Method for pretreating the surface of a medical device
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United States of America Patent
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Sep 19, 1995
Grant Date -
N/A
app pub date -
Mar 31, 1992
filing date -
May 21, 1991
priority date (Note) -
Expired
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Abstract
A method for pretreating the surface of a medical device, and of applying a biological coating in a further step, uses the plasma polymerization technique or the plasma grafting technique. A functional monomer, i.e. a monomer with a functional group, or a mixture of a pure monomer and a substance which can provide the required functional groups under spark discharge or under the influence of charge carriers, results in a polymer coating with free functional groups which may react with the biological coating to provide optimum adhesion of the biological coating. The process is carried out in a pressure-tight chamber with an inlet for the functional monomer under low pressure and electromagnetic radiation provided by a radiation source.
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