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Stent Coating For Eluting Medication

  • US 20100198335A1
  • Filed: 04/07/2010
  • Published: 08/05/2010
  • Est. Priority Date: 01/28/2005
  • Status: Active Grant
First Claim
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1. A method for providing a stent suitable for insertion and expansion into a vasculature to support an adjacent vasculature region, comprising the steps of:

  • a) providing a plurality of wires forming an elongated and selectively expandable and constrictable hollow tube, each wire providing a substrate having a cross-section comprising an outside-facing surface portion and an inside-facing surface portion;

    b) adhering an intermediate coating to the outside-facing surface portion of each substrate wire, the intermediate coating comprising a plurality of columnar structures having a sidewall extending between a proximal end adhered to the substrate wire and a distal end spaced therefrom, wherein the sidewalls of immediately adjacent columns do not contact each other to thereby provide porosity there between;

    c) capping the distal end of each of the plurality of columnar structures with a carbon-containing material; and

    d) filling an elutable material into the porosity provided between each of the plurality of columnar structures.

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