Vascular prostheses composed of polytetrafluoroethylene and process for their production
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United States of America Patent
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Jun 24, 1980
Issued Date -
N/A
app pub date -
Aug 4, 1977
filing date -
Jan 21, 1976
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A vascular prosthesis comprising a tubing of porous polytetrafluoroethylene, the polytetrafluoroethylene tubing having a fibrous structure of nodes and fibers connecting the nodes together and having a structure in which the fibrous structure at the inside surface of the tubing is finer than the fibrous structure at the outside surface of the tubing.
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