Intraluminal Stent Graft

• US 20100131041A1
• Filed: 01/28/2010
• Published: 05/27/2010
• Est. Priority Date: 08/18/1993
• Status: Active Grant

• Current Assignee: W. L. Gore & Associates (W.L. Gore & Associates)
• Original Assignee: W. L. Gore & Associates (W.L. Gore & Associates)
• Inventors: House, Wayne D., Myers, David J., Lewis, James D.
• Granted Patent: US 8,080,051 B2
• Time in Patent Office: Days
• US Class Current: 623/1.130
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/82 Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents stent-grafts for tubular structures of the body other than blood vessels A61F2/04; stent-grafts for blood vessels A61F2/07; instruments specially adapted for placement or removal of stents or stent-grafts A61F2/95; for closing wounds, or holding wounds closed A61B17/04 - A61B17/115; dilators A61M29/00
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2002/072 Encapsulated stents, e.g. wire or whole stent embedded in lining
• CPC Class Codes: A61F 2002/075 the stent being loosely attached to the graft material, e.g. by stitching
• CPC Class Codes: A61F 2210/0014 using shape memory or superelastic materials, e.g. nitinol
• CPC Class Codes: A61F 2240/001 Designing or manufacturing processes
• CPC Class Codes: A61L 31/10 Macromolecular materials
• CPC Class Codes: C08L 27/18 Homopolymers or copolymers or tetrafluoroethene
• CPC Class Codes: Y10T 156/1005 by inward collapsing of portion of hollow body
• CPC Class Codes: Y10T 156/1033 Flexible sheet to cylinder lamina
• CPC Class Codes: Y10T 29/4998 Combined manufacture including applying or shaping of fluent material
• CPC Class Codes: Y10T 29/49982 Coating

Abstract

A method of making an tubular intraluminal graft in the form of a tubular diametrically adjustable stent having a tubular covering of porous expanded polytetrafluoroethylene which is less than 0.10 mm thick. The covering may be on the exterior surface of the stent, or on the interior surface of the stent, or both. The covering may be affixed to the stent by an adhesive which is preferably fluorinated ethylene propylene.

Claims

1. A tubular intraluminal stent graft comprising:

a) a tubular stent having a wall with a multiplicity of openings, and an exterior surface and a luminal surface;

b) a tubular covering of porous expanded polytetrafluoroethylene film, said covering being provided on at least one surface of the stent and covering at least a portion of the multiplicity of openings;

c) wherein said stent graft includes a non-porous layer of a thermoplastic polymer.

2. A tubular intraluminal stent graft according to claim 1 wherein the thermoplastic polymer comprises a thermoplastic fluoropolymer.

3. A tubular intraluminal stent graft according to claim 2 wherein the thermoplastic fluoropolymer comprises fluorinated ethylene propylene.

4. A tubular intraluminal stent graft according to claim 1 wherein the tubular stent comprises a self expanding stent.

5. A tubular intraluminal stent graft according to claim 4 wherein the self expanding stent comprises nitinol.

6. A tubular intraluminal stent graft according to claim 1 wherein the tubular stent comprises a balloon expandable stent.

7. A tubular intraluminal stent graft according to claim 1 wherein the covering is provided on the luminal surface of the stent.

8. A tubular intraluminal stent graft according to claim 1 wherein the covering is provided on the exterior surface of the stent.

9. A tubular intraluminal stent graft according to claim 1 wherein the covering is provided on the exterior and luminal surfaces of the stent.

10. A tubular intraluminal stent graft comprising:

a) a tubular stent having a wall with a multiplicity of openings, and an exterior surface and a luminal surface;

b) a tubular covering of porous expanded polytetrafluoroethylene film, said covering being provided on at least one surface of the stent and covering at least a portion of the multiplicity of openings;

c) wherein said covering includes a non-porous layer of a thermoplastic polymer.

11. A tubular intraluminal stent graft according to claim 10 wherein the thermoplastic polymer comprises a thermoplastic fluoropolymer.

12. A tubular intraluminal stent graft according to claim 11 wherein the thermoplastic fluoropolymer comprises fluorinated ethylene propylene.

13. A tubular intraluminal stent graft according to claim 10 wherein the tubular stent comprises a self expanding stent.

14. A tubular intraluminal stent graft according to claim 13 wherein the self expanding stent comprises nitinol.

15. A tubular intraluminal stent graft according to claim 10 wherein the tubular stent comprises a balloon expandable stent.

16. A tubular intraluminal stent graft according to claim 10 wherein the covering is provided on the luminal surface of the stent.

17. A tubular intraluminal stent graft according to claim 10 wherein the covering is provided on the exterior surface of the stent.

18. A tubular intraluminal stent graft according to claim 10 wherein the covering is provided on the exterior and luminal surfaces of the stent.

19. A tubular intraluminal stent graft comprising:

a) a tubular stent having a wall with a multiplicity of openings, and an exterior surface and a luminal surface;

b) a tubular covering of porous expanded polytetrafluoroethylene film, said covering being provided on at least one surface of the stent and covering at least a portion of the multiplicity of openings;

c) wherein said film includes a non-porous layer of a thermoplastic polymer.

20. A tubular intraluminal stent graft according to claim 19 wherein the thermoplastic polymer comprises a thermoplastic fluoropolymer.

21. A tubular intraluminal stent graft according to claim 20 wherein the thermoplastic fluoropolymer comprises fluorinated ethylene propylene.

22. A tubular intraluminal stent graft according to claim 19 wherein the tubular stent comprises a self expanding stent.

23. A tubular intraluminal stent graft according to claim 22 wherein the self expanding stent comprises nitinol.

24. A tubular intraluminal stent graft according to claim 19 wherein the tubular stent comprises a balloon expandable stent.

25. A tubular intraluminal stent graft according to claim 19 wherein the covering is provided on the luminal surface of the stent.

26. A tubular intraluminal stent graft according to claim 19 wherein the covering is provided on the exterior surface of the stent.

27. A tubular intraluminal stent graft according to claim 19 wherein the covering is provided on the exterior and luminal surfaces of the stent.