Prosthesis formation having solid and porous polymeric components
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United States of America Patent
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Jun 19, 1984
Issued Date -
N/A
app pub date -
Aug 10, 1981
filing date -
May 7, 1980
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A prosthesis having a porous polymeric coating over a non-porous polymeric substrate is disclosed. The porous polymeric coating is constructed by forming a mass of randomly arranged fibers of polymeric material in contact with a non-porous polymeric substrate of a compatible material. The entire prosthesis and mass of fibers is enclosed in a mold with interior dimensions conforming to the intended shape of the article. The mold is then subjected to an elevated temperature for sufficient time to sinter the fibers of the mass to each other and to the underlying substrate yet leave a pore volume of about 50%. The preformed material is ultra-high molecular weight polyethylene. Preferred sintering conditions are also disclosed.
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