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Surface modified expanded polytetrafluoroethylene devices and methods of producing the same

  • US 6,780,497 B1
  • Filed: 08/05/1999
  • Issued: 08/24/2004
  • Est. Priority Date: 08/05/1999
  • Status: Expired due to Term
First Claim
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1. A material comprising:

  • a surface comprising expanded PTFE having a node and fibril microstructure;

    the surface having a number of node clusters, said node dusters comprising multiple nodes interconnected by fibrils, and gnarled nodes situated between the node clusters; and

    said gnarled nodes having a protruding length and being substantially devoid of fibrils along the protruding length.

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