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Iontophoretic delivery device

  • US 5,405,317 A
  • Filed: 10/30/1992
  • Issued: 04/11/1995
  • Est. Priority Date: 05/03/1991
  • Status: Expired due to Term
First Claim
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1. An electrically powered iontophoretic delivery device including a donor electrode assembly, a counter electrode assembly and a source of electrical power adapted to be electrically connected to the donor electrode assembly and the counter electrode assembly, at least one of the electrode assemblies including an agent reservoir containing an agent, the agent reservoir adapted to be placed in agent transmitting relation with a body surface;

  • and an electrode adapted to be electrically connected to the source of electrical power and to the agent reservoir;

    wherein the electrode comprises;

    a hydrophobic polymeric matrix;

    about 10 to 50 vol % of an agent which can absorb a liquid solvent thereby forming a plurality of ion-conducting pathways through the matrix; and

    about 5 to 40 vol % of a chemical species able to undergo oxidation or reduction during operation of the device.

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