Implantable medical device having protruding surface structures for drug delivery and cover attachment
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Jul 3, 2001
Grant Date -
N/A
app pub date -
Sep 28, 2000
filing date -
Sep 28, 2000
priority date (Note) -
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Abstract
A method for forming an implantable medical device, such as a stent, covered stent, or synthetic stent graft, is provided. Protruding structures are formed on a surface of the device. The protruding structures have a central depression region surrounded by a lip. The protruding structures can have a variety of shapes, including circular and ovular shapes, or the protruding structure can form a groove. The protruding structures can be used to engage a cover. Glue can be added to the protruding structures to help secure the cover. The protruding structures can also contain a therapeutic substance or substances for release in situ. The protruding structures can be formed using a laser discharge to create a hole in the stent surface followed by directing a pressurized stream of grit at the surface.
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