Multi-layered poly(tetrafluoroethylene)/elastomer materials useful for in vivo implantation
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United States of America Patent
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Oct 29, 1991
Issued Date -
N/A
app pub date -
Dec 19, 1988
filing date -
Apr 28, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A vascular graft having a composite structure prepared by wrapping about the external surface of a tube having one or more layers of polytetrafluoroethylene or a polytetrafluoroethylene-elastomeric polymer blend, either alone or in combination, an elastic fiber, while maintaining the fiber under tension. The elastic fibers can be wound about the entire length of the tube while being maintained under the same of different degrees of tension. Furthermore, the elastic fibers may be wound about the tube under a higher degree of tension along locations adjacent the opposite ends the tubing.
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