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Intravasoular stent and method

  • US 5,776,184 A
  • Filed: 10/09/1996
  • Issued: 07/07/1998
  • Est. Priority Date: 04/26/1993
  • Status: Expired due to Term
First Claim
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1. A device for delivery of a drug into a body lumen comprising:

  • (a) a catheter;

    (b) a generally cylindrical, radially expandable stent body on the catheter; and

    (c) a porous coating on the stent body comprising a polymer and a therapeutic substance in a solid/solid solution with the polymer such that the polymer has a first concentration of therapeutic substance on a portion of the coating nearest to the stent body and a second, lesser concentration of therapeutic substance on a portion of the coating away from the stent body.

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