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Self-contained heating unit and drug-supply unit employing same

  • US 9,370,629 B2
  • Filed: 03/31/2015
  • Issued: 06/21/2016
  • Est. Priority Date: 05/21/2003
  • Status: Active Grant
First Claim
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1. A drug supply unit comprising:

  • a heating unit comprising;

    an enclosure comprising a substrate having an exterior surface and an interior surface; and

    a solid fuel comprising a metal, which metal is a reducing agent, and a metal-containing oxidizing agent, wherein the solid fuel is disposed on the interior surface of the substrate as a layer, wherein the thickness of the layer is in the range 0.001 inches to 0.030 inches anda drug disposed on a portion of the exterior surface of the substrate;

    wherein said drug comprises a film and the film has a thickness of less than 20 μ

    m.

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