Intraluminal Stent Graft

• US 20100222874A1
• Filed: 05/17/2010
• Published: 09/02/2010
• 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 8,197,531 B2
• Time in Patent Office: Days
• US Class Current: 623/1.440
• 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 a 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 graft comprising:

a) a tubular, diametrically adjustable stent having an exterior surface, a luminal surface and a wall

b) a tubular covering affixed to the tubular diametrically adjustable stent, the tubular diametrically adjustable stent having an enlarged diameter to a collapsed diameter, said tubular covering being less than about 0.10 mm thick, and said tubular covering having an exterior surface, a luminal surface and a seam extending from the exterior surface through to the luminal surface of the tubular covering.

2. A tubular intraluminal graft of claim 1 wherein the tubular covering is affixed to the exterior surface

3. A tubular intraluminal graft of claim 1 wherein the tubular covering is affixed to the luminal surface.

4. A tubular intraluminal graft of claim 1 wherein the tubular covering is affixed to both the exterior and luminal surfaces

5. A tubular intraluminal graft according to claim 1, wherein the tubular diametrically adjustable stent is a self-expanding stent.

6. A tubular intraluminal graft according to claim 1, wherein the tubular diametrically adjustable stent is a Nitinol stent.

7. A tubular intraluminal graft according to claim 1, wherein the tubular covering is of porous expanded PTFE.

8. A tubular intraluminal graft according to claim 7, wherein the tubular covering of porous expanded polytetrafluoroethylene is adhesively affixed to the tubular diametrically adjustable stent.

9. A tubular intraluminal graft according to claim 8, wherein the tubular covering is adhesively affixed to the luminal surface of the tubular diametrically adjustable stent.

10. A tubular intraluminal graft according to claim 1, wherein the tubular covering is affixed to the exterior surface of the tubular diametrically adjustable stent.

11. A tubular intraluminal graft according to claim 10, wherein the tubular covering is sutured to the tubular diametrically adjustable stent.

12. A tubular intraluminal graft according to claim 11, wherein the tubular diametrically adjustable stent is sutured to a longitudinal end of the tubular covering.

13. A tubular intraluminal graft according to claim 1, wherein the tubular covering is affixed to the luminal surface of the tubular diametrically adjustable stent.

14. A tubular intraluminal graft according to claim 13, wherein the tubular covering is sutured to the tubular diametrically adjustable stent.

15. A tubular intraluminal graft according to claim 14, wherein the tubular diametrically adjustable stent is sutured to a longitudinal end of the tubular covering.

16. A tubular intraluminal graft according to claim 1, wherein said enlarged diameter is at least 1.5 times the collapsed diameter.