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Process for coating stents

  • US 6,153,252 A
  • Filed: 04/19/1999
  • Issued: 11/28/2000
  • Est. Priority Date: 06/30/1998
  • Status: Expired due to Term
First Claim
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1. A method for coating a stent having an outer surface and inner surface with passages between the outer surface and inner surfaces comprising:

  • (a) contacting the stent with a liquid coating solution containing a film forming biocompatible polymer under conditions suitable to allow the film forming biocompatible polymer to coat at least one surface of the stent;

    (b) before the coating solution dries creating fluid movement out of the passages of the stent sufficient to prevent the film forming biocompatible polymers from substantially blocking said passages thereafter;

    (c) drying the stent to provide at least a partially coated stent with a first coatingwherein said fluid movement is created by contacting a mandrel with the inner surface of the stent and moving the mandrel relative to the stent to prevent bridges from forming in said passages.

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