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Intravascular stent with increasing coating retaining capacity

  • US 6,783,543 B2
  • Filed: 06/04/2001
  • Issued: 08/31/2004
  • Est. Priority Date: 06/05/2000
  • Status: Expired due to Term
First Claim
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1. An expandable stent, comprising:

  • a tubular structure including an outer surface positionable adjacent to a vessel wall, an inner surface facing a lumen of a body passageway, a plurality of expansion struts that are substantially parallel to each other, connector struts, and cells, the tubular structure having a first diameter that permits intraluminal delivery of the tubular structure into the body passageway, and a second expanded and deformed diameter upon the application from the interior of the tubular member of a radially, outwardly extending force; and

    a plurality of cavities formed in the outer surface of the stent wherein the plurality of cavities are micro-holes or micro-slits that extend from the outer surface through the inner surface, and wherein the micro-holes or micro-slits are configured to provide a plurality of reservoirs for a substance; and

    a substance contained in said reservoirs.

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