the first axis 335b when structure 313 is in a deployed configuration.
- first electrode 315y is not intersected by the second axis 337d when structure 313 is in a deployed configuration.
- second axis 337d intersects at least one other electrode (e.g., electrode 315z associated with transducer 306z) when structure 313 is in a deployed configuration.
- Embodiments associated with Figures 3F and 3G have spatial distributions of the transducers 306 / electrodes 315 that have relatively high spatial densities in various regions of structure 313 including a plurality of regions proximate first axis 335b.
- a spatial distribution of the transducers 306 / electrodes 315 in various regions proximate first axis 335b have higher spatial densities than similar distributions associated with various embodiments of Figures 3A, 3B, 3C, 3D and 3E.
- Embodiments associated with Figures 3F and 3G may provide for electrodes 315 having electrically conductive surfaces (e.g., energy transmission surfaces 319, three called out in each of Figures 3F and 3G, two of the three called out as 319c and 319d) of greater size or dimension than some of the electrodes 315 associated with various embodiments of Figures 3A, 3B, 3C, 3D and 3E.
- larger electrodes 315 may be provided in regions proximate first axis 335b in at least some of the embodiments associated with Figures 3F and 3G.
- the use of larger electrodes may be motivated for various reasons.
- tissue ablation depths may be dependent on the size of the electrodes 315 employed for the ablation, with a use of larger electrodes 315 typically reaching a particular ablation depth in a shorter activation time than a use of relatively smaller electrodes 315.
- tissue ablation depths may be associated with larger electrodes.
- Figure 3H is shows perspective views of each of first elongate member 304d and second elongate member 304e in a "flattened" configuration in which the curved form of these elongate members 304 in Figures 3F and 3G is flattened out. It is noted that in embodiments where the elongate members 304 in Figures 3F and 3G include a twisted portion similar to the twisted portions of various ones of the elongate members 304 associated with Figures 3A, 3B, 3C, 3D and 3E, the twisted portions are shown untwisted in the flattened configuration of Figure 3H.
- each of the elongate members 304d, 304e includes a front surface 318a and back surface 318b opposite across a thickness 318c of the elongate member.
- at least some of the transducers 306 / electrodes 315 are located on the front surfaces 318a.
- Each intermediate portion 309 includes a respective pair of side edges 327a, 327b.
- the side edges 327a, 327b of each intermediate portion 309 are respective side edges of the front surface 318a, the back surface 318b, or both the front surface 318a and the back surface 318b of the intermediate portion 309.
- Each of the pair of side edges 327a, 327b extends between the proximal end 307 and the distal end 305 of the elongate member 304.
- FIG. 31 includes an enlarged view of a portion of the structure 313 depicted in Figure 3G, the portion of structure 313 including portions of at least elongate members 304d and 304e. For clarity of illustration, planes 342b, 344c, 344d and axis 337d are not shown in Figure 31.
- various portions of the front surface 318a of the first elongate member 304d overlap various portions of the front surface 318a of each of several ones of the plurality of elongate members 304 when structure 313 is in the deployed configuration. In at least one particular embodiment, various portions of the front surface 318a of the first elongate member 304d overlap various portions of the front surface 318a of every other one of the plurality of elongate members 304 when structure 313 is in the deployed configuration. In at least one particular embodiment associated with Figure 31, a portion 346c (i.
- first elongate member 304 e.g., elongate member 304d
- a portion 347c i.e., only called out in Figure 31, partially bounded by a ghosted line 345c
- a second elongate member e.g., elongate member 304e
- the spatial density of the distribution of transducers 306 / electrodes 315 is such that at least a first electrode (e.g., first electrode 315w associated with transducer 306w) is located at least on the portion 346c of the front surface 318a of first elongate member 304d.
- the portion of 347c of the front surface 318a of second elongate member 304e faces the back surface 318b (not called out in Figure 31) of first elongate member 304d when structure 313 is in the deployed configuration.
- the portion of 347c of the front surface 318a of second elongate member 304e faces the back surface 318b of first elongate member 304d when structure 313 is in the delivery configuration (e.g., when the elongate members 304 are arranged front surface-toward-back surface in a stacked array when the structure 313 is in a delivery configuration similar to that depicted in Figure 3A).
- the portion of 347c of the front surface 318a of second elongate member 304e contacts the back surface 318b of first elongate member 304d when structure 313 is in the deployed configuration.
- the first elongate member 304d is positioned such that first edge 327a of the first elongate member 304d crosses at least a second edge of the second elongate member 304e (e.g., second edge 327b of second elongate member 304e) when structure 313 is in the deployed configuration.
- a portion of the first edge 327a of the first elongate member 304d forms a recessed portion 328a of first elongate member 304d that exposes at least a portion of a second transducer 306aa (e.g., second electrode 315aa in at least one particular embodiment) located on second elongate member 304e.
- All recessed portions such as recessed portion 328a described herein are collectively referred to as recessed portions 328.
- the exposed portion of second transducer 306aa (e.g., electrode 315aa) is located at least on portion of a surface (e.g., front surface 318a) of the second elongate member 304e as viewed normally to the portion of the surface of the second elongate member 304e when structure 313 is in the deployed configuration.
- recessed portion 328a of first elongate member 304d exposes at least a portion of second electrode 315aa as viewed normally to a surface of the exposed portion of second electrode 315aa.
- the exposed portion of second transducer 306aa (e.g., electrode 315aa) is located on the second elongate member 304e as viewed towards the second transducer 306aa along a direction parallel to a direction that the first axis 335b extends along when structure 313 is in the deployed configuration.
- the second group 338c includes second transducer 306aa (e.g., electrode 315aa).
- the second transducer 306aa e.g., electrode 315aa
- first transducer 306w e.g., electrode 315w
- At least some of the plurality of transducers 306 /electrodes 315 are arranged in a plurality of concentric ringed arrangements 329 (four called out in Figure 3G (one of which is shown by a ghosted line), two of the four called out as 329a, 329b) about the first axis 335b when structure 313 is in the deployed configuration, a first one of the ringed arrangements 329 (e.g. , ringed arrangement 329a) having a fewer number of the transducers 306 (e.g., electrodes 315) than a second one of the ringed arrangements (e.g.
- the first ringed arrangement includes first transducer 306w (e.g., electrode 315w). In some of these various embodiments, the first ringed arrangement 329a does not include any of the transducers 306 (e.g., electrodes 315) located on the second elongate member 304e. In some of these example embodiments, the second ringed arrangement 329b includes the second transducer 304aa. In some of these various embodiments, the first ringed arrangement 329a is adjacent the second ringed arrangement 329b.
- first elongate member 304d includes a second recessed portion 328b (called out in Figures 3F, 3G and 3H) arranged to expose a portion of at least one transducer (e.g., electrode 315bb associated with transducer 306bb) located on second elongate member 304e when structure 313 is in the deployed configuration.
- second elongate member 304e includes several recessed portions (e.g., recessed portions 328c and 328d called out in Figures 3H, 3J.
- each of the recessed portions 328c and 328d has different dimensions or sizes than each of recessed portions 328a and 328b.
- Differences in the dimensions or sizes of various ones of the recessed portions 328 may be motivated by various reasons including the location of their corresponding elongate member 304 in structure 313 or a spatial relationship between various ones of the transducers 306 /electrodes 315 in the deployed configuration.
- the differences in the sizes or dimensions of various ones of the recessed portions 328 may be employed to create distribution of transducers 306 / electrodes 315 having higher spatial densities.
- each recessed portion 328c, 328d is arranged to expose a portion of at least one transducer 306 (e.g., electrode 315cc associated with transducer 306cc and electrode 315dd associated with transducer 306dd) located on elongate member 304g when structure 313 is in the deployed configuration.
- transducer 306 e.g., electrode 315cc associated with transducer 306cc and electrode 315dd associated with transducer 306dd
- Figure 3 J shows a plan view of structure 313 in the deployed configuration similar to that shown in Figure 3G with the exception that elongate member 304d is not shown. It is understood that elongate member 304d is not shown in Figure 3J only to better show elongate member 304e and its associated recessed portions 328c and 328d.
- planes 342b, 344c, 344d and axes 335b, 337c, 337d are not shown in Figure 3J.
- a first side edge 327a of a first elongate member crosses a first side edge 327a of the pair of side edges of a second elongate member (e.g., elongate member 304g) at a first location 351b and crosses a second side edge 327b of the pair of side edges of the second elongate member 304g at a second location 352b when structure 313 is in the deployed configuration.
- various electrodes 315 are located at least on a portion 348b of the second elongate member 304g, the portion 348b of the second elongate member 304g located between a first transverse line 349c and a second transverse line 349d (e.g., each depicted by a ghosted line in Figure 3 J) when the structure 313 is in the deployed configuration.
- the first transverse line 349c extends across a first width 353c of the second elongate member 304g at the first location 351b and the second transverse line 349d extends across a second width 353d of the second elongate member 304g at the second location 352b.
- the first width 353c and the second width 353d are the widths of the front surfaces 318a of the second elongate member 304g.
- a magnitude of first width 353c is substantially the same as a magnitude of the second width 353d.
- a magnitude of the first width 353c is different than a magnitude of the second width 353d.
- each of electrodes 315cc associated with transducer 306cc and electrode 315dd associated with transducer 306dd is wholly located on the portion 348b of the second elongate member 304g when the structure 313 is in the deployed configuration.
- electrode 315ee associated with transducer 306ee is located at least on portion 348b in the deployed configuration. Similar arrangements exist between other sets of the elongate members 304 of structure 313 in the deployed configuration.
- a first elongate member e.g., elongate member 304d
- elongate member 304d is positioned such that its first edge 327a crosses a first side edge 327a of a second elongate member (elongate member 304e) at a first location 351c and crosses a second side edge 327b of the second elongate member 304e at a second location 352c when the structure 313 is in the deployed configuration.
- Electrode 306aa associated with transducer 306aa is wholly located on a portion 348c of the second elongate member 304e, the portion 348c located between a first transverse line 349e and a second transverse line 349f when the structure 313 is in the deployed configuration.
- the first transverse line 349e extends across a first width 353e of the second elongate member 304e at the first location 35 lc
- the second transverse line 349f extends across a second width 353f of the second elongate member 304e at the second location 352c.
- the first width 353e is smaller than the second width 353f.
- electrically conductive surfaces (e.g., energy transmission surfaces 319) of various ones of the electrodes 315 employed in various embodiments associated with Figures 3F, 3G, 3H, 31, and 3J may have different sizes or shapes.
- each of various one of the electrodes 315 e.g., electrodes 315cc, 315dd and 315ee located on at least on elongate member 304g have different shapes and sizes.
- a periphery of an electrically conductive surface (e.g., an energy transmission surface 319) of various ones of the electrodes 315 is defined by various electrode edges.
- electrode 315dd includes a first electrode edge 333c and a second electrode edge 333d opposite across an electrically conductive surface of electrode 315dd from the first electrode edge 333c.
- the first electrode edge 333c associated with electrode 315dd is arranged to follow a portion of the first side edge 327a of the overlapping elongate member 304e between the first location 351b and the second location 352b when the structure 313 is in an expanded or deployed configuration.
- the first electrode edge 333c of electrode 315dd is arranged to be parallel to the portion of the first side edge 327a of the overlapping elongate member 304e between the first location 351b and the second location 352b when the structure 313 is in an expanded or deployed configuration. In at least one particular embodiment, the first electrode edge 333c of electrode 315dd is arranged to follow a portion of the first side edge 327a that defines or forms part of, the recessed portion 328c of overlapping elongate member 304e in the expanded or deployed configuration.
- the second electrode edge 333d associated with electrode 315dd is arranged to follow a portion of one of the side edges 327 of elongate member 304g (e.g., side edge 327a of second elongate member 304g). In at least one particular embodiment, the second electrode edge 333d associated with electrode 315dd is arranged to follow a portion of one of the side edges 327 of elongate member 304g (e.g., side edge 327a of second elongate member 304g) that defines, or forms part of, a recessed portion 328j of the elongate member 304g.
- a first part of a first electrode edge 333e associated with electrode 315ee located on elongate member 304g is arranged to follow a portion of the first side edge 327a that defines, or forms part of, the recessed portion 328c of overlapping elongate member 304e when structure 313 is in the deployed configuration
- a second part of the first electrode edge 333e of electrode 315ee is arranged to follow a portion of the first side edge 327a that does not define or form part of the recessed portion 328c of overlapping elongate member 304e when structure 313 is in an expanded or deployed configuration.
- a first part of a second electrode edge 333f associated with electrode 315ee is arranged to follow a portion of the first side edge 327a that defines, or forms part of, the recessed portion 328j of the elongate member 304g, and a second part of the second electrode edge 333f is arranged to follow a portion of the first side edge 327a of elongate member 304j that does not define, or form part of, the recessed portion 328j .
- the edge 327a of the first elongate member 304d is interrupted by a notch 330a.
- the edge 327a of the first elongate member 304d is interrupted by recessed portion 328a of the first elongate member 304d.
- the recessed portion 328a forms at least a portion of the notch 330a.
- notch 330a is located in the intermediate portion 309 of the first elongate member 304d and extends towards the second edge 327b.
- the recessed portions 328b, 328c and 328d may form a portion of a respective one of notches 330b, 330c and 330d (called out in Figure 3H) in various embodiments.
- various ones of the recessed portions 328 may be advantageously employed to create, at least in part, a spatial distribution of the transducers 315 having a relatively high spatial density.
- various ones of recessed portions 328 may be advantageously employed to address, at least in part, transducer size or shape constraints associated with structure 313 (e.g., overlapping regions of elongate members 304 or varying distances between various elongate members 304).
- various ones of recessed portions 328 may allow, at least in part, for the use of electrodes 315 having relatively large electrically conductive surfaces (e.g., energy transmission surfaces 319). Other benefits may accompany the use of recessed portions such as recessed portions 328.
- recessed portions similar to various ones of recess portions 328 may be employed to increase fluid flow (e.g., blood flow) in a particular region of structure 313 (e.g., a region where elongate members 304 overlap one another) that may hinder or otherwise obstruct a flow of fluid (e.g., blood flow).
- fluid flow e.g., blood flow
- a particular region of structure 313 e.g., a region where elongate members 304 overlap one another
- a flow of fluid e.g., blood flow
- Figure 3K includes a perspective view of two elongate members 304h and 304i in a flattened configuration similar to that shown by elongate members 304d and 304e in Figure 3H.
- Elongate members 304h and 304i are similar to elongate members 304d and 304e in various embodiments, form part of structure of a transducer-based device system (not shown) similar to structures 308, 313.
- the structure may be configurable between a delivery configuration and a deployed configuration similar to that previously described in this detailed description.
- elongate member 304h overlaps elongate member 304i when the structure is the deployed configuration in a manner similar to elongate members 304d and 304e.
- various elements of each of elongate members 304h and 304i are identified by the same part numbers employed to identify similar elements in other previously described elongate members.
- each of elongate members 304h and 304i includes an intermediate portion 309 that includes a front surface 318a and back surface 318b opposite across a thickness 318c of the elongate member.
- at least some of the transducers 306 / electrodes 315 are located on the front surfaces 318a.
- Each intermediate portion 309 includes a respective pair of side edges 327a, 327b extending between proximal and distal ends 307, 305 of the elongate member 304.
- the first elongate member 304h may be positioned such that first edge 327a of the first elongate member 304h crosses a second edge 327b of the second elongate member 304i when the associated structure is in the deployed configuration.
- each of the elongate members 304h, 304i includes a set of recessed portions 328 (e.g., associated ones of recessed portions 328e, 328f, 328g, 328h).
- each of the elongate members 304h, 304i includes a jogged portion (e.g., a respective one of jogged portions 331a, 331b), each jogged portion undergoing at least one change in direction as the jogged portion extends between the proximal and distal ends 307, 305 of the respective elongate member.
- various ones of the recessed portions 328e, 328f, 328g and 328h may form a part of one of the jogged portions 331 a, 331b. In various embodiments, various ones of the recessed portions 328e, 328f, 328g and 328h may be located on respective ones of the elongate members 304h and 304i to expose a portion of at least one transducer 306 / electrode 315 located on another elongate member 304 (e.g., when an associated structure that includes the elongate members 304 is in a deployed configuration).
- a surface of a particular one of the elongate members may be interrupted by a channel (e.g., trough, groove, aperture), the channel located to expose a portion of at least one transducer 306 / electrode 315 located on another elongate member 304 especially when an associated structure that includes the elongate members 304 is in a deployed configuration.
- a channel e.g., trough, groove, aperture
Abstract
A medical device system is disclosed including a high-density arrangement of transducers, which may be configured to ablate, stimulate, or sense characteristics of tissue inside a bodily cavity, such as an intra-cardiac cavity. High-density arrangements of transducers may be achieved, at least in part, by overlapping elongate members on which the transducers are located, and varying sizes, shapes, or both of the transducers, especially in view of the overlapping of the elongate members. Also, the high-density arrangements of transducers may be achieved, at least in part, by including one or more recessed portions in an elongate member in order to expose one or more transducers on an underlying elongate member in a region adjacent an elongate-member-overlap region.
Description
HIGH-DENSITY ELECTRODE-BASED MEDICAL DEVICE SYSTEM
CROSS-REFERENCE TO RELATED APPLICATIONS
This application claims priority to each of U.S. Provisional Application No. 61/649,734, filed May 21, 2012; U.S. Provisional Application No. 61/670,881, filed July 12, 2012; U.S. Provisional Application No. 61/723,311, filed November 6, 2012; U.S. Provisional Application No. 61/734,750, filed December 7, 2012; U.S. Non-Provisional Application No. 13/793,076, filed March 11, 2013; and U.S. Non-Provisional Application No. 13/793,213, filed March 11, 2013. The entire disclosure of each of the applications cited in this paragraph is hereby incorporated herein by reference.
TECHNICAL FIELD
Aspects of this disclosure generally are related to a medical device system including a high-density arrangement of transducers. In some embodiments, the transducers configured to ablate or sense characteristics of tissue inside a bodily cavity.
BACKGROUND
Cardiac surgery was initially undertaken using highly invasive open procedures.
A sternotomy, which is a type of incision in the center of the chest that separates the sternum was typically employed to allow access to the heart. In the past several decades, more and more cardiac operations are performed using intravascular or percutaneous techniques, where access to inner organs or other tissue is gained via a catheter.
Intravascular or percutaneous surgeries benefit patients by reducing surgery risk, complications and recovery time. However, the use of intravascular or percutaneous technologies also raises some particular challenges. Medical devices used in intravascular or percutaneous surgery need to be deployed via catheter systems which significantly increase the complexity of the device structure. As well, doctors do not have direct visual contact with the medical devices once the devices are positioned within the body.
One example of where intravascular or percutaneous medical techniques have been employed is in the treatment of a heart disorder called atrial fibrillation. Atrial fibrillation is a disorder in which spurious electrical signals cause an irregular heartbeat. Atrial fibrillation has been treated with open heart methods using a technique known as the "Cox-Maze procedure". During this procedure, physicians create specific patterns of lesions in the left or right atria to block various paths taken by the spurious electrical signals. Such lesions were
originally created using incisions, but are now typically created by ablating the tissue with various techniques including radio-frequency (RF) energy, microwave energy, laser energy and cryogenic techniques. The procedure is performed with a high success rate under the direct vision that is provided in open procedures, but is relatively complex to perform intravascularly or percutaneously because of the difficulty in creating the lesions in the correct locations.
Various problems, potentially leading to severe adverse results, may occur if the lesions are placed incorrectly. It is particularly important to know the position of the various transducers which will be creating the lesions relative to cardiac features such as the pulmonary veins and mitral valve. The continuity, transmurality, and placement of the lesion patterns that are formed can impact the ability to block paths taken within the heart by spurious electrical signals. Other requirements for various ones of the transducers to perform additional functions such as, but not limited to, mapping various anatomical features, mapping electrophysiological activity, sensing tissue characteristics such as impedance and temperature and tissue stimulation can also complicate the operation of the employed medical device.
However, conventional transducer-based intra-bodily-cavity devices have relatively few transducers due to conventional technological limitations and, consequently, have difficulty gathering adequate information and performing proper lesion formation.
Accordingly, a need in the art exists for improved intra-bodily-cavity transducer-based devices.
SUMMARY
At least the above-discussed need is addressed and technical solutions are achieved by various embodiments of the present invention. In some embodiments, device systems exhibit enhanced capabilities for the deployment and the activation of various transducers, which may be located within a bodily cavity, such as an intra-cardiac cavity. In some embodiments, systems or a portion thereof may be percutaneously or intravascularly delivered to position the various transducers within the bodily cavity. Various ones of the transducers may be activated to distinguish tissue from blood and may be used to deliver positional information of the device relative to various anatomical features in the bodily cavity, such as the pulmonary veins and mitral valve in an atrium. Various ones of the transducers may employ characteristics such as blood flow detection, impedance change detection or deflection force detection to discriminate between blood and tissue. Various ones of the transducers may be used to treat tissue within a bodily cavity. Treatment may include tissue ablation by way of non- limiting example. Various ones of the transducers may be used to stimulate tissue within the
bodily cavity. Stimulation can include pacing by way of non- limiting example. Other advantages will become apparent from the teaching herein to those of skill in the art.
In some embodiments, a medical device system may be summarized as including a structure that includes a plurality of elongate members, each of the elongate members including a proximal end, a distal end, and an intermediate portion between the proximal and distal ends. The medical device system further includes a plurality of electrodes located on the structure, the plurality of electrodes positionable in a bodily cavity. A first group of the electrodes is located on a first elongate member of the plurality of elongate members and a second group of the electrodes is located on a second elongate member of the plurality of elongate members. The structure is selectively moveable between a delivery configuration in which the structure is sized to be percutaneously delivered to the bodily cavity and a deployed configuration in which the structure is expanded to have a size too large to be percutaneously delivered to the bodily cavity. The intermediate portions of the elongate members are angularly arranged with respect to one another about a first axis when the structure is in the deployed configuration. Each electrode of the first group of the electrodes is intersected by a first plane having no thickness and each electrode of the second group of the electrodes is intersected by a second plane having no thickness when the structure is in the deployed configuration. The first and the second planes are non-parallel planes that intersect each other along a second axis, and at least a first electrode of the plurality of electrodes is intersected by each of the first plane and the second plane when the structure is in the deployed configuration. The first electrode is not intersected by each of the first axis and the second axis when the structure is in the deployed configuration.
In some embodiments, the second axis is parallel to the first axis. In some embodiments, the first axis and the second axis are collinear. In some embodiments, the first axis intersects at least one other electrode of the plurality of electrodes that does not include the first electrode when the structure is in the deployed configuration. In some embodiments, the second axis intersects at least one other electrode of the plurality of electrodes that does not include the first electrode when the structure is in the deployed configuration.
Each of the plurality of elongate members may include a curved portion having a curvature configured to cause the curved portion to extend along at least a portion of a respective curved path, the curvature configured to cause the curved path to intersect the first axis at each of a respective at least two spaced apart locations along the first axis when the structure is in the deployed configuration. At least some of the plurality of electrodes may be radially spaced about the first axis when the structure is in the deployed configuration. At least
some of the plurality of electrodes may be circumferentially arranged about the first axis when the structure is in the deployed configuration. The intermediate portion of the first elongate member may overlap the intermediate portion of the second elongate member at a location on the structure passed through by the first axis when the structure is in the deployed configuration. The intermediate portion of the first elongate member may overlap the intermediate portion of the second elongate member at each of a first location on the structure passed through by the first axis and a second location on the structure passed through by the second axis when the structure is in the deployed configuration. Each of the plurality of elongate members may be arranged to be advanced distal end- first into the bodily cavity when the structure is in the delivery configuration. The intermediate portion of the first elongate member may be adjacent the intermediate portion of the second elongate member when the structure is in the deployed configuration.
In some embodiments, the first group of the electrodes may include a pair of adjacent ones of the electrodes located on the first elongate member. A region of space associated with a physical portion of the structure may be located between the respective electrodes of the pair of adjacent ones of the electrodes located on the first elongate member, the region of space intersected by the first plane when the structure is in the deployed configuration. The respective electrodes of the first group of the electrodes may be spaced along a length of a portion of the first elongate member, the length of the portion of the first elongate member extending along the first elongate member between the proximal and the distal ends of the first elongate member. The entirety of the length of the portion of the elongate member may be intersected by the first plane when the structure is in the deployed configuration. The first group of the electrodes, the second group of the electrodes, or each of both the first and the second groups of the electrodes may include three or more of the plurality of electrodes.
In some embodiments, the first plane may intersect every electrode that is located on the first elongate member when the structure is in the deployed configuration. In some embodiments, the second plane may intersect every electrode that is located on the second elongate member when the structure is in the deployed configuration. In some embodiments, the first group of the electrodes includes the first electrode and the second group of the electrodes does not include the first electrode. At least some of the plurality of electrodes may be arranged in a plurality of concentric ringed arrangements when the structure is in the deployed configuration, a first one of the plurality of concentric ringed arrangements having a fewer number of the electrodes than a second one of the plurality of concentric ringed arrangements. The first one of the plurality of concentric ringed arrangements may include the
first electrode.
The first elongate member may include an edge interrupted by a notch, the notch located to expose at least a portion of at least a second electrode located on the second elongate member as viewed towards the second electrode along a direction parallel to a direction that the first axis extends along when the structure is in the deployed configuration. The second group of the electrodes may include the second electrode. The second electrode may be adjacent the first electrode when the structure is in the deployed configuration.
In some embodiments, the first elongate member may include a surface interrupted by a channel, the channel located to expose at least a portion of at least a second electrode located on the second elongate member as viewed towards the second electrode along a direction parallel to a direction that the first axis extends along when the structure is in the deployed configuration. In some embodiments, the first elongate member may include a jogged portion, the jogged portion undergoing at least one change in direction as the jogged portion extends between the proximal and the distal ends of the first elongate member. The jogged portion may be located to expose at least a portion of at least a second electrode located on the second elongate member as viewed towards the second electrode along a direction parallel to a direction that the first axis extends along when the structure is in the deployed configuration. In some embodiments, the intermediate portion of each elongate member of the plurality of elongate members includes a front surface and a back surface opposite across a thickness of the elongate member from the front surface. Each intermediate portion further includes a respective pair of side edges of the front surface, the back surface, or both the front surface and the back surface of the intermediate portion. The side edges of each pair of side edges are opposite to one another, each of the side edges of each pair of side edges extending between the proximal end and the distal end of the respective elongate member. The first elongate member may be positioned such that a first edge of the pair of side edges of the first elongate member crosses a second side edge of the pair of side edges of the second elongate member of the plurality of elongate members when the structure is in the deployed configuration. A portion of the first edge may form a recessed portion of the first elongate member that exposes at least a portion of a second electrode located on a portion of the front surface of the second elongate member as viewed normally to the portion of the front surface of the second elongate member when the structure is in the deployed configuration. The second group of the electrodes may include the second electrode. The second electrode may be adjacent the first electrode when the structure is in the deployed configuration.
In some embodiments, each of the respective intermediate portions of the
elongate members each may include a thickness, a front surface, and a back surface opposite across the thickness from the front surface. The respective intermediate portions of the plurality of elongate members may be arranged front surface-toward-back surface in a stacked array when the structure is in the delivery configuration. The structure may further include a proximal portion and a distal portion, each of the proximal and the distal portions including a respective part of each of the plurality of elongate members, the proximal portion of the structure forming a first domed shape and the distal portion of the structure forming a second domed shape when the structure is in the deployed configuration.
The structure may include a proximal portion and a distal portion with the structure arranged to be advanced distal portion first into the bodily cavity when the structure is in the delivery configuration. In some embodiments, the proximal portion of the structure forms a first domed shape and the distal portion of the structure forms a second domed shape when the structure is in the deployed configuration, the proximal and the distal portions of the structure arranged in a clam shell configuration when the structure is in the deployed configuration.
In some embodiments, the intermediate portions of at least some of the plurality of elongate members are, when the structure is in the deployed configuration, sufficiently spaced from the first axis to position each of at least some of the plurality of the electrodes at respective locations suitable for contact with a tissue wall of the bodily cavity.
Various systems may include combinations and subsets of the systems summarized above.
In some embodiments, a medical device system may be summarized as including a plurality of transducers positionable in a bodily cavity and a structure on which the transducers are located. The structure includes a plurality of elongate members, each of the elongate members including a proximal end, a distal end, an intermediate portion positioned between the proximal end and the distal end, and a thickness. Each intermediate portion includes a front surface and a back surface opposite across the thickness of the elongate member from the front surface, and each intermediate portion further includes a respective pair of side edges of the front surface, the back surface, or both the front surface and the back surface. The side edges of each pair of side edges are opposite to one another, and the side edges of each pair of side edges extend between the proximal end and the distal end of the respective elongate member. The structure is selectively moveable between a delivery configuration in which the structure is sized for percutaneous delivery to a bodily cavity, and a deployed configuration in which the structure is sized too large for percutaneous delivery to the bodily cavity. At least a first elongate member of the plurality of elongate members is positioned such that a first edge of the pair of side edges
of the first elongate member crosses a second side edge of the pair of side edges of a second elongate member of the plurality of elongate members when the structure is in the deployed configuration. A portion of the first edge forms a recessed portion of the first elongate member that exposes at least a portion of a transducer located on a portion of the front surface of the second elongate member as viewed normally to the portion of the front surface of the second elongate member when the structure is in the deployed configuration.
The recessed portion of the first elongate member may form at least a portion of a notch in the intermediate portion of the first elongate member, the notch extending towards a second edge of the pair of side edges of the first elongate member. The first elongate member may include a jogged portion, the jogged portion undergoing at least one change in direction as the jogged portion extends between the proximal and the distal ends of the first elongate member, the recessed portion of the first elongate member forming at least part of the jogged portion.
The intermediate portions of the elongate members may be angularly arranged with respect to one another about an axis when the structure is in the deployed configuration. At least some of the plurality of transducers may be radially spaced about an axis when the structure is in the deployed configuration. At least some of the plurality of transducers may be circumferentially arranged about an axis when the structure is in the deployed configuration. At least some of the plurality of transducers may be arranged in a plurality of concentric ringed arrangements when the structure is in the deployed configuration, a first one of the plurality of concentric ringed arrangements having a fewer number of the transducers than a second one of the plurality of concentric ringed arrangements. The first one of the plurality of concentric ringed arrangements may not include any of the plurality of transducers located on the second elongate member. The second one of the plurality of concentric ringed arrangements may include the transducer located on the portion of the front surface of the second elongate member. The first one of the plurality of concentric ringed arrangements may be adjacent the second one of the plurality of concentric ringed arrangements.
Each of the plurality of elongate members may be arranged to be advanced distal end-first into the bodily cavity when the structure is in the delivery configuration. The respective intermediate portions of the plurality of elongate members may be arranged front surface-toward-back surface in a stacked array when the structure is in the delivery
configuration. The structure may further include a proximal portion and a distal portion, each of the proximal and the distal portions including a respective part of each of the plurality of elongate members, the proximal portion of the structure forming a first domed shape and the
distal portion of the structure forming a second domed shape when the structure is in the deployed configuration.
The structure may include a proximal portion and a distal portion, with the structure arranged to be advanced distal portion first into the bodily cavity when the structure is in the delivery configuration. In some embodiments, the proximal portion of the structure forms a first domed shape and the distal portion of the structure forms a second domed shape when the structure is in the deployed configuration, the proximal and the distal portions of the structure arranged in a clam shell configuration when the structure is in the deployed configuration.
Various systems may include combinations and subsets of the systems summarized above.
In some embodiments, a medical device system may be summarized as including a plurality of electrodes positionable in a bodily cavity and a structure on which the electrodes are located. The structure includes a plurality of elongate members. The plurality of electrodes include a plurality of sets of the electrodes, each respective set of the electrodes located on a respective one of the elongate members. Each of the elongate members includes a proximal end, a distal end, an intermediate portion positioned between the proximal end and the distal end, and a thickness. Each intermediate portion includes a front surface and a back surface opposite across the thickness of the elongate member from the front surface. The structure is selectively moveable between a delivery configuration in which the structure is sized for percutaneous delivery to the bodily cavity and a deployed configuration in which the structure is sized too large for percutaneous delivery to the bodily cavity. A first elongate member of the plurality of elongate members is positioned such that a portion of the front surface of the first elongate member overlaps a portion of the respective front surface of each of at least a second elongate member of the plurality of elongate members as viewed normally to the portion of the front surface of the first elongate member when the structure is in the deployed configuration. At least a first electrode of the plurality of electrodes is located at least on the portion of the front surface of the first elongate member, and the portion of the front surface of the second elongate member faces the back surface of the first elongate member at least when the structure is in the deployed configuration.
Each of the front surfaces of the plurality of elongate members may face an outward direction of the structure when the structure is in the deployed configuration. The portion of the front surface of the second elongate member may face the back surface of the first elongate member when the structure is in the delivery configuration. The portion of the front surface of the second elongate member may contact the back surface of the first elongate
member when the structure is in the deployed configuration. Each electrode in each set of the plurality of electrodes may be located solely on the front surface of a respective one of the elongate members.
The intermediate portions of the elongate members may be angularly arranged with respect to one another about an axis when the structure is in the deployed configuration. At least some of the plurality of electrodes may be radially spaced about the axis when the structure is in the deployed configuration. At least some of the plurality of electrodes may be
circumferentially arranged about the axis when the structure is in the deployed configuration. The intermediate portion of the first elongate member may cross the intermediate portion of the second elongate member at a location on the structure intersected by the axis when the structure is in the deployed configuration. Each of the portion of the front surface of the first elongate member and the portion of the front surface of the second elongate member may be intersected by the axis when the structure is in the deployed configuration. The intermediate portion of the first elongate member may be adjacent the intermediate portion of the second elongate member when the structure is in the deployed configuration. At least one electrode of the plurality of electrodes may be intersected by the axis when the structure is in the deployed configuration. A particular electrode of the at least one electrode may be located adjacently to the first electrode on the portion of the front surface of the first elongate member. At least some of the plurality of electrodes may be arranged in a plurality of concentric ringed arrangements when the structure is in the deployed configuration, a first one of the plurality of concentric ringed arrangements having a fewer number of the electrodes than a second one of the plurality of concentric ringed arrangements. The first one of the plurality of concentric ringed arrangements may include the first electrode.
Each intermediate portion may further include a respective pair of side edges of the front surface, the back surface, or both the front surface and the back surface of the intermediate portion. The side edges of each pair of side edges are opposite to one another, and each of the side edges of each pair of side edges extend between the proximal end and the distal end of the respective elongate member. The first elongate member may be positioned such that a first edge of the pair of side edges of the first elongate member crosses a second side edge of the pair of side edges of the second elongate member when the structure is in the deployed configuration. A portion of the first edge may form a recessed portion of the first elongate member that exposes at least a portion of a second electrode located on the portion of the front surface of the second elongate member as viewed normally to the portion of the front surface of the second elongate member when the structure is in the deployed configuration.
Each of the plurality of elongate members may be arranged to be advanced distal end-first into the bodily cavity when the structure is in the delivery configuration. The respective intermediate portions of the plurality of elongate members may be arranged front surface-toward-back surface in a stacked array when the structure is in the delivery
configuration. The structure may further include a proximal portion and a distal portion, each of the proximal and the distal portions including a respective part of each of the plurality of elongate members. In some embodiments, the proximal portion of the structure forms a first domed shape and the distal portion of the structure forms a second domed shape when the structure is in the deployed configuration.
The structure may include a proximal portion and a distal portion, with the structure arranged to be advanced distal portion first into the bodily cavity when the structure is in the delivery configuration. In some embodiments, the proximal portion of the structure forms a first domed shape and the distal portion of the structure forms a second domed shape when the structure is in the deployed configuration, the proximal and the distal portions of the structure arranged in a clam shell configuration when the structure is in the deployed configuration.
Various systems may include combinations and subsets of the systems summarized above.
In some embodiments, a medical device system may be summarized as including a plurality of electrodes positionable in a bodily cavity and a structure on which the electrodes are located. The structure includes a plurality of elongate members, each of the elongate members including a proximal end, a distal end, an intermediate portion positioned between the proximal end and the distal end, and a thickness. Each intermediate portion includes a front surface and a back surface opposite across the thickness of the elongate member from the front surface. Each intermediate portion further includes a respective pair of side edges of the front surface, the back surface, or both the front surface and the back surface. The side edges of each pair of side edges opposite to one another. The side edges of each pair of side edges extend between the proximal end and the distal end of the respective elongate member. The structure is selectively moveable between a delivery configuration in which the structure is sized for percutaneous delivery to a bodily cavity and a deployed configuration in which the structure is sized too large for percutaneous delivery to the bodily cavity. At least a first elongate member of the plurality of elongate members is positioned such that a first side edge of the pair of side edges of the first elongate member crosses a first side edge of the pair of side edges of a second elongate member of the plurality of elongate members at a first location and crosses a second side edge of the pair of side edges of the second elongate member at a second location when the
structure is in the deployed configuration. Each of one or more of the plurality of electrodes is wholly located on a portion of the second elongate member, the portion of the second elongate member located between a first transverse line and a second transverse line when the structure is in the deployed configuration, the first transverse line extending across a first width of the second elongate member at the first location, and the second transverse line extending across a second width of the second elongate member at the second location.
The first width may be different than the second width. The first width and the second width may be widths of the front surface of the second elongate member. The one or more electrodes may include two or more of the plurality of electrodes. At least a portion of an electrode of the plurality of electrodes may be located on the portion of the second elongate member.
A first electrode of the one or more of the plurality of electrodes may include a first electrode edge that forms part of a periphery of an electrically conductive surface of the first electrode, the first electrode edge arranged to follow a portion of the first side edge of the first elongate member between the first location and the second location when the structure is in the deployed configuration. The first electrode may include a second electrode edge opposite across the electrically conductive surface from the first electrode edge, the second electrode edge forming part of the periphery of the electrically conductive surface of the first electrode. The second electrode edge may be arranged to follow a portion of one of the pair of side edges of the second elongate member.
The intermediate portions of the elongate members may be angularly arranged with respect to one another about an axis when the structure is in the deployed configuration. At least some of the plurality of electrodes may be radially spaced about the axis when the structure is in the deployed configuration. At least some of the plurality of electrodes may be
circumferentially arranged about the axis when the structure is in the deployed configuration. The intermediate portion of the first elongate member may cross the intermediate portion of the second elongate member at a location on the structure intersected by the axis when the structure is in the deployed configuration. The intermediate portion of the first elongate member may be adjacent the intermediate portion of the second elongate member when the structure is in the deployed configuration. A particular one of the plurality of electrodes may be intersected by the axis when the structure is in the deployed configuration. The one or more electrodes may include a first electrode, the first electrode located on the structure adjacent the particular one of the plurality of electrodes when the structure is in the deployed configuration. The one or more electrodes may include a first electrode, and at least some of the plurality of electrodes may be
arranged in a plurality of concentric ringed arrangements when the structure is in the deployed configuration. In some embodiments, a first one of the plurality of concentric ringed arrangements has a fewer number of the electrodes than a second one of the plurality of concentric ringed arrangements. The first one of the plurality of concentric ringed arrangements may include the first electrode.
A portion of the first side edge of the first elongate member extending between the first location and the second location may form a recessed portion of the first elongate member that exposes at least a portion of a particular electrode of the one or more electrodes as viewed normally to a surface of the exposed portion of the particular electrode of the one or more electrodes when the structure is in the deployed configuration.
Each of the plurality of elongate members may be arranged to be advanced distal end-first into the bodily cavity when the structure is in the delivery configuration. The respective intermediate portions of the plurality of elongate members may be arranged front surface-toward-back surface in a stacked array when the structure is in the delivery
configuration. The structure may further include a proximal portion and a distal portion, each of the proximal and the distal portions including a respective part of each of the plurality of elongate members. In some embodiments, the proximal portion of the structure forms a first domed shape and the distal portion of the structure forms a second domed shape when the structure is in the deployed configuration.
The structure may include a proximal portion and a distal portion, with the structure arranged to be advanced distal portion first into the bodily cavity when the structure is in the delivery configuration. In some embodiments, the proximal portion of the structure forms a first domed shape and the distal portion of the structure forms a second domed shape when the structure is in the deployed configuration, the proximal and the distal portions of the structure arranged in a clam shell configuration when the structure is in the deployed configuration.
Various systems may include combinations and subsets of all the systems summarized above.
BRIEF DESCRIPTION OF THE DRAWINGS
It is to be understood that the attached drawings are for purposes of illustrating aspects of various embodiments and may include elements that are not to scale.
Figure 1 is a schematic representation of a transducer-activation system according to example embodiments, the transducer-activation system including a data processing device system, an input-output device system, and a memory device system.
Figure 2 is a cutaway diagram of a heart showing a transducer-based device percutaneously placed in a left atrium of the heart according to example embodiments.
Figure 3A is a partially schematic representation of a medical device system according to example embodiments, the medical device system including a data processing device system, an input-output device system, a memory device system, and a transducer-based device having a plurality of transducers and an expandable structure shown in a delivery or unexpanded configuration.
Figure 3B is the medical device system of Figure 3A with the expandable structure shown in a deployed or expanded configuration.
Figure 3C is a representation of the expandable structure of the medical device system of Figure 3A in the deployed configuration, as viewed from a different viewing angle than that employed in Figure 3B.
Figure 3D is a plan view of the expandable structure of Figure 3C.
Figure 3E is an enlarged view of a portion of the expandable structure of Figure
3D.
Figure 3F is a representation of an expandable structure of a transducer-based device system according to various example embodiments, the expandable structure in a deployed configuration.
Figure 3G is a plan view of the expandable structure of Figure 3F.
Figure 3H is a perspective view of two of the elongate members of the expandable structure of Figures 3F and 3G, each of the elongate members shown in a flattened configuration.
Figure 31 is an enlarged view of a portion of the expandable structure of Figure
3G.
Figure 3J is a plan view of the expandable structure of Figure 3F with an elongate member of the structure omitted for clarity.
Figure 3K is a perspective view of two elongate members of an expandable structure of a transducer-based device system according to various embodiments, each of the elongate members shown in a flattened configuration.
Figure 4 is a schematic representation of a transducer-based device that includes a flexible circuit structure according to at least one example embodiment.
DETAILED DESCRIPTION
In the following description, certain specific details are set forth in order to provide a thorough understanding of various embodiments of the invention. However, one skilled in the art will understand that the invention may be practiced without one or more of these details. In other instances, well-known structures (e.g., structures associated with radio- frequency (RF) ablation and electronic controls such as multiplexers) have not been shown or described in detail to avoid unnecessarily obscuring descriptions of various embodiments of the invention.
Reference throughout this specification to "one embodiment" or "an embodiment" or "an example embodiment" or "an illustrated embodiment" or "a particular embodiment" and the like means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" or "in an example embodiment" or "in this illustrated embodiment" or "in this particular embodiment" and the like in various places throughout this specification are not necessarily all referring to the same embodiment.
Furthermore, the particular features, structures or characteristics of different embodiments may be combined in any suitable manner to form one or more other embodiments.
It is noted that, unless otherwise explicitly noted or required by context, the word "or" is used in this disclosure in a non-exclusive sense. In addition, unless otherwise explicitly noted or required by context, the word "set" is intended to mean one or more.
Further, the phrase "at least" is used herein at times to emphasize the possibility that other elements can exist besides those explicitly listed. However, unless otherwise explicitly noted (such as by the use of the term "only") or required by context, non-usage herein of the phrase "at least" does not exclude the possibility that other elements can exist besides those explicitly listed. For example, the phrase, "activation of at least transducer A" includes activation of transducer A by itself, as well as activation of transducer A and activation of one or more other additional elements besides transducer A. In the same manner, the phrase,
"activation of transducer A" includes activation of transducer A by itself, as well as activation of transducer A and activation of one or more other additional elements besides transducer A. However, the phrase, "activation of only transducer A" includes only activation of transducer A, and excludes activation of any other elements besides transducer A.
The word "ablation" as used in this disclosure should be understood to include any disruption to certain properties of tissue. Most commonly, the disruption is to the electrical conductivity and is achieved by heating, which can be generated with resistive or radio-
frequency (RF) techniques for example. Other properties, such as mechanical or chemical, and other means of disruption, such as optical, are included when the term "ablation" is used.
The word "fluid" as used in this disclosure should be understood to include any fluid that can be contained within a bodily cavity or can flow into or out of, or both into and out of a bodily cavity via one or more bodily openings positioned in fluid communication with the bodily cavity. In the case of cardiac applications, fluid such as blood will flow into and out of various intra-cardiac cavities (e.g. , a left atrium or right atrium).
The words "bodily opening" as used in this disclosure should be understood to include a naturally occurring bodily opening or channel or lumen; a bodily opening or channel or lumen formed by an instrument or tool using techniques that can include, but are not limited to, mechanical, thermal, electrical, chemical, and exposure or illumination techniques; a bodily opening or channel or lumen formed by trauma to a body; or various combinations of one or more of the above. Various elements having respective openings, lumens or channels and positioned within the bodily opening (e.g. , a catheter sheath or catheter introducer) may be present in various embodiments. These elements may provide a passageway through a bodily opening for various devices employed in various embodiments.
The words "bodily cavity" as used in this disclosure should be understood to mean a cavity in a body. The bodily cavity may be a cavity provided in a bodily organ (e.g., an intra-cardiac cavity of a heart).
The word "tissue" as used in some embodiments in this disclosure should be understood to include any surface-forming tissue that is used to form a surface of a body or a surface within a bodily cavity, a surface of an anatomical feature or a surface of a feature associated with a bodily opening positioned in fluid communication with the bodily cavity. The tissue can include part or all of a tissue wall or membrane that defines a surface of the bodily cavity. In this regard, the tissue can form an interior surface of the cavity that surrounds a fluid within the cavity. In the case of cardiac applications, tissue can include tissue used to form an interior surface of an intra-cardiac cavity such as a left atrium or right atrium. In some embodiments, the word tissue can refer to a tissue having fluidic properties (e.g., blood).
The term "transducer" as used in this disclosure should be interpreted broadly as any device capable of distinguishing between fluid and tissue, sensing temperature, creating heat, ablating tissue, measuring electrical activity of a tissue surface, stimulating tissue, or any combination thereof. A transducer can convert input energy of one form into output energy of another form. Without limitation, a transducer can include an electrode that functions as, or as part of, a sensing device included in the transducer, an energy delivery device included in the
transducer, or both a sensing device and an energy delivery device included in the transducer. A transducer may be constructed from several parts, which may be discrete components or may be integrally formed.
The term "activation" as used in this disclosure should be interpreted broadly as making active a particular function as related to various transducers disclosed in this disclosure. Particular functions can include, but are not limited to, tissue ablation, sensing
electrophysiological activity, sensing temperature and sensing electrical characteristics (e.g., tissue impedance). For example, in some embodiments, activation of a tissue ablation function of a particular transducer is initiated by causing energy sufficient for tissue ablation from an energy source device system to be delivered to the particular transducer. Alternatively, in this example, the activation can be deemed to be initiated when the particular transducer causes a temperature sufficient for the tissue ablation due to the energy provided by the energy source device system. Also in this example, the activation can last for a duration of time concluding when the ablation function is no longer active, such as when energy sufficient for the tissue ablation is no longer provided to the particular transducer. Alternatively, in this example, the activation period can be deemed to be concluded when the temperature caused by the particular transducer is below the temperature sufficient for the tissue ablation. In some contexts, however, the word "activation" can merely refer to the initiation of the activating of a particular function, as opposed to referring to both the initiation of the activating of the particular function and the subsequent duration in which the particular function is active. In these contexts, the phrase or a phrase similar to "activation initiation" may be used.
The term "program" in this disclosure should be interpreted as a set of instructions or modules that can be executed by one or more components in a system, such as a controller system or data processing device system, in order to cause the system to perform one or more operations. The set of instructions or modules can be stored by any kind of memory device, such as those described subsequently with respect to the memory device system 130 shown in Figure 1. In addition, instructions or modules of a program may be described as being configured to cause the performance of a function. The phrase "configured to" in this context is intended to include at least (a) instructions or modules that are presently in a form executable by one or more data processing devices to cause performance of the function (e.g., in the case where the instructions or modules are in a compiled and unencrypted form ready for execution), and (b) instructions or modules that are presently in a form not executable by the one or more data processing devices, but could be translated into the form executable by the one or more data processing devices to cause performance of the function (e.g., in the case where the instructions
or modules are encrypted in a non-executable manner, but through performance of a decryption process, would be translated into a form ready for execution). The word "module" can be defined as a set of instructions.
The word "device" and the phrase "device system" both are intended to include one or more physical devices or subdevices (e.g. , pieces of equipment) that interact to perform one or more functions, regardless of whether such devices or subdevices are located within a same housing or different housings. In this regard, for example, the phrase "catheter device" could equivalently be referred to as a "catheter device system".
In some contexts, the term "adjacent" is used in this disclosure to refer to objects that do not have another substantially similar object between them. For example, object A and object B could be considered adjacent if they contact each other (and, thus, it could be considered that no other object is between them), or if they do not contact each other, but no other object that is substantially similar to object A, object B, or both objects A and B, depending on context, is between them.
Further, the phrase "in response to" might be used in the following context, where an event A occurs in response to the occurrence of an event B. In this regard, such phrase can include, for example, that at least the occurrence of the event B causes or triggers the event A.
Figure 1 schematically illustrates a system 100 for activating transducers, according to some embodiments. The system 100 includes a data processing device system 110, an input-output device system 120, and a processor- accessible memory device system 130. The processor- accessible memory device system 130 and the input-output device system 120 are communicatively connected to the data processing device system 110.
The data processing device system 110 includes one or more data processing devices that implement methods by controlling or interacting with various structural components described herein, including, but not limited to, various structural components illustrated in the other Figures 2-4. Each of the phrases "data processing device", "data processor", "processor", and "computer" is intended to include any data processing device, such as a central processing unit ("CPU"), a desktop computer, a laptop computer, a mainframe computer, a tablet computer, a personal digital assistant, a cellular phone, and any other device for processing data, managing data, or handling data, whether implemented with electrical, magnetic, optical, biological components, or otherwise.
The memory device system 130 includes one or more processor- accessible memory devices configured to store information, including the information needed to execute
the methods implemented by the data processing device system 110. The memory device system 130 may be a distributed processor- accessible memory device system including multiple processor-accessible memory devices communicatively connected to the data processing device system 110 via a plurality of computers and/or devices. On the other hand, the memory device system 130 need not be a distributed processor- accessible memory system and, consequently, may include one or more processor-accessible memory devices located within a single housing or data processing device.
Each of the phrases "processor-accessible memory" and "processor-accessible memory device" is intended to include any processor-accessible data storage device, whether volatile or nonvolatile, electronic, magnetic, optical, or otherwise, including but not limited to, registers, floppy disks, hard disks, Compact Discs, DVDs, flash memories, ROMs, and RAMs. In some embodiments, each of the phrases "processor-accessible memory" and "processor- accessible memory device" is intended to include a non-transitory computer-readable storage medium. And in some embodiments, the memory device system 130 can be considered a non- transitory computer- readable storage medium system.
The phrase "communicatively connected" is intended to include any type of connection, whether wired or wireless, between devices, data processors, or programs in which data may be communicated. Further, the phrase "communicatively connected" is intended to include a connection between devices or programs within a single data processor, a connection between devices or programs located in different data processors, and a connection between devices not located in data processors at all. In this regard, although the memory device system 130 is shown separately from the data processing device system 110 and the input-output device system 120, one skilled in the art will appreciate that the memory device system 130 may be located completely or partially within the data processing device system 110 or the input-output device system 120. Further in this regard, although the input-output device system 120 is shown separately from the data processing device system 110 and the memory device system 130, one skilled in the art will appreciate that such system may be located completely or partially within the data processing system 110 or the memory device system 130, depending upon the contents of the input-output device system 120. Further still, the data processing device system 110, the input-output device system 120, and the memory device system 130 may be located entirely within the same device or housing or may be separately located, but communicatively connected, among different devices or housings. In the case where the data processing device system 110, the input-output device system 120, and the memory device system 130 are located
within the same device, the system 100 of Figure 1 can be implemented by a single application- specific integrated circuit (ASIC) in some embodiments.
The input-output device system 120 may include a mouse, a keyboard, a touch screen, another computer, or any device or combination of devices from which a desired selection, desired information, instructions, or any other data is input to the data processing device system 110. The input-output device system may include a user-activatable control system that is responsive to a user action. The input-output device system 120 may include any suitable interface for receiving information, instructions or any data from other devices and systems described in various ones of the embodiments. In this regard, the input-output device system 120 may include various ones of other systems described in various embodiments. For example, the input-output device system 120 may include at least a portion of a transducer-based device system. The phrase "transducer-based device system" is intended to include one or more physical systems that include one or more physical devices that include transducers.
The input-output device system 120 also may include an image generating device system, a display device system, a processor-accessible memory device, or any device or combination of devices to which information, instructions, or any other data is output by the data processing device system 110. In this regard, if the input-output device system 120 includes a processor-accessible memory device, such memory device may or may not form part or all of the memory device system 130. The input-output device system 120 may include any suitable interface for outputting information, instructions or data to other devices and systems described in various ones of the embodiments. In this regard, the input-output device system may include various other devices or systems described in various embodiments. For example, the input- output device system may include a portion of a transducer-based device system.
Various embodiments of transducer-based devices are described herein. Some of the described devices are medical devices that are percutaneously or intravascularly deployed. Some of the described devices are moveable between a delivery or unexpanded configuration in which a portion of the device is sized for passage through a bodily opening leading to a bodily cavity, and an expanded or deployed configuration in which the portion of the device has a size too large for passage through the bodily opening leading to the bodily cavity. An example of an expanded or deployed configuration is when the portion of the transducer-based device is in its intended-deployed-operational state inside the bodily cavity. Another example of the expanded or deployed configuration is when the portion of the transducer-based device is being changed from the delivery configuration to the intended-deployed-operational state to a point where the
portion of the device now has a size too large for passage through the bodily opening leading to the bodily cavity.
In some example embodiments, the device includes transducers that sense characteristics (e.g. , convective cooling, permittivity, force) that distinguish between fluid, such as a fluidic tissue (e.g. , blood), and tissue forming an interior surface of the bodily cavity. Such sensed characteristics can allow a medical device system to map the cavity, for example using positions of openings or ports into and out of the cavity to determine a position or orientation (i. e. , pose), or both of the portion of the device in the bodily cavity. In some example embodiments, the described devices are capable of ablating tissue in a desired pattern within the bodily cavity. In some example embodiments, the devices are capable of sensing characteristics (e.g. , electrophysiological activity) indicative of whether an ablation has been successful. In some example embodiments, the devices are capable of providing stimulation (e.g., electrical stimulation) to tissue within the bodily cavity. Electrical stimulation may include pacing.
Figure 2 shows a transducer-based device 200, which may be all or part of a medical device system, useful in investigating or treating a bodily organ, for example a heart 202, according to some example embodiments.
Transducer-based device 200 can be percutaneously or intravascularly inserted into a portion of the heart 202, such as an intra-cardiac cavity like left atrium 204. In this example, the transducer-based device 200 is part of a catheter 206 inserted via the inferior vena cava 208 and penetrating through a bodily opening in transatrial septum 210 from right atrium 212. In other embodiments, other paths may be taken.
Catheter 206 includes an elongated flexible rod or shaft member appropriately sized to be delivered percutaneously or intravascularly. Various portions of catheter 206 may be steerable. Catheter 206 may include one or more lumens (not shown). The lumen(s) may carry one or more communications or power paths, or both. For example, the lumens(s) may carry one or more electrical conductors 216 (two shown in this embodiment). Electrical conductors 216 provide electrical connections to device 200 that are accessible externally from a patient in which the transducer-based device 200 is inserted.
Transducer-based device 200 includes a frame or structure 218 which assumes an unexpanded configuration for delivery to left atrium 204. Structure 218 is expanded (i. e. , shown in a deployed or expanded configuration in Figure 2) upon delivery to left atrium 204 to position a plurality of transducers 220 (three called out in Figure 2) proximate the interior surface formed by tissue 222 of left atrium 204. In some embodiments, at least some of the transducers 220 are used to sense a physical characteristic of a fluid (i.e. , blood) or tissue 222, or both, that may be
used to determine a position or orientation (i. e., pose), or both, of a portion of a device 200 within, or with respect to left atrium 204. For example, transducers 220 may be used to determine a location of pulmonary vein ostia (not shown) or a mitral valve 226, or both. In some embodiments, at least some of the transducers 220 may be used to selectively ablate portions of the tissue 222. For example, some of the transducers 220 may be used to ablate a pattern or path around various ones of the bodily openings, ports or pulmonary vein ostia, for instance to reduce or eliminate the occurrence of atrial fibrillation.
Figures 3A, 3B, 3C, 3D and 3E show a transducer-based device system (i. e., a portion thereof shown schematically) that includes a transducer-based device 300 according to one illustrated embodiment. Transducer-based device 300 includes a plurality of elongate members 304 (three called out in each of Figures 3A and 3B, and three are called out in each of Figures 3C, 3D and 3E as 304a, 304b and 304c) and a plurality of transducers 306 (three called out in Figure 3A, three called out in Figure 3B as 306a, 306b and 306c, and seven called out in each of Figures 3C and 3D, six of the seven identified as 306q, 306r, 306s, 306t, 306u and 306v). As will become apparent, the plurality of transducers 306 are positionable within a bodily cavity. For example, in some embodiments, the transducers 306 are able to be positioned in a bodily cavity by movement into, within, or into and within the bodily cavity, with or without a change in a configuration of the plurality of transducers 306. In some embodiments, the plurality of transducers 306 are arrangeable to form a two- or three-dimensional distribution, grid or array of the transducers capable of mapping, ablating or stimulating an inside surface of a bodily cavity or lumen without requiring mechanical scanning. As shown for example, in Figure 3A, the plurality of transducers 306 are arranged in a distribution receivable in a bodily cavity (not shown in Figure 3A). As shown for example, in Figure 3 A, the plurality of transducers 306 are arranged in a distribution suitable for delivery to a bodily cavity (not shown in Figure 3A). (It should also be noted, for example, that the expanded or deployed
configuration (e.g. , Figures 2, 3B-3G, 31, and 3J) also provide transducers 306 arranged in a distribution receivable in a bodily cavity.)
The elongate members 304 are arranged in a frame or structure 308 that is selectively movable between an unexpanded or delivery configuration (i. e., as shown in Figure 3 A) and an expanded or deployed configuration (i. e., as shown in Figure 3B) that may be used to position elongate members 304 against a tissue surface within the bodily cavity or position the elongate members 304 in the vicinity of or in contact with the tissue surface. In some embodiments, structure 308 has a size in the unexpanded or delivery configuration suitable for percutaneous delivery through a bodily opening (i. e., via catheter sheath 312, not shown in
Figure 3B) to the bodily cavity. In some embodiments, structure 308 has a size in the expanded or deployed configuration too large for percutaneous delivery through a bodily opening (i. e., via catheter sheath 312) to the bodily cavity. The elongate members 304 may form part of a flexible circuit structure (i. e. , also known as a flexible printed circuit board (PCB) circuit). The elongate members 304 can include a plurality of different material layers, and each of the elongate members 304 can include a plurality of different material layers. The structure 308 can include a shape memory material, for instance Nitinol. The structure 308 can include a metallic material, for instance stainless steel, or non-metallic material, for instance polyimide, or both a metallic and non metallic material by way of non-limiting example. The incorporation of a specific material into structure 308 may be motivated by various factors including the specific requirements of each of the unexpanded or delivery configuration and expanded or deployed configuration, the required position or orientation (i. e. , pose) or both of structure 308 in the bodily cavity, or the requirements for successful ablation of a desired pattern.
Figure 4 is a schematic side elevation view of at least a portion of a transducer- based device 400 that includes a flexible circuit structure 401 that is employed to provide a plurality of transducers 406 (two called out) according to an example embodiment. In some embodiments, the flexible circuit structure 401 may form part of a structure (e.g. , structure 308) that is selectively movable between a delivery configuration sized for percutaneous delivery and expanded or deployed configurations sized too large for percutaneous delivery. In some embodiments, the flexible circuit structure 401 may be located on, or form at least part of, of a structural component (e.g. , elongate member 304) of a transducer-based device system.
The flexible circuit structure 401 can be formed by various techniques including flexible printed circuit techniques. In some embodiments, the flexible circuit structure 401 includes various layers including flexible layers 403a, 403b and 403c (i. e., collectively flexible layers 403). In some embodiments, each of flexible layers 403 includes an electrical insulator material (e.g., polyimide). One or more of the flexible layers 403 can include a different material than another of the flexible layers 403. In some embodiments, the flexible circuit structure 401 includes various electrically conductive layers 404a, 404b and 404c (collectively electrically conductive layers 404) that are interleaved with the flexible layers 403. In some embodiments, each of the electrically conductive layers 404 is patterned to form various electrically conductive elements. For example, electrically conductive layer 404a is patterned to form a respective electrode 415 of each of the transducers 406. Electrodes 415 have respective electrode edges 415- 1 that form a periphery of an electrically conductive surface associated with the respective electrode 415. Figure 3C shows another example of electrode edges 315- 1 and
illustrates that the electrode edges can define electrically-conductive-surface-peripheries of various shapes.
Returning to Figure 4, electrically conductive layer 404b is patterned, in some embodiments, to form respective temperature sensors 408 for each of the transducers 406 as well as various leads 410a arranged to provide electrical energy to the temperature sensors 408. In some embodiments, each temperature sensor 408 includes a patterned resistive member 409 (two called out) having a predetermined electrical resistance. In some embodiments, each resistive member 409 includes a metal having relatively high electrical conductivity
characteristics (e.g. , copper). In some embodiments, electrically conductive layer 404c is patterned to provide portions of various leads 410b arranged to provide an electrical
communication path to electrodes 415. In some embodiments, leads 410b are arranged to pass though vias (not shown) in flexible layers 403a and 403b to connect with electrodes 415.
Although Figure 4 shows flexible layer 403c as being a bottom-most layer, some embodiments may include one or more additional layers underneath flexible layer 403c, such as one or more structural layers, such as a steel or composite layer. These one or more structural layers, in some embodiments, are part of the flexible circuit structure 401 and can be part of, e.g. , elongate member 304. In addition, although Figure 4 shows only three flexible layers 403a-403c and only three electrically conductive layers 404a-404c, it should be noted that other numbers of flexible layers, other numbers of electrically conductive layers, or both, can be included.
In some embodiments, electrodes 415 are employed to selectively deliver RF energy to various tissue structures within a bodily cavity (not shown) (e.g., an intra-cardiac cavity). The energy delivered to the tissue structures may be sufficient for ablating portions of the tissue structures. The energy delivered to the tissue may be delivered to cause monopolar tissue ablation, bipolar tissue ablation or blended monopolar-bipolar tissue ablation by way of non-limiting example.
In some embodiments, each electrode 415 is employed to sense an electrical potential in the tissue proximate the electrode 415. In some embodiments, each electrode 415 is employed in the generation of an intra-cardiac electrogram. In some embodiments, each resistive member 409 is positioned adjacent a respective one of the electrodes 415. In some embodiments, each of the resistive members 409 is positioned in a stacked or layered array with a respective one of the electrodes 415 to form a respective one of the transducers 406. In some embodiments, the resistive members 409 are connected in series to allow electrical current to pass through all of the resistive members 409. In some embodiments, leads 410a are arranged to allow for a sampling of electrical voltage in between each resistive members 409. This
arrangement allows for the electrical resistance of each resistive member 409 to be accurately measured. The ability to accurately measure the electrical resistance of each resistive member 409 may be motivated by various reasons including determining temperature values at locations at least proximate the resistive member 409 based at least on changes in the resistance caused by convective cooling effects (e.g., as provided by blood flow). In some embodiments in which the transducer-based device is deployed in a bodily cavity (e.g., when the transducer-based device takes the form of a catheter device arranged to be percutaneously or intravascularly delivered to a bodily cavity), it may be desirable to perform various mapping procedures in the bodily cavity. For example, when the bodily cavity is an intra-cardiac cavity, a desired mapping procedure can include mapping electrophysiological activity in the intra-cardiac cavity. Other desired mapping procedures can include mapping of various anatomical features within a bodily cavity. An example of the mapping performed by devices according to various embodiments may include locating the position of the ports of various bodily openings positioned in fluid communication with a bodily cavity. For example, in some embodiments, it may be desired to determine the locations of various ones of the pulmonary veins or the mitral valve that each interrupts an interior surface of an intra-cardiac cavity such as a left atrium.
In some example embodiments, the mapping is based at least on locating bodily openings by differentiating between fluid and tissue (e.g., tissue defining a surface of a bodily cavity). There are many ways to differentiate tissue from a fluid such as blood or to differentiate tissue from a bodily opening in case a fluid is not present. Four approaches may include by way of non-limiting example:
1. The use of convective cooling of heated transducer elements by fluid. An arrangement of slightly heated transducers that is positioned adjacent to the tissue that forms the interior surface(s) of a bodily cavity and across the ports of the bodily cavity will be cooler at the areas which are spanning the ports carrying the flow of fluid.
2. The use of tissue impedance measurements. A set of transducers positioned adjacently to tissue that forms the interior surface(s) of a bodily cavity and across the ports of the bodily cavity can be responsive to electrical tissue impedance. Typically, heart tissue will have higher associated tissue impedance values than the impedance values associated with blood.
3. The use of the differing change in dielectric constant as a function of frequency between blood and tissue. A set of transducers positioned around the tissue that forms the interior surface(s) of the atrium and across the ports of the atrium monitors the ratio of
the dielectric constant from lKHz to lOOKHz. Such can be used to determine which of those transducers are not proximate to tissue, which is indicative of the locations of the ports.
4. The use of transducers that sense force (i. e. , force sensors). A set of force detection transducers positioned around the tissue that forms the interior surface(s) of a bodily cavity and across the bodily openings or ports of the bodily cavity can be used to determine which of the transducers are not engaged with the tissue, which may be indicative of the locations of the ports.
Referring to Figures 3A, 3B, transducer-based device 300 can communicate with, receive power from or be controlled by a transducer- activation system 322. In some
embodiments, elongate members 304 can form a portion of an elongated cable 316 of control leads 317, for example by stacking multiple layers, and terminating at a connector 321 or other interface with transducer-activation system 322. The control leads 317 may correspond to the electrical connectors 216 in Figure 2 in some embodiments. The transducer-activation device system 322 may include a controller 324 that includes a data processing device system 310 (e.g., from Figure 1) and a memory device system 330 (e.g., from Figure 1) that stores data and instructions that are executable by the data processing device system 310 to process information received from transducer-based device 300 or to control operation of transducer-based device 300, for example activating various selected transducers 306 to ablate tissue. Controller 324 may include one or more controllers.
Transducer-activation device system 322 includes an input-output device system
320 (e.g., an example of 120 from Figure 1) communicatively connected to the data processing device system 310 (i.e., via controller 324 in some embodiments). Input-output device system 320 may include a user-activatable control that is responsive to a user action. Input-output device system 320 may include one or more user interfaces or input/output (I/O) devices, for example one or more display device systems 332, speaker device systems 334, keyboards, mice, joysticks, track pads, touch screens or other transducers to transfer information to, from, or both to and from a user, for example a care provider such as a physician or technician. For example, output from a mapping process may be displayed on a display device system 332.
Transducer-activation device system 322 may also include an energy source device system 340 including one or more energy source devices connected to transducers 306. In this regard, although Figure 3A shows a communicative connection between the energy source device system 340 and the controller 324 (and its data processing device system 310), the energy source device system 340 may also be connected to the transducers 306 via a
communicative connection that is independent of the communicative connection with the
controller 324 (and its data processing device system 310). For example, the energy source device system 340 may receive control signals via the communicative connection with the controller 324 (and its data processing device system 310), and, in response to such control signals, deliver energy to, receive energy from, or both deliver energy to and receive energy from one or more of the transducers 306 via a communicative connection with such transducers 306 (e.g., via one or more communication lines through catheter body 314, elongated cable 316 or catheter sheath 312) that does not pass through the controller 324. In this regard, the energy source device system 340 may provide results of its delivering energy to, receiving energy from, or both delivering energy to and receiving energy from one or more of the transducers 306 to the controller 324 (and its data processing device system 310) via the communicative connection between the energy source device system 340 and the controller 324.
In any event, the number of energy source devices in the energy source device system 340 is fewer than the number of transducers in some embodiments. The energy source device system 340 may, for example, be connected to various selected transducers 306 to selectively provide energy in the form of electrical current or power (e.g., RF energy), light or low temperature fluid to the various selected transducers 306 to cause ablation of tissue. The energy source device system 340 may, for example, selectively provide energy in the form of electrical current to various selected transducers 306 and measure a temperature characteristic, an electrical characteristic, or both at a respective location at least proximate each of the various transducers 306. The energy source device system 340 may include as its energy source devices various electrical current sources or electrical power sources. In some embodiments, an indifferent electrode 326 is provided to receive at least a portion of the energy transmitted by at least some of the transducers 306. Consequently, although not shown in Figure 3A, the indifferent electrode 326 may be communicatively connected to the energy source device system 340 via one or more communication lines in some embodiments. In addition, although shown separately in Figure 3 A, indifferent electrode 326 may be considered part of the energy source device system 340 in some embodiments. In some embodiments, the indifferent electrode 326 is provided outside the body or at least the bodily cavity in which the transducer-based device (e.g., 200 or 300) is located.
It is understood that input-output device system 320 may include other systems.
In some embodiments, input-output device system 320 may optionally include energy source device system 340, transducer-based device 300 or both energy source device system 340 and transducer-based device 300 by way of non-limiting example.
Structure 308 can be delivered and retrieved via a catheter member, for example a catheter sheath 312. In some embodiments, a structure provides expansion and contraction capabilities for a portion of a medical device (e.g. , an arrangement, distribution or array of transducers 306). The transducers 306 can form part of, be positioned or located on, mounted or otherwise carried on the structure and the structure may be configurable to be appropriately sized to slide within catheter sheath 312 in order to be deployed percutaneously or
intravascularly. Figure 3A shows one embodiment of such a structure. In some embodiments, each of the elongate members 304 includes a respective distal end 305 (only one called out), a respective proximal end 307 (only one called out) and an intermediate portion 309 (only one called out) positioned between the proximal end 307 and the distal end 305. The respective intermediate portion 309 of each elongate member 304 includes a first or front surface 318a that is positionable to face an interior tissue surface within a bodily cavity (not shown) and a second or back surface 318b opposite across a thickness of the intermediate portion 309 from the front surface 318a. In various embodiments, the intermediate portion 309 of each of the elongate members 304 includes a respective pair of side edges of the front surface 318a, the back surface 318b, or both the front surface 318a and the back surface 318b, the side edges of each pair of side edges opposite to one another, the side edges of each pair of side edges extending between the proximal end 307 and the distal end 305 of the respective elongate member 304. In some embodiments, each pair of side edges includes a first side edge 327a (only one called out in Figure 3A) and a second side edge 327b (only one called out in Figure 3A). In some embodiments, each of the elongate members 304, including each respective intermediate portion 309, is arranged front surface 318a-toward-back surface 318b in a stacked array during an unexpanded or delivery configuration similar to that described in co-assigned International Application No.: PCT/US2012/022061 and co-assigned International Application No.:
PCT/US2012/022062. In many cases a stacked array allows the structure 308 to have a suitable size for percutaneous or intravascular delivery. In some embodiments, the elongate members
304 are arranged to be introduced into a bodily cavity (again not shown in Figure 3A) distal end
305 first. For clarity, not all of the elongate members 304 of structure 308 are shown in Figure 3 A. A flexible catheter body 314 is used to deliver structure 308 through catheter sheath 312. In some embodiments, each elongate member includes a twisted portion proximate at proximal end 307. Similar twisted portions are described in co-assigned International Application No.: PCT/US2012/022061 and co-assigned International Application No.: PCT/US2012/022062.
In a manner similar to that described in co-assigned International Application No.: PCT/US2012/022061 and co-assigned International Application No.:
PCT/US2012/022062, each of the elongate members 304 is arranged in a fanned arrangement 370 in Figure 3B. In some embodiments, the fanned arrangement 370 is formed during the expanded or deployed configuration in which structure 308 is manipulated to have a size too large for percutaneous or intravascular delivery. In some embodiments, structure 308 includes a proximal portion 308a having a first domed shape 309a and a distal portion 308b having a second domed shape 309b. In some embodiments, the proximal and the distal portions 308a, 308b include respective portions of elongate members 304. In some embodiments, the structure 308 is arranged to be delivered distal portion 308b first into a bodily cavity (again not shown) when the structure is in the unexpanded or delivery configuration as shown in Figure 3A. In some embodiments, the proximal and the distal portions 308a, 308b are arranged in a clam shell configuration in the expanded or deployed configuration shown in Figure 3B. In various example embodiments, each of the front surfaces 318a (three called out in Figure 3B) of the intermediate portions 309 of the plurality of elongate members 304 face outwardly from the structure 308 when the structure 308 is in the deployed configuration. In various example embodiments, each of the front surfaces 318a of the intermediate portions 309 of the plurality of elongate members 304 are positioned adjacent an interior tissue surface of a bodily cavity (not shown) in which the structure 308 (i.e., in the deployed configuration) is located. In various example embodiments, each of the back surfaces 318b (two called out in Figure 3B) of the intermediate portions 309 of the plurality of elongate members 304 face an inward direction when the structure 308 is in the deployed configuration.
The transducers 306 can be arranged in various distributions or arrangements in various embodiments. In some embodiments, various ones of the transducers 306 are spaced apart from one another in a spaced apart distribution in the delivery configuration shown in Figure 3A. In some embodiments, various ones of the transducers 306 are arranged in a spaced apart distribution in the deployed configuration shown in Figure 3B. In some embodiments, various pairs of transducers 306 are spaced apart with respect to one another. In some embodiments, various regions of space are located between various pairs of the transducers 306. For example, in Figure 3B the transducer-based device 300 includes at least a first transducer 306a, a second transducer 306b and a third transducer 306c (all collectively referred to as transducers 306). In some embodiments each of the first, the second, and the third transducers 306a, 306b and 306c are adjacent transducers in the spaced apart distribution. In some embodiments, the first and the second transducers 306a, 306b are located on different elongate members 304 while the second and the third transducers 306b, 306c are located on a same elongate member 304. In some embodiments, a first region of space 350 is between the first and
the second transducers 306a, 306b. In some embodiments, the first region of space 350 is not associated with any physical portion of structure 308. In some embodiments, a second region of space 360 associated with a physical portion of device 300 (i. e., a portion of an elongate member 304) is between the second and the third transducers 306b, 306c. In some embodiments, each of the first and the second regions of space 350, 360 does not include a transducer of transducer- based device 300. In some embodiments, each of the first and the second regions of space 350, 360 does not include any transducer. It is noted that other embodiments need not employ a group of elongate members 304 as employed in the illustrated embodiment. For example, other embodiments may employ a structure having one or more surfaces, at least a portion of the one or more surfaces defining one or more openings in the structure. In these embodiments, a region of space not associated with any physical portion of the structure may extend over at least part of an opening of the one or more openings. In other example embodiments, other structures may be employed to support or carry transducers of a transducer-based device such as a transducer- based catheter. For example, an elongated catheter member may be used to distribute the transducers in a linear or curvilinear array. Basket catheters or balloon catheters may be used to distribute the transducers in a two-dimensional or three-dimensional array.
In various example embodiments, at least some of the plurality of transducers 306 include respective electrodes 315 (seven called out in each of Figures 3C, 3D, six of the seven called out as 315q, 315r, 315s, 315t, 315u and 315v), each electrode 315 including a respective energy transmission surface 319 (one called out in Figure 3C, three called out in Figure 3D, two of the three called out as 319u, 319v) configured for transferring energy to tissue, from tissue or both to and from tissue. In various embodiments, each of the energy transmission surfaces 319 is provided by an electrically conductive surface. In some embodiments, each of the electrodes 315 is solely located on a surface of an elongate member 304 (e.g., front surfaces 318a or back surfaces 318b). In some embodiments, various electrodes 315 are located on one, but not both of the respective front surface 318a and respective back surface 318b of each of various ones of the elongate members 304.
Various conventional percutaneous or intravascular transducer-based device systems employ, or have employed, relatively low numbers of transducers typically on the order of 64 or fewer transducers or a number of transducers arranged with a relatively low spatial distribution density (e.g., a relatively low number of transducers arranged per a given area). Various embodiments disclosed in this detailed description may employ distributions of transducers having relatively high spatial densities (e.g., a relatively high number of transducers arranged per a given region of space) than conventionally employed. Increased number of
transducers or increased spatial densities of transducers within a particular distribution of the transducers may be motivated for various reasons. For example, increased numbers of transducers may allow for higher spatial densities in the distributions of the transducers to allow the transducers to interact with a tissue region of a bodily cavity with greater resolution and accuracy. The interactions may include ablation, temperature detection, impedance detection, electrophysiological activity detection and tissue stimulation by way of non- limiting example. In some case, distributions of transducers having relatively high spatial densities may provide enhanced diagnostic or treatment procedures performed on a given tissue region by allowing for the interaction of a greater number of transducers with the given tissue region. Various embodiments disclosed in this detailed description may employ 100 or more transducers, 200 or more transducers or even 300 or more transducers. Various transducer-based devices disclosed in this detailed description (e.g., as depicted at least in part in Figures 3A, 3B, 3C, 3D, 3E, 3F, 3G, 3H, 31, 3J and 3K) are representative of various embodiments that employ several hundreds of transducers. Various transducer-based devices disclosed in this detailed description (e.g., as depicted at least in part in Figures 3A, 3B, 3C, 3D, 3E, 3F, 3G, 3H, 31, 3J and 3K) are representative of various embodiments that employ distributions of transducers having relatively higher spatial densities. Although transducers 306, electrodes 315 or both transducers 306 and electrodes 315 are referenced with respect to various embodiments, it is understood that other transducers or transducer elements may be employed in other embodiments. It is understood that a reference to a particular transducer 306 in various embodiments may also imply a reference to an electrode 315, as an electrode 315 may be part of the transducer 306 as shown, e.g. , with Figure 4.
Figure 3C is a perspective view of at least one embodiment of the transducer- based device 300 as viewed from a viewing angle that is different from that shown in Figure 3B. For clarity of illustration, only structure 308 including various ones of the elongate members 304, and a portion of catheter body 314 are shown in Figure 3C. In a manner similar to that shown in Figure 3B, transducer-based device 300 is shown in the expanded or deployed configuration. In some embodiments, the respective intermediate portions 309 (only two called out) of various ones of the elongate members 304 are angularly arranged with respect to one another about a first axis 335a when structure 308 is in the deployed configuration. In various embodiments, the respective intermediate portions 309 of a respective pair of the elongate members 304 are angularly spaced with respect to one another by a respective angle radiating from a point on the first axis 335a when structure 308 is in the deployed configuration. The same may apply for each pair of adjacent elongate members 304 in some embodiments. In
various embodiments, the intermediate portions 309 of various ones of the elongate members 304 are radially arranged about first axis 335a when structure 308 is in the deployed
configuration. In various embodiments, the intermediate portions 309 of various ones of the elongate members 304 are circumferentially arranged about first axis 335a when structure 308 is in the deployed configuration, similar to lines of longitude about an axis of rotation of a body of revolution, which body of revolution may, or may not be spherical. Use of the word
circumference in this detailed description, and derivatives thereof, such as circumferential, circumscribe, circumlocutory and other derivatives, refers to a boundary line of a shape, volume or object which may, or may not, be circular or spherical. In some embodiments, each of the elongate members 304 includes a curved portion 323 (only two called out) having a curvature configured to cause the curved portion 323 to extend along at least a portion of a curved path, the curvature configured to cause the curved path to intersect the first axis 335a at each of a respective at least two spaced apart locations along the first axis 335a when structure 308 is in the deployed configuration. In some embodiments, the curved path is defined to include an imagined extension of the curved portion along the curved portion's extension direction while maintaining the curved portion's curvature. In some embodiments, each curved portion 323 may extend entirely along, or at least part way along the respective curved path to physically intersect at least one of the respective at least two spaced apart locations along the first axis 335a. In some particular embodiments, no physical portion of a given elongate member of an employed structure intersects any of the at least two spaced apart locations along the first axis 335a intersected by the respective curved path associated with the curved portion 323 of the given elongate member. For example, the end portion of the given elongate member may be physically separated from the first axis 335a by hub system (not shown) employed to physically couple or align the elongate member to other elongate members. Additionally or alternatively, a given elongate member may include a recurve portion arranged to physically separate the given elongate member from the first axis 335a. In some embodiments, various ones of the elongate members 304 cross one another at a location on the structure 308 passed through by the first axis 335a when the structure 308 is in the deployed configuration. In various embodiments, the curved path is an arcuate path. In various embodiments, at least the portion of the curved path extended along by corresponding curved portion 323 is arcuate. As used herein, the word "curvature" should be understood to mean a measure or amount of curving. In some embodiments, the word "curvature" is associated with a rate of change of the angle through which the tangent to a curve turns in moving along the curve.
In some embodiments, the intermediate portion 309 of first elongate member 304a overlaps the intermediate portion 309 of a second elongate member 304b at a location on structure 308 passed through by first axis 335a when structure 308 is in the deployed configuration. In some embodiments, the intermediate portions 309 of the first elongate member 304a and the second elongate member 304b cross at a location on structure 308 passed through, or intersected, by first axis 335a when structure 308 is in the deployed configuration. In some embodiments, the intermediate portion 309 of first elongate member 304a is adjacent the intermediate portion 309 of the second elongate member 304b when structure 308 is in the deployed configuration. In various embodiments, the intermediate portions 309 of at least some of the plurality of elongate members 304 are, when the structure 309 is in the deployed configuration, sufficiently spaced from the first axis 335a to position each of at least some of the plurality of the electrodes 315 at respective locations suitable for contact with a tissue wall of the bodily cavity (not shown in Figure 3C).
In various embodiments, at least some of the transducers 306 are radially spaced about first axis 335a when structure 308 is in the deployed configuration. For example, various ones of the electrodes 315 are radially spaced about first axis 335a in the deployed configuration in at least some of the embodiments associated with various ones of Figures 3B, 3C, 3D and 3E. In various embodiments, at least some of the transducers 306 are circumferentially arranged about first axis 335a when structure 308 is in the deployed configuration. For example, various ones of the electrodes 315 are circumferentially arranged about first axis 335a in the deployed configuration in at least some of the embodiments associated with various ones of Figures 3B, 3C, 3D and 3E. Various methods may be employed to describe the various spatial relationships of the transducers 306 or electrodes 315 or various sets of transducers 306 or sets of electrodes 315 employed according to various embodiments. For example, in Figures 3C and 3D the plurality of the electrodes 315 includes a first group 336a (not called out in Figure 3E) of the electrodes 315 located on first elongate member 304a and a second group 338a (not called out in Figure 3E) of the electrodes 315 located on second elongate member 304b. It is understood that although electrodes are referred to in these described embodiments, the same analysis applies to the corresponding transducers in some embodiments. It is understood that although groups of electrodes are referred to in these described embodiments, the plurality of electrodes 315 may form part of a plurality of sets of one or more of the electrodes 315, each respective set of the electrodes 315 located on a respective one of the elongate members 304 in other embodiments. The electrodes 315 of the first group 336a are arranged such that each electrode 315 of the first group 336a is intersected by a first plane 342a having no thickness. The phrase "no thickness"
in this and similar contexts means no thickness, practically no thickness, or infinitely small thickness, and excludes perceptibly large thicknesses like thicknesses on the order of a size of an electrode 315. The electrodes 315 of the second group 338a are arranged such that each electrode 315 of the second group 338a is intersected by a second plane 344a having no thickness. For clarity, the intersection of each electrode 315 of the first group 336a by first plane 342a is represented in Figure 3C by intersection line 345a. For clarity, the intersection of each electrode 315 of the second group 338a by second plane 344a is represented in Figure 3C by intersection line 345b. First plane 342a and second plane 344a are depicted as having boundaries merely for purposes of clarity of illustration in Figure 3C.
Each of the first plane 342a and the second plane 344a are non-parallel planes that intersect each other along a second axis 337a. In some embodiments, second axis 337a is parallel to first axis 335a. In some embodiments, first axis 335a and second axis 337a are collinear. In some embodiments, the first axis 335a and the second axis 337a form a single axis. In other embodiments, different spatial relationships may exist between first axis 335a and second axis 337a. In some embodiments, the electrodes 315 are arranged in a spatial distribution in which a first electrode 315q associated with transducer 306q is intersected by each of the first plane 342a and the second plane 344a when the structure 308 is in the deployed configuration. In some embodiments, first electrode 315q is not intersected by first axis 335a when structure 308 is in the deployed configuration. In some embodiments, first electrode 315q is not intersected by second axis 337a when structure 308 is in the deployed configuration. In some embodiments, the first group 336a of electrodes 315 includes first electrode 315q. In some embodiments, the second group of electrodes 338a does not include first electrode 315q. In various embodiments, the first axis 335a, the second axis 337a or each of the first axis 335a and the second axis 337a intersects at least one electrode 315 located on structure 308 (e.g., electrode 315r associated with transducer 306r in Figures 3C and 3D) that does not include first electrode 315q. In some embodiments, the first axis 335a, the second axis 337a or each of the first axis 335a and the second axis 337a does not intersect any electrode 315 located on structure 308, such as, for example, when no polar electrode (e.g., 315r in Figures 3C and 3D) is provided. In some embodiments, the first axis 335a, the second axis 337a or each of the first axis 335a and the second axis 337a does not intersect any electrode or transducer.
Figure 3D is a plan view of structure 308 in the deployed configuration of Figure 3C. The plan view of Figure 3D has an orientation such that each of first plane 342a and second plane 344a is viewed On edge' to their respective planar surfaces. (Note that in embodiments where each of the first plane 342a and the second plane 344a have no thickness, On edge' is
intended to refer to an On edge' perspective assuming that each plane had an edge of minimal thickness.) The plan view of Figure 3D has an orientation such that each of the first axis 335a and second axis 337a is viewed along the axis in this particular embodiment. Each of first plane 342a and second plane 344a are represented by a respective "heavier" line in Figure 3D. Each of first axis 335a and second axis 337a are represented by a "·" symbol in Figure 3D. It is understood that each of the depicted lines or symbols "·" used to represent any corresponding plane, intersection line or axis in this disclosure do not impart any size attributes on the corresponding plane or axis.
In various embodiments, each of the first group 336a and the second group 338a includes two or more of the electrodes 315. In some embodiments, the first group 336a, the second group 338a or each of both the first group 336a and the second group 338a includes three or more of the electrodes 315. In various embodiments, the first group 336a, the second group 338a or each of both the first group 336a and the second group 338a includes a pair of adjacent electrodes 315 located on a respective one of the first elongate member 304a and the second elongate member 304b. In some of these various embodiments, a region of space associated with a physical portion of structure 308 (e.g., an elongate member 304 portion) is located between the respective electrodes 315 of the pair of adjacent electrodes 315 included in the first group 336a, and the region of space is intersected by the first plane 342a when the structure 308 is in the deployed configuration. In some embodiments, the respective electrodes 315 of the first group 336a are spaced along a length of a portion of the first elongate member 304a, the length extending between the respective distal and proximal ends 305, 307 (not called out in Figures 3B, 3C, 3D and 3E) of the first elongate member 304a, the entirety of the length of the portion of the first elongate member 304a being intersected by the first plane 342a when structure 308 is in the deployed configuration. In some embodiments, the first plane 342a intersects every electrode 315 located on the first elongate member 304a when structure 308 is in the deployed configuration. In some embodiments, the second plane 344a intersects every electrode 315 that is located on the second elongate member 304b when structure 308 is in the deployed configuration. In some embodiments, some, but not all of the respective electrodes 315 located on the first elongate member 304a, the second elongate member 304b, or each of the first elongate member 304a and the second elongate member 304b are intersected by a corresponding one of the first plane 342a and the second plane 344a when structure 308 is in the deployed configuration.
In some embodiments, the second axis 337a is not collinear with the first axis 335a. In some embodiments, the second axis 337a and the first axis 335a do not form a single
axis. In some embodiments, the second axis 337a does not intersect the first axis 335a. Figure 3D shows another embodiment in which each electrode 315 of second group 338b (not called out in Figures 3C and 3E) of electrodes 315 located on second elongate member 304b is intersected by a second plane 344b having no thickness. Second plane 344b is viewed transversely to its planar surface in Figure 3D and is represented by a line. Although second plane 344b is depicted parallel to second plane 344a in Figure 3D, different orientations may be employed in other embodiments. First plane 342a and second plane 344b are non parallel planes that intersect one another along a second axis 337b represented by a symbol "·" in Figure 3D. For clarity, each of second plane 344b and second axis 337b is not shown in Figure 3C. In at least one particular embodiment associated with Figure 3D, each of the first plane 342a and the second plane 344b intersects a first electrode 315s associated with transducer 306s that is not intersected by the second axis 337b. In at least one particular embodiment associated with Figure 3D, first electrode 315s is not intersected by the first axis 335a. In at least one particular embodiment associated with Figure 3D, first electrode 315s is not intersected by the second axis 337b. In at least one particular embodiment associated with Figure 3D, second axis 337b intersects at least one other electrode (e.g., electrode 315t associated with transducer 306t). In at least one particular embodiment associated with Figure 3D, the intermediate portion 309 of the first elongate member 304a overlaps the intermediate portion 309 of the second elongate member 304b at each of a first location on structure 308 passed through by first axis 335a and a second location on structure 308 passed through by the second axis 337b when structure 308 is in the deployed configuration, the second and first locations being different locations.
In various embodiments, particular spatial distributions of electrodes or transducers similar to the ones employed in Figures 3A, 3B, 3C, 3D and 3E may advantageously allow for higher spatial densities of the electrodes or transducers to be employed. For example, as best seen in Figures 3C and 3D, various distributions of electrodes 315 having relatively high spatial densities are created throughout a significant portion of structure 308 including various regions proximate first axis 335a. It is noted that portions of various ones of elongate members 304 shown in Figures 3C and 3D overlap one another as the portions approach first axis 335a when structure 308 is in the deployed configuration. In various embodiments, overlapping elongate members 304 may be employed at least in part to provide to distributions of the electrodes 315 having higher spatial densities. In Figures 3C and 3D, a portion of a first elongate member 304 (e.g., elongate member 304a) is shown overlapping a portion of at least a second elongate member 304 (e.g., elongate member 304b) when structure 308 is in the deployed configuration. Figure 3E includes an enlarged view of a portion of the structure 308
depicted in Figure 3D, the portion of structure 308 including portions of at least elongate members 304a and 304b. For clarity of illustration, planes 342a, 344a, 344b and axis 337b are not shown in Figure 3E. In at least one particular embodiment associated with Figure 3E, a portion 346a (i.e., only called out in Figure 3E) of the front surface of 318a of first elongate member 304a overlaps a portion 347a (i. e., only called out in Figure 3E, partially bounded by a ghosted line 345a for clarity) of the front surface 318a of second elongate member 304b as viewed normally to the portion 346a of the front surface 318a of first elongate member 304a when structure 308 is in the deployed configuration. In this particular embodiment, the spatial density of the distribution of transducers 306 / electrodes 315 is such that at least a first electrode (e.g., electrode 315q associated with transducer 306q) is located at least on the portion 346a of the front surface 318a of first elongate member 304a. In some embodiments, the portion of 347a of the front surface 318a of second elongate member 304b faces the back surface 318b (not called out in Figure 3E) of first elongate member 304a when structure 308 is in the deployed configuration. In some embodiments, the portion of 347a of the front surface 318a of second elongate member 304b faces the back surface 318b of first elongate member 304a when structure 308 is in the delivery configuration (e.g., when the elongate members 304 are arranged front surface-toward-back surface in a stacked array (e.g., when the structure 308 is in a delivery configuration similar to that depicted in Figure 3A). In some example embodiments, the portion 347a of the front surface 318a of second elongate member 304b contacts the back surface 318b of first elongate member 304a when structure 308 is in the deployed configuration. In a similar manner, a portion 346b (i. e., only called out in Figure 3E) of the front surface of 318a of elongate member 304b overlaps a portion 347b (i. e., only called out in Figure 3E, partially bounded by a ghosted line 345b for clarity) of the front surface 318a of elongate member 304c as viewed normally to the portion 346b of the front surface 318a of elongate member 304b when structure 308 is in the deployed configuration. In this case, a first electrode (e.g., electrode 316u associated with transducer 306u) is located at least on the portion 346b of the front surface 318a of elongate member 304b.
Other spatial characteristics are associated with the distribution of transducers 306 / electrodes 315 associated with various embodiments associated with Figures 3A, 3B, 3C, 3D and 3E. For example, as best seen in Figure 3E, a first side edge 327a of the first elongate member 304a crosses a first side edge 327a of the pair of side edges of the second elongate member 304b at a first location 351a and crosses a second side edge 327b of the pair of side edges of the second elongate member 304b at a second location 352a when structure 308 is in the deployed configuration. In various embodiments associated with Figure 3E, various
electrodes 315 are located at least on a portion 348a of the second elongate member 304b, the portion 348a of the second elongate member 304b located between a first transverse line 349a and a second transverse line 349b (e.g., each depicted by a ghosted line in Figure 3E) when the structure 308 is in the deployed configuration. In various embodiments associated with Figure 3E, the first transverse line 349a extends across a first width 353a of the second elongate member 304b at the first location 351 a, and the second transverse line 349b extends across a second width 353b of the second elongate member 304b at the second location 352a. In at least one particular embodiment associated with Figure 3E, the first width 353a and the second width 353b are the widths of the front surfaces 318a of the second elongate member 304b. In at least one particular embodiment associated with Figure 3E, a magnitude of first width 353a is substantially the same as a magnitude of the second width 353b. In some embodiments, the magnitude of the first width 353a is different than the magnitude of the second width 353b. In some embodiments, the first transverse line 349a is perpendicular to one or both of the side edges 327a, 327b of the second elongate member 304b. Similarly, in some embodiments, the second transverse line 349b is perpendicular to one or both of the side edges 327a, 327b of the second elongate member 304b. In some embodiments, the magnitude of the first width 353a is a minimum with respect to all other respective magnitudes of possible widths between side edges 327a, 327b of the second elongate member 304b originating at location 351 a. Similarly, in some embodiments, the magnitude of the second width 353b is a minimum with respect to all other respective magnitudes of possible widths between side edges 327a, 327b of the second elongate member 304b originating at location 352a.
In some example embodiments, one or more of the electrodes 315 are wholly located on the portion 348a of the second elongate member 304b when the structure 308 is in the deployed configuration. For example, electrode 315u is wholly located on the portion 348a (which is rectangular in some embodiments such as Figure 3E) of the second elongate member 304b when the structure 308 is in the deployed configuration. In some example embodiments, at least a portion of an electrode 315 of the plurality of electrodes 315 is located on the portion 348a of the second elongate member 304b when structure 308 is in the deployed configuration. As shown, for example, in Figure 3E, electrode 315v is located at least on portion 348a in the deployed configuration. In various other embodiments, two or more of the electrodes 315 may be located on the portion 348a of the second elongate member 304b.
It may be noted that distances between adjacent ones of the elongate members 304 shown in Figures 3C, 3D and 3E vary as elongate members 304 extend towards first axis 335a when structure 308 is in the deployed configuration. In some cases, the varying distances
between adjacent elongate members 304 in the deployed configuration may give rise to shape, size or dimensional constraints for the electrodes 315 located on the elongate members 304. In some cases, the overlapping portions of various ones the elongate members 304 in the deployed configuration may give rise to shape, size or dimensional constraints for the electrodes 315 located on the portions of the various ones of the elongate members 304. For example, it may be desirable to reduce a surface area of an electrode adjacent an overlap region on an overlapped elongate member to accommodate the reduced-exposed-surface area of the overlapped elongate member in the region adjacent the overlap region (e.g. , electrode 315u in Figure 3E).
In various embodiments, the respective shape of various electrically conductive surfaces (e.g., energy transmission surfaces 319) of various ones of the electrodes 315 vary among the electrodes 315. In various embodiments, the respective shape of various electrically conductive surfaces (e.g., energy transmission surfaces 319) of various ones of the electrodes 315 vary among the electrodes 315 in accordance with their proximity to first axis 335a. In various embodiments, one or more dimensions or sizes of various electrically conductive surfaces (e.g., energy transmission surfaces 319) of various ones of the electrodes 315 vary among the electrodes 315. In various embodiments, one or more dimensional sizes of various electrically conductive surfaces (e.g., energy transmission surfaces 319) of various ones of the electrodes 315 vary in accordance with their proximity to first axis 335a. The shape or size variances associated with various ones of the electrodes 315 may be motivated for various reasons. For example, in various embodiments, the shapes or sizes of various ones of the electrodes 315 may be controlled in response to various ones of the aforementioned size or dimensional constraints.
Referring to Figure 3E, it is noted that each of various ones of the electrodes 315 (e.g., electrodes 315u and 315v) located at least on second elongate member 304b have various electrode edges (e.g. , 315-1 in Figure 3C or 415-1 in Figure 4) that form a periphery of an electrically conductive surface associated with each of the various electrodes 315 (e.g., an energy transmission surface 319). In at least one particular embodiment associated with Figure 3E, a first electrode edge 333a associated with electrode 315u is arranged to follow a portion of the first side edge 327a of the first elongate member 304a between the first location 351a and the second location 352a when the structure 308 is an expanded or deployed configuration. In some embodiments, the first electrode edge 333a of electrode 315u is arranged to be parallel to the portion of the first side edge 327a of the first elongate member 304 between the first location 351 and the second location 352 when the structure 308 is in an expanded or deployed configuration. In this particular embodiment, a second electrode edge 333b forming part of the
periphery of electrically conductive surface associated with electrode 315u is positioned opposite across the electrically conductive surface from the first electrode edge 333a. In this particular embodiment, the second electrode edge 333b is arranged to follow a portion of one of the side edges 327 of the second elongate member 304b (e.g., side edge 327a of second elongate member 304b). In this particular embodiment, the second electrode edge 333b is substantially parallel to the side edge 327a of second elongate member 304b.
Figures 3F and 3G respectively show perspective and plan views of a plurality of transducers and electrodes located on a structure 313 (e.g., in a deployed configuration) according to various embodiments. In various embodiments, structure 313 is selectively moveable from a delivery configuration to a deployed configuration in a manner similar to structure 308. It is noted that structure 313 is depicted in Figures 3F and 3G in a similar fashion to depictions of structure 308 in Figures 3C and 3D. In some embodiments, distributions of transducers or electrodes similar to those employed by structure 313 are employed by the structure 308 of Figures 3A, 3B, 3C, 3D and 3E. For the convenience of discussion, various elements associated with structure 313 will be identified by the respective part numbers of the corresponding elements associated with structure 308. For example, in reference to Figures 3F and 3G and other associated Figures, transducers are referred to as transducers 306, electrodes are referred to as electrodes 315, energy transmission surfaces are referred to as energy transmission surfaces 319, elongate members are referred to as elongate members 304, et cetera. It is noted that these elements disclosed in Figures 3F and 3G and other associated Figures are not limited to the embodiments of corresponding elements disclosed in Figures 3A, 3B, 3C, 3D and 3E. In some embodiments, structure 313 may assume a delivery configuration similar to that shown for structure 308 in Figure 3A.
It may be noted that although the distributions of transducers 306 / electrodes 315 associated with structure 313 have differences from the distribution of transducers 306 / electrodes 315 associated with structure 308, there are also similarities. The respective intermediate portions 309 of various ones of the elongate members 304 (five called out in each of Figures 3F and 3G, four of the five called out as 304d, 304e, 304f and 304g) are angularly spaced with respect to one another about a first axis 335b when structure 313 is in the deployed configuration in a manner similar to that previously described with respect to structure 308. Various ones of the elongate members 304 cross one another at a location on the structure 313 passed through by first axis 335b when the structure 313 is in the deployed configuration. In at least one particular embodiment associated with Figures 3F, 3G, the intermediate portion 309 of a first elongate member (e.g., elongate member 304d) overlaps the intermediate portion 309 of a
second elongate member (e.g., elongate member 304e) at a location on structure 313 passed through by first axis 335b when structure 313 is in the deployed configuration. In at least one particular embodiment associated with Figures 3F, 3G, the intermediate portion 309 of first elongate member 304d is adjacent the intermediate portion 309 of the second elongate member 304e when structure 313 is in the deployed configuration. The transducers 306 (nine called out in each of Figures 3F and 3G, eight of the nine called as transducers 306w, 306x, 306y, 306z, 306aa, 306bb, 306cc, and 306dd) and electrodes 315 (nine called out in each of Figures 3F and 3G, eight of the nine called out as electrodes 315w, 315x, 315y, 315z, 315aa, 315bb, 315cc and 315dd) are radially spaced about first axis 335b when structure 313 is in the deployed configuration in a manner similar to the embodiments associated with structure 308. The plurality of electrodes 315 located on structure 313 includes a first group 336b (not called out in Figures 3H, 31) of the electrodes 315 located on first elongate member 304d and a second group 338c (not called out in Figures 3H, 31) of the electrodes 315 located on second elongate member 304e. It is understood that although electrodes are herein described, other forms of transducers or transducer elements may be employed in other embodiments. The electrodes 315 of the first group 336b are arranged such that each electrode 315 of the first group 336b is intersected by a first plane 342b having no thickness. The electrodes 315 of the second group 338c are arranged such that each electrode 315 of the second group 338c is intersected by a second plane 344c having no thickness. For clarity, the intersection of each electrode 315 of the first group 336b by first plane 342b is represented in Figure 3F by intersection line 345c. For clarity, the intersection of each electrode 315 of the second group 338c by second plane 344c is represented in Figure 3F by intersection line 345d. First plane 342b and second plane 344c are depicted as having boundaries for clarity of illustration in Figure 3F.
Each of the first plane 342b and the second plane 344c are non-parallel planes that intersect each other along a second axis 337c (represented by a symbol "·" in Figure 3G). In some embodiments, second axis 337c is parallel to first axis 335b. In some embodiments, first axis 335b and second axis 337c are collinear. In some embodiments, the first axis 335b and the second axis 337c form a single axis. In some embodiments, the electrodes 315 are arranged in a spatial distribution in which a first electrode 315 (e.g., electrode 315w associated with transducer 306w) is intersected by each of the first plane 342b and the second plane 344c when the structure 313 is in the deployed configuration. In at least one particular embodiment, first electrode 315w is not intersected by first axis 335b when structure 313 is in the deployed configuration. In at least one particular embodiment, first electrode 315w is not intersected by second axis 337c when structure 313 is in the deployed configuration. In at least one particular
embodiment, the first group 336b of electrodes 315 includes first electrode 315w. In at least one particular embodiment, the second group of electrodes 338c does not include first electrode 315w. In various embodiments, the first axis 335a, the second axis 337c or each of the first axis 335 and the second axis 337c intersects at least one other electrode 315 located on structure 313 (e.g., electrode 315x associated with transducer 306x in Figures 3F, 3G and 31). In some embodiments, the first axis 335b, the second axis 337c or each of the first axis 335b and the second axis 337c do not intersect any electrode 315 located on structure 313.
In some embodiments, the second axis 337c is not collinear with the first axis 335b. In some embodiments, the second axis 337c and the first axis 335b do not form a single axis. In some embodiments, the second axis 337c does not intersect the first axis 335b. Figure 3G shows another embodiment in which each electrode 315 of second group 338d (not called out in Figure 3F, 3H and 31) of electrodes 315 located on a second elongate member 304f is intersected by a second plane 344d having no thickness when structure 313 is in a deployed configuration. Second plane 344d is viewed transversely to its planar surface in Figure 3G and is represented by a line. For clarity, second plane 344d is not shown in Figure 3F. First plane 342b and second plane 344d are non parallel planes that intersect one another along a second axis 337d represented by a symbol "·" in Figure 3G. In at least one particular embodiment, each of the first plane 342b and the second plane 344d intersects a first electrode 315y associated with transducer 306y when structure 313 is in a deployed configuration. In at least one particular embodiment, first electrode 315y is not intersected by the first axis 335b when structure 313 is in a deployed configuration. In at least one particular embodiment, first electrode 315y is not intersected by the second axis 337d when structure 313 is in a deployed configuration. In at least one particular embodiment, second axis 337d intersects at least one other electrode (e.g., electrode 315z associated with transducer 306z) when structure 313 is in a deployed configuration.
Embodiments associated with Figures 3F and 3G have spatial distributions of the transducers 306 / electrodes 315 that have relatively high spatial densities in various regions of structure 313 including a plurality of regions proximate first axis 335b. In various
embodiments, a spatial distribution of the transducers 306 / electrodes 315 in various regions proximate first axis 335b have higher spatial densities than similar distributions associated with various embodiments of Figures 3A, 3B, 3C, 3D and 3E. Embodiments associated with Figures 3F and 3G may provide for electrodes 315 having electrically conductive surfaces (e.g., energy transmission surfaces 319, three called out in each of Figures 3F and 3G, two of the three called out as 319c and 319d) of greater size or dimension than some of the electrodes 315 associated
with various embodiments of Figures 3A, 3B, 3C, 3D and 3E. In particular, larger electrodes 315 may be provided in regions proximate first axis 335b in at least some of the embodiments associated with Figures 3F and 3G. The use of larger electrodes (e.g., larger electrically conductive surfaces such as energy transmission surfaces 319c and 319d) may be motivated for various reasons. For example, in some tissue ablation applications, tissue ablation depths may be dependent on the size of the electrodes 315 employed for the ablation, with a use of larger electrodes 315 typically reaching a particular ablation depth in a shorter activation time than a use of relatively smaller electrodes 315. In some tissue ablation applications, deeper tissue ablation depths may be associated with larger electrodes.
Figure 3H is shows perspective views of each of first elongate member 304d and second elongate member 304e in a "flattened" configuration in which the curved form of these elongate members 304 in Figures 3F and 3G is flattened out. It is noted that in embodiments where the elongate members 304 in Figures 3F and 3G include a twisted portion similar to the twisted portions of various ones of the elongate members 304 associated with Figures 3A, 3B, 3C, 3D and 3E, the twisted portions are shown untwisted in the flattened configuration of Figure 3H. The flattened configuration is presented for clarity of illustration and it is understood that in the deployed configuration, Figures 3F and 3G are better representative of the forms of various ones of the elongate members at least in the deployed configuration. In a manner similar to the elongate members 304 of structure 308, the intermediate portion 309 of each of the elongate members 304d, 304e includes a front surface 318a and back surface 318b opposite across a thickness 318c of the elongate member. In some embodiments, at least some of the transducers 306 / electrodes 315 are located on the front surfaces 318a. Each intermediate portion 309 includes a respective pair of side edges 327a, 327b. In various embodiments, the side edges 327a, 327b of each intermediate portion 309 are respective side edges of the front surface 318a, the back surface 318b, or both the front surface 318a and the back surface 318b of the intermediate portion 309. Each of the pair of side edges 327a, 327b extends between the proximal end 307 and the distal end 305 of the elongate member 304.
In some embodiments associated with Figures 3F and 3G, various ones of elongate members overlap one another when structure 313 is in the deployed configuration. In various embodiments, overlapping elongate members 304 may be employed at least in part to provide to distributions of the electrodes 315 having higher spatial densities. Figure 31 includes an enlarged view of a portion of the structure 313 depicted in Figure 3G, the portion of structure 313 including portions of at least elongate members 304d and 304e. For clarity of illustration, planes 342b, 344c, 344d and axis 337d are not shown in Figure 31.
In at least one particular embodiment, various portions of the front surface 318a of the first elongate member 304d overlap various portions of the front surface 318a of each of several ones of the plurality of elongate members 304 when structure 313 is in the deployed configuration. In at least one particular embodiment, various portions of the front surface 318a of the first elongate member 304d overlap various portions of the front surface 318a of every other one of the plurality of elongate members 304 when structure 313 is in the deployed configuration. In at least one particular embodiment associated with Figure 31, a portion 346c (i. e., only called out in Figure 31) of the front surface of 318a of a first elongate member 304 (e.g., elongate member 304d) overlaps a portion 347c (i.e., only called out in Figure 31, partially bounded by a ghosted line 345c) of the front surface 318a of at least a second elongate member (e.g., elongate member 304e) as viewed normally to the portion 346a of the front surface 318a of first elongate member 304a when structure 313 is in the deployed configuration. In at least one particular embodiment, the spatial density of the distribution of transducers 306 / electrodes 315 is such that at least a first electrode (e.g., first electrode 315w associated with transducer 306w) is located at least on the portion 346c of the front surface 318a of first elongate member 304d. In at least one particular embodiment, the portion of 347c of the front surface 318a of second elongate member 304e faces the back surface 318b (not called out in Figure 31) of first elongate member 304d when structure 313 is in the deployed configuration. In some embodiments, the portion of 347c of the front surface 318a of second elongate member 304e faces the back surface 318b of first elongate member 304d when structure 313 is in the delivery configuration (e.g., when the elongate members 304 are arranged front surface-toward-back surface in a stacked array when the structure 313 is in a delivery configuration similar to that depicted in Figure 3A). In some example embodiments, the portion of 347c of the front surface 318a of second elongate member 304e contacts the back surface 318b of first elongate member 304d when structure 313 is in the deployed configuration.
In Figures 3F, 3G and 31, the first elongate member 304d is positioned such that first edge 327a of the first elongate member 304d crosses at least a second edge of the second elongate member 304e (e.g., second edge 327b of second elongate member 304e) when structure 313 is in the deployed configuration. In some of the embodiments associated with Figure 3F, 3G, 3H and 31 a portion of the first edge 327a of the first elongate member 304d forms a recessed portion 328a of first elongate member 304d that exposes at least a portion of a second transducer 306aa (e.g., second electrode 315aa in at least one particular embodiment) located on second elongate member 304e. All recessed portions such as recessed portion 328a described herein are collectively referred to as recessed portions 328. In at least some of the embodiments
associated with Figures 3F, 3G, 3H and 31, the exposed portion of second transducer 306aa (e.g., electrode 315aa) is located at least on portion of a surface (e.g., front surface 318a) of the second elongate member 304e as viewed normally to the portion of the surface of the second elongate member 304e when structure 313 is in the deployed configuration. In at least some of the embodiments associated with Figures 3F, 3G, 3H and 31, recessed portion 328a of first elongate member 304d exposes at least a portion of second electrode 315aa as viewed normally to a surface of the exposed portion of second electrode 315aa. In at least some of the example embodiments associated with Figures 3F, 3G, 3H and 31, the exposed portion of second transducer 306aa (e.g., electrode 315aa) is located on the second elongate member 304e as viewed towards the second transducer 306aa along a direction parallel to a direction that the first axis 335b extends along when structure 313 is in the deployed configuration. In some embodiments, the second group 338c includes second transducer 306aa (e.g., electrode 315aa). As best shown in Figures 3G and 31, in some embodiments, the second transducer 306aa (e.g., electrode 315aa) is adjacent first transducer 306w (e.g., electrode 315w) when structure 313 is in the deployed configuration. In various embodiments associated with Figures 3F, 3G, 3H and 31, at least some of the plurality of transducers 306 /electrodes 315 are arranged in a plurality of concentric ringed arrangements 329 (four called out in Figure 3G (one of which is shown by a ghosted line), two of the four called out as 329a, 329b) about the first axis 335b when structure 313 is in the deployed configuration, a first one of the ringed arrangements 329 (e.g. , ringed arrangement 329a) having a fewer number of the transducers 306 (e.g., electrodes 315) than a second one of the ringed arrangements (e.g. , ringed arrangement 329b). In some of these various example embodiments, the first ringed arrangement includes first transducer 306w (e.g., electrode 315w). In some of these various embodiments, the first ringed arrangement 329a does not include any of the transducers 306 (e.g., electrodes 315) located on the second elongate member 304e. In some of these example embodiments, the second ringed arrangement 329b includes the second transducer 304aa. In some of these various embodiments, the first ringed arrangement 329a is adjacent the second ringed arrangement 329b.
In various embodiments, first elongate member 304d includes a second recessed portion 328b (called out in Figures 3F, 3G and 3H) arranged to expose a portion of at least one transducer (e.g., electrode 315bb associated with transducer 306bb) located on second elongate member 304e when structure 313 is in the deployed configuration. In various embodiments, second elongate member 304e includes several recessed portions (e.g., recessed portions 328c and 328d called out in Figures 3H, 3J. In at least one particular embodiment, each of the recessed portions 328c and 328d has different dimensions or sizes than each of recessed portions
328a and 328b. Differences in the dimensions or sizes of various ones of the recessed portions 328 (e.g. , any of recessed portions 328a, 328b, 328c, 328d and other described recessed portions) may be motivated by various reasons including the location of their corresponding elongate member 304 in structure 313 or a spatial relationship between various ones of the transducers 306 /electrodes 315 in the deployed configuration. In some embodiments, the differences in the sizes or dimensions of various ones of the recessed portions 328 may be employed to create distribution of transducers 306 / electrodes 315 having higher spatial densities. In various embodiments, each recessed portion 328c, 328d is arranged to expose a portion of at least one transducer 306 (e.g., electrode 315cc associated with transducer 306cc and electrode 315dd associated with transducer 306dd) located on elongate member 304g when structure 313 is in the deployed configuration. This is best shown in Figure 3 J which shows a plan view of structure 313 in the deployed configuration similar to that shown in Figure 3G with the exception that elongate member 304d is not shown. It is understood that elongate member 304d is not shown in Figure 3J only to better show elongate member 304e and its associated recessed portions 328c and 328d. For clarity of illustration, planes 342b, 344c, 344d and axes 335b, 337c, 337d are not shown in Figure 3J.
In various embodiments associated with Figure 3J, a first side edge 327a of a first elongate member (e.g., elongate member 304e) crosses a first side edge 327a of the pair of side edges of a second elongate member (e.g., elongate member 304g) at a first location 351b and crosses a second side edge 327b of the pair of side edges of the second elongate member 304g at a second location 352b when structure 313 is in the deployed configuration. In various embodiments associated with Figure 3 J, various electrodes 315 are located at least on a portion 348b of the second elongate member 304g, the portion 348b of the second elongate member 304g located between a first transverse line 349c and a second transverse line 349d (e.g., each depicted by a ghosted line in Figure 3 J) when the structure 313 is in the deployed configuration. In various embodiments associated with Figure 3J, the first transverse line 349c extends across a first width 353c of the second elongate member 304g at the first location 351b and the second transverse line 349d extends across a second width 353d of the second elongate member 304g at the second location 352b. In at least one particular embodiment associated with Figure 3J, the first width 353c and the second width 353d are the widths of the front surfaces 318a of the second elongate member 304g. In at least one particular embodiment associated with Figure 3J, a magnitude of first width 353c is substantially the same as a magnitude of the second width 353d. In some embodiments, a magnitude of the first width 353c is different than a magnitude of the second width 353d. In at least one particular embodiment associated with Figure 3J, each
of electrodes 315cc associated with transducer 306cc and electrode 315dd associated with transducer 306dd is wholly located on the portion 348b of the second elongate member 304g when the structure 313 is in the deployed configuration. In at least one particular embodiment associated with Figure 3J, electrode 315ee associated with transducer 306ee is located at least on portion 348b in the deployed configuration. Similar arrangements exist between other sets of the elongate members 304 of structure 313 in the deployed configuration. For example, referring to Figure 31, a first elongate member (e.g., elongate member 304d) is positioned such that its first edge 327a crosses a first side edge 327a of a second elongate member (elongate member 304e) at a first location 351c and crosses a second side edge 327b of the second elongate member 304e at a second location 352c when the structure 313 is in the deployed configuration. Electrode 306aa associated with transducer 306aa is wholly located on a portion 348c of the second elongate member 304e, the portion 348c located between a first transverse line 349e and a second transverse line 349f when the structure 313 is in the deployed configuration. The first transverse line 349e extends across a first width 353e of the second elongate member 304e at the first location 35 lc, and the second transverse line 349f extends across a second width 353f of the second elongate member 304e at the second location 352c. In this particular embodiment, the first width 353e is smaller than the second width 353f.
In a manner similar to embodiments associated with Figures 3A, 3B, 3C, 3D and 3E, electrically conductive surfaces (e.g., energy transmission surfaces 319) of various ones of the electrodes 315 employed in various embodiments associated with Figures 3F, 3G, 3H, 31, and 3J may have different sizes or shapes. For example, referring to Figure 3J, it is noted that each of various one of the electrodes 315 (e.g., electrodes 315cc, 315dd and 315ee) located on at least on elongate member 304g have different shapes and sizes. In at least one particular embodiment associated with Figure 3J, a periphery of an electrically conductive surface (e.g., an energy transmission surface 319) of various ones of the electrodes 315 is defined by various electrode edges. For example, electrode 315dd includes a first electrode edge 333c and a second electrode edge 333d opposite across an electrically conductive surface of electrode 315dd from the first electrode edge 333c. In at least one particular embodiment, the first electrode edge 333c associated with electrode 315dd is arranged to follow a portion of the first side edge 327a of the overlapping elongate member 304e between the first location 351b and the second location 352b when the structure 313 is in an expanded or deployed configuration. In at least one particular embodiment, the first electrode edge 333c of electrode 315dd is arranged to be parallel to the portion of the first side edge 327a of the overlapping elongate member 304e between the first location 351b and the second location 352b when the structure 313 is in an expanded or
deployed configuration. In at least one particular embodiment, the first electrode edge 333c of electrode 315dd is arranged to follow a portion of the first side edge 327a that defines or forms part of, the recessed portion 328c of overlapping elongate member 304e in the expanded or deployed configuration. In at least one particular embodiment, the second electrode edge 333d associated with electrode 315dd is arranged to follow a portion of one of the side edges 327 of elongate member 304g (e.g., side edge 327a of second elongate member 304g). In at least one particular embodiment, the second electrode edge 333d associated with electrode 315dd is arranged to follow a portion of one of the side edges 327 of elongate member 304g (e.g., side edge 327a of second elongate member 304g) that defines, or forms part of, a recessed portion 328j of the elongate member 304g. In at least one particular embodiment, a first part of a first electrode edge 333e associated with electrode 315ee located on elongate member 304g is arranged to follow a portion of the first side edge 327a that defines, or forms part of, the recessed portion 328c of overlapping elongate member 304e when structure 313 is in the deployed configuration, and a second part of the first electrode edge 333e of electrode 315ee is arranged to follow a portion of the first side edge 327a that does not define or form part of the recessed portion 328c of overlapping elongate member 304e when structure 313 is in an expanded or deployed configuration. In at least one particular embodiment, a first part of a second electrode edge 333f associated with electrode 315ee is arranged to follow a portion of the first side edge 327a that defines, or forms part of, the recessed portion 328j of the elongate member 304g, and a second part of the second electrode edge 333f is arranged to follow a portion of the first side edge 327a of elongate member 304j that does not define, or form part of, the recessed portion 328j .
In at least one particular embodiment associated with Figures 3F, 3G, 3H, and 31, the edge 327a of the first elongate member 304d is interrupted by a notch 330a. Similarly, in some embodiments, the edge 327a of the first elongate member 304d is interrupted by recessed portion 328a of the first elongate member 304d. In some embodiments, the recessed portion 328a forms at least a portion of the notch 330a. In this particular illustrated embodiment, notch 330a is located in the intermediate portion 309 of the first elongate member 304d and extends towards the second edge 327b. In a similar fashion, the recessed portions 328b, 328c and 328d may form a portion of a respective one of notches 330b, 330c and 330d (called out in Figure 3H) in various embodiments. In various embodiments associated with Figures 3F, 3G, 3H, 31 and 3J, various ones of the recessed portions 328 may be advantageously employed to create, at least in part, a spatial distribution of the transducers 315 having a relatively high spatial density. In various embodiments associated with Figures 3F, 3G, 3H, 31 and 3J, various ones of recessed
portions 328 may be advantageously employed to address, at least in part, transducer size or shape constraints associated with structure 313 (e.g., overlapping regions of elongate members 304 or varying distances between various elongate members 304). In various embodiments associated with Figures 3F, 3G, 3H, 31 and 3J, various ones of recessed portions 328 may allow, at least in part, for the use of electrodes 315 having relatively large electrically conductive surfaces (e.g., energy transmission surfaces 319). Other benefits may accompany the use of recessed portions such as recessed portions 328. For example, in some embodiments, recessed portions similar to various ones of recess portions 328 may be employed to increase fluid flow (e.g., blood flow) in a particular region of structure 313 (e.g., a region where elongate members 304 overlap one another) that may hinder or otherwise obstruct a flow of fluid (e.g., blood flow).
In other embodiments, various ones of the recessed portions 328 may take a form other than a notch (e.g., notch 330a). For example, Figure 3K includes a perspective view of two elongate members 304h and 304i in a flattened configuration similar to that shown by elongate members 304d and 304e in Figure 3H. Elongate members 304h and 304i are similar to elongate members 304d and 304e in various embodiments, form part of structure of a transducer-based device system (not shown) similar to structures 308, 313. In some of these various embodiments, the structure may be configurable between a delivery configuration and a deployed configuration similar to that previously described in this detailed description. In some of these various embodiments, elongate member 304h overlaps elongate member 304i when the structure is the deployed configuration in a manner similar to elongate members 304d and 304e. For convenience of discussion, various elements of each of elongate members 304h and 304i are identified by the same part numbers employed to identify similar elements in other previously described elongate members. In some embodiments, each of elongate members 304h and 304i includes an intermediate portion 309 that includes a front surface 318a and back surface 318b opposite across a thickness 318c of the elongate member. In some embodiments, at least some of the transducers 306 / electrodes 315 are located on the front surfaces 318a. Each intermediate portion 309 includes a respective pair of side edges 327a, 327b extending between proximal and distal ends 307, 305 of the elongate member 304. In a manner similar to that shown in Figures 3F, 3G, and 31 the first elongate member 304h may be positioned such that first edge 327a of the first elongate member 304h crosses a second edge 327b of the second elongate member 304i when the associated structure is in the deployed configuration. In a manner similar to elongate members 304d, 304e, each of the elongate members 304h, 304i includes a set of recessed portions 328 (e.g., associated ones of recessed portions 328e, 328f, 328g, 328h). In some embodiments, each of the elongate members 304h, 304i includes a jogged portion (e.g., a
respective one of jogged portions 331a, 331b), each jogged portion undergoing at least one change in direction as the jogged portion extends between the proximal and distal ends 307, 305 of the respective elongate member. In various embodiments, various ones of the recessed portions 328e, 328f, 328g and 328h may form a part of one of the jogged portions 331 a, 331b. In various embodiments, various ones of the recessed portions 328e, 328f, 328g and 328h may be located on respective ones of the elongate members 304h and 304i to expose a portion of at least one transducer 306 / electrode 315 located on another elongate member 304 (e.g., when an associated structure that includes the elongate members 304 is in a deployed configuration). In other example embodiments, a surface of a particular one of the elongate members may be interrupted by a channel (e.g., trough, groove, aperture), the channel located to expose a portion of at least one transducer 306 / electrode 315 located on another elongate member 304 especially when an associated structure that includes the elongate members 304 is in a deployed configuration.
While some of the embodiments disclosed above are described with examples of cardiac mapping, the same or similar embodiments may be used for mapping other bodily organs, for example gastric mapping, bladder mapping, arterial mapping and mapping of any lumen or cavity into which the devices of the present invention may be introduced.
While some of the embodiments disclosed above are described with examples of cardiac ablation, the same or similar embodiments may be used for ablating other bodily organs or any lumen or cavity into which the devices of the present invention may be introduced.
Subsets or combinations of various embodiments described above can provide further embodiments.
These and other changes can be made to the invention in light of the above- detailed description. In general, in the following claims, the terms used should not be construed to limit the invention to the specific embodiments disclosed in the specification and the claims, but should be construed to include other transducer-based device systems including all medical treatment device systems and medical diagnostic device systems in accordance with the claims. Accordingly, the invention is not limited by the disclosure, but instead its scope is to be determined entirely by the following claims.
Claims
1. A medical device system comprising:
a structure comprising a plurality of elongate members, each of the elongate members comprising a proximal end, a distal end, and an intermediate portion between the proximal and distal ends; and
a plurality of electrodes located on the structure, the plurality of electrodes positionable in a bodily cavity, a first group of the electrodes located on a first elongate member of the plurality of elongate members and a second group of the electrodes located on a second elongate member of the plurality of elongate members,
wherein the structure is selectively moveable between:
a delivery configuration in which the structure is sized to be percutaneously delivered to the bodily cavity, and
a deployed configuration in which the structure is expanded to have a size too large to be percutaneously delivered to the bodily cavity, wherein the intermediate portions of the elongate members are angularly arranged with respect to one another about a first axis when the structure is in the deployed configuration, each electrode of the first group of the electrodes intersected by a first plane having no thickness and each electrode of the second group of the electrodes intersected by a second plane having no thickness when the structure is in the deployed configuration, wherein the first and the second planes are non-parallel planes that intersect each other along a second axis, and wherein at least a first electrode of the plurality of electrodes is intersected by each of the first plane and the second plane when the structure is in the deployed configuration, the first electrode not intersected by each of the first axis and the second axis when the structure is in the deployed configuration.
2. The medical device system of Claim 1 wherein the second axis is parallel to the first axis.
3. The medical device system of Claim 2 wherein the first axis and the second axis are collinear.
4. The medical device system of Claim 3 wherein the first axis intersects at least one other electrode of the plurality of electrodes that does not include the first electrode when the structure is in the deployed configuration.
5. The medical device system of Claim 2 wherein the second axis intersects at least one other electrode of the plurality of electrodes that does not include the first electrode when the structure is in the deployed configuration.
6. The medical device system of Claim 1, 2, 3, 4, or 5 wherein the intermediate portion of the first elongate member overlaps the intermediate portion of the second elongate member at a location on the structure passed through by the first axis when the structure is in the deployed configuration.
7. The medical device system of Claim 1, 2, 3, 4, or 5 wherein the intermediate portion of the first elongate member overlaps the intermediate portion of the second elongate member at each of a first location on the structure passed through by the first axis and a second location on the structure passed through by the second axis when the structure is in the deployed configuration.
8. The medical device system of Claim 1, 2, 3, 4, or 5 wherein the respective electrodes of the first group of the electrodes are spaced along a length of a portion of the first elongate member, the length of the portion of the first elongate member extending along the first elongate member between the proximal and the distal ends of the first elongate member, the entirety of the length of the portion of the elongate member intersected by the first plane when the structure is in the deployed configuration.
9. The medical device system of Claim 1, 2, 3, 4, or 5 wherein the first group of the electrodes includes the first electrode and the second group of the electrodes does not include the first electrode.
10. The medical device system of Claim 1, 2, 3, 4, or 5 wherein at least some of the plurality of electrodes are arranged in a plurality of concentric ringed arrangements when the structure is in the deployed configuration, a first one of the plurality of concentric ringed arrangements having a fewer number of the electrodes than a second one of the plurality of
concentric ringed arrangements, the first one of the plurality of concentric ringed arrangements comprising the first electrode.
11. The medical device system of Claim 1, 2, 3, 4, or 5 wherein the first elongate member includes a surface interrupted by a channel, the channel located to expose at least a portion of at least a second electrode located on the second elongate member as viewed towards the second electrode along a direction parallel to a direction that the first axis extends along when the structure is in the deployed configuration.
12. The medical device system of Claim 1, 2, 3, 4, or 5 wherein the first elongate member includes a jogged portion, wherein the jogged portion undergoes at least one change in direction as the jogged portion extends between the proximal and the distal ends of the first elongate member, and the jogged portion is located to expose at least a portion of at least a second electrode located on the second elongate member as viewed towards the second electrode along a direction parallel to a direction that the first axis extends along when the structure is in the deployed configuration.
13. The medical device system of Claim 1, 2, 3, 4, or 5 wherein: the intermediate portion of each elongate member of the plurality of elongate members comprises a front surface and a back surface opposite across a thickness of the elongate member from the front surface, each intermediate portion further comprising a respective pair of side edges of the front surface, the back surface, or both the front surface and the back surface of the intermediate portion, the side edges of each pair of side edges opposite to one another, each of the side edges of each pair of side edges extending between the proximal end and the distal end of the respective elongate member, and
the first elongate member is positioned such that a first edge of the pair of side edges of the first elongate member crosses a second side edge of the pair of side edges of the second elongate member of the plurality of elongate members when the structure is in the deployed configuration, a portion of the first edge forming a recessed portion of the first elongate member that exposes at least a portion of a second electrode located on a portion of the front surface of the second elongate member as viewed normally to the portion of the front surface of the second elongate member when the structure is in the deployed configuration.
14. The medical device system of Claim 13 wherein the second group of the electrodes includes the second electrode.
15. The medical device system of Claim 13 wherein the second electrode is adjacent the first electrode when the structure is in the deployed configuration.
16. A medical device system comprising:
a plurality of transducers positionable in a bodily cavity and a structure on which the transducers are located, the structure comprising a plurality of elongate members, each of the elongate members comprising a proximal end, a distal end, an intermediate portion positioned between the proximal end and the distal end, and a thickness, each intermediate portion comprising a front surface and a back surface opposite across the thickness of the elongate member from the front surface, and each intermediate portion further comprising a respective pair of side edges of the front surface, the back surface, or both the front surface and the back surface, the side edges of each pair of side edges opposite to one another, the side edges of each pair of side edges extending between the proximal end and the distal end of the respective elongate member, wherein the structure is selectively moveable between:
a delivery configuration in which the structure is sized for percutaneous delivery to a bodily cavity, and
a deployed configuration in which the structure is sized too large for percutaneous delivery to the bodily cavity, at least a first elongate member of the plurality of elongate members positioned such that a first edge of the pair of side edges of the first elongate member crosses a second side edge of the pair of side edges of a second elongate member of the plurality of elongate members when the structure is in the deployed configuration, a portion of the first edge forming a recessed portion of the first elongate member that exposes at least a portion of a transducer located on a portion of the front surface of the second elongate member as viewed normally to the portion of the front surface of the second elongate member when the structure is in the deployed configuration.
17. The medical device system of Claim 16 wherein the recessed portion of the first elongate member forms at least a portion of a notch in the intermediate portion of the first elongate member, the notch extending towards a second edge of the pair of side edges of the first elongate member.
18. The medical device system of Claim 16 wherein the first elongate member includes a jogged portion, the jogged portion undergoing at least one change in direction as the jogged portion extends between the proximal and the distal ends of the first elongate member, the recessed portion of the first elongate member forming at least part of the jogged portion.
19. The medical device system of Claim 16, 17, or 18 wherein the intermediate portions of the elongate members are angularly arranged with respect to one another about an axis when the structure is in the deployed configuration.
20. The medical device system of Claim 16, 17, or 18 wherein at least some of the plurality of transducers are radially spaced about an axis when the structure is in the deployed configuration.
21. The medical device system of Claim 16, 17, or 18 wherein at least some of the plurality of transducers are arranged in a plurality of concentric ringed arrangements when the structure is in the deployed configuration, a first one of the plurality of concentric ringed arrangements having a fewer number of the transducers than a second one of the plurality of concentric ringed arrangements.
22. The medical device system of Claim 21 wherein the first one of the plurality of concentric ringed arrangements does not include any of the plurality of transducers located on the second elongate member.
23. The medical device system of Claim 22 wherein the second one of the plurality of concentric ringed arrangements includes the transducer located on the portion of the front surface of the second elongate member.
24. The medical device system of Claim 23 wherein the first one of the plurality of concentric ringed arrangements is adjacent the second one of the plurality of concentric ringed arrangements.
25. The medical device system of Claim 16, 17, or 18 wherein each of the plurality of elongate members is arranged to be advanced distal end-first into the bodily cavity when the structure is in the delivery configuration.
26. A medical device system comprising:
a plurality of electrodes positionable in a bodily cavity and a structure on which the electrodes are located, the structure comprising a plurality of elongate members, the plurality of electrodes including a plurality of sets of the electrodes, each respective set of the electrodes located on a respective one of the elongate members, and each of the elongate members comprising a proximal end, a distal end, an intermediate portion positioned between the proximal end and the distal end, and a thickness, each intermediate portion comprising a front surface and a back surface opposite across the thickness of the elongate member from the front surface, wherein the structure is selectively moveable between:
a delivery configuration in which the structure is sized for percutaneous delivery to the bodily cavity, and
a deployed configuration in which the structure is sized too large for percutaneous delivery to the bodily cavity, a first elongate member of the plurality of elongate members positioned such that a portion of the front surface of the first elongate member overlaps a portion of the respective front surface of each of at least a second elongate member of the plurality of elongate members as viewed normally to the portion of the front surface of the first elongate member when the structure is in the deployed configuration,
wherein at least a first electrode of the plurality of electrodes is located at least on the portion of the front surface of the first elongate member, and
wherein the portion of the front surface of the second elongate member faces the back surface of the first elongate member at least when the structure is in the deployed configuration.
27. The medical device system of Claim 26 wherein each of the front surfaces of the plurality of elongate members faces an outward direction of the structure when the structure is in the deployed configuration.
28. The medical device system of Claim 26 wherein the portion of the front surface of the second elongate member faces the back surface of the first elongate member when the structure is in the delivery configuration.
29. The medical device system of Claim 26 wherein the portion of the front surface of the second elongate member contacts the back surface of the first elongate member when the structure is in the deployed configuration.
30. The medical device system of Claim 26 wherein each electrode in each set of the plurality of electrodes is located solely on the front surface of a respective one of the elongate members.
31. The medical device system of Claim 26, 27, 28, 29, or 30 wherein the intermediate portions of the elongate members are angularly arranged with respect to one another about an axis when the structure is in the deployed configuration.
32. The medical device system of Claim 31 wherein the intermediate portion of the first elongate member crosses the intermediate portion of the second elongate member at a location on the structure intersected by the axis when the structure is in the deployed configuration.
33. The medical device system of Claim 31 wherein each of the portion of the front surface of the first elongate member and the portion of the front surface of the second elongate member is intersected by the axis when the structure is in the deployed configuration.
34. The medical device system of Claim 31 wherein at least one electrode of the plurality of electrodes is intersected by the axis when the structure is in the deployed configuration.
35. The medical device system of Claim 34 wherein a particular electrode of the at least one electrode is located adjacently to the first electrode on the portion of the front surface of the first elongate member.
36. The medical device system of Claim 31 wherein at least some of the plurality of electrodes are arranged in a plurality of concentric ringed arrangements when the structure is in the deployed configuration, a first one of the plurality of concentric ringed arrangements having a fewer number of the electrodes than a second one of the plurality of
concentric ringed arrangements, the first one of the plurality of concentric ringed arrangements comprising the first electrode.
37. The medical device system of Claim 26, 27, 28, 29, or 30 wherein: each intermediate portion further comprises a respective pair of side edges of the front surface, the back surface, or both the front surface and the back surface of the intermediate portion, the side edges of each pair of side edges opposite to one another, each of the side edges of each pair of side edges extending between the proximal end and the distal end of the respective elongate member, and
the first elongate member is positioned such that a first edge of the pair of side edges of the first elongate member crosses a second side edge of the pair of side edges of the second elongate member when the structure is in the deployed configuration, a portion of the first edge forming a recessed portion of the first elongate member that exposes at least a portion of a second electrode located on the portion of the front surface of the second elongate member as viewed normally to the portion of the front surface of the second elongate member when the structure is in the deployed configuration.
38. A medical device system comprising:
a plurality of electrodes positionable in a bodily cavity and a structure on which the electrodes are located, the structure comprising a plurality of elongate members, each of the elongate members comprising a proximal end, a distal end, an intermediate portion positioned between the proximal end and the distal end, and a thickness, each intermediate portion comprising a front surface and a back surface opposite across the thickness of the elongate member from the front surface, and each intermediate portion further comprising a respective pair of side edges of the front surface, the back surface, or both the front surface and the back surface, the side edges of each pair of side edges opposite to one another, the side edges of each pair of side edges extending between the proximal end and the distal end of the respective elongate member, wherein the structure is selectively moveable between:
a delivery configuration in which the structure is sized for percutaneous delivery to a bodily cavity, and
a deployed configuration in which the structure is sized too large for percutaneous delivery to the bodily cavity, at least a first elongate member of the plurality of elongate members positioned such that a first side edge of the pair of side edges of the first elongate member crosses a first side edge of the pair of side edges of a second elongate member
of the plurality of elongate members at a first location and crosses a second side edge of the pair of side edges of the second elongate member at a second location when the structure is in the deployed configuration, each of one or more of the plurality of electrodes wholly located on a portion of the second elongate member, the portion of the second elongate member located between a first transverse line and a second transverse line when the structure is in the deployed configuration, the first transverse line extending across a first width of the second elongate member at the first location, and the second transverse line extending across a second width of the second elongate member at the second location.
39. The medical device system of Claim 38 wherein the first width and the second width are widths of the front surface of the second elongate member.
40. The medical device system of Claim 38 wherein the one or more electrodes comprise two or more of the plurality of electrodes.
41. The medical device system of Claim 38 wherein at least a portion of an electrode of the plurality of electrodes is located on the portion of the second elongate member.
42 The medical device system of Claim 38 wherein a first electrode of the one or more of the plurality of electrodes comprises a first electrode edge that forms part of a periphery of an electrically conductive surface of the first electrode, the first electrode edge arranged to follow a portion of the first side edge of the first elongate member between the first location and the second location when the structure is in the deployed configuration.
43. The medical device system of Claim 42 wherein the first electrode comprises a second electrode edge opposite across the electrically conductive surface from the first electrode edge, the second electrode edge forming part of the periphery of the electrically conductive surface of the first electrode, and the second electrode edge arranged to follow a portion of one of the pair of side edges of the second elongate member.
44. The medical device system of Claim 38, 39, 40, 41, 42, or 44 wherein the intermediate portions of the elongate members are angularly arranged with respect to one another about an axis when the structure is in the deployed configuration.
45. The medical device system of Claim 44 wherein the intermediate portion of the first elongate member crosses the intermediate portion of the second elongate member at a location on the structure intersected by the axis when the structure is in the deployed configuration.
46. The medical device system of Claim 44 wherein a particular one of the plurality of electrodes is intersected by the axis when the structure is in the deployed configuration.
47. The medical device system of Claim 46 wherein the one or more electrodes includes a first electrode, the first electrode located on the structure adjacent the particular one of the plurality of electrodes when the structure is in the deployed configuration.
48. The medical device system of Claim 44 wherein the one or more electrodes includes a first electrode, and wherein at least some of the plurality of electrodes are arranged in a plurality of concentric ringed arrangements when the structure is in the deployed configuration, a first one of the plurality of concentric ringed arrangements having a fewer number of the electrodes than a second one of the plurality of concentric ringed arrangements, the first one of the plurality of concentric ringed arrangements comprising the first electrode.
49. The medical device system of Claim 38, 39, 40, 41, 42, or 44 wherein a portion of the first side edge of the first elongate member extending between the first location and the second location forms a recessed portion of the first elongate member that exposes at least a portion of a particular electrode of the one or more electrodes as viewed normally to a surface of the exposed portion of the particular electrode of the one or more electrodes when the structure is in the deployed configuration.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IN9902DEN2014 IN2014DN09902A (en) | 2012-05-21 | 2013-05-06 | |
EP19215957.2A EP3649975B1 (en) | 2012-05-21 | 2013-05-06 | High-density electrode-based medical device system |
EP13793216.6A EP2825121B1 (en) | 2012-05-21 | 2013-05-06 | High-density electrode-based medical device system |
EP24153949.3A EP4335359A2 (en) | 2012-05-21 | 2013-05-06 | High-density electrode-based medical device system |
Applications Claiming Priority (12)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201261649734P | 2012-05-21 | 2012-05-21 | |
US61/649,734 | 2012-05-21 | ||
US201261670881P | 2012-07-12 | 2012-07-12 | |
US61/670,881 | 2012-07-12 | ||
US201261723311P | 2012-11-06 | 2012-11-06 | |
US61/723,311 | 2012-11-06 | ||
US201261734750P | 2012-12-07 | 2012-12-07 | |
US61/734,750 | 2012-12-07 | ||
US13/793,213 US9480525B2 (en) | 2011-01-21 | 2013-03-11 | High-density electrode-based medical device system |
US13/793,213 | 2013-03-11 | ||
US13/793,076 | 2013-03-11 | ||
US13/793,076 US9486273B2 (en) | 2011-01-21 | 2013-03-11 | High-density electrode-based medical device system |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013173917A1 true WO2013173917A1 (en) | 2013-11-28 |
Family
ID=49622969
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CA2013/050350 WO2013173917A1 (en) | 2012-05-21 | 2013-05-06 | High-density electrode-based medical device system |
Country Status (4)
Country | Link |
---|---|
US (3) | US9486273B2 (en) |
EP (3) | EP2825121B1 (en) |
IN (1) | IN2014DN09902A (en) |
WO (1) | WO2013173917A1 (en) |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8906011B2 (en) | 2007-11-16 | 2014-12-09 | Kardium Inc. | Medical device for use in bodily lumens, for example an atrium |
US8920411B2 (en) | 2006-06-28 | 2014-12-30 | Kardium Inc. | Apparatus and method for intra-cardiac mapping and ablation |
US9119633B2 (en) | 2006-06-28 | 2015-09-01 | Kardium Inc. | Apparatus and method for intra-cardiac mapping and ablation |
US9452016B2 (en) | 2011-01-21 | 2016-09-27 | Kardium Inc. | Catheter system |
US9480525B2 (en) | 2011-01-21 | 2016-11-01 | Kardium, Inc. | High-density electrode-based medical device system |
US9492227B2 (en) | 2011-01-21 | 2016-11-15 | Kardium Inc. | Enhanced medical device for use in bodily cavities, for example an atrium |
USD777926S1 (en) | 2012-01-20 | 2017-01-31 | Kardium Inc. | Intra-cardiac procedure device |
USD777925S1 (en) | 2012-01-20 | 2017-01-31 | Kardium Inc. | Intra-cardiac procedure device |
WO2017079459A3 (en) * | 2015-11-04 | 2017-06-15 | Boston Scientific Scimed, Inc. | Medical device and related methods |
US10028783B2 (en) | 2006-06-28 | 2018-07-24 | Kardium Inc. | Apparatus and method for intra-cardiac mapping and ablation |
US11259867B2 (en) | 2011-01-21 | 2022-03-01 | Kardium Inc. | High-density electrode-based medical device system |
US11389232B2 (en) | 2006-06-28 | 2022-07-19 | Kardium Inc. | Apparatus and method for intra-cardiac mapping and ablation |
US11850051B2 (en) | 2019-04-30 | 2023-12-26 | Biosense Webster (Israel) Ltd. | Mapping grid with high density electrode array |
US11878095B2 (en) | 2018-12-11 | 2024-01-23 | Biosense Webster (Israel) Ltd. | Balloon catheter with high articulation |
US11918383B2 (en) | 2020-12-21 | 2024-03-05 | Biosense Webster (Israel) Ltd. | Visualizing performance of catheter electrodes |
US11918341B2 (en) | 2019-12-20 | 2024-03-05 | Biosense Webster (Israel) Ltd. | Selective graphical presentation of electrophysiological parameters |
Families Citing this family (42)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8417313B2 (en) | 2006-08-03 | 2013-04-09 | Christoph Scharf | Method and device for determining and presenting surface charge and dipole densities on cardiac walls |
WO2009090547A2 (en) | 2008-01-17 | 2009-07-23 | Christoph Scharf | A device and method for the geometric determination of electrical dipole densities on the cardiac wall |
CA2829626C (en) | 2011-03-10 | 2020-06-16 | Acutus Medical, Inc. | Device and method for the geometric determination of electrical dipole densities on the cardiac wall |
EP2699150B1 (en) | 2011-04-22 | 2015-11-04 | Topera, Inc. | Basket style cardiac mapping catheter having a flexible electrode assembly for detection of cardiac rhythm disorders |
US9277960B2 (en) | 2011-09-08 | 2016-03-08 | Kardium Inc. | Intra-cardiac mapping and ablating |
US9861802B2 (en) | 2012-08-09 | 2018-01-09 | University Of Iowa Research Foundation | Catheters, catheter systems, and methods for puncturing through a tissue structure |
JP6316821B2 (en) * | 2012-08-31 | 2018-04-25 | アクタス メディカル インクAcutus Medical,Inc. | Ablation system |
CN108209986B (en) | 2013-02-08 | 2020-11-10 | 阿库图森医疗有限公司 | Expandable catheter assembly with flexible printed circuit board |
US10828011B2 (en) | 2013-09-13 | 2020-11-10 | Acutus Medical, Inc. | Devices and methods for determination of electrical dipole densities on a cardiac surface |
WO2015103574A1 (en) | 2014-01-06 | 2015-07-09 | Iowa Approach Inc. | Apparatus and methods for renal denervation ablation |
US20150270634A1 (en) * | 2014-03-21 | 2015-09-24 | St. Jude Medical, Cardiology Division, Inc. | Electrode assembly for catheter system including struts having a non-uniform thickness |
US11278231B2 (en) | 2014-03-25 | 2022-03-22 | Acutus Medical, Inc. | Cardiac analysis user interface system and method |
EP3495018B1 (en) | 2014-05-07 | 2023-09-06 | Farapulse, Inc. | Apparatus for selective tissue ablation |
EP3154463B1 (en) | 2014-06-12 | 2019-03-27 | Farapulse, Inc. | Apparatus for rapid and selective transurethral tissue ablation |
WO2015192018A1 (en) | 2014-06-12 | 2015-12-17 | Iowa Approach Inc. | Method and apparatus for rapid and selective tissue ablation with cooling |
WO2016060983A1 (en) | 2014-10-14 | 2016-04-21 | Iowa Approach Inc. | Method and apparatus for rapid and safe pulmonary vein cardiac ablation |
EP3791771B1 (en) | 2014-11-18 | 2023-07-19 | Kardium Inc. | Systems for activating transducers |
CN107405099B (en) * | 2015-05-11 | 2021-02-09 | 圣犹达医疗用品心脏病学部门有限公司 | High density mapping and ablation catheter |
WO2016183179A1 (en) | 2015-05-12 | 2016-11-17 | Acutus Medical, Inc. | Cardiac virtualization test tank and testing system and method |
EP3294122A4 (en) | 2015-05-12 | 2018-10-31 | Acutus Medical Inc. | Ultrasound sequencing system and method |
US10653318B2 (en) | 2015-05-13 | 2020-05-19 | Acutus Medical, Inc. | Localization system and method useful in the acquisition and analysis of cardiac information |
US20160338770A1 (en) * | 2015-05-19 | 2016-11-24 | Biosense Webster (Israel) Ltd. | Woven foldable catheter |
US10362953B2 (en) | 2015-12-11 | 2019-07-30 | Biosense Webster (Israel) Ltd. | Electrode array catheter with interconnected framework |
US10130423B1 (en) | 2017-07-06 | 2018-11-20 | Farapulse, Inc. | Systems, devices, and methods for focal ablation |
US10172673B2 (en) | 2016-01-05 | 2019-01-08 | Farapulse, Inc. | Systems devices, and methods for delivery of pulsed electric field ablative energy to endocardial tissue |
US20170189097A1 (en) | 2016-01-05 | 2017-07-06 | Iowa Approach Inc. | Systems, apparatuses and methods for delivery of ablative energy to tissue |
US10660702B2 (en) | 2016-01-05 | 2020-05-26 | Farapulse, Inc. | Systems, devices, and methods for focal ablation |
EP3973908A1 (en) | 2016-05-03 | 2022-03-30 | Acutus Medical Inc. | Cardiac mapping system with efficiency algorithm |
WO2017218734A1 (en) | 2016-06-16 | 2017-12-21 | Iowa Approach, Inc. | Systems, apparatuses, and methods for guide wire delivery |
US9987081B1 (en) | 2017-04-27 | 2018-06-05 | Iowa Approach, Inc. | Systems, devices, and methods for signal generation |
US10617867B2 (en) | 2017-04-28 | 2020-04-14 | Farapulse, Inc. | Systems, devices, and methods for delivery of pulsed electric field ablative energy to esophageal tissue |
JP2020533050A (en) | 2017-09-12 | 2020-11-19 | ファラパルス,インコーポレイテッド | Systems, devices, and methods for ventricular focal ablation |
CN112087980B (en) | 2018-05-07 | 2023-01-10 | 波士顿科学医学有限公司 | Systems, devices, and methods for delivering ablation energy to tissue |
WO2019217300A1 (en) | 2018-05-07 | 2019-11-14 | Farapulse, Inc. | Epicardial ablation catheter |
JP7379377B2 (en) | 2018-05-07 | 2023-11-14 | ファラパルス,インコーポレイテッド | Systems, devices, and methods for filtering high voltage noise induced by pulsed electric field ablation |
US10687892B2 (en) | 2018-09-20 | 2020-06-23 | Farapulse, Inc. | Systems, apparatuses, and methods for delivery of pulsed electric field ablative energy to endocardial tissue |
EP3986495A4 (en) * | 2019-06-24 | 2023-06-21 | Neuroone Medical Technologies Corporation | Minimally invasive electrode and delivery device and related systems and methods |
US10625080B1 (en) | 2019-09-17 | 2020-04-21 | Farapulse, Inc. | Systems, apparatuses, and methods for detecting ectopic electrocardiogram signals during pulsed electric field ablation |
US11497541B2 (en) | 2019-11-20 | 2022-11-15 | Boston Scientific Scimed, Inc. | Systems, apparatuses, and methods for protecting electronic components from high power noise induced by high voltage pulses |
US11065047B2 (en) | 2019-11-20 | 2021-07-20 | Farapulse, Inc. | Systems, apparatuses, and methods for protecting electronic components from high power noise induced by high voltage pulses |
US10842572B1 (en) | 2019-11-25 | 2020-11-24 | Farapulse, Inc. | Methods, systems, and apparatuses for tracking ablation devices and generating lesion lines |
US11918281B2 (en) | 2020-10-07 | 2024-03-05 | Biosense Webster (Israel) Ltd. | Folding fan catheter with electrodes |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5327889A (en) * | 1992-12-01 | 1994-07-12 | Cardiac Pathways Corporation | Mapping and ablation catheter with individually deployable arms and method |
WO1997017892A1 (en) | 1995-11-13 | 1997-05-22 | Cardiac Pathways Corporation | Endocardial mapping and/or ablation catheter probe and method |
WO2012100185A2 (en) * | 2011-01-21 | 2012-07-26 | Kardium Inc. | Enhanced medical device for use in bodily cavities, for example an atrium |
Family Cites Families (478)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4225148A (en) | 1972-02-10 | 1980-09-30 | Aktiebolaget Svenska Kullagerfabriken | Steering systems |
US4114202A (en) | 1977-01-28 | 1978-09-19 | Roy Henry A | Prosthetic valve assembly for use in cardiovascular surgery |
US4164046A (en) | 1977-05-16 | 1979-08-14 | Cooley Denton | Valve prosthesis |
DE2815756C3 (en) | 1978-04-12 | 1982-01-28 | Ernst-Wilhelm 5303 Bornheim Müller | Prosthetic closure element to replace the valves in the human heart |
US4240441A (en) | 1978-10-10 | 1980-12-23 | The United States Of America As Represented By The Secretary Of The Navy | Carotid thermodilution catheter |
US4273128A (en) | 1980-01-14 | 1981-06-16 | Lary Banning G | Coronary cutting and dilating instrument |
US4411266A (en) | 1980-09-24 | 1983-10-25 | Cosman Eric R | Thermocouple radio frequency lesion electrode |
US4576182A (en) | 1981-04-23 | 1986-03-18 | University Of Utah | Method and apparatus for measuring liquid flow |
DE3365190D1 (en) | 1982-01-20 | 1986-09-18 | Martin Morris Black | Artificial heart valves |
US4543090A (en) | 1983-10-31 | 1985-09-24 | Mccoy William C | Steerable and aimable catheter |
US4699147A (en) | 1985-09-25 | 1987-10-13 | Cordis Corporation | Intraventricular multielectrode cardial mapping probe and method for using same |
US4940064A (en) | 1986-11-14 | 1990-07-10 | Desai Jawahar M | Catheter for mapping and ablation and method therefor |
US4890612A (en) | 1987-02-17 | 1990-01-02 | Kensey Nash Corporation | Device for sealing percutaneous puncture in a vessel |
DE3715699A1 (en) | 1987-05-12 | 1988-12-01 | Foerster Ernst | CATHETER AND ENDOSCOPE FOR THE TRANSPAPILLARY DISPLAY OF THE GALLEN BLADDER |
US5478353A (en) | 1987-05-14 | 1995-12-26 | Yoon; Inbae | Suture tie device system and method for suturing anatomical tissue proximate an opening |
US4770187A (en) | 1987-06-29 | 1988-09-13 | Md Engineering | Surgical aspirator and monitor |
US4787369A (en) | 1987-08-14 | 1988-11-29 | Welch Allyn, Inc. | Force relieving, force limiting self-adjusting steering for borescope or endoscope |
US4794912A (en) | 1987-08-17 | 1989-01-03 | Welch Allyn, Inc. | Borescope or endoscope with fluid dynamic muscle |
NL8702371A (en) | 1987-10-05 | 1989-05-01 | Erik Leonard Hoffman | ADJUSTABLE PROSTHESIS. |
US4887613A (en) | 1987-11-23 | 1989-12-19 | Interventional Technologies Inc. | Cutter for atherectomy device |
US4942788A (en) | 1987-11-23 | 1990-07-24 | Interventional Technologies, Inc. | Method of manufacturing a cutter for atherectomy device |
US4895166A (en) | 1987-11-23 | 1990-01-23 | Interventional Technologies, Inc. | Rotatable cutter for the lumen of a blood vesel |
US4890602A (en) | 1987-11-25 | 1990-01-02 | Hake Lawrence W | Endoscope construction with means for controlling rigidity and curvature of flexible endoscope tube |
US4893613A (en) | 1987-11-25 | 1990-01-16 | Hake Lawrence W | Endoscope construction with means for controlling rigidity and curvature of flexible endoscope tube |
US4850957A (en) | 1988-01-11 | 1989-07-25 | American Biomed, Inc. | Atherectomy catheter |
US4998933A (en) | 1988-06-10 | 1991-03-12 | Advanced Angioplasty Products, Inc. | Thermal angioplasty catheter and method |
US5178620A (en) | 1988-06-10 | 1993-01-12 | Advanced Angioplasty Products, Inc. | Thermal dilatation catheter and method |
US5047047A (en) | 1988-10-26 | 1991-09-10 | Inbae Yoon | Wound closing device |
JPH02128753A (en) | 1988-11-09 | 1990-05-17 | Terumo Corp | Apparatus for measuring cardiac output |
US5026384A (en) | 1989-11-07 | 1991-06-25 | Interventional Technologies, Inc. | Atherectomy systems and methods |
US5122137A (en) | 1990-04-27 | 1992-06-16 | Boston Scientific Corporation | Temperature controlled rf coagulation |
US5127902A (en) | 1990-09-05 | 1992-07-07 | Medical Innovative Technologies R&D Limited Partnership | Apparatus and method for precisely controlling the excision of obstructive tissue in a human blood vessel |
US5496267A (en) | 1990-11-08 | 1996-03-05 | Possis Medical, Inc. | Asymmetric water jet atherectomy |
US5195505A (en) | 1990-12-27 | 1993-03-23 | United States Surgical Corporation | Surgical retractor |
US5345936A (en) | 1991-02-15 | 1994-09-13 | Cardiac Pathways Corporation | Apparatus with basket assembly for endocardial mapping |
US5465717A (en) | 1991-02-15 | 1995-11-14 | Cardiac Pathways Corporation | Apparatus and Method for ventricular mapping and ablation |
US5456254A (en) | 1991-02-15 | 1995-10-10 | Cardiac Pathways Corp | Flexible strip assembly having insulating layer with conductive pads exposed through insulating layer and device utilizing the same |
US5156151A (en) | 1991-02-15 | 1992-10-20 | Cardiac Pathways Corporation | Endocardial mapping and ablation system and catheter probe |
US5228442A (en) | 1991-02-15 | 1993-07-20 | Cardiac Pathways Corporation | Method for mapping, ablation, and stimulation using an endocardial catheter |
US5201316A (en) | 1991-03-18 | 1993-04-13 | Cardiovascular Imaging Systems, Inc. | Guide wire receptacle for catheters having rigid housings |
US5153151A (en) | 1991-05-06 | 1992-10-06 | Corning Incorporated | High index fluorine-free phosphate glasses |
USD484979S1 (en) | 1991-06-28 | 2004-01-06 | Cook Incorporated | Implantable intravascular stent |
US5620481A (en) | 1991-07-05 | 1997-04-15 | Desai; Jawahar M. | Device for multi-phase radio-frequency ablation |
US5174299A (en) | 1991-08-12 | 1992-12-29 | Cardiac Pacemakers, Inc. | Thermocouple-based blood flow sensor |
DK0528312T3 (en) | 1991-08-13 | 1997-12-29 | Takeda Chemical Industries Ltd | Cyclic peptides and their use |
US5713896A (en) | 1991-11-01 | 1998-02-03 | Medical Scientific, Inc. | Impedance feedback electrosurgical system |
US5282827A (en) | 1991-11-08 | 1994-02-01 | Kensey Nash Corporation | Hemostatic puncture closure system and method of use |
US5317952A (en) | 1991-11-22 | 1994-06-07 | Kinetic Sciences Inc. | Tentacle-like manipulators with adjustable tension lines |
US5366443A (en) | 1992-01-07 | 1994-11-22 | Thapliyal And Eggers Partners | Method and apparatus for advancing catheters through occluded body lumens |
US5419767A (en) | 1992-01-07 | 1995-05-30 | Thapliyal And Eggers Partners | Methods and apparatus for advancing catheters through severely occluded body lumens |
US5192291A (en) | 1992-01-13 | 1993-03-09 | Interventional Technologies, Inc. | Rotationally expandable atherectomy cutter assembly |
AU3727993A (en) | 1992-02-21 | 1993-09-13 | Diasonics Inc. | Ultrasound intracavity system for imaging therapy planning and treatment of focal disease |
US5555883A (en) | 1992-02-24 | 1996-09-17 | Avitall; Boaz | Loop electrode array mapping and ablation catheter for cardiac chambers |
US5443470A (en) | 1992-05-01 | 1995-08-22 | Vesta Medical, Inc. | Method and apparatus for endometrial ablation |
US5562720A (en) | 1992-05-01 | 1996-10-08 | Vesta Medical, Inc. | Bipolar/monopolar endometrial ablation device and method |
US5176693A (en) | 1992-05-11 | 1993-01-05 | Interventional Technologies, Inc. | Balloon expandable atherectomy cutter |
US5255679A (en) | 1992-06-02 | 1993-10-26 | Cardiac Pathways Corporation | Endocardial catheter for mapping and/or ablation with an expandable basket structure having means for providing selective reinforcement and pressure sensing mechanism for use therewith, and method |
US5324284A (en) | 1992-06-05 | 1994-06-28 | Cardiac Pathways, Inc. | Endocardial mapping and ablation system utilizing a separately controlled ablation catheter and method |
US5782239A (en) | 1992-06-30 | 1998-07-21 | Cordis Webster, Inc. | Unique electrode configurations for cardiovascular electrode catheter with built-in deflection method and central puller wire |
US5341807A (en) | 1992-06-30 | 1994-08-30 | American Cardiac Ablation Co., Inc. | Ablation catheter positioning system |
US5245987A (en) | 1992-07-31 | 1993-09-21 | Vir Engineering | Surgical instrument with extendable blades |
US5351679A (en) | 1992-08-17 | 1994-10-04 | Ilya Mayzels | Surgical endoscopic retractor instrument |
US5242386A (en) | 1992-08-27 | 1993-09-07 | Sontech Limited | Echographic suction cannula |
US5662587A (en) | 1992-09-16 | 1997-09-02 | Cedars Sinai Medical Center | Robotic endoscopy |
USRE41334E1 (en) | 1992-09-23 | 2010-05-11 | St. Jude Medical, Atrial Fibrillation Division, Inc. | Endocardial mapping system |
US5297549A (en) | 1992-09-23 | 1994-03-29 | Endocardial Therapeutics, Inc. | Endocardial mapping system |
US5662108A (en) | 1992-09-23 | 1997-09-02 | Endocardial Solutions, Inc. | Electrophysiology mapping system |
US5311866A (en) | 1992-09-23 | 1994-05-17 | Endocardial Therapeutics, Inc. | Heart mapping catheter |
US5293869A (en) | 1992-09-25 | 1994-03-15 | Ep Technologies, Inc. | Cardiac probe with dynamic support for maintaining constant surface contact during heart systole and diastole |
US5309910A (en) | 1992-09-25 | 1994-05-10 | Ep Technologies, Inc. | Cardiac mapping and ablation systems |
US5549108A (en) | 1992-09-25 | 1996-08-27 | Ep Technologies, Inc. | Cardiac mapping and ablation systems |
US5687737A (en) | 1992-10-09 | 1997-11-18 | Washington University | Computerized three-dimensional cardiac mapping with interactive visual displays |
US5431696A (en) | 1992-10-13 | 1995-07-11 | Atlee, Iii; John L. | Esophageal probe for transeophageal cardiac stimulation |
US5487730A (en) | 1992-12-30 | 1996-01-30 | Medtronic, Inc. | Balloon catheter with balloon surface retention means |
DE69433774T2 (en) | 1993-02-19 | 2005-04-14 | Boston Scientific Corp., Natick | SURGICAL EXTRACTOR |
US5433198A (en) | 1993-03-11 | 1995-07-18 | Desai; Jawahar M. | Apparatus and method for cardiac ablation |
US5893847A (en) * | 1993-03-16 | 1999-04-13 | Ep Technologies, Inc. | Multiple electrode support structures with slotted hub and hoop spline elements |
US5476495A (en) * | 1993-03-16 | 1995-12-19 | Ep Technologies, Inc. | Cardiac mapping and ablation systems |
US6233491B1 (en) | 1993-03-16 | 2001-05-15 | Ep Technologies, Inc. | Cardiac mapping and ablation systems |
US5636634A (en) | 1993-03-16 | 1997-06-10 | Ep Technologies, Inc. | Systems using guide sheaths for introducing, deploying, and stabilizing cardiac mapping and ablation probes |
US5823189A (en) | 1993-03-16 | 1998-10-20 | Ep Technologies, Inc. | Multiple electrode support structures with spline elements and over-molded hub |
US20020115941A1 (en) | 1993-04-15 | 2002-08-22 | Scimed Life Systems, Inc. | Systems and methods using annotated images for controlling the use of diagnostic or therapeutic instruments in interior body regions |
US6241747B1 (en) | 1993-05-03 | 2001-06-05 | Quill Medical, Inc. | Barbed Bodily tissue connector |
US5312435A (en) | 1993-05-17 | 1994-05-17 | Kensey Nash Corporation | Fail predictable, reinforced anchor for hemostatic puncture closure |
US5351551A (en) | 1993-05-27 | 1994-10-04 | The Fredericks Company | Convection thermocouple vacuum gauge |
US5738096A (en) | 1993-07-20 | 1998-04-14 | Biosense, Inc. | Cardiac electromechanics |
US5397321A (en) | 1993-07-30 | 1995-03-14 | Ep Technologies, Inc. | Variable curve electrophysiology catheter |
US5797398A (en) | 1993-08-13 | 1998-08-25 | Thermal Technologies, Inc. | Method and apparatus for measuring continuous blood flow at low power |
US5450860A (en) | 1993-08-31 | 1995-09-19 | W. L. Gore & Associates, Inc. | Device for tissue repair and method for employing same |
US5379773A (en) | 1993-09-17 | 1995-01-10 | Hornsby; James J. | Echographic suction cannula and electronics therefor |
US5881727A (en) | 1993-10-14 | 1999-03-16 | Ep Technologies, Inc. | Integrated cardiac mapping and ablation probe |
EP0754075B1 (en) | 1993-10-14 | 2006-03-15 | Boston Scientific Limited | Electrode elements for forming lesion patterns |
WO1995010320A1 (en) | 1993-10-15 | 1995-04-20 | Ep Technologies, Inc. | Device for lengthening cardiac conduction pathways |
US5575810A (en) | 1993-10-15 | 1996-11-19 | Ep Technologies, Inc. | Composite structures and methods for ablating tissue to form complex lesion patterns in the treatment of cardiac conditions and the like |
US5545193A (en) | 1993-10-15 | 1996-08-13 | Ep Technologies, Inc. | Helically wound radio-frequency emitting electrodes for creating lesions in body tissue |
WO1995010225A1 (en) | 1993-10-15 | 1995-04-20 | Ep Technologies, Inc. | Multiple electrode element for mapping and ablating |
WO1995010322A1 (en) | 1993-10-15 | 1995-04-20 | Ep Technologies, Inc. | Creating complex lesion patterns in body tissue |
US6001093A (en) | 1993-10-15 | 1999-12-14 | Ep Technologies, Inc. | Systems and methods for creating long, thin lesions in body tissue |
US5599345A (en) | 1993-11-08 | 1997-02-04 | Zomed International, Inc. | RF treatment apparatus |
US5730127A (en) | 1993-12-03 | 1998-03-24 | Avitall; Boaz | Mapping and ablation catheter system |
US5921924A (en) | 1993-12-03 | 1999-07-13 | Avitall; Boaz | Mapping and ablation catheter system utilizing multiple control elements |
US5487385A (en) | 1993-12-03 | 1996-01-30 | Avitall; Boaz | Atrial mapping and ablation catheter system |
US5485849A (en) | 1994-01-31 | 1996-01-23 | Ep Technologies, Inc. | System and methods for matching electrical characteristics and propagation velocities in cardiac tissue |
US5577509A (en) | 1994-01-28 | 1996-11-26 | Ep Technologies, Inc. | Systems and methods for examining the electrical characteristics and timing of electrical events in cardiac tissue |
WO1995020349A1 (en) | 1994-01-28 | 1995-08-03 | Ep Technologies, Inc. | Matching cardiac electrical characteristics and propagation velocities |
WO1995020344A1 (en) | 1994-01-28 | 1995-08-03 | Ep Technologies, Inc. | System for examining cardiac tissue electrical characteristics |
US5462545A (en) | 1994-01-31 | 1995-10-31 | New England Medical Center Hospitals, Inc. | Catheter electrodes |
US5968040A (en) | 1994-03-04 | 1999-10-19 | Ep Technologies, Inc. | Systems and methods using asymmetric multiple electrode arrays |
US6216043B1 (en) | 1994-03-04 | 2001-04-10 | Ep Technologies, Inc. | Asymmetric multiple electrode support structures |
US5598848A (en) | 1994-03-31 | 1997-02-04 | Ep Technologies, Inc. | Systems and methods for positioning multiple electrode structures in electrical contact with the myocardium |
US5681308A (en) | 1994-06-24 | 1997-10-28 | Stuart D. Edwards | Ablation apparatus for cardiac chambers |
US6056744A (en) | 1994-06-24 | 2000-05-02 | Conway Stuart Medical, Inc. | Sphincter treatment apparatus |
US6217610B1 (en) | 1994-07-29 | 2001-04-17 | Edwards Lifesciences Corporation | Expandable annuloplasty ring |
US6030382A (en) | 1994-08-08 | 2000-02-29 | Ep Technologies, Inc. | Flexible tissue ablatin elements for making long lesions |
US5593424A (en) | 1994-08-10 | 1997-01-14 | Segmed, Inc. | Apparatus and method for reducing and stabilizing the circumference of a vascular structure |
US5549633A (en) | 1994-08-24 | 1996-08-27 | Kensey Nash Corporation | Apparatus and methods of use for preventing blood seepage at a percutaneous puncture site |
US6572609B1 (en) | 1999-07-14 | 2003-06-03 | Cardiofocus, Inc. | Phototherapeutic waveguide apparatus |
US5885278A (en) | 1994-10-07 | 1999-03-23 | E.P. Technologies, Inc. | Structures for deploying movable electrode elements |
US5836947A (en) | 1994-10-07 | 1998-11-17 | Ep Technologies, Inc. | Flexible structures having movable splines for supporting electrode elements |
US5941251A (en) | 1994-10-11 | 1999-08-24 | Ep Technologies, Inc. | Systems for locating and guiding operative elements within interior body regions |
US6678552B2 (en) | 1994-10-24 | 2004-01-13 | Transscan Medical Ltd. | Tissue characterization based on impedance images and on impedance measurements |
US5630813A (en) | 1994-12-08 | 1997-05-20 | Kieturakis; Maciej J. | Electro-cauterizing dissector and method for facilitating breast implant procedure |
US5595183A (en) | 1995-02-17 | 1997-01-21 | Ep Technologies, Inc. | Systems and methods for examining heart tissue employing multiple electrode structures and roving electrodes |
US5557967A (en) | 1995-02-24 | 1996-09-24 | Pacesetter, Inc. | Thermopile flow sensor |
US5531760A (en) | 1995-04-14 | 1996-07-02 | Alwafaie; Mohammed G. | Skin closure clip |
US5782879A (en) | 1995-06-02 | 1998-07-21 | Sulzer Intermedics Inc. | Apparatus and method for discriminating flow of blood in a cardiovascular system |
US5718241A (en) | 1995-06-07 | 1998-02-17 | Biosense, Inc. | Apparatus and method for treating cardiac arrhythmias with no discrete target |
US6023638A (en) | 1995-07-28 | 2000-02-08 | Scimed Life Systems, Inc. | System and method for conducting electrophysiological testing using high-voltage energy pulses to stun tissue |
US6330478B1 (en) | 1995-08-15 | 2001-12-11 | Rita Medical Systems, Inc. | Cell necrosis apparatus |
US5681336A (en) | 1995-09-07 | 1997-10-28 | Boston Scientific Corporation | Therapeutic device for treating vien graft lesions |
EP0955883B1 (en) | 1995-09-20 | 2002-07-31 | Texas Heart Institute | Detecting thermal discrepancies in vessel walls |
AU720907B2 (en) | 1995-12-01 | 2000-06-15 | Medtronic, Inc. | Annuloplasty prosthesis |
US5868743A (en) | 1995-12-13 | 1999-02-09 | Children's Medical Center Corporation | Cardiac ablation system with low temperature target site identification |
US5697285A (en) | 1995-12-21 | 1997-12-16 | Nappi; Bruce | Actuators for simulating muscle activity in robotics |
US5891136A (en) | 1996-01-19 | 1999-04-06 | Ep Technologies, Inc. | Expandable-collapsible mesh electrode structures |
US5904711A (en) | 1996-02-08 | 1999-05-18 | Heartport, Inc. | Expandable thoracoscopic defibrillation catheter system and method |
US5704914A (en) | 1996-02-23 | 1998-01-06 | Stocking; John E. | Catheter placement assembly |
US5853422A (en) | 1996-03-22 | 1998-12-29 | Scimed Life Systems, Inc. | Apparatus and method for closing a septal defect |
GB2314274A (en) | 1996-06-20 | 1997-12-24 | Gyrus Medical Ltd | Electrode construction for an electrosurgical instrument |
US6102885A (en) | 1996-08-08 | 2000-08-15 | Bass; Lawrence S. | Device for suction-assisted lipectomy and method of using same |
US6719755B2 (en) | 1996-10-22 | 2004-04-13 | Epicor Medical, Inc. | Methods and devices for ablation |
US6840936B2 (en) | 1996-10-22 | 2005-01-11 | Epicor Medical, Inc. | Methods and devices for ablation |
US5904651A (en) | 1996-10-28 | 1999-05-18 | Ep Technologies, Inc. | Systems and methods for visualizing tissue during diagnostic or therapeutic procedures |
US5716397A (en) | 1996-12-06 | 1998-02-10 | Medtronic, Inc. | Annuloplasty device with removable stiffening element |
US5782861A (en) | 1996-12-23 | 1998-07-21 | Sub Q Inc. | Percutaneous hemostasis device |
US5961440A (en) | 1997-01-02 | 1999-10-05 | Myocor, Inc. | Heart wall tension reduction apparatus and method |
US5868755A (en) | 1997-01-16 | 1999-02-09 | Atrion Medical Products, Inc. | Sheath retractor mechanism and method |
WO2000032126A1 (en) | 1997-02-27 | 2000-06-08 | Cryocath Technologies Inc. | Cryosurgical catheter |
US5916163A (en) | 1997-03-07 | 1999-06-29 | Ep Technologies, Inc. | Graphical user interface for use with multiple electrode catheters |
US5800495A (en) | 1997-03-27 | 1998-09-01 | Sulzer Intermedics Inc. | Endocardial lead assembly |
EP0973437A4 (en) | 1997-03-31 | 2001-03-07 | Telecom Medical Inc | Patient monitoring apparatus |
US5879295A (en) | 1997-04-02 | 1999-03-09 | Medtronic, Inc. | Enhanced contact steerable bowing electrode catheter assembly |
US6001069A (en) | 1997-05-01 | 1999-12-14 | Ekos Corporation | Ultrasound catheter for providing a therapeutic effect to a vessel of a body |
US6855143B2 (en) | 1997-06-13 | 2005-02-15 | Arthrocare Corporation | Electrosurgical systems and methods for recanalization of occluded body lumens |
WO1999000059A1 (en) | 1997-06-27 | 1999-01-07 | The Trustees Of Columbia University In The City Of New York | Method and apparatus for circulatory valve repair |
US6117101A (en) | 1997-07-08 | 2000-09-12 | The Regents Of The University Of California | Circumferential ablation device assembly |
US6514249B1 (en) | 1997-07-08 | 2003-02-04 | Atrionix, Inc. | Positioning system and method for orienting an ablation element within a pulmonary vein ostium |
US6869431B2 (en) | 1997-07-08 | 2005-03-22 | Atrionix, Inc. | Medical device with sensor cooperating with expandable member |
US6015414A (en) | 1997-08-29 | 2000-01-18 | Stereotaxis, Inc. | Method and apparatus for magnetically controlling motion direction of a mechanically pushed catheter |
US5836990A (en) | 1997-09-19 | 1998-11-17 | Medtronic, Inc. | Method and apparatus for determining electrode/tissue contact |
US5876343A (en) | 1997-09-23 | 1999-03-02 | Scimed Life Systems, Inc. | Methods and apparatus for blood speckle detection in an intravascular ultrasound imaging system |
US6304769B1 (en) | 1997-10-16 | 2001-10-16 | The Regents Of The University Of California | Magnetically directable remote guidance systems, and methods of use thereof |
US6063082A (en) | 1997-11-04 | 2000-05-16 | Scimed Life Systems, Inc. | Percutaneous myocardial revascularization basket delivery system and radiofrequency therapeutic device |
US6156046A (en) | 1997-11-07 | 2000-12-05 | Prolifix Medical, Inc. | Methods and systems for treating obstructions in a body lumen |
US6104944A (en) | 1997-11-17 | 2000-08-15 | Martinelli; Michael A. | System and method for navigating a multiple electrode catheter |
AU1927399A (en) | 1998-01-16 | 1999-08-02 | Lumend, Inc. | Catheter apparatus for treating arterial occlusions |
US6517534B1 (en) | 1998-02-11 | 2003-02-11 | Cosman Company, Inc. | Peri-urethral ablation |
US6331166B1 (en) | 1998-03-03 | 2001-12-18 | Senorx, Inc. | Breast biopsy system and method |
US6142993A (en) | 1998-02-27 | 2000-11-07 | Ep Technologies, Inc. | Collapsible spline structure using a balloon as an expanding actuator |
US6471700B1 (en) | 1998-04-08 | 2002-10-29 | Senorx, Inc. | Apparatus and method for accessing biopsy site |
US6115626A (en) | 1998-03-26 | 2000-09-05 | Scimed Life Systems, Inc. | Systems and methods using annotated images for controlling the use of diagnostic or therapeutic instruments in instruments in interior body regions |
US6014581A (en) | 1998-03-26 | 2000-01-11 | Ep Technologies, Inc. | Interface for performing a diagnostic or therapeutic procedure on heart tissue with an electrode structure |
US6106460A (en) | 1998-03-26 | 2000-08-22 | Scimed Life Systems, Inc. | Interface for controlling the display of images of diagnostic or therapeutic instruments in interior body regions and related data |
DE19817553A1 (en) | 1998-04-15 | 1999-10-21 | Biotronik Mess & Therapieg | Ablation arrangement |
US6558378B2 (en) | 1998-05-05 | 2003-05-06 | Cardiac Pacemakers, Inc. | RF ablation system and method having automatic temperature control |
US6428537B1 (en) * | 1998-05-22 | 2002-08-06 | Scimed Life Systems, Inc. | Electrophysiological treatment methods and apparatus employing high voltage pulse to render tissue temporarily unresponsive |
US6763836B2 (en) | 1998-06-02 | 2004-07-20 | Arthrocare Corporation | Methods for electrosurgical tendon vascularization |
US5919207A (en) | 1998-06-02 | 1999-07-06 | Taheri; Syde A. | Percutaneous arterial closure with staples |
US7198635B2 (en) | 2000-10-17 | 2007-04-03 | Asthmatx, Inc. | Modification of airways by application of energy |
US6250308B1 (en) | 1998-06-16 | 2001-06-26 | Cardiac Concepts, Inc. | Mitral valve annuloplasty ring and method of implanting |
WO1999065561A1 (en) | 1998-06-19 | 1999-12-23 | Cordis Webster, Inc. | Method and apparatus for transvascular treatment of tachycardia and fibrillation |
US6119030A (en) | 1998-06-22 | 2000-09-12 | Ep Technologies, Inc. | Silicone tip for multiple electrode basket assemblies |
US6322559B1 (en) | 1998-07-06 | 2001-11-27 | Vnus Medical Technologies, Inc. | Electrode catheter having coil structure |
US6346105B1 (en) | 1998-07-27 | 2002-02-12 | Quantum Cor Incorporated | Device for treating tissue and methods thereof |
US6123702A (en) | 1998-09-10 | 2000-09-26 | Scimed Life Systems, Inc. | Systems and methods for controlling power in an electrosurgical probe |
US6036689A (en) | 1998-09-24 | 2000-03-14 | Tu; Lily Chen | Ablation device for treating atherosclerotic tissues |
US6258258B1 (en) | 1998-10-06 | 2001-07-10 | Exxon Research And Engineering Company | Process for treatment of petroleum acids with ammonia |
US6210406B1 (en) | 1998-12-03 | 2001-04-03 | Cordis Webster, Inc. | Split tip electrode catheter and signal processing RF ablation system |
IL128286A (en) | 1999-01-29 | 2004-01-04 | Sightline Techn Ltd | Propulsion of a probe in the colon using a flexible sleeve |
US6248124B1 (en) | 1999-02-22 | 2001-06-19 | Tyco Healthcare Group | Arterial hole closure apparatus |
US7174201B2 (en) | 1999-03-11 | 2007-02-06 | Biosense, Inc. | Position sensing system with integral location pad and position display |
US6540670B1 (en) | 1999-03-19 | 2003-04-01 | Olympus Optical Co., Ltd. | Endoscope system |
US6325797B1 (en) | 1999-04-05 | 2001-12-04 | Medtronic, Inc. | Ablation catheter and method for isolating a pulmonary vein |
WO2000059375A1 (en) | 1999-04-05 | 2000-10-12 | The Regents Of The University Of California | Endomyocardial monophasic action potential for early detection of myocardium pathology |
US7563267B2 (en) | 1999-04-09 | 2009-07-21 | Evalve, Inc. | Fixation device and methods for engaging tissue |
US6391024B1 (en) | 1999-06-17 | 2002-05-21 | Cardiac Pacemakers, Inc. | RF ablation apparatus and method having electrode/tissue contact assessment scheme and electrocardiogram filtering |
SE514718C2 (en) | 1999-06-29 | 2001-04-09 | Jan Otto Solem | Apparatus for treating defective closure of the mitral valve apparatus |
US7192442B2 (en) | 1999-06-30 | 2007-03-20 | Edwards Lifesciences Ag | Method and device for treatment of mitral insufficiency |
US6997951B2 (en) | 1999-06-30 | 2006-02-14 | Edwards Lifesciences Ag | Method and device for treatment of mitral insufficiency |
US8540704B2 (en) | 1999-07-14 | 2013-09-24 | Cardiofocus, Inc. | Guided cardiac ablation catheters |
DE60020566T2 (en) | 1999-07-30 | 2006-05-04 | Boston Scientific Ltd., St. Michael | CATHETER WITH DRIVE AND CLUTCH FOR TURNING AND LENGTH SHIFTING |
WO2001008575A2 (en) | 1999-07-30 | 2001-02-08 | Cardiofocus, Inc. | Optical fiber basket device for cardiac photoablation |
US7674222B2 (en) | 1999-08-09 | 2010-03-09 | Cardiokinetix, Inc. | Cardiac device and methods of use thereof |
US7279007B2 (en) | 1999-08-09 | 2007-10-09 | Cardioklnetix, Inc. | Method for improving cardiac function |
US7582051B2 (en) | 2005-06-10 | 2009-09-01 | Cardiokinetix, Inc. | Peripheral seal for a ventricular partitioning device |
US20030109770A1 (en) | 1999-08-09 | 2003-06-12 | Sharkey Hugh R. | Device with a porous membrane for improving cardiac function |
US8257428B2 (en) | 1999-08-09 | 2012-09-04 | Cardiokinetix, Inc. | System for improving cardiac function |
US20060229491A1 (en) | 2002-08-01 | 2006-10-12 | Cardiokinetix, Inc. | Method for treating myocardial rupture |
US6471693B1 (en) | 1999-09-10 | 2002-10-29 | Cryocath Technologies Inc. | Catheter and system for monitoring tissue contact |
US6358258B1 (en) | 1999-09-14 | 2002-03-19 | Abbott Laboratories | Device and method for performing end-to-side anastomosis |
US6607520B2 (en) | 1999-09-15 | 2003-08-19 | The General Hospital Corporation | Coiled ablation catheter system |
US20030069570A1 (en) | 1999-10-02 | 2003-04-10 | Witzel Thomas H. | Methods for repairing mitral valve annulus percutaneously |
US6485489B2 (en) | 1999-10-02 | 2002-11-26 | Quantum Cor, Inc. | Catheter system for repairing a mitral valve annulus |
US6626930B1 (en) | 1999-10-21 | 2003-09-30 | Edwards Lifesciences Corporation | Minimally invasive mitral valve repair method and apparatus |
US20060095032A1 (en) | 1999-11-16 | 2006-05-04 | Jerome Jackson | Methods and systems for determining physiologic characteristics for treatment of the esophagus |
US6551310B1 (en) | 1999-11-16 | 2003-04-22 | Robert A. Ganz | System and method of treating abnormal tissue in the human esophagus |
US6573706B2 (en) | 1999-11-18 | 2003-06-03 | Intellijoint Systems Ltd. | Method and apparatus for distance based detection of wear and the like in joints |
US6306135B1 (en) | 1999-11-22 | 2001-10-23 | Alan G. Ellman | Forehead lift suction probe |
US6529756B1 (en) | 1999-11-22 | 2003-03-04 | Scimed Life Systems, Inc. | Apparatus for mapping and coagulating soft tissue in or around body orifices |
US6466817B1 (en) | 1999-11-24 | 2002-10-15 | Nuvasive, Inc. | Nerve proximity and status detection system and method |
US6197042B1 (en) | 2000-01-05 | 2001-03-06 | Medical Technology Group, Inc. | Vascular sheath with puncture site closure apparatus and methods of use |
US6391048B1 (en) | 2000-01-05 | 2002-05-21 | Integrated Vascular Systems, Inc. | Integrated vascular device with puncture site closure component and sealant and methods of use |
US6780197B2 (en) | 2000-01-05 | 2004-08-24 | Integrated Vascular Systems, Inc. | Apparatus and methods for delivering a vascular closure device to a body lumen |
US6699179B2 (en) | 2000-01-27 | 2004-03-02 | Scimed Life Systems, Inc. | Catheter introducer system for exploration of body cavities |
US6989028B2 (en) | 2000-01-31 | 2006-01-24 | Edwards Lifesciences Ag | Medical system and method for remodeling an extravascular tissue structure |
US6402781B1 (en) | 2000-01-31 | 2002-06-11 | Mitralife | Percutaneous mitral annuloplasty and cardiac reinforcement |
US7296577B2 (en) | 2000-01-31 | 2007-11-20 | Edwards Lifescience Ag | Transluminal mitral annuloplasty with active anchoring |
US6808505B2 (en) | 2000-02-01 | 2004-10-26 | Kadan Jeffrey S | Diagnostic needle arthroscopy and lavage system |
US6892091B1 (en) | 2000-02-18 | 2005-05-10 | Biosense, Inc. | Catheter, method and apparatus for generating an electrical map of a chamber of the heart |
EP1261294B1 (en) | 2000-03-10 | 2006-11-29 | Paracor Medical, Inc. | Expandable cardiac harness for treating congestive heart failure |
US6537198B1 (en) | 2000-03-21 | 2003-03-25 | Myocor, Inc. | Splint assembly for improving cardiac function in hearts, and method for implanting the splint assembly |
US6569198B1 (en) | 2000-03-31 | 2003-05-27 | Richard A. Wilson | Mitral or tricuspid valve annuloplasty prosthetic device |
ATE432664T1 (en) | 2000-05-03 | 2009-06-15 | Bard Inc C R | DEVICE FOR MULTI-DIMENSIONAL DISPLAY AND ABLATION IN ELECTROPHYSIOLOGICAL PROCEDURES |
EP1289415A4 (en) | 2000-05-18 | 2008-12-03 | Nuvasive Inc | Tissue discrimination and applications in medical procedures |
US6589208B2 (en) | 2000-06-20 | 2003-07-08 | Applied Medical Resources Corporation | Self-deploying catheter assembly |
US6569160B1 (en) | 2000-07-07 | 2003-05-27 | Biosense, Inc. | System and method for detecting electrode-tissue contact |
US7399271B2 (en) | 2004-01-09 | 2008-07-15 | Cardiokinetix, Inc. | Ventricular partitioning device |
US7862500B2 (en) | 2002-08-01 | 2011-01-04 | Cardiokinetix, Inc. | Multiple partitioning devices for heart treatment |
US20060030881A1 (en) | 2004-08-05 | 2006-02-09 | Cardiokinetix, Inc. | Ventricular partitioning device |
AU2000274774A1 (en) | 2000-09-01 | 2002-03-22 | Angiolink Corporation | Wound site management and wound closure device |
US8956407B2 (en) | 2000-09-20 | 2015-02-17 | Mvrx, Inc. | Methods for reshaping a heart valve annulus using a tensioning implant |
US6723038B1 (en) | 2000-10-06 | 2004-04-20 | Myocor, Inc. | Methods and devices for improving mitral valve function |
US6616684B1 (en) | 2000-10-06 | 2003-09-09 | Myocor, Inc. | Endovascular splinting devices and methods |
US6926669B1 (en) | 2000-10-10 | 2005-08-09 | Medtronic, Inc. | Heart wall ablation/mapping catheter and method |
US7273457B2 (en) | 2000-10-16 | 2007-09-25 | Remon Medical Technologies, Ltd. | Barometric pressure correction based on remote sources of information |
US20030149368A1 (en) | 2000-10-24 | 2003-08-07 | Hennemann Willard W. | Method and apparatus for locating and detecting vascular plaque via impedence and conductivity measurements, and for cryogenically passivating vascular plaque and inhibiting vascular plaque progression and rupture |
US6662034B2 (en) | 2000-11-15 | 2003-12-09 | Stereotaxis, Inc. | Magnetically guidable electrophysiology catheter |
GB0029158D0 (en) | 2000-11-29 | 2001-01-17 | Oxford Instr Plc | Catheter steering apparatus and method |
US7591826B2 (en) | 2000-12-28 | 2009-09-22 | Cardiac Dimensions, Inc. | Device implantable in the coronary sinus to provide mitral valve therapy |
US6997931B2 (en) | 2001-02-02 | 2006-02-14 | Lsi Solutions, Inc. | System for endoscopic suturing |
CA2437824C (en) | 2001-02-05 | 2008-09-23 | Viacor, Inc. | Apparatus and method for reducing mitral regurgitation |
US6702763B2 (en) | 2001-02-28 | 2004-03-09 | Chase Medical, L.P. | Sizing apparatus and method for use during ventricular restoration |
US6551312B2 (en) | 2001-03-09 | 2003-04-22 | Quantum Cor, Inc. | Wireless electrosurgical device and methods thereof |
CA2441886C (en) | 2001-03-23 | 2009-07-21 | Viacor, Incorporated | Method and apparatus for reducing mitral regurgitation |
US6743225B2 (en) | 2001-03-27 | 2004-06-01 | Uab Research Foundation | Electrophysiologic measure of endpoints for ablation lesions created in fibrillating substrates |
US7186264B2 (en) | 2001-03-29 | 2007-03-06 | Viacor, Inc. | Method and apparatus for improving mitral valve function |
US7025776B1 (en) | 2001-04-24 | 2006-04-11 | Advanced Catheter Engineering, Inc. | Arteriotomy closure devices and techniques |
US6989010B2 (en) | 2001-04-26 | 2006-01-24 | Medtronic, Inc. | Ablation system and method of use |
US20020188170A1 (en) | 2001-04-27 | 2002-12-12 | Santamore William P. | Prevention of myocardial infarction induced ventricular expansion and remodeling |
US7311731B2 (en) | 2001-04-27 | 2007-12-25 | Richard C. Satterfield | Prevention of myocardial infarction induced ventricular expansion and remodeling |
ATE418287T1 (en) * | 2001-04-27 | 2009-01-15 | Bard Inc C R | CATHETER FOR THREE-DIMENSIONAL IMAGING OF ELECTRICAL ACTIVITY IN BLOOD VESSELS |
ATE412372T1 (en) | 2001-05-06 | 2008-11-15 | Stereotaxis Inc | CATHETER ADVANCEMENT SYSTEM |
US6800090B2 (en) | 2001-05-14 | 2004-10-05 | Cardiac Dimensions, Inc. | Mitral valve therapy device, system and method |
EP1412023A4 (en) | 2001-07-16 | 2009-12-02 | Corassist Cardiovascular Ltd | In-vivo method and device for improving diastolic function of the left ventricle |
US6726716B2 (en) | 2001-08-24 | 2004-04-27 | Edwards Lifesciences Corporation | Self-molding annuloplasty ring |
US20060025800A1 (en) | 2001-09-05 | 2006-02-02 | Mitta Suresh | Method and device for surgical ventricular repair |
US20040243170A1 (en) | 2001-09-05 | 2004-12-02 | Mitta Suresh | Method and device for percutaneous surgical ventricular repair |
US7485088B2 (en) | 2001-09-05 | 2009-02-03 | Chase Medical L.P. | Method and device for percutaneous surgical ventricular repair |
US6761716B2 (en) | 2001-09-18 | 2004-07-13 | Cardiac Pacemakers, Inc. | System and method for assessing electrode-tissue contact and lesion quality during RF ablation by measurement of conduction time |
US7187964B2 (en) | 2001-09-27 | 2007-03-06 | Dirar S. Khoury | Cardiac catheter imaging system |
US6907297B2 (en) | 2001-09-28 | 2005-06-14 | Ethicon, Inc. | Expandable intracardiac return electrode and method of use |
US6635056B2 (en) | 2001-10-09 | 2003-10-21 | Cardiac Pacemakers, Inc. | RF ablation apparatus and method using amplitude control |
US7144363B2 (en) | 2001-10-16 | 2006-12-05 | Extensia Medical, Inc. | Systems for heart treatment |
US7052487B2 (en) | 2001-10-26 | 2006-05-30 | Cohn William E | Method and apparatus for reducing mitral regurgitation |
US6949122B2 (en) | 2001-11-01 | 2005-09-27 | Cardiac Dimensions, Inc. | Focused compression mitral valve device and method |
US6824562B2 (en) | 2002-05-08 | 2004-11-30 | Cardiac Dimensions, Inc. | Body lumen device anchor, device and assembly |
US6575971B2 (en) | 2001-11-15 | 2003-06-10 | Quantum Cor, Inc. | Cardiac valve leaflet stapler device and methods thereof |
US20050177180A1 (en) | 2001-11-28 | 2005-08-11 | Aptus Endosystems, Inc. | Devices, systems, and methods for supporting tissue and/or structures within a hollow body organ |
US6908478B2 (en) | 2001-12-05 | 2005-06-21 | Cardiac Dimensions, Inc. | Anchor and pull mitral valve device and method |
DE10161543B4 (en) | 2001-12-11 | 2004-02-19 | REITAN, Öyvind | Implant for the treatment of heart valve insufficiency |
US6892095B2 (en) | 2001-12-31 | 2005-05-10 | Cardiac Pacemakers, Inc. | Method and apparatus for monitoring left ventricular work or power |
US6960229B2 (en) | 2002-01-30 | 2005-11-01 | Cardiac Dimensions, Inc. | Device and method for modifying the shape of a body organ |
US7311705B2 (en) | 2002-02-05 | 2007-12-25 | Medtronic, Inc. | Catheter apparatus for treatment of heart arrhythmia |
DE10209986B4 (en) | 2002-03-07 | 2004-07-29 | Stm Medizintechnik Starnberg Gmbh | Endoscope shaft with a movable end section |
US6797001B2 (en) | 2002-03-11 | 2004-09-28 | Cardiac Dimensions, Inc. | Device, assembly and method for mitral valve repair |
US20030176810A1 (en) | 2002-03-15 | 2003-09-18 | Maahs Tracy D. | Thermography catheter |
ATE369084T1 (en) | 2002-03-15 | 2007-08-15 | Bard Inc C R | APPARATUS FOR CONTROLLING ABLATION ENERGY AND ELECTROGRAM RECORDING USING A MULTIPLE COMMON ELECTRODES IN AN ELECTROPHYSIOLOGY CATHETER |
US6704590B2 (en) | 2002-04-05 | 2004-03-09 | Cardiac Pacemakers, Inc. | Doppler guiding catheter using sensed blood turbulence levels |
AU2003245507A1 (en) | 2002-06-13 | 2003-12-31 | Guided Delivery Systems, Inc. | Devices and methods for heart valve repair |
AU2002326504A1 (en) | 2002-08-01 | 2004-02-23 | Septus Inc | A device for improving cardiac function |
KR101050626B1 (en) | 2002-08-29 | 2011-07-19 | 미트랄 솔루션스, 인크. | Implantation device for controlling the inner circumference of the anatomical orifice or lumen |
JP2006513809A (en) | 2002-09-20 | 2006-04-27 | フローメディカ,インコーポレイテッド | Apparatus and method for inserting an intra-aortic catheter through a delivery sheath |
CH696424A5 (en) | 2002-10-15 | 2007-06-15 | Alexander Von Weymarn Schaerli | Guide device, in particular for positioning catheters in a body passage. |
US7001383B2 (en) | 2002-10-21 | 2006-02-21 | Biosense, Inc. | Real-time monitoring and mapping of ablation lesion formation in the heart |
US20040082947A1 (en) | 2002-10-25 | 2004-04-29 | The Regents Of The University Of Michigan | Ablation catheters |
US7485143B2 (en) | 2002-11-15 | 2009-02-03 | Abbott Cardiovascular Systems Inc. | Apparatuses and methods for heart valve repair |
US7317950B2 (en) | 2002-11-16 | 2008-01-08 | The Regents Of The University Of California | Cardiac stimulation system with delivery of conductive agent |
US7068867B2 (en) | 2003-01-02 | 2006-06-27 | Glucon Medical Ltd | Ultrasonic position indicator |
US20060235314A1 (en) | 2003-01-31 | 2006-10-19 | Michele Migliuolo | Medical and surgical devices with an integrated sensor |
US20040158321A1 (en) | 2003-02-12 | 2004-08-12 | Cardiac Dimensions, Inc. | Method of implanting a mitral valve therapy device |
US20050107723A1 (en) | 2003-02-15 | 2005-05-19 | Wehman Thomas C. | Methods and apparatus for determining work performed by an individual from measured physiological parameters |
US7618435B2 (en) | 2003-03-04 | 2009-11-17 | Nmt Medical, Inc. | Magnetic attachment systems |
EP1608297A2 (en) | 2003-03-18 | 2005-12-28 | St. Jude Medical, Inc. | Body tissue remodeling apparatus |
SE0300854D0 (en) | 2003-03-26 | 2003-03-26 | Oeyvind Reitan | Device for the treatment of a heart valve insufficiency |
US20040193103A1 (en) | 2003-03-27 | 2004-09-30 | Arvik Enterprises, Llc | Apparatus and method for sclerosing the wall of a blood vessel |
EP1613387B1 (en) | 2003-03-28 | 2008-01-30 | C.R. Bard, Inc. | Braided mesh catheter |
US20050107871A1 (en) | 2003-03-30 | 2005-05-19 | Fidel Realyvasquez | Apparatus and methods for valve repair |
US7850654B2 (en) | 2003-04-24 | 2010-12-14 | St. Jude Medical Puerto Rico B.V. | Device and method for positioning a closure device |
US8052751B2 (en) | 2003-07-02 | 2011-11-08 | Flexcor, Inc. | Annuloplasty rings for repairing cardiac valves |
US7513867B2 (en) | 2003-07-16 | 2009-04-07 | Kardium, Inc. | Methods and devices for altering blood flow through the left ventricle |
EP1646332B1 (en) | 2003-07-18 | 2015-06-17 | Edwards Lifesciences AG | Remotely activated mitral annuloplasty system |
US20050054938A1 (en) | 2003-07-29 | 2005-03-10 | Wehman Thomas C. | Method and apparatus including altimeter and accelerometers for determining work performed by an individual |
US20060009755A1 (en) | 2003-09-04 | 2006-01-12 | Sra Jasbir S | Method and system for ablation of atrial fibrillation and other cardiac arrhythmias |
JP2007504910A (en) | 2003-09-12 | 2007-03-08 | ミノウ・メディカル・エルエルシイ | Selectable biased reshaping and / or excision of atherosclerotic material |
US8147486B2 (en) | 2003-09-22 | 2012-04-03 | St. Jude Medical, Atrial Fibrillation Division, Inc. | Medical device with flexible printed circuit |
KR100544957B1 (en) | 2003-09-23 | 2006-01-24 | 동부아남반도체 주식회사 | Method for fabricating Complementary Metal Oxide Semiconductor image sensor |
US20060184242A1 (en) | 2003-10-20 | 2006-08-17 | Samuel Lichtenstein | Method and apparatus for percutaneous reduction of anterior-posterior diameter of mitral valve |
US20050240249A1 (en) | 2003-10-28 | 2005-10-27 | Hosheng Tu | Methods for treating mitral valve annulus with biodegradable compression element |
US20050096047A1 (en) | 2003-10-31 | 2005-05-05 | Haberman William E. | Storing and presenting broadcast in mobile device |
US20050187620A1 (en) | 2003-11-14 | 2005-08-25 | Suresh Pai | Systems for heart treatment |
US7300435B2 (en) | 2003-11-21 | 2007-11-27 | Sherwood Services Ag | Automatic control system for an electrosurgical generator |
US7597705B2 (en) | 2003-12-03 | 2009-10-06 | St. Jude Medical Puerto Rico Llc | Vascular puncture seal anchor nest |
US7326236B2 (en) | 2003-12-23 | 2008-02-05 | Xtent, Inc. | Devices and methods for controlling and indicating the length of an interventional element |
US7431726B2 (en) | 2003-12-23 | 2008-10-07 | Mitralign, Inc. | Tissue fastening systems and methods utilizing magnetic guidance |
US20050192626A1 (en) | 2004-01-30 | 2005-09-01 | Nmt Medical, Inc. | Devices, systems, and methods for closure of cardiac openings |
DE102004008368B4 (en) | 2004-02-20 | 2006-05-24 | Siemens Ag | Catheter for performing and monitoring rotablation |
US7530980B2 (en) | 2004-04-14 | 2009-05-12 | Atricure, Inc | Bipolar transmural ablation method and apparatus |
CN1942145A (en) | 2004-04-19 | 2007-04-04 | 普罗里森姆股份有限公司 | Ablation devices with sensor structures |
US20050251116A1 (en) | 2004-05-05 | 2005-11-10 | Minnow Medical, Llc | Imaging and eccentric atherosclerotic material laser remodeling and/or ablation catheter |
WO2005112812A1 (en) | 2004-05-14 | 2005-12-01 | Medtronic, Inc. | Method and devices for treating atrial fibrillation by mass ablation |
WO2005112813A1 (en) * | 2004-05-17 | 2005-12-01 | C.R. Bard, Inc. | Method and apparatus for mapping and7or ablation of cardiac tissue |
US7633502B2 (en) | 2004-05-19 | 2009-12-15 | Boston Scientific Scimed, Inc. | System and method for graphically representing anatomical orifices and vessels |
US7276064B2 (en) | 2004-05-27 | 2007-10-02 | St. Jude Medical, Atrial Fibrillation Division, Inc. | Side-port sheath for catheter placement and translation |
US7087053B2 (en) | 2004-05-27 | 2006-08-08 | St. Jude Medical, Atrial Fibrillation Division, Inc. | Catheter with bifurcated, collapsible tip for sensing and ablating |
US7632265B2 (en) | 2004-05-28 | 2009-12-15 | St. Jude Medical, Atrial Fibrillation Division, Inc. | Radio frequency ablation servo catheter and method |
US7481808B2 (en) * | 2004-06-30 | 2009-01-27 | Ethicon, Inc. | Flexible electrode device and surgical apparatus equipped with same |
US7402134B2 (en) | 2004-07-15 | 2008-07-22 | Micardia Corporation | Magnetic devices and methods for reshaping heart anatomy |
US7285087B2 (en) | 2004-07-15 | 2007-10-23 | Micardia Corporation | Shape memory devices and methods for reshaping heart anatomy |
US9713730B2 (en) | 2004-09-10 | 2017-07-25 | Boston Scientific Scimed, Inc. | Apparatus and method for treatment of in-stent restenosis |
US20070083168A1 (en) | 2004-09-30 | 2007-04-12 | Whiting James S | Transmembrane access systems and methods |
US20060089637A1 (en) | 2004-10-14 | 2006-04-27 | Werneth Randell L | Ablation catheter |
US7865236B2 (en) | 2004-10-20 | 2011-01-04 | Nervonix, Inc. | Active electrode, bio-impedance based, tissue discrimination system and methods of use |
US9463012B2 (en) | 2004-10-26 | 2016-10-11 | P Tech, Llc | Apparatus for guiding and positioning an implant |
WO2006052905A2 (en) | 2004-11-08 | 2006-05-18 | Cardima, Inc. | System and method for performing ablation and other medical procedures using an electrode array with flex circuit |
US7496394B2 (en) | 2004-11-15 | 2009-02-24 | Biosense Webster, Inc. | Internal reference coronary sinus catheter |
US20060135970A1 (en) | 2004-11-15 | 2006-06-22 | Laurent Schaller | Catheter-based tissue remodeling devices and methods |
US7468062B2 (en) | 2004-11-24 | 2008-12-23 | Ablation Frontiers, Inc. | Atrial ablation catheter adapted for treatment of septal wall arrhythmogenic foci and method of use |
US20060199995A1 (en) | 2005-03-02 | 2006-09-07 | Venkataramana Vijay | Percutaneous cardiac ventricular geometry restoration device and treatment for heart failure |
EP2438877B1 (en) | 2005-03-28 | 2016-02-17 | Vessix Vascular, Inc. | Intraluminal electrical tissue characterization and tuned RF energy for selective treatment of atheroma and other target tissues |
US9204819B2 (en) | 2005-05-06 | 2015-12-08 | Vasonova, Inc. | Endovenous access and guidance system utilizing non-image based ultrasound |
AU2006262447A1 (en) | 2005-06-20 | 2007-01-04 | Medtronic Ablation Frontiers Llc | Ablation catheter |
US7618413B2 (en) | 2005-06-22 | 2009-11-17 | Boston Scientific Scimed, Inc. | Medical device control system |
US20060293725A1 (en) | 2005-06-24 | 2006-12-28 | Boris Rubinsky | Methods and systems for treating fatty tissue sites using electroporation |
US20060293698A1 (en) | 2005-06-28 | 2006-12-28 | Medtronic Vascular, Inc. | Retainer device for mitral valve leaflets |
US8834461B2 (en) | 2005-07-11 | 2014-09-16 | Medtronic Ablation Frontiers Llc | Low power tissue ablation system |
US20070027533A1 (en) | 2005-07-28 | 2007-02-01 | Medtronic Vascular, Inc. | Cardiac valve annulus restraining device |
US7877128B2 (en) | 2005-08-02 | 2011-01-25 | Biosense Webster, Inc. | Simulation of invasive procedures |
EP1913546A4 (en) | 2005-08-09 | 2009-12-16 | Gil Zwirn | High resolution radio frequency medical imaging and therapy system |
WO2007021976A2 (en) | 2005-08-11 | 2007-02-22 | The Cleveland Clinic Foundation | Apparatus and method for protecting nontarget tissue of a patient during electrocautery surgery |
US7819862B2 (en) | 2005-08-11 | 2010-10-26 | St. Jude Medical, Atrial Fibrillation Division, Inc. | Method for arrhythmias treatment based on spectral mapping during sinus rhythm |
US7740584B2 (en) | 2005-08-16 | 2010-06-22 | The General Electric Company | Method and system for mapping physiology information onto ultrasound-based anatomic structure |
US8657814B2 (en) | 2005-08-22 | 2014-02-25 | Medtronic Ablation Frontiers Llc | User interface for tissue ablation system |
ATE429194T1 (en) | 2005-11-16 | 2009-05-15 | Micardia Corp | MAGNETIC ATTACHMENT OF A CATHETER TO AN IMPLANT |
JP2007150473A (en) | 2005-11-24 | 2007-06-14 | Orion Denki Kk | Television broadcast receiver, intercom instrument, and intercom system |
US7749249B2 (en) | 2006-02-21 | 2010-07-06 | Kardium Inc. | Method and device for closing holes in tissue |
US8535304B2 (en) | 2006-03-31 | 2013-09-17 | Ablacor Medical Corporation | System and method for advancing, orienting, and immobilizing on internal body tissue a catheter or other therapeutic device |
US20070232858A1 (en) | 2006-03-31 | 2007-10-04 | Boston Scientific Scimed, Inc. | Steering system tension control devices |
US20070270688A1 (en) | 2006-05-19 | 2007-11-22 | Daniel Gelbart | Automatic atherectomy system |
US8118853B2 (en) | 2006-06-19 | 2012-02-21 | Cook Medical Technologies Llc | Prosthesis delivery and deployment device |
US8162836B2 (en) | 2006-06-23 | 2012-04-24 | Volcano Corporation | System and method for characterizing tissue based upon split spectrum analysis of backscattered ultrasound |
US10028783B2 (en) | 2006-06-28 | 2018-07-24 | Kardium Inc. | Apparatus and method for intra-cardiac mapping and ablation |
US9119633B2 (en) | 2006-06-28 | 2015-09-01 | Kardium Inc. | Apparatus and method for intra-cardiac mapping and ablation |
US8449605B2 (en) | 2006-06-28 | 2013-05-28 | Kardium Inc. | Method for anchoring a mitral valve |
US8920411B2 (en) | 2006-06-28 | 2014-12-30 | Kardium Inc. | Apparatus and method for intra-cardiac mapping and ablation |
US20080004645A1 (en) | 2006-06-30 | 2008-01-03 | Atheromed, Inc. | Atherectomy devices and methods |
US7837610B2 (en) | 2006-08-02 | 2010-11-23 | Kardium Inc. | System for improving diastolic dysfunction |
WO2008017080A2 (en) | 2006-08-03 | 2008-02-07 | Hansen Medical, Inc. | Systems for performing minimally invasive procedures |
EP2954868A1 (en) | 2006-10-18 | 2015-12-16 | Vessix Vascular, Inc. | Tuned rf energy and electrical tissue characterization for selective treatment of target tissues |
US8386057B2 (en) | 2006-11-17 | 2013-02-26 | Biotronik Crm Patent Ag | Electrode catheter for interventional use |
US8265745B2 (en) | 2006-12-29 | 2012-09-11 | St. Jude Medical, Atrial Fibillation Division, Inc. | Contact sensor and sheath exit sensor |
US20080161799A1 (en) | 2006-12-29 | 2008-07-03 | Todd Stangenes | Position independent catheter |
EP2114506A4 (en) | 2007-02-09 | 2014-11-05 | Taheri Laduca Llc | Apparatus and method for deploying an implantable device within the body |
US20090018617A1 (en) | 2007-04-30 | 2009-01-15 | Medtronic, Inc. | Parameter-directed shifting of electrical stimulation electrode combinations |
WO2008138009A1 (en) | 2007-05-08 | 2008-11-13 | C.R. Bard, Inc. | Rapid 3d mapping using multielectrode position data |
US8588885B2 (en) | 2007-05-09 | 2013-11-19 | St. Jude Medical, Atrial Fibrillation Division, Inc. | Bendable catheter arms having varied flexibility |
US8641704B2 (en) | 2007-05-11 | 2014-02-04 | Medtronic Ablation Frontiers Llc | Ablation therapy system and method for treating continuous atrial fibrillation |
US8160690B2 (en) | 2007-06-14 | 2012-04-17 | Hansen Medical, Inc. | System and method for determining electrode-tissue contact based on amplitude modulation of sensed signal |
US8784338B2 (en) | 2007-06-22 | 2014-07-22 | Covidien Lp | Electrical means to normalize ablational energy transmission to a luminal tissue surface of varying size |
US20090024138A1 (en) | 2007-07-18 | 2009-01-22 | Rafic Saleh | Surgical retrieval device radially deployable from collapsed position to a snare or cauterization loop |
AU2008279121B2 (en) | 2007-07-24 | 2013-09-19 | Boston Scientific Scimed, Inc. | System and method for controlling power based on impedance detection, such as controlling power to tissue treatment devices |
US8906011B2 (en) | 2007-11-16 | 2014-12-09 | Kardium Inc. | Medical device for use in bodily lumens, for example an atrium |
US8475449B2 (en) | 2007-12-10 | 2013-07-02 | Medtronic Ablation Frontiers Llc | RF energy delivery system and method |
US20090287120A1 (en) | 2007-12-18 | 2009-11-19 | Searete Llc, A Limited Liability Corporation Of The State Of Delaware | Circulatory monitoring systems and methods |
US8500731B2 (en) | 2007-12-21 | 2013-08-06 | St. Jude Medical, Atrial Fibrillation Division, Inc. | Adjustable length flexible polymer electrode catheter and method for ablation |
US8103327B2 (en) | 2007-12-28 | 2012-01-24 | Rhythmia Medical, Inc. | Cardiac mapping catheter |
WO2009089415A1 (en) | 2008-01-09 | 2009-07-16 | Mayo Foundation For Medical Education And Research | Mapping and ablation catheter system |
US8489172B2 (en) | 2008-01-25 | 2013-07-16 | Kardium Inc. | Liposuction system |
US8323203B2 (en) | 2008-02-28 | 2012-12-04 | Boston Scientific Scimed, Inc. | Imaging catheter |
US20090287304A1 (en) | 2008-05-13 | 2009-11-19 | Kardium Inc. | Medical Device for Constricting Tissue or a Bodily Orifice, for example a mitral valve |
US8562559B2 (en) | 2008-05-14 | 2013-10-22 | Onset Medical Corporation | Expandable iliac sheath and method of use |
EP2321001A1 (en) | 2008-05-15 | 2011-05-18 | Intelect Medical Inc. | Clinician programmer system interface for monitoring patient progress |
US8097926B2 (en) | 2008-10-07 | 2012-01-17 | Mc10, Inc. | Systems, methods, and devices having stretchable integrated circuitry for sensing and delivering therapy |
JP5726084B2 (en) * | 2008-11-11 | 2015-05-27 | シファメド・ホールディングス・エルエルシー | Thin electrode assembly |
US8834357B2 (en) | 2008-11-12 | 2014-09-16 | Boston Scientific Scimed, Inc. | Steering mechanism |
US9339331B2 (en) | 2008-12-29 | 2016-05-17 | St. Jude Medical, Atrial Fibrillation Division, Inc. | Non-contact electrode basket catheters with irrigation |
US8712550B2 (en) | 2008-12-30 | 2014-04-29 | Biosense Webster, Inc. | Catheter with multiple electrode assemblies for use at or near tubular regions of the heart |
US8858610B2 (en) | 2009-01-19 | 2014-10-14 | W. L. Gore & Associates, Inc. | Forced deployment sequence |
US10166067B2 (en) | 2009-02-12 | 2019-01-01 | St. Jude Medical, Atrial Fibrillation Division, Inc. | Ablation catheter and method for electically isolating cardiac tissue |
WO2010117806A1 (en) | 2009-03-31 | 2010-10-14 | Angiodynamics, Inc. | System and method for estimating a treatment region for a medical treatment device and for interactively planning a treatment of a patient |
US8326419B2 (en) | 2009-04-07 | 2012-12-04 | Pacesetter, Inc. | Therapy optimization via multi-dimensional mapping |
US9398862B2 (en) | 2009-04-23 | 2016-07-26 | Rhythmia Medical, Inc. | Multi-electrode mapping system |
US8103338B2 (en) | 2009-05-08 | 2012-01-24 | Rhythmia Medical, Inc. | Impedance based anatomy generation |
US8617228B2 (en) | 2009-10-23 | 2013-12-31 | Medtronic Cryocath Lp | Method and system for preventing nerve injury during a medical procedure |
EP2528497A1 (en) | 2010-01-29 | 2012-12-05 | C.R. Bard Inc. | Sacrificial catheter |
USD654588S1 (en) | 2010-04-22 | 2012-02-21 | Medical Device Technologies, Inc. | Snare |
EP2566565B1 (en) | 2010-05-05 | 2017-10-25 | Automated Medical Instruments Inc. | Anchored cardiac ablation catheter |
WO2011143468A2 (en) | 2010-05-12 | 2011-11-17 | Shifamed, Llc | Low profile electrode assembly |
US8644988B2 (en) | 2010-05-14 | 2014-02-04 | Intuitive Surgical Operations, Inc. | Drive force control in medical instrument providing position measurements |
DE102010026210A1 (en) * | 2010-07-06 | 2012-01-12 | Wolfgang Seidel | Method and device for coagulating body tissue and / or body vessels |
US9289606B2 (en) | 2010-09-02 | 2016-03-22 | St. Jude Medical, Atrial Fibrillation Division, Inc. | System for electroporation therapy |
USD660967S1 (en) | 2010-09-20 | 2012-05-29 | St. Jude Medical, Inc. | Surgical stent |
JP2013537835A (en) | 2010-09-28 | 2013-10-07 | ザ ボード オブ トラスティーズ オブ ザ リーランド スタンフォード ジュニア ユニバーシティ | Devices and methods for positioning electrodes in tissue |
WO2012050877A1 (en) | 2010-10-14 | 2012-04-19 | Corindus Inc. | Occlusion traversal robotic catheter system |
US9486273B2 (en) | 2011-01-21 | 2016-11-08 | Kardium Inc. | High-density electrode-based medical device system |
US9452016B2 (en) | 2011-01-21 | 2016-09-27 | Kardium Inc. | Catheter system |
EP2699150B1 (en) | 2011-04-22 | 2015-11-04 | Topera, Inc. | Basket style cardiac mapping catheter having a flexible electrode assembly for detection of cardiac rhythm disorders |
AU2012323882A1 (en) | 2011-10-15 | 2014-05-15 | Diros Technology Inc. | Method and apparatus for precisely controlling the size and shape of radiofrequency ablations |
DE102011085720A1 (en) | 2011-11-03 | 2013-05-08 | Günter Farin | HF surgical resection instrument with a device for controlling the opening width of a sling |
EP3138521B1 (en) | 2011-12-23 | 2019-05-29 | Vessix Vascular, Inc. | Apparatuses for remodeling tissue of or adjacent to a body passage |
US20130241929A1 (en) | 2012-03-13 | 2013-09-19 | Fady Massarwa | Selectably transparent electrophysiology map |
US9883908B2 (en) | 2012-05-02 | 2018-02-06 | The Charlotte-Mecklenburg Hospital Authority | Devices, systems, and methods for treating cardiac arrhythmias |
US9011423B2 (en) | 2012-05-21 | 2015-04-21 | Kardium, Inc. | Systems and methods for selecting, activating, or selecting and activating transducers |
US20130324910A1 (en) | 2012-05-31 | 2013-12-05 | Covidien Lp | Ablation device with drug delivery component and biopsy tissue-sampling component |
US9247993B2 (en) | 2012-08-07 | 2016-02-02 | Covidien, LP | Microwave ablation catheter and method of utilizing the same |
US10695125B2 (en) | 2013-01-31 | 2020-06-30 | Renal Dynamics Ltd. | Unipolar and/or bipolar ablation catheter |
US9474486B2 (en) | 2013-03-08 | 2016-10-25 | St. Jude Medical, Atrial Fibrillation Division, Inc. | Basket for a multi-electrode array catheter |
US9345540B2 (en) | 2013-03-15 | 2016-05-24 | Medtronic Ablation Frontiers Llc | Contact specific RF therapy balloon |
US9968783B2 (en) | 2013-04-04 | 2018-05-15 | Drexel University | Treatment for cardiac conductance abnormalities |
US20150066010A1 (en) | 2013-05-24 | 2015-03-05 | Cook Medical Technologies Llc | Expandable mesh platform for cardiac ablation |
US20150032103A1 (en) | 2013-07-29 | 2015-01-29 | Cook Medical Technologies Llc | Bipolar Ablation Device |
KR102262007B1 (en) | 2013-08-07 | 2021-06-08 | 베이리스 메디컬 컴퍼니 아이엔씨. | Methods and devices for puncturing tissue |
JP2016530008A (en) | 2013-08-28 | 2016-09-29 | ボストン サイエンティフィック サイムド,インコーポレイテッドBoston Scientific Scimed,Inc. | Predicting the prevalence of activation patterns in data segments during electrophysiological mapping |
USD717954S1 (en) | 2013-10-14 | 2014-11-18 | Mardil, Inc. | Heart treatment device |
EP3062695B1 (en) | 2013-10-31 | 2020-12-02 | Boston Scientific Scimed, Inc. | Medical device for high resolution mapping using localized matching |
US20150173828A1 (en) | 2013-12-23 | 2015-06-25 | Boaz Avitall | Small loop ablation catheter |
CN106572881B (en) | 2014-02-04 | 2019-07-26 | 波士顿科学国际有限公司 | Substitution of the heat sensor on bipolar electrode is placed |
EP3495018B1 (en) | 2014-05-07 | 2023-09-06 | Farapulse, Inc. | Apparatus for selective tissue ablation |
CA2946791C (en) | 2014-05-22 | 2023-09-19 | CARDIONOMIC, Inc. | Catheter and catheter system for electrical neuromodulation |
US20170281193A1 (en) | 2014-08-26 | 2017-10-05 | Mayo Foundation For Medical Education And Research | Closure and ablation of body viscera and conduits |
WO2016044687A1 (en) | 2014-09-18 | 2016-03-24 | University Of Utah Research Foundation | Cardiac mapping catheter |
JP2017529169A (en) | 2014-10-13 | 2017-10-05 | ボストン サイエンティフィック サイムド,インコーポレイテッドBoston Scientific Scimed,Inc. | Tissue diagnosis and treatment using mini-electrodes |
US20160143686A1 (en) | 2014-11-19 | 2016-05-26 | Stereotaxis, Inc. | Inter-electrode impedance for detecting tissue distance, orientation, contact and contact quality |
JP6514334B2 (en) | 2015-01-28 | 2019-05-15 | セント・ジュード・メディカル,カーディオロジー・ディヴィジョン,インコーポレイテッド | Thermal mapping catheter |
WO2016134264A1 (en) | 2015-02-20 | 2016-08-25 | Boston Scientific Scimed Inc. | Tissue contact sensing using a medical device |
US11844615B2 (en) | 2015-03-12 | 2023-12-19 | The Regents Of The University Of Michigan | Catheter and method to localize ectopic and reentrant activity in the heart |
WO2016168778A1 (en) | 2015-04-17 | 2016-10-20 | Boston Scientific Scimed Inc. | Tissue diagnosis and treatment using electrodes and mini-electrodes |
US10278616B2 (en) | 2015-05-12 | 2019-05-07 | Navix International Limited | Systems and methods for tracking an intrabody catheter |
US20170027465A1 (en) | 2015-07-31 | 2017-02-02 | University Of Utah Research Foundation | Systems and methods for characterizing the conductive properties of the heart |
WO2017041891A1 (en) | 2015-09-07 | 2017-03-16 | Ablacon Inc. | Elongated medical device suitable for intravascular insertion |
EP3346915A4 (en) | 2015-09-07 | 2018-10-10 | Ablacon Inc. | Systems, devices, components and methods for detecting the locations of sources of cardiac rhythm disorders in a patient's heart |
WO2017041889A2 (en) | 2015-09-07 | 2017-03-16 | Ablacon Inc. | Elongated medical device suitable for intravascular insertion and method of making an elongated medical device suitable for intravascular insertion |
US10524857B2 (en) | 2015-09-14 | 2020-01-07 | Biosense Webster (Israel) Ltd. | Dual node multiray electrode catheter |
ES2788643T3 (en) | 2015-09-30 | 2020-10-22 | Gem Srl | Electromagnetic Tissue Ablation Device |
US11007007B2 (en) | 2015-10-13 | 2021-05-18 | Biosense Webster (Israel) Ltd. | Self-centering multiray ablation catheter |
WO2017070252A1 (en) | 2015-10-20 | 2017-04-27 | The University Of Melbourne | Medical device for sensing and or stimulating tissue |
US20170156791A1 (en) | 2015-12-08 | 2017-06-08 | Biosense Webster (Israel) Ltd. | Ablating and sensing electrodes |
US10362953B2 (en) | 2015-12-11 | 2019-07-30 | Biosense Webster (Israel) Ltd. | Electrode array catheter with interconnected framework |
JP6630836B2 (en) | 2016-02-02 | 2020-01-15 | イノブレイティブ デザインズ, インコーポレイテッド | Cavity tissue ablation system |
US10507057B2 (en) | 2016-05-02 | 2019-12-17 | Affera, Inc. | Catheter sensing and irrigating |
US20180055564A1 (en) | 2016-08-25 | 2018-03-01 | Boston Scientific Scimed, Inc. | Systems and methods for nerve denervation to relieve pulmonary disease symptoms |
US10813590B2 (en) | 2016-10-28 | 2020-10-27 | Ablacon Inc. | Electrophysiological mapping catheter |
US11559349B2 (en) | 2016-09-12 | 2023-01-24 | Biosense Webster (Israel) Ltd. | Ablation catheter with a flexible printed circuit board |
CN109788983B (en) | 2016-10-04 | 2022-04-19 | 圣犹达医疗用品心脏病学部门有限公司 | Ablation catheter with flexible electronic circuit |
CN109843164A (en) | 2016-10-17 | 2019-06-04 | 艾奇恩健康 | For treating the devices, systems, and methods of arrhythmia cordis |
WO2018081225A1 (en) | 2016-10-27 | 2018-05-03 | Cardiac Pacemakers, Inc. | Implantable medical device delivery system with integrated sensor |
WO2018146613A2 (en) | 2017-02-09 | 2018-08-16 | Navix International Limited | Intrabody probe navigation by electrical self-sensing |
EP3576612A4 (en) | 2017-02-01 | 2020-12-23 | The George Washington University | High resolution multi-function and conformal electronics device for diagnosis and treatment of cardiac arrhythmias |
EP3375365A3 (en) | 2017-03-17 | 2018-12-19 | Ablacon Inc. | Systems, devices, components and methods for detecting the locations of sources of cardiac rythm disorders in a patient's heart and classifying same |
-
2013
- 2013-03-11 US US13/793,076 patent/US9486273B2/en active Active
- 2013-03-11 US US13/793,213 patent/US9480525B2/en active Active
- 2013-05-06 EP EP13793216.6A patent/EP2825121B1/en active Active
- 2013-05-06 EP EP19215957.2A patent/EP3649975B1/en active Active
- 2013-05-06 WO PCT/CA2013/050350 patent/WO2013173917A1/en active Application Filing
- 2013-05-06 EP EP24153949.3A patent/EP4335359A2/en active Pending
- 2013-05-06 IN IN9902DEN2014 patent/IN2014DN09902A/en unknown
-
2019
- 2019-10-17 US US16/655,775 patent/US11896295B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5327889A (en) * | 1992-12-01 | 1994-07-12 | Cardiac Pathways Corporation | Mapping and ablation catheter with individually deployable arms and method |
WO1997017892A1 (en) | 1995-11-13 | 1997-05-22 | Cardiac Pathways Corporation | Endocardial mapping and/or ablation catheter probe and method |
WO2012100185A2 (en) * | 2011-01-21 | 2012-07-26 | Kardium Inc. | Enhanced medical device for use in bodily cavities, for example an atrium |
WO2012100184A2 (en) | 2011-01-21 | 2012-07-26 | Kardium Inc. | Enhanced medical device for use in bodily cavities, for example an atrium |
Cited By (56)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11399890B2 (en) | 2006-06-28 | 2022-08-02 | Kardium Inc. | Apparatus and method for intra-cardiac mapping and ablation |
US8920411B2 (en) | 2006-06-28 | 2014-12-30 | Kardium Inc. | Apparatus and method for intra-cardiac mapping and ablation |
US10820941B2 (en) | 2006-06-28 | 2020-11-03 | Kardium Inc. | Apparatus and method for intra-cardiac mapping and ablation |
US9119633B2 (en) | 2006-06-28 | 2015-09-01 | Kardium Inc. | Apparatus and method for intra-cardiac mapping and ablation |
US9119634B2 (en) | 2006-06-28 | 2015-09-01 | Kardium Inc. | Apparatus and method for intra-cardiac mapping and ablation |
US11389232B2 (en) | 2006-06-28 | 2022-07-19 | Kardium Inc. | Apparatus and method for intra-cardiac mapping and ablation |
US11389231B2 (en) | 2006-06-28 | 2022-07-19 | Kardium Inc. | Apparatus and method for intra-cardiac mapping and ablation |
US10828094B2 (en) | 2006-06-28 | 2020-11-10 | Kardium Inc. | Apparatus and method for intra-cardiac mapping and ablation |
US10828093B2 (en) | 2006-06-28 | 2020-11-10 | Kardium Inc. | Apparatus and method for intra-cardiac mapping and ablation |
US10028783B2 (en) | 2006-06-28 | 2018-07-24 | Kardium Inc. | Apparatus and method for intra-cardiac mapping and ablation |
US9987084B2 (en) | 2006-06-28 | 2018-06-05 | Kardium Inc. | Apparatus and method for intra-cardiac mapping and ablation |
US9987083B2 (en) | 2006-06-28 | 2018-06-05 | Kardium Inc. | Apparatus and method for intra-cardiac mapping and ablation |
US9603661B2 (en) | 2007-11-16 | 2017-03-28 | Kardium Inc. | Medical device for use in bodily lumens, for example an atrium |
US8906011B2 (en) | 2007-11-16 | 2014-12-09 | Kardium Inc. | Medical device for use in bodily lumens, for example an atrium |
US8932287B2 (en) | 2007-11-16 | 2015-01-13 | Kardium Inc. | Medical device for use in bodily lumens, for example an atrium |
US11801091B2 (en) | 2007-11-16 | 2023-10-31 | Kardium Inc. | Medical device for use in bodily lumens, for example an atrium |
US11751940B2 (en) | 2007-11-16 | 2023-09-12 | Kardium Inc. | Medical device for use in bodily lumens, for example an atrium |
US9750569B2 (en) | 2007-11-16 | 2017-09-05 | Kardium Inc. | Medical device for use in bodily lumens, for example an atrium |
US9820810B2 (en) | 2007-11-16 | 2017-11-21 | Kardium Inc. | Medical device for use in bodily lumens, for example an atrium |
US9839474B2 (en) | 2007-11-16 | 2017-12-12 | Kardium Inc. | Medical device for use in bodily lumens, for example an atrium |
US9877779B2 (en) | 2007-11-16 | 2018-01-30 | Kardium Inc. | Medical device for use in bodily lumens, for example an atrium |
US11633231B2 (en) | 2007-11-16 | 2023-04-25 | Kardium Inc. | Medical device for use in bodily lumens, for example an atrium |
US11432874B2 (en) | 2007-11-16 | 2022-09-06 | Kardium Inc. | Medical device for use in bodily lumens, for example an atrium |
US11413091B2 (en) | 2007-11-16 | 2022-08-16 | Kardium Inc. | Medical device for use in bodily lumens, for example an atrium |
US9585717B2 (en) | 2007-11-16 | 2017-03-07 | Kardium Inc. | Medical device for use in bodily lumens, for example an atrium |
US10499986B2 (en) | 2007-11-16 | 2019-12-10 | Kardium Inc. | Medical device for use in bodily lumens, for example an atrium |
US11331141B2 (en) | 2007-11-16 | 2022-05-17 | Kardium Inc. | Medical device for use in bodily lumens, for example an atrium |
US11304751B2 (en) | 2007-11-16 | 2022-04-19 | Kardium Inc. | Medical device for use in bodily lumens, for example an atrium |
US11076913B2 (en) | 2007-11-16 | 2021-08-03 | Kardium Inc. | Medical device for use in bodily lumens, for example an atrium |
US10828097B2 (en) | 2007-11-16 | 2020-11-10 | Kardium Inc. | Medical device for use in bodily lumens, for example an atrium |
US10828095B2 (en) | 2007-11-16 | 2020-11-10 | Kardium Inc. | Medical device for use in bodily lumens, for example an atrium |
US10828096B2 (en) | 2007-11-16 | 2020-11-10 | Kardium Inc. | Medical device for use in bodily lumens, for example an atrium |
US10828098B2 (en) | 2007-11-16 | 2020-11-10 | Kardium Inc. | Medical device for use in bodily lumens, for example an atrium |
US10485608B2 (en) | 2011-01-21 | 2019-11-26 | Kardium Inc. | Catheter system |
US9526573B2 (en) | 2011-01-21 | 2016-12-27 | Kardium Inc. | Enhanced medical device for use in bodily cavities, for example an atrium |
US9492227B2 (en) | 2011-01-21 | 2016-11-15 | Kardium Inc. | Enhanced medical device for use in bodily cavities, for example an atrium |
US11298173B2 (en) | 2011-01-21 | 2022-04-12 | Kardium Inc. | Enhanced medical device for use in bodily cavities, for example an atrium |
US9492228B2 (en) | 2011-01-21 | 2016-11-15 | Kardium Inc. | Enhanced medical device for use in bodily cavities, for example an atrium |
US11896295B2 (en) | 2011-01-21 | 2024-02-13 | Kardium Inc. | High-density electrode-based medical device system |
US11350989B2 (en) | 2011-01-21 | 2022-06-07 | Kardium Inc. | Catheter system |
US9480525B2 (en) | 2011-01-21 | 2016-11-01 | Kardium, Inc. | High-density electrode-based medical device system |
US9452016B2 (en) | 2011-01-21 | 2016-09-27 | Kardium Inc. | Catheter system |
US9675401B2 (en) | 2011-01-21 | 2017-06-13 | Kardium Inc. | Enhanced medical device for use in bodily cavities, for example an atrium |
US11259867B2 (en) | 2011-01-21 | 2022-03-01 | Kardium Inc. | High-density electrode-based medical device system |
US9486273B2 (en) | 2011-01-21 | 2016-11-08 | Kardium Inc. | High-density electrode-based medical device system |
US11399881B2 (en) | 2011-01-21 | 2022-08-02 | Kardium Inc. | Enhanced medical device for use in bodily cavities, for example an atrium |
US11596463B2 (en) | 2011-01-21 | 2023-03-07 | Kardium Inc. | Enhanced medical device for use in bodily cavities, for example an atrium |
US11607261B2 (en) | 2011-01-21 | 2023-03-21 | Kardium Inc. | Enhanced medical device for use in bodily cavities, for example an atrium |
USD777926S1 (en) | 2012-01-20 | 2017-01-31 | Kardium Inc. | Intra-cardiac procedure device |
USD777925S1 (en) | 2012-01-20 | 2017-01-31 | Kardium Inc. | Intra-cardiac procedure device |
WO2017079459A3 (en) * | 2015-11-04 | 2017-06-15 | Boston Scientific Scimed, Inc. | Medical device and related methods |
US10675462B2 (en) | 2015-11-04 | 2020-06-09 | Boston Scientific Scimed, Inc. | Medical device and related methods |
US11878095B2 (en) | 2018-12-11 | 2024-01-23 | Biosense Webster (Israel) Ltd. | Balloon catheter with high articulation |
US11850051B2 (en) | 2019-04-30 | 2023-12-26 | Biosense Webster (Israel) Ltd. | Mapping grid with high density electrode array |
US11918341B2 (en) | 2019-12-20 | 2024-03-05 | Biosense Webster (Israel) Ltd. | Selective graphical presentation of electrophysiological parameters |
US11918383B2 (en) | 2020-12-21 | 2024-03-05 | Biosense Webster (Israel) Ltd. | Visualizing performance of catheter electrodes |
Also Published As
Publication number | Publication date |
---|---|
US20200046425A1 (en) | 2020-02-13 |
EP4335359A2 (en) | 2024-03-13 |
US9480525B2 (en) | 2016-11-01 |
EP3649975A1 (en) | 2020-05-13 |
EP2825121A1 (en) | 2015-01-21 |
EP3649975B1 (en) | 2024-02-28 |
US20130197513A1 (en) | 2013-08-01 |
EP2825121B1 (en) | 2020-01-08 |
EP2825121A4 (en) | 2015-12-02 |
US20130190587A1 (en) | 2013-07-25 |
US11896295B2 (en) | 2024-02-13 |
US9486273B2 (en) | 2016-11-08 |
IN2014DN09902A (en) | 2015-08-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US11896295B2 (en) | High-density electrode-based medical device system | |
US11633238B2 (en) | Systems and methods for selecting, activating, or selecting and activating transducers | |
US10681805B2 (en) | Flexible circuit structures including connection arrangement connected to load measurement lead | |
US11259867B2 (en) | High-density electrode-based medical device system | |
US11026637B2 (en) | Systems and methods for selecting, activating, or selecting and activating transducers | |
US11583331B2 (en) | Systems and methods for activating transducers | |
US10368936B2 (en) | Systems and methods for selecting, activating, or selecting and activating transducers | |
CA2948821A1 (en) | Medical system including elongate members with non-uniform spacing therebetween in expanded configuration |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 13793216 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2013793216 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |