DRUG-DELIVERY ENDOVASCULAR STENT AND METHOD OF USE
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United States of America Patent
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Issued Date -
Apr 24, 2008
app pub date -
May 21, 2007
filing date -
Oct 20, 2006
priority date (Note) -
Abandoned
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Abstract
An improvement in drug-eluting stents, and method of their making are disclosed. The surface of a metal stent is roughened to have a surface roughness of at least about 20 .mu.in (0.5 .mu.m) and a surface roughness range of between about 300-700 .mu.in (7.5-17.5 .mu.m). The roughened stent surface is covered with a polymer-free coating of a limus drug, to a coating thickness greater than the range of surface roughness of the roughened stent surface.
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