US20120061446A1 - Method for Treating Tissue With an Articulated Surgical Instrument - Google Patents
Method for Treating Tissue With an Articulated Surgical Instrument Download PDFInfo
- Publication number
- US20120061446A1 US20120061446A1 US13/048,674 US201113048674A US2012061446A1 US 20120061446 A1 US20120061446 A1 US 20120061446A1 US 201113048674 A US201113048674 A US 201113048674A US 2012061446 A1 US2012061446 A1 US 2012061446A1
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- United States
- Prior art keywords
- end effector
- shaft
- handle
- surgical method
- patient
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000000034 method Methods 0.000 title claims abstract description 31
- 239000012636 effector Substances 0.000 claims abstract description 125
- 238000005452 bending Methods 0.000 claims description 5
- 230000007935 neutral effect Effects 0.000 claims description 3
- 230000033001 locomotion Effects 0.000 description 14
- 210000004204 blood vessel Anatomy 0.000 description 8
- 238000001356 surgical procedure Methods 0.000 description 8
- 230000007246 mechanism Effects 0.000 description 7
- 210000001519 tissue Anatomy 0.000 description 7
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000002788 crimping Methods 0.000 description 3
- 238000002324 minimally invasive surgery Methods 0.000 description 3
- 230000000994 depressogenic effect Effects 0.000 description 2
- 238000012978 minimally invasive surgical procedure Methods 0.000 description 2
- 210000003484 anatomy Anatomy 0.000 description 1
- 210000000013 bile duct Anatomy 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001574 biopsy Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002496 gastric effect Effects 0.000 description 1
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- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003739 neck Anatomy 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 230000037390 scarring Effects 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 210000003813 thumb Anatomy 0.000 description 1
- 230000000699 topical effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
- A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
- A61B17/07207—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously the staples being applied sequentially
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/0046—Surgical instruments, devices or methods, e.g. tourniquets with a releasable handle; with handle and operating part separable
- A61B2017/00473—Distal part, e.g. tip or head
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/28—Surgical forceps
- A61B17/29—Forceps for use in minimally invasive surgery
- A61B2017/2901—Details of shaft
- A61B2017/2908—Multiple segments connected by articulations
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/28—Surgical forceps
- A61B17/29—Forceps for use in minimally invasive surgery
- A61B2017/2926—Details of heads or jaws
- A61B2017/2927—Details of heads or jaws the angular position of the head being adjustable with respect to the shaft
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/28—Surgical forceps
- A61B17/29—Forceps for use in minimally invasive surgery
- A61B2017/2926—Details of heads or jaws
- A61B2017/2927—Details of heads or jaws the angular position of the head being adjustable with respect to the shaft
- A61B2017/2929—Details of heads or jaws the angular position of the head being adjustable with respect to the shaft with a head rotatable about the longitudinal axis of the shaft
Definitions
- the invention generally relates to an articulated surgical instrument, and more specifically to an instrument that may be used to articulate a surgical stapler or endocutter.
- Minimally invasive surgery is performed through small incisions in the body, into which trocar ports may or may not be placed.
- One or more surgical instruments are inserted through each incision in order to perform the surgical procedure.
- FIG. 1 is a perspective view of a an exemplary surgical instrument.
- FIG. 2 is a detail perspective view of an exemplary articulated region on a shaft of the surgical instrument of FIG. 1 .
- FIG. 3 is a detail perspective view of a second exemplary articulated region on a shaft of the surgical instrument of FIG. 1 .
- FIG. 4 is a side cutaway view of a handle of the surgical instrument of FIG. 1 .
- FIG. 5 is a detail side cutaway view of the distal end of the handle of the surgical instrument of FIG. 1 .
- FIG. 6 is a top cross-section view of a handle of the surgical instrument of FIG. 1 .
- FIG. 7 is a detail cutaway view of a portion of the proximal end of the handle of the surgical instrument of FIG. 1 .
- FIG. 8 is a top cross-section view of the proximal end of the handle of the surgical instrument of FIG. 1 .
- FIG. 9 is a side cutaway view of the proximal end of the handle of the surgical instrument of FIG. 1 .
- FIG. 10 is a perspective view of an exemplary end effector of the surgical instrument of FIG. 1 .
- FIG. 11 is a perspective view of an exemplary feeder belt with two rows of staples frangibly connected thereto.
- a surgical instrument 1 includes a handle 2 attached to a shaft 4 , which in turn is attached to an end effector 6 .
- the surgical instrument 1 may be an endocutter, a linear cutter, a stapler, or any other suitable surgical instrument.
- the end effector 6 may be one or more separate components that are connected to the shaft 4 , or may be fabricated integrally with the distal end of the shaft 4 . As discussed in greater detail below, the end effector 6 may be fixed to the shaft 4 , or may be separable from the shaft 4 such that a fresh end effector 6 may be attached to the shaft 4 after one or more actuations of the surgical instrument.
- the end effector 6 and at least the distal end of the shaft 4 may be sized to pass through an incision or through a standard trocar port that may be placed in the patient.
- the end effector 6 may be sized to pass through a trocar port, having an opening between 5-10 millimeters in diameter.
- the surgical instrument 1 may be used in the course of conventional open surgery, where a trocar port is not used.
- the end effector 6 may include a staple holder 8 connected to an anvil 10 , and may be movable between an open configuration and a closed configuration. In the closed configuration, tissue may be clamped between the staple holder 8 and the anvil 10 . Alternately, the end effector 6 may omit the anvil 10 .
- the end effector 6 need not include a staple holder 8 or anvil 10 , and the end effector 6 may instead be a different surgical instrument, such as but not limited to a bipolar cutter, a biopsy device, a grasper, or a stabilizer.
- the shaft 4 advantageously has a tubular shape with a lumen defined therein.
- the shaft 4 may include a cutaway, trough or other feature (not shown) to allow a guidewire (if any) or other positioning aid that may be used in the surgical procedure to remain in place during actuation of the surgical instrument 1 .
- the shaft 4 may be flexible or rigid, in whole or in part.
- the shaft 4 may be articulated in at least one location, if desired. Referring to FIG. 2 , as one example, the shaft 4 may be generally rigid, with the exception of a flexible articulated region 12 that connects two generally-rigid segments of the shaft 4 .
- a plurality of slots 14 may be located in the shaft 4 in the articulated region 12 .
- the slots 14 may extend completely through the wall of the shaft 4 from the outer surface of the shaft to the lumen in the shaft 4 .
- the slots 14 may be arranged in any suitable manner.
- each slot 14 may extend along greater than 180 degrees of circumference of the shaft 4 , between two vertices 15 . Proceeding proximally along the shaft 4 , at least two slots 14 may be generally arranged in an alternating manner. That is, one slot 14 may open generally in one direction away from the longitudinal centerline of the shaft 4 , and the slot 14 proximal to that may open generally in the opposite direction away from the longitudinal centerline of the shaft 4 .
- the vertices 15 of a slot opening may be located laterally to the right of the vertices of a longitudinally adjacent slot opening laterally to the right.
- at least two slots 14 extend along greater than 180 degrees of circumference of the shaft 4
- no line on the surface of the shaft 4 that is parallel to the longitudinal centerline of the shaft 4 can extend completely through the articulating region 12 without encountering a slot 14 .
- every line on the surface of the shaft 4 that is parallel to the longitudinal centerline of the shaft 4 crosses at least slot 14 .
- the slots 14 may be oriented and arranged relative to one another to provide for lateral articulation of the shaft 4 .
- the slots 14 may be oriented and arranged such that the portion of the shaft 4 distal to the articulating region 12 is rotatable in a single plane, laterally left and right. Alternately, the slots 14 may be oriented and arranged such that the portion of the shaft 4 distal to the articulating region 12 is rotatable in a single plane in a direction other than laterally left and right. Alternately, the slots 14 may be oriented and arranged such that the portion of the shaft 4 distal to the articulating region 12 is rotatable in more than a single plane.
- At least one slot 14 may be angled. That is, extending outward from a vertex 15 of the slot 14 , the walls of the slot may be angled relative to one another rather than parallel. Such an angle facilitates bending of the articulated region 12 .
- at least one slot 14 has an angle of substantially two degrees between its walls. However, the angle may be different, or the walls may instead be substantially parallel to one another. The width and angle of each slot 14 may be selected to affect the total amount of travel of the articulating section.
- the articulating section 12 is bendable such that the portion of the shaft 4 distal to the articulating section 12 is movable through substantially ninety degrees relative to the portion of the shaft 4 proximal to the articulating section, where 45 degrees of such movement is on either side of the longitudinal centerline of the shaft 4 .
- the articulating section 12 may be configured to allow a different amount of movement, either greater than or less than ninety degrees.
- the articulating section 12 may be configured to allow movement in more than one plane, in either the same or different amounts in either plane.
- the articulating section 12 may be configured to allow asymmetrical articulation, wherein the distal end of the shaft 4 distal to the articulating section may be movable through a first angle on one side of the longitudinal centerline of the shaft 4 that is greater than a second angle on the other side of the longitudinal centerline of the shaft 4 .
- the slots 14 may be configured similarly to those described above with regard to FIG. 2 . However, at least one of the slots 14 may extend along less than 180 degrees of circumference of the shaft 4 . If all of the slots 14 do so, then the slots 14 may be arranged such that a line on the surface of the shaft 4 that is parallel to the longitudinal centerline of the shaft 4 can extend completely through the articulating region 12 without encountering a slot 14 .
- One or more slots 14 may be connected to a longitudinal aperture 17 at a vertex 15 thereof, such that the slot 14 may have a T-shaped appearance if viewed from above. The presence of the longitudinal aperture 17 , and its length, provide for greater flexibility of the articulated region 12 . The longer the longitudinal apertures 17 , the more flexible the articulated region 12 .
- the handle 2 may be attached to the proximal end of the shaft 4 , or any other suitable portion of the shaft 4 .
- the shaft 4 may be fabricated integrally with the handle 2 . Alternately, the shaft 4 and the handle 2 may be two separate items that are connected together in any suitable manner.
- the handle 2 may include any mechanism, mechanisms, structure or structures that are suitably configured to actuate the end effector 6 .
- the handle 2 may also include a source of stored energy for actuating the end effector 6 .
- the source of stored energy may be mechanical (such as a spring), electrical (such as a battery), pneumatic (such as a cylinder of pressurized gas) or any other suitable source of stored energy.
- the source of stored energy, its regulation, and its use in actuating the end effector 6 may be as described in the U.S. patent application Ser. No. 11/054,265, filed on Feb. 9, 2005, which is herein incorporated by reference in its entirety.
- the handle 2 may instead, or also, include a connector or connectors suitable for receiving stored energy from an external source, such as a hose connected to a hospital utility source of pressurized gas or of vacuum, or an electrical cord connectable to a power source.
- a cable 64 extends through the lumen of the shaft 4 proximally into the housing 20 of the handle 2 .
- the cable 64 wraps around an rotary articulator 62 and then extends distally back out of the housing 20 into the lumen of the shaft 4 .
- the rotary articulator 62 may be spherical, partially spherical, spheroidal, cylindrical, or may have any other suitable shape.
- the cable 64 may be fixed to the rotary articulator 62 , such as by a cylinder 66 , tab, or other wider structure that is fixed to the cable 64 .
- the cylinder 66 is held by a corresponding detent in the rotary articulator 62 , such as in its proximal end.
- the cylinder 66 may be fixed to the rotary articulator 62 , such as by welding, adhesive, crimping, pressure fitting, or any other or additional structure, mechanism or method.
- the cable 64 may be fixed directly to the rotary articulator 62 , such as by welding, adhesive, crimping, pressure fitting, or any other or additional structure, mechanism or method.
- the cable 64 may be wrapped around the rotary articulator 62 once, or more than once.
- the cable 64 is wrapped around the proximal end of the rotary articulator 62 such that the cable 64 is routed proximally from the shaft 4 along one side of the rotary articulator 62 , around the proximal end of the rotary articulator 62 , then distally along the other side of the rotary articulator 62 to the shaft 4 .
- the cable 64 is routed through the handle 2 such that it is capable of moving substantially freely.
- the clamp controller 32 may include two or more ramps 112 or apertures that receive the cable 64 and allow the cable 64 to smoothly enter the lumen of the shaft 4 .
- the clamp controller 32 may also include a tunnel 114 or opening extending longitudinally therethrough to allow the actuation cable 110 to extend therethrough into the lumen of the shaft 4 .
- the proximal end of the end effector 6 may include a bulkhead 90 in which one or more apertures 94 are defined.
- both ends of the cable 64 extend through separate apertures 94 , where those apertures 94 are laterally spaced apart from one another.
- those two apertures 94 through which the cable 64 extends and the longitudinal centerline of the shaft 4 are aligned along a straight line.
- the ends of the cable 64 may be knotted, fixed to structures wider than the diameter of the aperture 94 , or otherwise secured distal to the bulkhead 90 .
- the cable 64 may be under tension when the ends of the cable 64 are secured relative to the bulkhead 90 .
- one or more of the apertures 94 may be omitted, and at least one end of the cable 64 is fixed directly to the bulkhead, such as by welding, adhesive, crimping, pressure fitting, or any other or additional structure, mechanism or method.
- the bulkhead 90 may be fixed to the shaft 4 , rather than the end effector 6 .
- the bulkhead 90 may be any rigid structure substantially fixed relative to the distal end of the shaft 4 .
- the rotary articulator 62 may be held in a cradle 72 within the housing of the handle 2 .
- the cradle 72 holds the rotary articulator 62 in a substantially fixed longitudinal position within the handle 2 .
- the proximal end of the cradle 72 may be shaped substantially the same as the proximal surface of the rotary articulator 62 , such that the rotary articulator 62 can rotate smoothly in the cradle 72 .
- One or more pins 100 , lips or tabs may extend inward from the distal end of the cradle 72 to retain the rotary articulator 62 within the cradle 72 while still allowing the rotary articulator 62 to rotate.
- the cradle 72 is not used, and the housing 20 or other component of the handle 2 holds the rotary articulator 62 in a substantially fixed longitudinal position within the handle 2 .
- at least one axle 68 may extend from the cradle 72 into a corresponding slot 70 defined in the rotary articulator 62 .
- the axle or axles 68 define an axis about which the rotary articulator 62 is rotatable.
- the axles 68 are not utilized, and the rotary articulator 62 is otherwise constrained to rotate about one or more axes.
- an articulation control 60 may be connected to the rotary articulator 62 , and extend through an opening 74 in the housing 20 as well as an opening 88 in the proximal end of the cradle 72 .
- the articulation control 60 may be fixed to the rotary articulator 62 , and may be connected to it in any suitable manner, such as by fasteners, adhesive, welding, or any other suitable structure, mechanism or method.
- the articulation control 60 is configured such that motion of the articulation control 60 from side to side causes rotation of the rotary articulator 62 about an axis, such as defined by one or more of the axles 68 .
- a tube 81 may extend from the articulation control 60 toward the rotary articulator, and a pin 80 may be positioned partially in the lumen of and extending proximally from that tube 81 .
- the pin 80 may be slidable within the lumen of the tube 81 .
- a clip 82 is fixed to the pin 80 , and extends distally into the tube 81 .
- the clip 82 may includes two legs 84 biased outward relative to the longitudinal centerline of the tube 81 .
- the legs 84 may be generally symmetrical and generally thin and planar, or may be otherwise configured.
- the legs 84 may be spaced apart from one another.
- the opening 88 in the proximal end of the cradle 72 may have a plurality of teeth 86 defined along its upper and/or lower edges.
- the clip 82 is configured to slide between adjacent teeth 86 when the pin 80 moves distally.
- the pin 80 may be biased distally, or may be configured to remain placed where the user sets it.
- the legs 84 are positioned proximal to the proximal edges of the teeth 86 , such that the articulation control 60 may be rotated left or right in order to rotate the rotary articulator 62 .
- the clip 82 optionally may be shaped such that when the pin 80 is moved proximally, the outer edges of the legs 84 encounter the distal end of the tube 81 and are colleted down by that contact. Such motion may facilitate free motion of the rotary articulator 62 .
- the pin 80 When the pin 80 is moved distally, it enters a space between two teeth 86 , thereby preventing rotation of the rotary articulator 62 and fixing the rotary articulator 62 in place.
- the teeth 86 may be angled such that if a leg 84 encounter a space between teeth 86 while moving distally, the leg 84 is directed to the left or right into the space between adjacent teeth 86 .
- the spacing between the teeth 86 defines the number of discrete positions at which the rotary articulator 62 can be selectively fixed.
- the teeth 86 may be omitted, and any other suitable mechanism may be used to selectively fix the rotary articulator 62 , either in one of a number of discrete positions, or along an infinitely variable continuum.
- the rotary articulator 62 may provide for articulation about one axis.
- a rototube 50 may provide for rotation about a second axis.
- the rotary articulator 62 is not used, and the rototube 50 provides rotation about its axis.
- the cradle 72 may be fixed to the proximal end of the rototube 50 .
- the cradle 72 may include one or more lateral protrusions 102 that is held between two ridges 104 defined in the inner surface of the housing 20 of the handle 2 .
- the ridges 104 may be generally parallel to one another, and each in a plane generally perpendicular to the longitudinal centerline of the rototube 50 . In this way, the cradle 72 is able to rotate about the longitudinal axis of the rototube 50 , along with a remainder of the rototube 50 , while remaining at substantially the same longitudinal position relative to the handle 2 . Referring also to FIG. 6 , the distal end of the rototube necks down to connect to the proximal end of the shaft 4 .
- the shaft 4 is configured to be held by the handle 2 in such a manner that the shaft 4 is rotatable relative to the handle.
- the aperture 106 at the distal end of the handle 2 supports the shaft 4 , but is not fixed to the shaft 4 , such that the shaft 4 is rotatable within the aperture 106 .
- By rotating the rototube 50 about its longitudinal axis another axis of rotation is provided for the end effector 6 in addition to the axis of rotation provided by the rotary articulator 62 .
- the rototube 50 may be actuated to rotate about its longitudinal axis in any suitable manner.
- the articulation control 60 may be rotated about its axis, thereby rotating the rototube 50 about its longitudinal axis as well.
- the articulation control 60 may be actuated to rotate the rototube 50 prior to locking the rotary articulator 62 in place.
- the articulation control 60 may be free to both rotate the rototube 50 and the rotary articulator 62 at the same time.
- the handle 2 may include a clamping trigger 22 for actuating the end effector 6 to move to a clamped position or state, and an actuating trigger 40 for actuating the end effector 6 to deploy staples and/or otherwise actuate the end effector 6 .
- the clamping trigger 22 may be omitted.
- the clamping trigger 22 may be configured in any suitable manner that allows it to actuate the end effector 6 to a clamped position or state. As one example, an aperture may be defined through the housing 20 such that the distal end of the clamping trigger 22 enters the housing 20 .
- a clamping axle 30 may be defined in the housing 20 and extend inward from the inner surface of the housing 20 , and the clamping trigger 22 may be configured to rotate about that clamping axle 30 .
- the clamping trigger 22 may have a pivot 26 defined therein, where that pivot 26 is oriented substantially perpendicular to the longitudinal centerline of the proximal end of the shaft 4 .
- a linkage 24 is rotatably connected to the pivot 26 at or near one end, and the other end of the linkage 24 is positioned in a notch 34 in a clamp controller 32 .
- the clamp controller 32 may be generally cylindrical, and the notch 34 defined therein may extend around part or all of the circumference of the clamp controller 32 .
- the notch 34 may be oriented substantially perpendicular to the longitudinal centerline of the proximal end of the shaft 4 .
- the actuating trigger 40 may be configured in any suitable manner that allows it to actuate the end effector 6 to deploy staples and/or otherwise actuate the end effector 6 .
- a trigger axle 42 may be defined in the housing 20 and extend inward from the inner surface of the housing 20 , and the actuating trigger 40 may be configured to rotate about that trigger axle 42 .
- the trigger 40 is advantageously oriented to be compressed by hand by the user.
- the upper surface of the trigger 40 may include one or more teeth 44 defined therein. Alternately, the teeth 44 may be defined in a different part of the trigger 40 .
- one or more teeth 48 may be defined in the lower surface of an actuation controller 46 , and configured to engage the teeth 44 of the trigger 40 .
- the rototube 50 may include at least one cutout 52 defined therein to allow the rototube 50 to rotate about its longitudinal axis without colliding with the upper end of the trigger 40 .
- a portion of at least one feeder belt 120 may extend from the shaft 4 into, or be positioned within, the end effector 6 . Where at least one feeder belt extends from the shaft 4 through the bulkhead 90 into the end effector 6 , each feeder belt may extend through the feeder belt access apertures 96 in the bulkhead 90 .
- the feeder belt 120 and its associated hardware may be as set forth in the Endocutter Applications and in FIG. 11 . In the interest of brevity, the feeder belt 120 will not be described in detail herein.
- Each feeder belt 120 may be a long, narrow, thin strip of material from which one or more staples 122 extend. At least one staple 122 may be frangibly connected to the feeder belt 120 at one end, with the other end of the staple being free.
- One row 124 of staples 122 may be located along each side of the feeder belt 120 .
- Each feeder belt 120 may be movable relative to the end effector 6 , as set forth in the Endocutter Applications, such that the end effector 6 can be actuated multiple times without the need to exchange cartridges or remove the end effector 6 from the patient between actuations.
- the end effector 6 may be configured generally as set forth in the Endocutter Applications, as one example, or may be configured differently.
- the end effector 6 optionally may include at least one engagement feature 92 defined therein, or thereon.
- the engagement feature 92 connects to a corresponding feature on the shaft 4 , such that the end effector 6 can be removed from the shaft 4 , and a new end effector 6 connected to the shaft 4 . That is, the end effector 6 optionally may be interchangeable on the shaft 4 . In this way, the end effector 6 can be removed for sterilization of a remainder of the surgical instrument 1 , and/or the end effector 6 can be reloaded during a surgical procedure with a fresh end effector 6 of the same type, or a different end effector 6 of a different type. If so, the feeder belt optionally may not extend through the bulkhead 90 , such that the apertures 96 need not be provided in the bulkhead 90 .
- the end effector 6 of the surgical instrument 1 is introduced into the body of the patient, whether through a trocar port, a small incision for minimally invasive surgery, or a larger incision for conventional open surgery. At least part of the shaft 4 may follow the end effector 6 into the patient.
- the end effector 6 is positioned by the user at a surgical site.
- a surgical site is located on a blood vessel which is to be transected. For clarity, this document describes the exemplary operation of the surgical instrument 1 for transection of a blood vessel.
- the use of the surgical instrument 1 is not limited to blood vessel transection; the surgical instrument 1 may be used to perform any other suitable procedure at any other surgical site in the body.
- the surgical instrument 1 may be used to transect a bile duct, to remove a diseased appendix, to transect gastrointestinal tissue, and/or to transect soft tissue or organs.
- the end effector 6 may be used to treat a surface of the body, such that the end effector 6 is not inserted into the patient.
- the end effector 6 may be inserted into the body of a patient through an opening, incision, trocar port or other aperture, in the open or closed position. The end effector 6 is then advanced to a site where tissue to be treated is located. An endoscope, inserted through the same or a different opening, incision, trocar port, or aperture may be used to guide the end effector 6 into position, where the end effector 6 is utilized for a minimally-invasive surgical procedure. Alternately, a camera (not shown) is attached to the end effector 6 and/or shaft 4 of the surgical instrument 1 ; a light source and any other necessary auxiliary hardware may be attached to the end effector 6 and/or shaft 4 as well. If so, the surgeon may visualize the surgical site solely utilizing the surgical instrument 1 , thereby reducing the number of openings that are made in the patient and rendering the surgical procedure more minimally invasive.
- the surgeon advances the end effector 6 into proximity to the surgical site.
- the end effector 6 fortuitously may be properly oriented relative to the surgical site at this time. If so, the end effector 6 need not be articulated. If the end effector 6 is not properly oriented relative to the surgical site, then the end effector 6 may be articulated.
- the surgeon first may move the articulation control 60 , such as with his or her thumb.
- the pin 80 is moved proximally, if it is not already in that position whether due to its affirmative motion proximally by the surgeon, or due to a force biasing the pin 80 proximally.
- the articulation control 60 and consequently the rotary articulator 62 , is free to rotate left and right about the axle or axles 68 .
- the cable 64 is under tension, and is fixed to the rotary articulator 62 as described above.
- the cable 64 exerts a force in the proximal direction on the right side of the bulkhead 90 of the end effector 6 , at a point lateral to and spaced apart from the longitudinal centerline of the end effector 6 , such as at an aperture 94 on the right side of the bulkhead 90 .
- this force exerts a torque about the yaw axis, causing the shaft 4 to bend to the right due to bending in the articulated region 12 .
- bending is focused in and substantially restricted to the articulated region 12 .
- the surgeon need not overcome a substantial force in order to articulate the end effector 6 , and can move the articulation control 60 one-handed. The surgeon moves the articulation control 60 left or right until the desired orientation is reached, and then moves the pin 80 distally.
- the surgeon may release the pin 80 , if it is biased distally, or may affirmatively move the pin 80 distally.
- the legs 84 of the clip 82 move distally, and may move apart from one another as well.
- Each leg 84 enters a space between adjacent teeth 86 defined in the opening 88 , or between a tooth 86 and a wall defining the leftmost or rightmost edge of the opening 88 .
- the orientation of the end effector 6 may change slightly; the spaces between teeth 86 define discrete positions, and the teeth 86 are tapered to a point extending in the proximal direction to assist the legs 84 in sliding therebetween and slightly reorienting the end effector 6 as a result.
- the rotary articulator 62 is thus locked in place. If the surgeon is unhappy with the resulting orientation, or changes his or her mind, the pin 80 may be retracted proximally, and the articulation control 60 may be moved again. The rotary articulator 60 is then locked in place in the desired position, as set forth above.
- the surgeon may rotate the rototube 50 to orient the end effector 6 more precisely.
- the surgeon may rotate the articulation control 60 about its longitudinal axis.
- the rotation of the articulation control 60 about its longitudinal axis causes rotation of the rototube 50 .
- the rototube 50 may be actuated by a separate control.
- the shaft 4 (the proximal end of which is at least rotationally fixed to the distal end of the rototube 50 ) rotates as well, about the longitudinal axis of the part of the shaft 4 located proximal to the articulated section 12 of the shaft 4 .
- the articulation control 60 may then be locked into position in any suitable manner, to prevent further movement of the end effector 6 .
- the articulation control 60 need not be locked further; for example, clamping of the end effector 6 onto tissue at or in proximity to the surgical site may provide sufficient restriction of further motion of the end effector 6 .
- the end effector 6 is articulable in two degrees of freedom, about the roll and yaw axes.
- articulation of the end effector 6 has been described in a particular order, the surgeon could reverse the order, such that the rototube 50 is rotated first, then the articulation left or right about the yaw axis is performed. To do so, the surgeon may simply lock the rotary articulator 62 in a random position, rotate the rototube 50 , then unlock the rototube 50 and articulate the end effector 6 to cause bending of the shaft 4 in the articulated region 12 . Alternately, the surgeon may articulate the end effector 6 about both axes at the same time, if desired, then lock the rotary articulator 62 in place.
- the end effector 6 is now ready for actuation.
- the end effector 6 is in the open position as it is moved into position at the surgical site.
- the end effector 6 may be located in the desired position relative to the surgical site at the end of the articulation process.
- the shaft 4 may be advanced or moved after articulation to place the properly-oriented end effector 6 at the surgical site.
- the end effector 6 is used to perform transection of a blood vessel, the end effector 6 is in the open configuration, and placed over the blood vessel to be transected until the blood vessel is located between the staple holder 8 and the anvil 10 of the end effector 6 .
- the end effector 6 is then moved to the closed position. To do so, the clamping trigger 22 may be actuated.
- the pivot 26 of the trigger 22 moves toward the housing 20 as well, causing the linkage 24 to rotate about the pivot 26 and move toward the housing, and causing the proximal end of the linkage 24 to move proximally.
- the proximal end of the linkage 24 resides at least partially within the notch 34 in the clamp controller 32 , and the proximal motion of the proximal end of the linkage 24 urges the clamp controller 32 proximally.
- the clamp controller 32 may be connected to a clamp cable 36 , such that proximal motion of the clamp controller 32 pulls the clamp cable 36 proximally.
- the clamp cable 36 may extend into the end effector 6 through an aperture 94 in the bulkhead 90 of the end effector 6 . Proximal motion of the clamp cable 36 , and/or tensioning of the clamp cable 36 , may move the end effector 6 from the open position to the closed position, such as set forth in the Endocutter Applications.
- the end effector 6 then may be actuated.
- the surgeon may squeeze the actuating trigger 40 , which rotates about the trigger axle 42 .
- the teeth 44 of the trigger 40 engages the teeth 48 of the actuation controller 46 .
- the actuation controller 46 may be connected to an actuation cable 110 , such that proximal motion of the actuation controller 46 pulls the actuation cable 110 proximally.
- the actuation cable 110 may extend into the end effector 6 through an aperture 94 in the bulkhead 90 of the end effector 6 .
- Proximal motion of the actuation cable 110 , and/or tensioning of the clamp cable 36 may actuate the end effector 6 such as set forth in the Endocutter Applications.
- the staple holder 8 may deploy staples into the blood vessel and against the anvil 10 , along two or more lines, and a knife may cut the blood vessel between two such lines.
- the slider 54 connected to the actuation controller 46 moves proximally as well.
- the slider 54 extends out of the housing 20 , such as through a slot 61 in the upper surface of the housing 20 , and provides a visual indication that the end effector 6 has been actuated.
- the actuation of the end effector 6 is thus complete.
- the clamping trigger 22 may be moved away from the housing 20 , thereby releasing tension on the clamp cable 36 , allowing the end effector 6 to move back to the open position.
- the end effector 6 is biased to the open position, such as by a spring. If the surgical procedure is complete, the end effector 6 may be withdrawn from the patient.
- the feeder belt or belts may be advanced, placing a fresh set of staples in position for deployment within the staple holder. Such advancement may be accomplished as set forth in the Endocutter Applications.
- the slider 54 may be used to reset the surgical instrument 1 and advance the feeder belt or belts. For example, the slider may engage the driver and move the driver distally, thereby causing the ratchet pawl fixed to the driver to engage a corresponding face of the top plate of the feeder belt and advance the top plate distally, as set forth in the Endocutter Applications.
- the slider 54 also acts to indicate that the surgical instrument 1 has been reset and is ready to be fired again.
- the end effector 6 need not be withdrawn from the body of the patient during advancement of the feeder belts.
- the feeder belts may extend through the lumen of the shaft 4 into the housing 20 of the handle 2 . If so, the feeder belts may enter the end effector 6 through the feeder belt access apertures 96 in the bulkhead 90 of the end effector 6 .
- the surgeon may release the end effector 6 from its selected, articulated position, such as by moving the pin 80 proximally out of engagement with the teeth 86 . The surgeon may then articulate the end effector 6 differently for use at a different surgical site, as set forth above.
Abstract
Description
- This application is a divisional of U.S. patent application Ser. No. 12/400,760, filed on Mar. 9, 2009, which is herein incorporated by reference in its entirety.
- The invention generally relates to an articulated surgical instrument, and more specifically to an instrument that may be used to articulate a surgical stapler or endocutter.
- Minimally invasive surgery is performed through small incisions in the body, into which trocar ports may or may not be placed. One or more surgical instruments are inserted through each incision in order to perform the surgical procedure. In order to effectuate one of the objectives of minimally invasive surgery, which is the minimization of incisions to the body to reduce healing time and scarring, it is desirable to minimize the number of incisions made in the body. The number of incisions and their placement are determined by the particular surgical procedure to be performed and the configuration of the instruments used to carry out that procedure.
- One problem encountering during the performance of a minimally invasive surgical procedure is access to the tissue to be treated. Depending on the specific anatomy of the patient, it may be difficult to reach an area to be treated with a specific surgical instrument. As a result, one or more additional incisions may need to be made in the patient in order to access that tissue. Or, the surgeon may need to obtain a different surgical instrument, adding to the time and expense of the procedure. Additionally, where more incisions may be made or additional instruments may be utilized, it can be difficult and/or time-consuming for the surgeon to find the surgical site again.
-
FIG. 1 is a perspective view of a an exemplary surgical instrument. -
FIG. 2 is a detail perspective view of an exemplary articulated region on a shaft of the surgical instrument ofFIG. 1 . -
FIG. 3 is a detail perspective view of a second exemplary articulated region on a shaft of the surgical instrument ofFIG. 1 . -
FIG. 4 is a side cutaway view of a handle of the surgical instrument ofFIG. 1 . -
FIG. 5 is a detail side cutaway view of the distal end of the handle of the surgical instrument ofFIG. 1 . -
FIG. 6 is a top cross-section view of a handle of the surgical instrument ofFIG. 1 . -
FIG. 7 is a detail cutaway view of a portion of the proximal end of the handle of the surgical instrument ofFIG. 1 . -
FIG. 8 is a top cross-section view of the proximal end of the handle of the surgical instrument ofFIG. 1 . -
FIG. 9 is a side cutaway view of the proximal end of the handle of the surgical instrument ofFIG. 1 . -
FIG. 10 is a perspective view of an exemplary end effector of the surgical instrument ofFIG. 1 . -
FIG. 11 is a perspective view of an exemplary feeder belt with two rows of staples frangibly connected thereto. - The use of the same reference symbols in different figures indicates similar or identical items.
- U.S. patent application Ser. No. 11/851,379, filed Sep. 6, 2007; U.S. patent application Ser. No. 11/956,988, filed Dec. 14, 2007; and U.S. patent application Ser. No. 12/263,171, filed Oct. 31, 2008 (the “Endocutter Applications”) are hereby incorporated by reference herein in their entirety. Those documents, and any and all other documents incorporated by reference in this specification, are as much as a part of the specification as if the text were repeated in the application.
- Surgical Instrument
- Referring to
FIG. 1 , asurgical instrument 1 includes ahandle 2 attached to ashaft 4, which in turn is attached to anend effector 6. Thesurgical instrument 1 may be an endocutter, a linear cutter, a stapler, or any other suitable surgical instrument. Theend effector 6 may be one or more separate components that are connected to theshaft 4, or may be fabricated integrally with the distal end of theshaft 4. As discussed in greater detail below, theend effector 6 may be fixed to theshaft 4, or may be separable from theshaft 4 such that afresh end effector 6 may be attached to theshaft 4 after one or more actuations of the surgical instrument. Theend effector 6 and at least the distal end of theshaft 4 may be sized to pass through an incision or through a standard trocar port that may be placed in the patient. Advantageously, theend effector 6 may be sized to pass through a trocar port, having an opening between 5-10 millimeters in diameter. Alternately, thesurgical instrument 1 may be used in the course of conventional open surgery, where a trocar port is not used. Theend effector 6 may include astaple holder 8 connected to ananvil 10, and may be movable between an open configuration and a closed configuration. In the closed configuration, tissue may be clamped between thestaple holder 8 and theanvil 10. Alternately, theend effector 6 may omit theanvil 10. Alternately, theend effector 6 need not include astaple holder 8 oranvil 10, and theend effector 6 may instead be a different surgical instrument, such as but not limited to a bipolar cutter, a biopsy device, a grasper, or a stabilizer. - The
shaft 4 advantageously has a tubular shape with a lumen defined therein. Optionally, theshaft 4 may include a cutaway, trough or other feature (not shown) to allow a guidewire (if any) or other positioning aid that may be used in the surgical procedure to remain in place during actuation of thesurgical instrument 1. Theshaft 4 may be flexible or rigid, in whole or in part. Theshaft 4 may be articulated in at least one location, if desired. Referring toFIG. 2 , as one example, theshaft 4 may be generally rigid, with the exception of a flexible articulatedregion 12 that connects two generally-rigid segments of theshaft 4. A plurality ofslots 14 may be located in theshaft 4 in the articulatedregion 12. Theslots 14 may extend completely through the wall of theshaft 4 from the outer surface of the shaft to the lumen in theshaft 4. Theslots 14 may be arranged in any suitable manner. As one example, eachslot 14 may extend along greater than 180 degrees of circumference of theshaft 4, between twovertices 15. Proceeding proximally along theshaft 4, at least twoslots 14 may be generally arranged in an alternating manner. That is, oneslot 14 may open generally in one direction away from the longitudinal centerline of theshaft 4, and theslot 14 proximal to that may open generally in the opposite direction away from the longitudinal centerline of theshaft 4. To accomplish this, thevertices 15 of a slot opening (for example) laterally to the left may be located laterally to the right of the vertices of a longitudinally adjacent slot opening laterally to the right. As a result, where at least twoslots 14 extend along greater than 180 degrees of circumference of theshaft 4, no line on the surface of theshaft 4 that is parallel to the longitudinal centerline of theshaft 4 can extend completely through the articulatingregion 12 without encountering aslot 14. Put another way, every line on the surface of theshaft 4 that is parallel to the longitudinal centerline of theshaft 4 crosses at leastslot 14. Theslots 14 may be oriented and arranged relative to one another to provide for lateral articulation of theshaft 4. That is, theslots 14 may be oriented and arranged such that the portion of theshaft 4 distal to the articulatingregion 12 is rotatable in a single plane, laterally left and right. Alternately, theslots 14 may be oriented and arranged such that the portion of theshaft 4 distal to the articulatingregion 12 is rotatable in a single plane in a direction other than laterally left and right. Alternately, theslots 14 may be oriented and arranged such that the portion of theshaft 4 distal to the articulatingregion 12 is rotatable in more than a single plane. - At least one
slot 14 may be angled. That is, extending outward from avertex 15 of theslot 14, the walls of the slot may be angled relative to one another rather than parallel. Such an angle facilitates bending of the articulatedregion 12. Advantageously, at least oneslot 14 has an angle of substantially two degrees between its walls. However, the angle may be different, or the walls may instead be substantially parallel to one another. The width and angle of eachslot 14 may be selected to affect the total amount of travel of the articulating section. Advantageously, the articulatingsection 12 is bendable such that the portion of theshaft 4 distal to the articulatingsection 12 is movable through substantially ninety degrees relative to the portion of theshaft 4 proximal to the articulating section, where 45 degrees of such movement is on either side of the longitudinal centerline of theshaft 4. Alternately, the articulatingsection 12 may be configured to allow a different amount of movement, either greater than or less than ninety degrees. Alternately, the articulatingsection 12 may be configured to allow movement in more than one plane, in either the same or different amounts in either plane. Alternately, the articulatingsection 12 may be configured to allow asymmetrical articulation, wherein the distal end of theshaft 4 distal to the articulating section may be movable through a first angle on one side of the longitudinal centerline of theshaft 4 that is greater than a second angle on the other side of the longitudinal centerline of theshaft 4. - Referring to
FIG. 3 , another example of an articulatingregion 12 is shown. Theslots 14 may be configured similarly to those described above with regard toFIG. 2 . However, at least one of theslots 14 may extend along less than 180 degrees of circumference of theshaft 4. If all of theslots 14 do so, then theslots 14 may be arranged such that a line on the surface of theshaft 4 that is parallel to the longitudinal centerline of theshaft 4 can extend completely through the articulatingregion 12 without encountering aslot 14. One ormore slots 14 may be connected to alongitudinal aperture 17 at avertex 15 thereof, such that theslot 14 may have a T-shaped appearance if viewed from above. The presence of thelongitudinal aperture 17, and its length, provide for greater flexibility of the articulatedregion 12. The longer thelongitudinal apertures 17, the more flexible the articulatedregion 12. - The
handle 2 may be attached to the proximal end of theshaft 4, or any other suitable portion of theshaft 4. Theshaft 4 may be fabricated integrally with thehandle 2. Alternately, theshaft 4 and thehandle 2 may be two separate items that are connected together in any suitable manner. Thehandle 2 may include any mechanism, mechanisms, structure or structures that are suitably configured to actuate theend effector 6. Thehandle 2 may also include a source of stored energy for actuating theend effector 6. The source of stored energy may be mechanical (such as a spring), electrical (such as a battery), pneumatic (such as a cylinder of pressurized gas) or any other suitable source of stored energy. The source of stored energy, its regulation, and its use in actuating theend effector 6 may be as described in the U.S. patent application Ser. No. 11/054,265, filed on Feb. 9, 2005, which is herein incorporated by reference in its entirety. Thehandle 2 may instead, or also, include a connector or connectors suitable for receiving stored energy from an external source, such as a hose connected to a hospital utility source of pressurized gas or of vacuum, or an electrical cord connectable to a power source. - Referring also to
FIGS. 4 and 8 , acable 64 extends through the lumen of theshaft 4 proximally into thehousing 20 of thehandle 2. Thecable 64 wraps around anrotary articulator 62 and then extends distally back out of thehousing 20 into the lumen of theshaft 4. Therotary articulator 62 may be spherical, partially spherical, spheroidal, cylindrical, or may have any other suitable shape. Thecable 64 may be fixed to therotary articulator 62, such as by acylinder 66, tab, or other wider structure that is fixed to thecable 64. Thecylinder 66 is held by a corresponding detent in therotary articulator 62, such as in its proximal end. Thecylinder 66 may be fixed to therotary articulator 62, such as by welding, adhesive, crimping, pressure fitting, or any other or additional structure, mechanism or method. Alternately, thecable 64 may be fixed directly to therotary articulator 62, such as by welding, adhesive, crimping, pressure fitting, or any other or additional structure, mechanism or method. Thecable 64 may be wrapped around therotary articulator 62 once, or more than once. Advantageously, thecable 64 is wrapped around the proximal end of therotary articulator 62 such that thecable 64 is routed proximally from theshaft 4 along one side of therotary articulator 62, around the proximal end of therotary articulator 62, then distally along the other side of therotary articulator 62 to theshaft 4. Referring also toFIG. 6 , thecable 64 is routed through thehandle 2 such that it is capable of moving substantially freely. Theclamp controller 32 may include two ormore ramps 112 or apertures that receive thecable 64 and allow thecable 64 to smoothly enter the lumen of theshaft 4. Theclamp controller 32 may also include atunnel 114 or opening extending longitudinally therethrough to allow theactuation cable 110 to extend therethrough into the lumen of theshaft 4. - Referring also to
FIG. 10 , the proximal end of theend effector 6 may include abulkhead 90 in which one ormore apertures 94 are defined. Advantageously, both ends of thecable 64 extend throughseparate apertures 94, where thoseapertures 94 are laterally spaced apart from one another. Advantageously, those twoapertures 94 through which thecable 64 extends and the longitudinal centerline of theshaft 4 are aligned along a straight line. Distal to thebulkhead 90, the ends of thecable 64 may be knotted, fixed to structures wider than the diameter of theaperture 94, or otherwise secured distal to thebulkhead 90. Thecable 64 may be under tension when the ends of thecable 64 are secured relative to thebulkhead 90. Alternately, one or more of theapertures 94 may be omitted, and at least one end of thecable 64 is fixed directly to the bulkhead, such as by welding, adhesive, crimping, pressure fitting, or any other or additional structure, mechanism or method. Alternately, thebulkhead 90 may be fixed to theshaft 4, rather than theend effector 6. Alternately, thebulkhead 90 may be any rigid structure substantially fixed relative to the distal end of theshaft 4. - The
rotary articulator 62 may be held in acradle 72 within the housing of thehandle 2. Thecradle 72 holds therotary articulator 62 in a substantially fixed longitudinal position within thehandle 2. The proximal end of thecradle 72 may be shaped substantially the same as the proximal surface of therotary articulator 62, such that therotary articulator 62 can rotate smoothly in thecradle 72. One ormore pins 100, lips or tabs may extend inward from the distal end of thecradle 72 to retain therotary articulator 62 within thecradle 72 while still allowing therotary articulator 62 to rotate. Alternately, thecradle 72 is not used, and thehousing 20 or other component of thehandle 2 holds therotary articulator 62 in a substantially fixed longitudinal position within thehandle 2. Referring also toFIG. 9 , at least oneaxle 68 may extend from thecradle 72 into acorresponding slot 70 defined in therotary articulator 62. The axle oraxles 68 define an axis about which therotary articulator 62 is rotatable. Alternately, theaxles 68 are not utilized, and therotary articulator 62 is otherwise constrained to rotate about one or more axes. - Referring also to
FIG. 9 , anarticulation control 60 may be connected to therotary articulator 62, and extend through anopening 74 in thehousing 20 as well as anopening 88 in the proximal end of thecradle 72. Thearticulation control 60 may be fixed to therotary articulator 62, and may be connected to it in any suitable manner, such as by fasteners, adhesive, welding, or any other suitable structure, mechanism or method. Thearticulation control 60 is configured such that motion of thearticulation control 60 from side to side causes rotation of therotary articulator 62 about an axis, such as defined by one or more of theaxles 68. Atube 81 may extend from thearticulation control 60 toward the rotary articulator, and apin 80 may be positioned partially in the lumen of and extending proximally from thattube 81. Thepin 80 may be slidable within the lumen of thetube 81. Aclip 82 is fixed to thepin 80, and extends distally into thetube 81. Theclip 82 may includes twolegs 84 biased outward relative to the longitudinal centerline of thetube 81. Thelegs 84 may be generally symmetrical and generally thin and planar, or may be otherwise configured. Thelegs 84 may be spaced apart from one another. - The
opening 88 in the proximal end of thecradle 72 may have a plurality ofteeth 86 defined along its upper and/or lower edges. Theclip 82 is configured to slide betweenadjacent teeth 86 when thepin 80 moves distally. Thepin 80 may be biased distally, or may be configured to remain placed where the user sets it. When thepin 80 is moved proximally, thelegs 84 are positioned proximal to the proximal edges of theteeth 86, such that thearticulation control 60 may be rotated left or right in order to rotate therotary articulator 62. Theclip 82 optionally may be shaped such that when thepin 80 is moved proximally, the outer edges of thelegs 84 encounter the distal end of thetube 81 and are colleted down by that contact. Such motion may facilitate free motion of therotary articulator 62. When thepin 80 is moved distally, it enters a space between twoteeth 86, thereby preventing rotation of therotary articulator 62 and fixing therotary articulator 62 in place. Theteeth 86 may be angled such that if aleg 84 encounter a space betweenteeth 86 while moving distally, theleg 84 is directed to the left or right into the space betweenadjacent teeth 86. The spacing between theteeth 86 defines the number of discrete positions at which therotary articulator 62 can be selectively fixed. Alternately, theteeth 86 may be omitted, and any other suitable mechanism may be used to selectively fix therotary articulator 62, either in one of a number of discrete positions, or along an infinitely variable continuum. - As the
rotary articulator 62 is rotated about the axle oraxles 68, thecable 64 transmits that rotation to theend effector 6, as described in greater detail below. Therotary articulator 62 may provide for articulation about one axis. Optionally, arototube 50 may provide for rotation about a second axis. Alternately, therotary articulator 62 is not used, and therototube 50 provides rotation about its axis. Where therototube 50 is utilized, thecradle 72 may be fixed to the proximal end of therototube 50. Thecradle 72 may include one or morelateral protrusions 102 that is held between tworidges 104 defined in the inner surface of thehousing 20 of thehandle 2. Theridges 104 may be generally parallel to one another, and each in a plane generally perpendicular to the longitudinal centerline of therototube 50. In this way, thecradle 72 is able to rotate about the longitudinal axis of therototube 50, along with a remainder of therototube 50, while remaining at substantially the same longitudinal position relative to thehandle 2. Referring also toFIG. 6 , the distal end of the rototube necks down to connect to the proximal end of theshaft 4. Theshaft 4 is configured to be held by thehandle 2 in such a manner that theshaft 4 is rotatable relative to the handle. Theaperture 106 at the distal end of thehandle 2 supports theshaft 4, but is not fixed to theshaft 4, such that theshaft 4 is rotatable within theaperture 106. By rotating therototube 50 about its longitudinal axis, another axis of rotation is provided for theend effector 6 in addition to the axis of rotation provided by therotary articulator 62. Therototube 50 may be actuated to rotate about its longitudinal axis in any suitable manner. As one example, after therotary articulator 62 is locked in place as described above, thearticulation control 60 may be rotated about its axis, thereby rotating therototube 50 about its longitudinal axis as well. As another example, thearticulation control 60 may be actuated to rotate therototube 50 prior to locking therotary articulator 62 in place. As another example, thearticulation control 60 may be free to both rotate therototube 50 and therotary articulator 62 at the same time. - Referring to
FIGS. 4-5 , thehandle 2 may include a clampingtrigger 22 for actuating theend effector 6 to move to a clamped position or state, and anactuating trigger 40 for actuating theend effector 6 to deploy staples and/or otherwise actuate theend effector 6. Where theend effector 6 is not configured to clamp tissue, the clampingtrigger 22 may be omitted. The clampingtrigger 22 may be configured in any suitable manner that allows it to actuate theend effector 6 to a clamped position or state. As one example, an aperture may be defined through thehousing 20 such that the distal end of the clampingtrigger 22 enters thehousing 20. A clampingaxle 30 may be defined in thehousing 20 and extend inward from the inner surface of thehousing 20, and the clampingtrigger 22 may be configured to rotate about that clampingaxle 30. The clampingtrigger 22 may have apivot 26 defined therein, where thatpivot 26 is oriented substantially perpendicular to the longitudinal centerline of the proximal end of theshaft 4. Alinkage 24 is rotatably connected to thepivot 26 at or near one end, and the other end of thelinkage 24 is positioned in anotch 34 in aclamp controller 32. Theclamp controller 32 may be generally cylindrical, and thenotch 34 defined therein may extend around part or all of the circumference of theclamp controller 32. Thenotch 34 may be oriented substantially perpendicular to the longitudinal centerline of the proximal end of theshaft 4. As the free end of the clampingtrigger 22 is depressed, and the clampingtrigger 22 rotates about the clampingaxle 30, theproximal end 28 of thelinkage 24 moves proximally, urging theclamp controller 32 proximally to actuate theend effector 6 to clamp, as described in greater detail below. - The
actuating trigger 40 may be configured in any suitable manner that allows it to actuate theend effector 6 to deploy staples and/or otherwise actuate theend effector 6. Atrigger axle 42 may be defined in thehousing 20 and extend inward from the inner surface of thehousing 20, and theactuating trigger 40 may be configured to rotate about thattrigger axle 42. Thetrigger 40 is advantageously oriented to be compressed by hand by the user. The upper surface of thetrigger 40 may include one ormore teeth 44 defined therein. Alternately, theteeth 44 may be defined in a different part of thetrigger 40. Correspondingly, one ormore teeth 48 may be defined in the lower surface of anactuation controller 46, and configured to engage theteeth 44 of thetrigger 40. As thetrigger 40 is depressed, thetrigger 40 rotates about thetrigger axle 42, such that the upper surface of thetrigger 40 moves proximally. As that upper surface moves proximally, theteeth 44 of thetrigger 40 engage theteeth 48 of theactuation controller 46 and urge the actuation controller proximally to actuate theend effector 6, as described in greater detail below. Therototube 50 may include at least onecutout 52 defined therein to allow therototube 50 to rotate about its longitudinal axis without colliding with the upper end of thetrigger 40. - A portion of at least one
feeder belt 120 may extend from theshaft 4 into, or be positioned within, theend effector 6. Where at least one feeder belt extends from theshaft 4 through thebulkhead 90 into theend effector 6, each feeder belt may extend through the feederbelt access apertures 96 in thebulkhead 90. Thefeeder belt 120 and its associated hardware may be as set forth in the Endocutter Applications and inFIG. 11 . In the interest of brevity, thefeeder belt 120 will not be described in detail herein. Eachfeeder belt 120 may be a long, narrow, thin strip of material from which one ormore staples 122 extend. At least onestaple 122 may be frangibly connected to thefeeder belt 120 at one end, with the other end of the staple being free. Onerow 124 ofstaples 122 may be located along each side of thefeeder belt 120. Eachfeeder belt 120 may be movable relative to theend effector 6, as set forth in the Endocutter Applications, such that theend effector 6 can be actuated multiple times without the need to exchange cartridges or remove theend effector 6 from the patient between actuations. Theend effector 6 may be configured generally as set forth in the Endocutter Applications, as one example, or may be configured differently. - The
end effector 6 optionally may include at least oneengagement feature 92 defined therein, or thereon. Theengagement feature 92 connects to a corresponding feature on theshaft 4, such that theend effector 6 can be removed from theshaft 4, and anew end effector 6 connected to theshaft 4. That is, theend effector 6 optionally may be interchangeable on theshaft 4. In this way, theend effector 6 can be removed for sterilization of a remainder of thesurgical instrument 1, and/or theend effector 6 can be reloaded during a surgical procedure with afresh end effector 6 of the same type, or adifferent end effector 6 of a different type. If so, the feeder belt optionally may not extend through thebulkhead 90, such that theapertures 96 need not be provided in thebulkhead 90. - Operation
- The
end effector 6 of thesurgical instrument 1 is introduced into the body of the patient, whether through a trocar port, a small incision for minimally invasive surgery, or a larger incision for conventional open surgery. At least part of theshaft 4 may follow theend effector 6 into the patient. Theend effector 6 is positioned by the user at a surgical site. As one example, where theend effector 6 is an endocutter such as described in the Endocutter Applications, a surgical site is located on a blood vessel which is to be transected. For clarity, this document describes the exemplary operation of thesurgical instrument 1 for transection of a blood vessel. However, the use of thesurgical instrument 1 is not limited to blood vessel transection; thesurgical instrument 1 may be used to perform any other suitable procedure at any other surgical site in the body. For example, thesurgical instrument 1 may be used to transect a bile duct, to remove a diseased appendix, to transect gastrointestinal tissue, and/or to transect soft tissue or organs. Alternately, theend effector 6 may be used to treat a surface of the body, such that theend effector 6 is not inserted into the patient. - The
end effector 6 may be inserted into the body of a patient through an opening, incision, trocar port or other aperture, in the open or closed position. Theend effector 6 is then advanced to a site where tissue to be treated is located. An endoscope, inserted through the same or a different opening, incision, trocar port, or aperture may be used to guide theend effector 6 into position, where theend effector 6 is utilized for a minimally-invasive surgical procedure. Alternately, a camera (not shown) is attached to theend effector 6 and/orshaft 4 of thesurgical instrument 1; a light source and any other necessary auxiliary hardware may be attached to theend effector 6 and/orshaft 4 as well. If so, the surgeon may visualize the surgical site solely utilizing thesurgical instrument 1, thereby reducing the number of openings that are made in the patient and rendering the surgical procedure more minimally invasive. - The surgeon advances the
end effector 6 into proximity to the surgical site. Theend effector 6 fortuitously may be properly oriented relative to the surgical site at this time. If so, theend effector 6 need not be articulated. If theend effector 6 is not properly oriented relative to the surgical site, then theend effector 6 may be articulated. The surgeon first may move thearticulation control 60, such as with his or her thumb. Thepin 80 is moved proximally, if it is not already in that position whether due to its affirmative motion proximally by the surgeon, or due to a force biasing thepin 80 proximally. As a result, thearticulation control 60, and consequently therotary articulator 62, is free to rotate left and right about the axle oraxles 68. Thecable 64 is under tension, and is fixed to therotary articulator 62 as described above. As the surgeon rotates thearticulation control 60 to the left, for example, thecable 64 exerts a force in the proximal direction on the right side of thebulkhead 90 of theend effector 6, at a point lateral to and spaced apart from the longitudinal centerline of theend effector 6, such as at anaperture 94 on the right side of thebulkhead 90. As a result, this force exerts a torque about the yaw axis, causing theshaft 4 to bend to the right due to bending in the articulatedregion 12. As the only flexible region between thebulkhead 90 of theend effector 6 and thehandle 2, bending is focused in and substantially restricted to the articulatedregion 12. Because the articulatedregion 12 is flexible, and because springs or other force transmission members are advantageously not used in articulating theshaft 4 and/or returning theshaft 4 to a neutral position, the surgeon need not overcome a substantial force in order to articulate theend effector 6, and can move thearticulation control 60 one-handed. The surgeon moves thearticulation control 60 left or right until the desired orientation is reached, and then moves thepin 80 distally. The surgeon may release thepin 80, if it is biased distally, or may affirmatively move thepin 80 distally. As thepin 80 moves distally, thelegs 84 of theclip 82 move distally, and may move apart from one another as well. Eachleg 84 enters a space betweenadjacent teeth 86 defined in theopening 88, or between atooth 86 and a wall defining the leftmost or rightmost edge of theopening 88. As thelegs 84 enter those spaces, the orientation of theend effector 6 may change slightly; the spaces betweenteeth 86 define discrete positions, and theteeth 86 are tapered to a point extending in the proximal direction to assist thelegs 84 in sliding therebetween and slightly reorienting theend effector 6 as a result. Therotary articulator 62 is thus locked in place. If the surgeon is unhappy with the resulting orientation, or changes his or her mind, thepin 80 may be retracted proximally, and thearticulation control 60 may be moved again. Therotary articulator 60 is then locked in place in the desired position, as set forth above. - Next, if necessary, the surgeon may rotate the
rototube 50 to orient theend effector 6 more precisely. To do so, the surgeon may rotate thearticulation control 60 about its longitudinal axis. With therotary articulator 62 locked in place relative to thecradle 72, and with thecradle 72 being fixed to therototube 50, the rotation of thearticulation control 60 about its longitudinal axis causes rotation of therototube 50. Alternately, therototube 50 may be actuated by a separate control. As therototube 50 rotates, the shaft 4 (the proximal end of which is at least rotationally fixed to the distal end of the rototube 50) rotates as well, about the longitudinal axis of the part of theshaft 4 located proximal to the articulatedsection 12 of theshaft 4. Thearticulation control 60 may then be locked into position in any suitable manner, to prevent further movement of theend effector 6. Alternately, thearticulation control 60 need not be locked further; for example, clamping of theend effector 6 onto tissue at or in proximity to the surgical site may provide sufficient restriction of further motion of theend effector 6. - In this way, the
end effector 6 is articulable in two degrees of freedom, about the roll and yaw axes. Although articulation of theend effector 6 has been described in a particular order, the surgeon could reverse the order, such that therototube 50 is rotated first, then the articulation left or right about the yaw axis is performed. To do so, the surgeon may simply lock therotary articulator 62 in a random position, rotate therototube 50, then unlock therototube 50 and articulate theend effector 6 to cause bending of theshaft 4 in the articulatedregion 12. Alternately, the surgeon may articulate theend effector 6 about both axes at the same time, if desired, then lock therotary articulator 62 in place. - The
end effector 6 is now ready for actuation. Theend effector 6 is in the open position as it is moved into position at the surgical site. Theend effector 6 may be located in the desired position relative to the surgical site at the end of the articulation process. Alternately, theshaft 4 may be advanced or moved after articulation to place the properly-orientedend effector 6 at the surgical site. Where theend effector 6 is used to perform transection of a blood vessel, theend effector 6 is in the open configuration, and placed over the blood vessel to be transected until the blood vessel is located between thestaple holder 8 and theanvil 10 of theend effector 6. Theend effector 6 is then moved to the closed position. To do so, the clampingtrigger 22 may be actuated. As the clampingtrigger 22 is moved toward thehousing 20 of thehandle 2, thepivot 26 of thetrigger 22 moves toward thehousing 20 as well, causing thelinkage 24 to rotate about thepivot 26 and move toward the housing, and causing the proximal end of thelinkage 24 to move proximally. As set forth above, the proximal end of thelinkage 24 resides at least partially within thenotch 34 in theclamp controller 32, and the proximal motion of the proximal end of thelinkage 24 urges theclamp controller 32 proximally. Theclamp controller 32 may be connected to aclamp cable 36, such that proximal motion of theclamp controller 32 pulls theclamp cable 36 proximally. Theclamp cable 36 may extend into theend effector 6 through anaperture 94 in thebulkhead 90 of theend effector 6. Proximal motion of theclamp cable 36, and/or tensioning of theclamp cable 36, may move theend effector 6 from the open position to the closed position, such as set forth in the Endocutter Applications. - The
end effector 6 then may be actuated. The surgeon may squeeze theactuating trigger 40, which rotates about thetrigger axle 42. As thetrigger 40 rotates, theteeth 44 of thetrigger 40 engages theteeth 48 of theactuation controller 46. Thus, as the upper surface of thetrigger 40 moves proximally, theteeth 44 urge theteeth 48, and thereby theactuation control 46, proximally. Theactuation controller 46 may be connected to anactuation cable 110, such that proximal motion of theactuation controller 46 pulls theactuation cable 110 proximally. Theactuation cable 110 may extend into theend effector 6 through anaperture 94 in thebulkhead 90 of theend effector 6. Proximal motion of theactuation cable 110, and/or tensioning of theclamp cable 36, may actuate theend effector 6 such as set forth in the Endocutter Applications. For example, thestaple holder 8 may deploy staples into the blood vessel and against theanvil 10, along two or more lines, and a knife may cut the blood vessel between two such lines. - As the
actuation controller 46 moves proximally, theslider 54 connected to theactuation controller 46 moves proximally as well. Theslider 54 extends out of thehousing 20, such as through aslot 61 in the upper surface of thehousing 20, and provides a visual indication that theend effector 6 has been actuated. The actuation of theend effector 6 is thus complete. The clampingtrigger 22 may be moved away from thehousing 20, thereby releasing tension on theclamp cable 36, allowing theend effector 6 to move back to the open position. Advantageously, theend effector 6 is biased to the open position, such as by a spring. If the surgical procedure is complete, theend effector 6 may be withdrawn from the patient. - If the surgeon desires to use the
end effector 6 at a different location within the patient, and thesurgical instrument 1 includes one or more feeder belts, as described in the Endocutter Applications, the feeder belt or belts may be advanced, placing a fresh set of staples in position for deployment within the staple holder. Such advancement may be accomplished as set forth in the Endocutter Applications. Optionally, theslider 54 may be used to reset thesurgical instrument 1 and advance the feeder belt or belts. For example, the slider may engage the driver and move the driver distally, thereby causing the ratchet pawl fixed to the driver to engage a corresponding face of the top plate of the feeder belt and advance the top plate distally, as set forth in the Endocutter Applications. In this way, theslider 54 also acts to indicate that thesurgical instrument 1 has been reset and is ready to be fired again. Theend effector 6 need not be withdrawn from the body of the patient during advancement of the feeder belts. The feeder belts may extend through the lumen of theshaft 4 into thehousing 20 of thehandle 2. If so, the feeder belts may enter theend effector 6 through the feederbelt access apertures 96 in thebulkhead 90 of theend effector 6. The surgeon may release theend effector 6 from its selected, articulated position, such as by moving thepin 80 proximally out of engagement with theteeth 86. The surgeon may then articulate theend effector 6 differently for use at a different surgical site, as set forth above. - While the invention has been described in detail, it will be apparent to one skilled in the art that various changes and modifications can be made and equivalents employed, without departing from the present invention. It is to be understood that the invention is not limited to the details of construction, the arrangements of components, and/or the method set forth in the above description or illustrated in the drawings. Statements in the abstract of this document, and any summary statements in this document, are merely exemplary; they are not, and cannot be interpreted as, limiting the scope of the claims. Further, the figures are merely exemplary and not limiting. Topical headings and subheadings are for the convenience of the reader only. They should not and cannot be construed to have any substantive significance, meaning or interpretation, and should not and cannot be deemed to indicate that all of the information relating to any particular topic is to be found under or limited to any particular heading or subheading. Therefore, the invention is not to be restricted or limited except in accordance with the following claims and their legal equivalents.
Claims (20)
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US13/048,674 US20120061446A1 (en) | 2009-03-09 | 2011-03-15 | Method for Treating Tissue With an Articulated Surgical Instrument |
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US12/400,760 US7918376B1 (en) | 2009-03-09 | 2009-03-09 | Articulated surgical instrument |
US13/048,674 US20120061446A1 (en) | 2009-03-09 | 2011-03-15 | Method for Treating Tissue With an Articulated Surgical Instrument |
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US12/400,760 Division US7918376B1 (en) | 2009-03-09 | 2009-03-09 | Articulated surgical instrument |
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US13/048,674 Abandoned US20120061446A1 (en) | 2009-03-09 | 2011-03-15 | Method for Treating Tissue With an Articulated Surgical Instrument |
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US12/400,760 Active US7918376B1 (en) | 2009-03-09 | 2009-03-09 | Articulated surgical instrument |
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