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Skewed nodal-fibril ePTFE structure

  • US 7,785,363 B2
  • Filed: 08/15/2007
  • Issued: 08/31/2010
  • Est. Priority Date: 08/15/2007
  • Status: Expired due to Fees
First Claim
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1. An ePTFE structure comprising an ePTFE tubular structure having opposite ends and a longitudinal axis, said ePTFE tubular structure being formed by rotating said opposite ends relative to one another in a direction of rotation about said longitudinal axis, said ePTFE tubular structure comprising a node and fibril micro-structure, wherein the node and fibril micro-structure comprises nodes and fibrils,wherein each node comprises a longitudinal axis therethrough, in which substantially all of said fibrils are longitudinally oriented in said direction of rotation, wherein the direction of rotation is oblique to the longitudinal axis of said tubular structure, wherein the longitudinal axis of each nodes is perpendicular to the longitudinal axis of the tubular structure, and the fibrils are rotated relative to the nodes and the longitudinal axis.

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