Claims
- 1. A flexible covered stent, comprising:
a stent having a wall defining a luminal surface and an abluminal surface; a first tubular layer of expanded polytetrafluoroethylene, substantially covering said abluminal surface of said stent; a second tubular layer of expanded polytetrafluoroethylene having a length less than a length of said first tubular layer and covering a first region of said luminal surface of said stent, wherein said second layer is bonded to said first layer through openings in said wall of said stent; and a third tubular layer of expanded polytetrafluoroethylene, having a length less than a length of said first tubular layer and covering a second region of said luminal surface of said stent, wherein said third layer is bonded to said first layer through openings in said wall of said stent; wherein a third region of said luminal surface of said stent is located between said first and second regions of said luminal surface of said stent, said third region not being covered by either said second or said third tubular layer.
- 2. The flexible covered stent according to claim 1, wherein said length of said first layer is less than the longitudinal length of said stent such that a first and second extremity of said stent are not covered by said first tubular layer, wherein said uncovered extremities flare outward with respect to a longitudinal axis of the flexible covered stent upon expansion thereof.
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation of application Ser. No. 10/412,138, filed Apr. 11, 2003, now U.S. Pat. No. ______, which is a continuation of application Ser. No. 09/430,154, filed Oct. 29, 1999, now U.S. Pat. No. 6,579,314, which claims the benefit of provisional application Serial No. 60/118,269, filed Feb. 2, 1999, and which is a continuation-in-part of application Ser. No. 08/401,871, filed Mar. 10, 1995, now U.S. Pat. No. 6,124,523. The entirety of each of these applications is expressly incorporated by reference as if fully set forth herein.
Provisional Applications (1)
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Number |
Date |
Country |
|
60118269 |
Feb 1999 |
US |
Continuations (2)
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Number |
Date |
Country |
Parent |
10412138 |
Apr 2003 |
US |
Child |
10836492 |
Apr 2004 |
US |
Parent |
09430154 |
Oct 1999 |
US |
Child |
10412138 |
Apr 2003 |
US |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
08401871 |
Mar 1995 |
US |
Child |
10412138 |
|
US |