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Transdermal drug delivery devices having coated microprotrusions

  • US 20040062813A1
  • Filed: 06/27/2003
  • Published: 04/01/2004
  • Est. Priority Date: 06/28/2002
  • Status: Abandoned Application
First Claim
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1. A method of coating the surface of one or more microprojections of a microprojection array comprising the steps of:

  • providing a microprojection array comprised of one or more microprojections;

    treating the surface of one or more of said microprojections of said microprojection array with a method selected from group consisting of chemical pre-etching, plasma treatment, heat treating, rinsing with an alkaline detergent and rinsing with a wetting agent;

    providing a coating formulation comprising an active agent;

    applying said coating formulation to said treated surfaces of said one or more microprojections; and

    drying said coating formulation onto said surfaces to form a coating.

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