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Rate adjustable drug delivery system

  • US 6,421,561 B1
  • Filed: 07/11/2000
  • Issued: 07/16/2002
  • Est. Priority Date: 12/30/1999
  • Status: Expired due to Term
First Claim
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1. A transdermal iontophoretic therapeutic agent delivery system comprising;

  • (a) a plurality of self-contained, serially connected galvanic power sources, wherein said plurality of galvanic power sources alone provide the power for the device and the control for the rate and dosage of therapeutic agent delivered;

    (b) wherein said plurality of galvanic power sources are unequal in columbic capacity such that at least one of said galvanic power sources is depleted earlier than the others; and

    (c) a resistance device connected in parallel with one or more of said plurality of galvanic power sources.

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