Prosthesis for tensile-load-carrying tissue and method of manufacture
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United States of America Patent
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Sep 17, 1991
Issued Date -
N/A
app pub date -
Aug 16, 1990
filing date -
Sep 10, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The inventive article is a ligament or tendon prosthesis having multiple longitudinally parallel strands of microporous expanded polytetrafluoroethylene, the individual strands having an average porosity greater than 30% in the areas requiring tissue ingrowth. Additionally, strand dimensions and microstructure are selected so that tissue can penetrate throughout. The prosthesis is formed from multiple loops of a single continuous filament. Densified eyelets are formed in the loop for mounting to bone. The strands are twisted 180.degree. or arranged in a loose braid about the prothesis axis for improved load distribution during bending of the prosthesis.
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