Methods for fabricating coatings for drug delivery devices having gradient of hydration
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United States of America Patent
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Nov 8, 2011
Grant Date -
Jun 12, 2008
app pub date -
Jan 18, 2008
filing date -
Nov 6, 2003
priority date (Note) -
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Abstract
A method for fabricating a coating for an implantable medical device is provided comprising applying a first polymer on at least a portion of the device to form a first layer of the coating and applying a second polymer on at least a portion of the first layer to form a second layer of the coating. The second polymer has a higher degree of hydration than the first polymer. The first or second polymer can comprise a polyorthoester.
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