WO2003072179A1 - Guidewire for embolic protection comprising an activatable stop and methods of use - Google Patents
Guidewire for embolic protection comprising an activatable stop and methods of use Download PDFInfo
- Publication number
- WO2003072179A1 WO2003072179A1 PCT/US2003/005412 US0305412W WO03072179A1 WO 2003072179 A1 WO2003072179 A1 WO 2003072179A1 US 0305412 W US0305412 W US 0305412W WO 03072179 A1 WO03072179 A1 WO 03072179A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- guidewire
- core wire
- stop
- disposed
- actuatable
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/09—Guide wires
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/09—Guide wires
- A61M2025/09175—Guide wires having specific characteristics at the distal tip
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/09—Guide wires
- A61M25/09016—Guide wires with mandrils
- A61M25/09025—Guide wires with mandrils with sliding mandrils
Definitions
- the present invention relates generally to the field of intravascular guidewires. More particularly, the present invention pertains to intravascular guidewires having an articulating distal section.
- a flexible guidewire is inserted into a vascular lumen through a guide catheter, and then advanced to a desired location within the body.
- an intravascular device such as an embolic filter can be advanced along the guidewire distal a lesion and deployed to prevent embolic debris from flowing downstream during, for example, an angioplasty or atherectomy procedure.
- a radially flexible guidewire capable of traversing the cavities of the body by applying a force on a proximal section of the guidewire. It is also desireable for the distal section of the guidewire to have a reduced profile capable of placement beyond a lesion or other protrusion in the vasculature with minimal interference.
- One such series of improvements has resulted in the use of a thin, flexible guidewire having a distally tapering cross-sectional area for improved steering, and a coiled wire helix disposed about an arcuate distal end of the guidewire for improved tracking.
- the present invention relates generally to the field of intravascular guidewires. More particularly, the present invention pertains to intravascular guidewires having an articulating distal section.
- a guidewire having an articulating distal section is comprised of an elongated core wire having a longitudinal axis, a proximal end and a distal end; and an actuatable tip disposed about the distal end of the core wire having an outwardly expandable portion adapted to have a reduced profile in a first position, and an enlarged profile in a second position.
- the expandable portion of the actuatable tip may comprise a plurality of openings circumferentially disposed about the length of a tubular member.
- the outer diameter of the tubular member may be adapted to permit an intravascular device such as a cartridge filter to slide thereon.
- a guidewire having an articulating distal section includes an elongated core wire having a longitudinal axis, a proximal end and a distal end; an actuator moveable about the core wire; and an actuatable tip adapted to have a reduced profile in a first position, and an enlarged profile in a second position.
- the actuatable tip may include a spring coil helically disposed about the core wire.
- the actuatable tip may include a mesh sleeve adapted to outwardly expand when compressed axially.
- the actuatable tip may include an accordion-shaped polymeric tube similarly adapted to outwardly expand when compressed axially.
- the distal section of an articulating guidewire includes a friction fit between the core wire and the actuatable tip which can be utilized to prevent the distal section of the guidewire from reverting to the first position, once articulated.
- a locking mechanism such as a locking hub can be utilized to prevent the distal section of the guidewire from reverting to the first position, once articulated.
- Figure 1 is a plan view of an articulating guidewire in accordance with a first embodiment of the present invention.
- Figure 2 is a cross-sectional view of the distal section of the guidewire in Figure 1 showing the guidewire in a first position having a reduced profile.
- Figure 3 is another cross-sectional view of the distal section of the guidewire in Figure 1 showing the guidewire in a second position having an enlarged profile.
- Figure 4 is cross-sectional view of a particular implementation of the present invention employing a locking mechanism on the distal section of the guidewire.
- Figure 5 is a cross-sectional view of the distal section of an articulating guidewire in accordance with a second embodiment of the present invention, wherein the guidewire is shown in a first position having a reduced profile.
- Figure 6 is another cross-sectional view of the guidewire in Figure 5 showing the distal section of the guidewire in a second position having an enlarged profile.
- Figure 7 is a cross-sectional view of the distal section of an articulating guidewire in accordance with a third embodiment of the present invention, wherein the guidewire is shown in a first position having a reduced profile.
- Figure 8 is a plan view of the guidewire in Figure 7 showing a plurality of openings circumferentially disposed about a distal section of the guidewire.
- Figure 9 is another cross-sectional view of the guidewire in Figure 7 showing the distal section of the guidewire in a second position having an enlarged profile.
- Figure 10 is a cross-sectional view of a distal section of an articulating guidewire in accordance with a fourth embodiment of the present invention, wherein the guidewire is shown in a first position having a reduced profile.
- Figure 11 is another cross-sectional view of the guidewire in Figure 10 showing the distal section of the guidewire in a second position having an enlarged profile.
- Figure 12 is a cross-sectional view of a distal section of an articulating guidewire in accordance with a fifth embodiment of the present invention, wherein the guidewire is shown in a first position having a reduced profile.
- Figure 13 is another cross-sectional view of the guidewire in Figure 12 showing the distal section of the guidewire in a second position having an enlarged profile.
- Figure 1 is a plan view of an articulating guidewire 30 in accordance with a first embodiment of the present invention.
- Guidewire 30 includes an elongated core wire 10 having a relatively stiff proximal section 12, and relatively flexible distal section 14.
- core wire 10 has a relatively large profile on proximal section 12 which tapers to a smaller profile from point 16 to point 18, and again at point 20 to point 22.
- Core wire 10 may have any number of tapering sections disposed thereon without deviating from the scope of the invention. In one implementation of the present invention (not shown), core wire 10 may continuously taper from proximal section 12 to distal section 14.
- Wire tip 32 Disposed on distal section 14 of core wire 10 is a wire tip 32.
- Wire tip 32 has a rounded distal end 34, and is generally circular in cross-sectional area.
- Wire tip 32 can be atraumatic for reduced tissue damage during advancement of the guidewire.
- wire tip 32 can be comprised of a substantially hard material.
- guidewire 30 also includes a tubular member 26 and a spring coil 24, both moveable about distal section 14 of core wire 10.
- Tubular member 26 may have a length substantially similar to the length of core wire 10.
- tubular member 26 may have a length substantially shorter than the length of core wire 10.
- the outer diameter of tubular member 26 is adapted to permit an intravascular device such as an embolic protection filter to slide thereon.
- spring coil 24 is adapted to have a reduced profile in a first position, and an enlarged profile in a second position.
- spring coil 24 In the first (i.e. reduced profile) position, spring coil 24 has an outer diameter which is substantially similar to the outer diameter of tubular member 26, facilitating placement of guidewire 30 beyond a lesion or other protrusion within the vasculature with minimal interference.
- spring coil 24 In the second (i.e. enlarged profile) position, spring coil 24 has an outer diameter greater than the outer diameter of tubular member 26, allowing spring coil 24 to function as a distal stop.
- Proximal locking hub 28 is any suitable and any commercially available locking mechanism that can be configured to lock tubular member 26 to core wire 10.
- FIG. 2 is a cross-sectional view of the distal section 14 of the guidewire illustrated in Figure 1.
- Tubular member 26 has a proximal end (not shown) and a distal end 40.
- a shoulder 36 disposed on the proximal end of wire tip 32 is adapted to prevent tubular member 26 and spring coil 24 from sliding off the distal end of core wire 10.
- spring coil 24 Abutting the distal end 40 of tubular member 26, and the shoulder 36 of wire tip 32, is spring coil 24.
- spring coil 24 has one or more coils helically disposed about a portion of core wire 10. The distal end of spring coil 24 may be attached to the shoulder 36 of wire tip 32. Similarly, the proximal end of spring coil 24 may be attached to the distal end 40 of tubular member 26. Attachment of spring coil 24 to either shoulder 36 or tubular member 24 may be accomplished by solder, braze, adhesive or any other suitable attachment means.
- guidewire 30 can be inserted through a guide catheter into the body and placed at a desired location distal a lesion.
- Tubular member 26 is then advanced distally, as shown in Figure 3, causing spring coil 24 to compress axially and expand in an outward direction to form a distal stop.
- a embolic protection filter 2 can then be advanced to a desired location along the guidewire to capture embolic debris dislodged during the procedure.
- tubular member 26 may be rotated about its major axis in either a clockwise or counterclockwise direction, depending on the disposition of the coils, causing spring coil 24 to expand radially and form a distal stop.
- a friction fit between the inner diameter of filter 2 and the outer diameter of tubular member 26 can be utilized to actuate spring coil 24.
- a friction fit between the inner diameter of tubular member 26 and the outer diameter of core wire 10 can also be utilized as an alternative to proximal locking hub 28. This factional fit is adapted to permit motion of the tubular member 26 along core wire 10 only when a sufficient force is applied to tubular member 26 by the physician.
- a locking mechanism can be employed on the guidewire to prevent undesired movement of spring coil 24, once guidewire 30 has been articulated.
- the locking mechanism can be comprised of an enlarged outer diameter section 42 disposed on core wire 10 corresponding in size and shape to a reduced inner diameter portion 44 disposed on tubular member 26.
- the enlarged diameter section 42 locks into the reduced inner diameter section 44, thereby preventing tubular member 26 from retracting proximally.
- a factional fit and/or locking mechanism are described with respect to the exemplary embodiments illustrated in Figures 1-4, these features are not limited to those embodiments. Instead, a factional fit and/or locking mechanism may be utilized in conjunction with any embodiment to prevent the tip from reverting to a collapsed position once the guidewire has been articulated.
- Figures 5 and 6 are cross-sectional views of the distal section 114 of an articulating guidewire in accordance with an additional embodiment of the present invention.
- an accordion-shaped polymeric tube 124 can be utilized as a distal stop when actuated by a tubular member 126.
- Polymeric tube 124 can be attached proximally to distal end 140 of tubular member 126, and distally to shoulder 136 of wire tip 132.
- tubular member 126 is advanced distally, forcing polymeric tube 124 to compress axially and expand in an outward direction.
- a embolic protection filter can then be advanced along tubular member 126 until the distal end of the filter abuts a portion of the outwardly expanded polymeric tube 124.
- Figures 7-9 illustrate yet another exemplary embodiment in accordance with the present invention.
- a tubular member 224 having a proximal end 238 and a distal end 240 is moveable about core wire 10.
- Tubular member 224 includes a distal section 252 which expands outwardly when compressed axially.
- distal section 252 includes a plurality of openings 250 circumferentially disposed about tubular member 224.
- the supports 254 between the openings 250 are biased to displace in an outward direction when compressed axially.
- the supports 254 are compressed axially and displace in an outward direction, creating a distal stop.
- Figures 10 and 11 show another exemplary embodiment in accordance with the present invention.
- an articulating guidewire is comprised of an elongated core wire 10, a tubular segment 326 having proximal end 338 and distal end 340, an actuatable tip 324, and a wire tip 332.
- a portion of tip 324 is y adapted to expand in an outward direction when tubular segment 326 is advanced distally against the proximal end thereof.
- Tip 324 may be comprised of any number of suitable polymeric materials such as polyethylene or polystyrene.
- an axially stiff pushing member 356 having a handle (not shown) disposed proximally thereof is shown attached to the proximal end 338 of tubular segment 326.
- the operator advances tubular segment 326 distally against tip 324 with the aid of pushing member 356, causing tip 324 to expand in the outward direction, as shown in Figure 11.
- Figures 12 and 13 illustrate yet another embodiment in accordance with the present invention employing a mesh sleeve.
- the distal section 414 of an articulating guidewire comprises an elongated core wire 10, a tubular segment 426 having a proximal end 438 and distal end 440, a wire tip 432, and an expandable mesh sleeve 424.
- the mesh sleeve 424 can be attached proximally to distal end 440 of tubular segment 426, and distally at proximal end 436 of wire tip 432.
- the mesh sleeve is adapted to expand outwardly when compressed axially.
- Mesh sleeve 424 can be comprised of any suitable material(s) such as DACRON, which is available from E. I. du Pont de Nemours and Company in Wilmington, Delaware.
- DACRON is a synthetic polyester material used in many medical procedures for its strength and biocompatibility.
- the operator can advance tubular segment 426 distally, causing the mesh sleeve 424 to expand outwardly to form a distal stop along the guidewire.
- a frictional fit and/or locking mechanism can be utilized to prevent proximal motion of tubular member 426 once the mesh sleeve has been expanded to the second position.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT03743193T ATE480285T1 (en) | 2002-02-26 | 2003-02-21 | GUIDE WIRE AS EMBOLIC PROTECTION WITH ACTIVATED STOP AND FILTER |
DE60334083T DE60334083D1 (en) | 2002-02-26 | 2003-02-21 | GUIDE WIRE AS EMBOLIC PROTECTION WITH ACTIVATABLE STOP AND FILTER |
AU2003216365A AU2003216365A1 (en) | 2002-02-26 | 2003-02-21 | Guidewire for embolic protection comprising an activatable stop and methods of use |
EP03743193A EP1487526B1 (en) | 2002-02-26 | 2003-02-21 | Guidewire for embolic protection comprising an activatable stop and a filter |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/083,288 | 2002-02-26 | ||
US10/083,288 US7118539B2 (en) | 2002-02-26 | 2002-02-26 | Articulating guide wire for embolic protection and methods of use |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003072179A1 true WO2003072179A1 (en) | 2003-09-04 |
Family
ID=27753274
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2003/005412 WO2003072179A1 (en) | 2002-02-26 | 2003-02-21 | Guidewire for embolic protection comprising an activatable stop and methods of use |
Country Status (6)
Country | Link |
---|---|
US (2) | US7118539B2 (en) |
EP (1) | EP1487526B1 (en) |
AT (1) | ATE480285T1 (en) |
AU (1) | AU2003216365A1 (en) |
DE (1) | DE60334083D1 (en) |
WO (1) | WO2003072179A1 (en) |
Cited By (3)
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US8002715B2 (en) | 2008-05-30 | 2011-08-23 | Boston Scientific Scimed, Inc. | Medical device including a polymer sleeve and a coil wound into the polymer sleeve |
US9198665B2 (en) | 2004-09-22 | 2015-12-01 | Covidien Lp | Micro-spiral implantation device |
US9289215B2 (en) | 2007-03-13 | 2016-03-22 | Covidien Lp | Implant including a coil and a stretch-resistant member |
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2003
- 2003-02-21 DE DE60334083T patent/DE60334083D1/en not_active Expired - Lifetime
- 2003-02-21 EP EP03743193A patent/EP1487526B1/en not_active Expired - Lifetime
- 2003-02-21 AU AU2003216365A patent/AU2003216365A1/en not_active Abandoned
- 2003-02-21 WO PCT/US2003/005412 patent/WO2003072179A1/en not_active Application Discontinuation
- 2003-02-21 AT AT03743193T patent/ATE480285T1/en not_active IP Right Cessation
-
2006
- 2006-08-23 US US11/466,758 patent/US20070021775A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0486157A2 (en) * | 1990-10-25 | 1992-05-20 | C.R. Bard, Inc. | Improvements in guidewires and catheters usable therewith |
US20020128678A1 (en) * | 2001-03-06 | 2002-09-12 | Scimed Life Systems, Inc. | Wire and lock mechanism |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9198665B2 (en) | 2004-09-22 | 2015-12-01 | Covidien Lp | Micro-spiral implantation device |
US9289215B2 (en) | 2007-03-13 | 2016-03-22 | Covidien Lp | Implant including a coil and a stretch-resistant member |
US8002715B2 (en) | 2008-05-30 | 2011-08-23 | Boston Scientific Scimed, Inc. | Medical device including a polymer sleeve and a coil wound into the polymer sleeve |
Also Published As
Publication number | Publication date |
---|---|
EP1487526A1 (en) | 2004-12-22 |
US7118539B2 (en) | 2006-10-10 |
EP1487526B1 (en) | 2010-09-08 |
US20070021775A1 (en) | 2007-01-25 |
DE60334083D1 (en) | 2010-10-21 |
US20030163064A1 (en) | 2003-08-28 |
ATE480285T1 (en) | 2010-09-15 |
AU2003216365A1 (en) | 2003-09-09 |
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