STENT ATTACHMENT FOR ENDOVASCULAR ANEURYSM REPAIR

• US 20100280590A1
• Filed: 06/13/2008
• Published: 11/04/2010
• Est. Priority Date: 06/13/2007
• Status: Active Grant

• Current Assignee: Cook Medical Technologies, LLC (Cook Group Incorporated)
• Original Assignee: Cook Medical Technologies, LLC (Cook Group Incorporated)
• Inventors: Abell, Natalie M., Sun, Jichao, Fearnot, Neal E., Leewood, Alan R., Purdy, James D.
• Granted Patent: US 9,895,217 B2
• Time in Patent Office: Days
• US Class Current: 623/1.13
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/89 the wire-like elements comprising two or more adjacent rings flexibly connected by separate members
• CPC Class Codes: A61F 2002/075 the stent being loosely attached to the graft material, e.g. by stitching
• CPC Class Codes: Y10T 29/49826 Assembling or joining

Abstract

The technology described herein relates to a stent graft and a method of making the stent wherein the stent comprises interconnected struts and is connected to the graft material by applying at least one band of polymer so as to cover at least a portion of at least some of the struts. A stent supported area is created by the stent'"'"'s attachment to the graft material and the at least one band of polymer is applied so as to leave the majority of the stent supported area uncovered by the at least one band of polymer.

Claims

1. A method of making a stent graft, including the steps of:

providing a tubular graft formed of a graft material;

attaching a stent adjacent to a surface of the tubular graft to create a stent supported area of the tubular graft, wherein the stent comprises interconnected struts;

wherein the stent is attached by applying at least one band of polymer so as to cover at least a portion of at least some of the struts and bond with the graft material adjacent the at least a portion of at least some of the struts; and

wherein the at least one band of polymer is applied so as to leave the majority of the stent supported area uncovered by the polymer.

2. A method according to claim 1, wherein the struts comprise at least two elongate portions joined by at least one apex.

3. A method according to claim 2, wherein at least one band of polymer is applied to at least one apex of the stent.

4. A method according to claim 2, wherein at least one band of polymer is applied to at least one elongate portion.

6. A method according to claim 1 wherein the at least one band of polymer transects the interconnected struts.

9. A method according to claim 1, wherein the polymer comprises polyurethane.

11. A method according to claim 1, wherein the stent is placed adjacent to the interior surface of the tubular graft.

12. A method according to claim 1, wherein the stent is placed adjacent to the exterior surface of the tubular graft.

13. A method according to claim 1, wherein the polymer is applied intermittently along at least some of the struts.

14. A method according to claim 1, wherein the polymer is applied continuously along at least some of the struts.

5. (canceled)

7. (canceled)

8. (canceled)

10. (canceled)

15. (canceled)

16. A stent graft comprising a tubular graft formed of a graft material;

a stent attached to a surface of the tubular graft to create a stent supported area, the stent comprising interconnected struts;

wherein the stent is attached to the tubular graft by at least one band of polymer that leaves the majority of the stent supported area uncovered by the at least one band of polymer.

17. A stent graft according to claim 16, wherein the struts comprise at least two elongate portions joined by at least one apex.

18. A stent graft according to claim 17, wherein at least one band of polymer covers at least one apex of the stent.

19. A stent graft according to claim 17, wherein at least one band of polymer covers at least one elongate portion.

21. A stent graft according to claim 16, wherein the at least one band of polymer transects the interconnected struts.

23. A stent graft according to claim 16, wherein the polymer comprises polyurethane.

25. A stent graft according to claim 16, wherein the tubular graft comprises an interior surface and the stent is adjacent to the interior surface.

26. A stent graft according to claim 16, wherein the tubular graft comprises an exterior surface and the stent is adjacent to the exterior surface.

27. A stent graft according to claim 16, wherein the polymer intermittently covers at least some of the struts.

28. A stent graft according to claim 16, wherein the graft material comprises a biocompatible polyester or polyethylene terephthalate.

20. (canceled)

22. (canceled)

24. (canceled)