Fabrics for heart valve and vascular prostheses and methods of fabricating same
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United States of America Patent
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Mar 4, 1980
Issued Date -
N/A
app pub date -
Apr 28, 1978
filing date -
May 7, 1975
priority date (Note) -
Expired
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Abstract
Prostheses for inadequate or diseased heart valves and blood vessels, formed of fabrics comprising multifilament synthetic yarns. For a heart valve the fabric is supported on a three-lobed frame. During manufacture, the fabric is subjected to a plural step compressive shrinking and crimping process to impart nonisotropic elastic compliance approximating the natural mechanical properties. The resulting composite structures are free of thrombogenic complications.
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