Methods of polymeric stent surface smoothing and resurfacing to reduce biologically active sites
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United States of America Patent
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Jul 14, 2015
Grant Date -
Apr 16, 2009
app pub date -
Apr 11, 2007
filing date -
Apr 12, 2006
priority date (Note) -
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Abstract
The present invention provides methods for fabricating a stent using a chemical treatment to smooth, polish or strengthen the stent. One such treatment involves exposing the stent to acetone or a similar solvent. In certain embodiments, the additional step comprises placing the stent in a bath containing acetone, or a similar solvent, where the bath also contains the polymer the stent is composed of. The acetone bath step may be conducted at a temperature that is below the glass transition temperature. The present invention also provides for methods of fabricating a stent using an acetone bath that comprises poly (lactic) acid. Other embodiments provide for methods of fabricating a stent using an acetone bath that comprises poly (lactic) acid and polyethylene glycol.
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