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Elastomerically impregnated ePTFE to enhance stretch and recovery properties for vascular grafts and coverings

  • US 20060259133A1
  • Filed: 05/09/2006
  • Published: 11/16/2006
  • Est. Priority Date: 06/25/2002
  • Status: Abandoned Application
First Claim
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1. An elastomerically recoverable PTFE material comprising:

  • (a) an ePTFE material defined by nodes and fibrils, said fibrils being in longitudinally compressed state and defining pores of a size sufficient to permit penetration of an elastomeric material; and

    (b) an elastomeric matrix within said pores;

    said compressed fibrils and elastomeric matrix cooperatively permitting longitudinal expansion and elastomeric recovery without plastic deformation of said ePTFE material, wherein said elastomeric matrix is a polycarbonate urethane material having a shore hardness rating between 70A and 75 D.

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