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Bladder Arrangement For Microneedle-Based Drug Delivery Device

  • US 20110172601A1
  • Filed: 01/08/2010
  • Published: 07/14/2011
  • Est. Priority Date: 01/08/2010
  • Status: Active Grant
First Claim
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1. A bladder arrangement for an active transdermal drug delivery device, comprising:

  • a first flexible membrane having an inner and outer surface;

    a bladder member including an inner surface and an outer surface, the inner surface of the flexible membrane and the inner surface of the bladder member defining a chamber for receiving a drug therein;

    an array of microneedles, each microneedle having an input;

    a valve arrangement communicating with the inputs of the microneedles through a passageway and being operatively connected to the rigid bladder member, the valve arrangement movable between a first configuration wherein the inputs of the microneedles are is isolated from the drug in the chamber and a second configuration wherein the passageway communicates with the drug in the chamber;

    wherein the bladder member has greater rigidity than the flexible membrane.

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