Method of preparing a vascular graft prosthesis
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United States of America Patent
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-
Mar 3, 1987
Issued Date -
N/A
app pub date -
Apr 26, 1985
filing date -
Aug 3, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A ribbed, porous tube suitable for use as a vascular graft prosthesis is prepared by scoring a stretched or unstretched tube of PTFE, stretching the tube at 200.degree.-320.degree. C. to develop the desired porosity, and heat setting the scored, stretched tube at 327.degree.-450.degree. C. while restraining the tube from axial shrinkage.
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