COATED IMPLANTABLE MEDICAL DEVICE
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United States of America Patent
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Issued Date -
Jun 4, 2015
app pub date -
Feb 13, 2015
filing date -
May 16, 1996
priority date (Note) -
Abandoned
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Abstract
Bioactive-coated medical devices are provided, including coated vascular stents. The medical device coating can include a coating layer posited over at least a portion of the medical device surface, and can include a butyl methacrylate polymer or an ethylene-vinyl acetate copolymer in combination with a bioactive material that can function as both an immunosuppressive agent and an antiproliferative agent. Optionally, multilayer coatings can further include an adhesion promoting layer comprising parylene positioned between the coating layer and the medical device surface, a porous layer comprising butyl methacrylate positioned over at least a portion of the coating layer, or both. The coating layer preferably comprises between about 0.5 and 2.0 μg/mm2 of the bioactive material on the outer surface of the medical device. The bioactive material can be absorbed into the coating layer, which can have a thickness of between about 0.5 μm to about 5 μm.
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