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Cartridge portion of transdermal drug delivery apparatus and methods

  • US 10,111,807 B2
  • Filed: 04/29/2015
  • Issued: 10/30/2018
  • Est. Priority Date: 04/30/2014
  • Status: Active Grant
First Claim
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1. A cartridge for supplying fluid in a transdermal drug delivery apparatus, the cartridge comprising:

  • a body at least partially definingan interior for containing the fluid,a first cavity including a cylindrical section and a frustoconical section, the cylindrical section tapering to the frustoconical section,a second cavity,a passageway connected between the cylindrical section of the first cavity and the second cavity, andfirst and second openings to the interior of the body,wherein the first and second openings are respectively defined by opposite first and second ends of the body, wherein the first opening is contiguous with the first cavity, and the second opening is contiguous with the second cavity;

    a self-sealing member at least partially closing the first opening; and

    a movable member at least partially closing the second opening, wherein at least a portion of the movable member is configured for being urged into the interior of the body for increasing pressure within the interior of the body.

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