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Radially expandable polytetrafluoroethylene

  • US 6,620,190 B1
  • Filed: 12/26/1996
  • Issued: 09/16/2003
  • Est. Priority Date: 05/06/1994
  • Status: Expired due to Term
First Claim
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1. An assembly for treating a body vessel, comprising:

  • a radially expandable stent, having an inner surface and an outer surface; and

    a tubular liner consisting of expanded polytetrafluoroethylene, having a microstructure characterized by nodes interconnected by fibrils, wherein the liner is positioned along a length of the stent, covering at least one of the inner and outer surfaces;

    wherein the assembly is permanently radially expandable in vivo from a first diameter to a larger second diameter, and wherein the tubular liner maintains structural integrity at the second diameter up to approximately 100% of the first diameter.

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