Prosthesis of polymeric material coated with biocompatible carbon
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United States of America Patent
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Dec 6, 1994
Issued Date -
N/A
app pub date -
Aug 18, 1992
filing date -
Dec 12, 1986
priority date (Note) -
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Abstract
A prosthetic device which includes a turbostratic biocompatible carbon film firmly adherent to a substrate and having a density of at least 2.1 g/cm.sup.3. The carbon preferably is very thin, e.g. , less than about one micron. The thin carbon biocompatible film covers at least that portion of the substrate which will be in contact with body tissue and/or fluids to insure against physiological rejection and degradation of the prosthetic device. The carbon can be deposited on a variety of substrates, including low temperature substrates, in situ, without adversely affecting the mechanical properties of the substrate. The prosthetic device of the invention is formed by triode sputtering vacuum deposition at a relatively low temperature to achieve the desired results with respect to the deposited carbon and the substrate and with respect to the required adherence therebetween.
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