Method of forming a vascular prosthetic structure including expanded PTFE and graphite
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United States of America Patent
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Sep 21, 1999
Issued Date -
N/A
app pub date -
Jun 6, 1995
filing date -
Oct 24, 1974
priority date (Note) -
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Abstract
A method of forming a vascular prosthetic structure, including steps of: mixing polytetrafluoroethylene resin with graphite powder to create a mixture; compacting the mixture to form a preform; extruding the preform to form an extrudate, expanding the extrudate to form an expanded structure having a plurality of irregularly spaced nodes interconnected by fibrils; and sintering the expanded structure to form the vascular prosthetic structure.
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