Intraluminal stent graft

• US 8,221,487 B2
• Filed: 05/17/2010
• Issued: 07/17/2012
• Est. Priority Date: 08/18/1993
• Status: Expired due to Fees

• Current Assignee: W. L. Gore & Associates (W.L. Gore & Associates)
• Original Assignee: W. L. Gore & Associates (W.L. Gore & Associates)
• Inventors: Lewis, James D., Myers, David J., House, Wayne D.
• Primary Examiner(s): Truong, Kevin T
• Application Number:
  US12/781,358
• Publication Number:
  US 20100217375A1
• Time in Patent Office: 792 Days
• Field of Search: 606191-198, 623/1.11, 623/1.13, 623/1.123, 623/1.25, 623/1.36, 623/1.46
• US Class Current: 623/1.13
• 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 PTFE 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. An intraluminal graft comprising:

a) a diametrically adjustable stent having an exterior surface, a luminal surface and a wall, the wall having a multiplicity of openings;

b) a first covering adjacent to the luminal surface of the stent; and

c) a second covering adjacent to the exterior surface of the stent and affixed to the first covering through the wall of the stent,

wherein the second covering adjacent to the exterior surface of the stent is affixed to the first covering through the multiplicity of openings through the wall of the stent.

2. The intraluminal graft of claim 1 wherein the second covering is less than about 0.10 mm thick.

3. The intraluminal graft of claim 1 wherein the polymer forming the first covering is PTFE.

4. The intraluminal graft of claim 1 wherein the polymer forming the second covering is PTFE.

5. The intraluminal graft of claim 1 wherein the diametrically adjustable stent is a self-expanding stent.

6. The intraluminal graft of claim 1, wherein the diametrically adjustable stent is a Nitinol stent.

7. The intraluminal graft of claim 1, wherein the first or second covering is of porous expanded PTFE.

8. The intraluminal graft of claim 1, wherein the second covering adjacent to the exterior surface of the stent is affixed to the first covering through the multiplicity of openings through the wall of the stent via adhesive.

9. The intraluminal graft of claim 1, wherein the second covering adjacent to the exterior surface of the stent is affixed to the first covering through the multiplicity of openings through the wall of the stent via sutures.

10. The intraluminal graft of claim 1 wherein the combined thickness of the first and second coverings is less than about 0.05 mm thick.