Polymeric coating for reducing the rate of release of a therapeutic substance from a stent
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United States of America Patent
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app pub date -
Sep 22, 2006
filing date -
Sep 7, 2001
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Abstract
A stent for delivery of a therapeutic agent is disclosed. The stent includes a polymer coating for reducing the rate of release of the therapeutic agent. The polymer has a crystalline structure wherein the polymer is capable of significantly maintaining the crystalline lattice structure while the therapeutic agent is released from the stent such that the aqueous environment to which the stent is exposed subsequent to the implantation of the stent does not significantly convert the crystalline lattice structure of the polymer to an amorphous structure.
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