Medical device delivery systems

• US 20050049609A1
• Filed: 08/06/2004
• Published: 03/03/2005
• Est. Priority Date: 08/06/2004
• Status: Active Grant

• Current Assignee: Boston Scientific Scimed, Inc. (Boston Scientific Corporation)
• Original Assignee: Scimed Life Systems Incorporated (Boston Scientific Corporation)
• Inventors: Gunderson, Richard C., Moberg, John R., Pederson, Gary
• Granted Patent: US 8,109,983 B2
• Time in Patent Office: Days
• US Class Current: 606/108
• 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

Abstract

Medical device delivery systems, as well as related methods and components, are disclosed.

Claims

1. An implantable endoprosthesis delivery system, comprising:

an inner member having a first region with an outer circumference having a polygonal transverse cross-section; and

an outer member at least partially surrounding the inner member,

wherein the inner member and the outer member are configured so that an implantable medical endoprosthesis can be disposed therebetween.

2. The system of claim 1, wherein the polygonal transverse cross-section includes at least three sides.

3. The system of claim 1, wherein the polygonal transverse cross-section is a triangular cross-section, a rectangular cross-section, a square cross-section, a pentagonal cross-section, a hexagonal cross-section, a heptagonal cross-section, or an octagonal cross-section.

4. The system of claim 1, wherein the polygonal transverse cross-section is a hexagonal cross-section.

5. The system of claim 1, wherein the polygonal transverse cross-section is an irregular polygonal cross-section.

6. The system of claim 1, wherein the inner member has a second region with an outer circumference having a non-polygonal transverse cross-section.

7. The system of claim 6, wherein the non-polygonal transverse cross-section is a circular cross-section.

8. The system of claim 6, wherein the second region of the inner member is distal to the first region of the inner member.

9. The system of claim 6, wherein the system is configured so that an implantable medical endoprosthesis can be disposed between the outer member and the outer circumference of the second region of the inner member.

10. The system of claim 1, wherein the outer circumference of the first region of the inner member contacts the outer member.

11. The system of claim 10, wherein the inner member and the outer member are configured so that fluid can flow between the outer member and the outer circumference of the first region of the inner member.

12. The system of claim 10, wherein a first area is defined by spaces between the outer circumference of the first region of the inner member and the outer member, a second area is defined by an inner circumference of the outer member, and the first area is at most about 50% of the second area.

13. The system of claim 1, wherein a first area is defined by the outer circumference of the first region of the inner member, a second area is defined by an inner circumference of the outer member, and the first area is at least about 50% of the second area.

14. The system of claim 13, wherein the first area is at least about 60% of the second area.

15. The system of claim 1, wherein the implantable medical endoprosthesis capable of being disposed between the inner member and the outer member is a stent, a stent-graft, or a vena cava filter.

16. The system of claim 1, wherein the implantable medical endoprosthesis capable of being disposed between the inner member and the outer member is a self-expanding medical endoprosthesis or a balloon expandable medical endoprosthesis.

17. The system of claim 1, further comprising the implantable medical endoprosthesis between the inner member and the outer member.

18. The system of claim 1, wherein the inner member defines a lumen having a polygonal transverse cross-section.

19. The system of claim 18, wherein a shape of the polygonal transverse cross-section of the lumen is the same as a shape of the polygonal transverse cross-section of the outer circumference of the first region of the inner member.

20. The system of claim 18, wherein a shape of the polygonal transverse cross-section of the lumen is different from a shape of the polygonal transverse cross-section of the outer circumference of the first region of the inner member.

24. A method of implanting an endoprosthesis in a lumen of a subject, the method comprising:

disposing the system of claim 1 in the lumen of the subject.

21. An inner member of an implantable endoprosthesis delivery system, the inner member having a first region with an outer circumference having a polygonal transverse cross-section and a second region with an outer circumference having a non-polygonal transverse cross-section, the inner member being configured so that, when an outer member at least partially surrounds the inner member, an implantable medical endoprosthesis can be disposed between the inner member and the outer member.

25. A method of implanting an endoprosthesis in a lumen of a subject, the method comprising:

disposing the inner member of claim 21 in the lumen of the subject.

22. A system, comprising:

an inner member having a first region with an outer circumference having a polygonal transverse cross-section and a second region connected to the first region; and

a stent bumper carried by the second region of the inner member.

23. The system of claim 22, wherein the second region of the inner member has an outer circumference having a non-polygonal transverse cross-section.

26. A method of implanting an endoprosthesis in a lumen of a subject, the method comprising:

disposing the system of claim 22 in the lumen of the subject.

27. A system, comprising:

an inner member having a first region with an outer circumference- having a polygonal transverse cross-section; and

an outer member,

wherein;

the inner member and the outer member are configured so that an implantable medical endoprosthesis can be positioned therebetween;

a first portion of the outer circumference of the first region of the inner member is in contact with the outer member; and

a second portion of the outer circumference of the first region of the inner member is not in contact with the outer member.

28. A system, comprising:

an inner member having a first region with an outer circumference having a polygonal transverse cross-section; and

an outer member,

wherein;

the inner member and the outer member are configured so that an implantable medical endoprosthesis can be positioned therebetween; and

the inner member is configured to support at least a portion of the outer member and to allow fluid flow between the outer member and the outer circumference of the first region of the inner member.