Method for spray-coating a medical device having tubular wall such as a stent
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United States of America Patent
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Nov 25, 2008
Grant Date -
Jul 7, 2005
app pub date -
Feb 14, 2005
filing date -
Mar 28, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
A method for electrostatic spray-coating a medical device having a tubular wall, such as a stent, having an inner surface, an outer surface and openings therein. The tubular wall is grounded or electrically charged, and an electrically charged conductive core wire is located axially through the center of the stent. An electrical potential is applied to the conductive core wire to impart an electrical charge to the conductive core wire. The tubular wall is exposed to an electrically charged coating formulation, and the electrically charged coating formulation is deposited onto a portion of the tubular wall to form a coating. The electrical potentials of the conductive core wire and tubular wall can be repeatedly alternated.
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