Stent with sandwich type coating
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United States of America Patent
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N/A
Issued Date -
Oct 28, 2004
app pub date -
Apr 20, 2004
filing date -
Apr 22, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The stent having a sandwich type coating of the present invention provides multiple coating layers, with the first coating layer providing adhesion to the stent frame, the second coating layer providing the main reservoir for drugs or therapeutic agents, and the third coating layer providing a protective coating. The first coating layer or third coating layer can also include drugs or therapeutic agents. The first coating layer can be an organic silane or polymer material. The second and third coating layers can be biodegradable or non-biodegradable polymers, with the second and third coating layers made of the same or different polymers. Different therapies and delivery timing can be achieved by selection of different materials and therapeutic agents for the different coating layers.
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