EXCHANGEABLE DELIVERY SYSTEM WITH DISTAL PROTECTION

• US 20100125327A1
• Filed: 01/12/2010
• Published: 05/20/2010
• Est. Priority Date: 03/24/2005
• Status: Active Grant

• Current Assignee: Cook Incorporated (Cook Group Incorporated)
• Original Assignee: Cook Incorporated (Cook Group Incorporated)
• Inventors: Agnew, Charles W.
• Granted Patent: US 8,460,359 B2
• Time in Patent Office: Days
• US Class Current: 623/1.110
• CPC Class Codes: A61B 2017/1205 Introduction devices
• CPC Class Codes: A61B 2017/12054 Details concerning the detachment of the occluding device from the introduction device
• CPC Class Codes: A61F 2/013 Distal protection devices, i.e. devices placed distally in combination with another endovascular procedure, e.g. angioplasty or stenting
• CPC Class Codes: A61F 2/2412 with soft flexible valve members, e.g. tissue valves shaped like natural valves check valves with flexible valve members in general F16K15/14
• CPC Class Codes: A61F 2/2475 Venous valves
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2/966 with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
• CPC Class Codes: A61F 2002/015 Stop means therefor
• CPC Class Codes: A61F 2002/018 made from tubes or sheets of material, e.g. by etching or laser-cutting
• CPC Class Codes: A61F 2002/9665 with additional retaining means
• CPC Class Codes: A61F 2220/0016 with sharp anchoring protrusions, e.g. barbs, pins, spikes
• CPC Class Codes: A61F 2230/0006 circular
• CPC Class Codes: A61F 2230/0069 cylindrical

Abstract

Medical device delivery systems that include a distal protection feature are provided. A distal tip member that includes a distal protection device and a mounting region for a self-expandable, intraluminal medical device is slidably disposed within a passageway defined by a tubular member.

Claims

1. A medical device delivery system for deploying an intraluminal medical device in a body vessel, said medical device delivery system comprising:

an elongate tubular member comprising first proximal and distal ends and a circumferential wall having an inner surface defining a passageway between the first proximal and distal ends, the passageway having a distal cavity and a protrusion disposed on the inner surface at the distal end;

a distal tip member slidably disposed within the passageway and having proximal and distal portions and a separable junction joining the proximal and distal portions, the proximal portion defining a mounting region;

a distal protection device disposed on the distal portion of the distal tip member, the distal protection device comprising an expandable structure adapted to be deployed from within the passageway into said body vessel and to capture solid matter flowing through said body vessel; and

a self-expandable intraluminal medical device disposed on the mounting region of the distal tip member.

2. The medical device delivery system according to claim 1, wherein the proximal portion includes second proximal and distal ends and the distal tip member includes a proximal flange disposed on the second proximal end and adapted to engage the protrusion.

3. The medical device delivery system according to claim 2, further comprising a distal flange disposed on the second distal end, the distal flange adapted to temporarily engage the protrusion to temporarily impede distally directed axial movement of the distal tip member in the passageway.

4. The medical device delivery system according to claim 3, wherein the distal flange comprises a pliable material such that the distal flange is able to overcome the impedence provided by the temporary engagement between the distal flange and the protrusion.

5. The medical device delivery system according to claim 3, wherein the proximal flange comprises a rigid material such that the engagement between the proximal flange and the protrusion provides a mechanical stop to distally directed axial movement of the distal tip member in the passageway.

6. The medical device delivery system according to claim 1, wherein the circumferential wall defines an exchange port extending through the circumferential wall and providing access to the passageway.

7. The medical device delivery system according to claim 1, wherein the self-expandable intraluminal medical device comprises a stent.

8. The medical device delivery system according to claim 1, wherein the self-expandable intraluminal medical device comprises a prosthetic valve.

9. The medical device delivery system according to claim 8, wherein the prosthetic valve comprises a prosthetic venous valve.

10. The medical device delivery system according to claim 8, wherein the prosthetic valve comprises a prosthetic heart valve.

11. The medical device delivery system according to claim 1, wherein the self-expandable intraluminal medical device comprises a self-expandable filter.

12. The medical device delivery system according to claim 1, wherein the self-expandable intraluminal medical device comprises a vessel occluder.

13. The medical device delivery system according to claim 1, wherein the elongate tubular member has a first length and the distal tip member has a second length;

and

wherein the first length is greater than the second length.

14. The medical device delivery system according to claim 13, wherein the distal tip member is at least partially slidably disposed within the distal cavity.

15. A medical device delivery system, for deploying an intraluminal medical device in a body vessel, said medical device delivery system comprising:

an elongate tubular member comprising first proximal and distal ends and a circumferential wall having an inner surface defining a passageway between the first proximal and distal ends, the passageway having a distal cavity and a protrusion disposed on the inner surface at the distal end;

a distal tip member slidably disposed within the distal cavity and having proximal and distal portions and a separable junction joining the proximal and distal portions, the proximal portion defining a mounting region and having second proximal and distal ends, a proximal flange disposed on the second proximal end and adapted to temporarily engage the protrusion and a distal flange disposed on the second distal end and adapted to temporarily engage the protrusion;

a distal protection device disposed on the distal portion of the distal tip member, the distal protection device comprising an expandable structure adapted to be deployed from within the passageway into said body vessel and to capture solid matter flowing through said body vessel; and

a self-expandable intraluminal medical device disposed on the mounting region of the distal tip member;

wherein the elongate tubular member has a first length and the distal tip member has a second length; and

wherein the first length is greater than the second length.

16. The medical device delivery system according to claim 15, wherein the distal flange comprises a pliable material such that the distal flange is able to overcome the impedence provided by the temporary engagement between the distal flange and the protrusion.

17. The medical device delivery system according to claim 15, wherein the proximal flange comprises a rigid material such that the engagement between the proximal flange and the protrusion provides a mechanical stop to distally directed axial movement of the distal tip member within the passageway.

18. The medical device delivery system according to claim 15, wherein the self-expandable intraluminal medical device comprises a stent.

19. The medical device delivery system according to claim 15, wherein the self-expandable intraluminal medical device comprises a prosthetic valve.

20. A medical device delivery system, for deploying an intraluminal medical device in a body vessel, said medical device delivery system comprising:

an elongate tubular member comprising first proximal and distal ends and a circumferential wall having an inner surface defining a passageway between the first proximal and distal ends, the passageway having a distal cavity and a protrusion disposed on the inner surface at the distal end;

a distal tip member slidably disposed within the distal cavity and having separate proximal and distal portions and a separable junction joining the proximal and distal portions, the proximal portion defining a mounting region and having second proximal and distal ends, a proximal flange disposed on the second proximal end and adapted to temporarily engage the protrusion with distally directed axial movement of the distal tip member within the passageway, and a distal flange disposed on the second distal end and adapted to temporarily engage the protrusion with distally directed axial movement of the distal tip member within the passageway;

a distal protection device disposed on the distal portion of the distal tip member, the distal protection device comprising an expandable structure adapted to be deployed from within the passageway into said body vessel and to capture solid matter flowing through said body vessel; and

a self-expandable intraluminal medical device disposed on the mounting region of the distal tip member;

wherein the elongate tubular member has a first length and the distal tip member has a second length;

wherein the first length is greater than the second length;

wherein the distal flange comprises a pliable material such that the distal flange is able to overcome the impedence provided by the temporary engagement between the distal flange and the protrusion; and

wherein the proximal flange comprises a rigid material such that the engagement between the proximal flange and the protrusion provides a mechanical stop to distally directed axial movement of the distal tip member within the passageway.