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Iontophoretic device with reversible polarity

  • US 4,406,658 A
  • Filed: 03/06/1981
  • Issued: 09/27/1983
  • Est. Priority Date: 03/06/1981
  • Status: Expired due to Term
First Claim
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1. An iontophoretic device comprising:

  • a source of electrical current;

    first electrode means for containing a charged ionic substance for delivery to said body;

    second electrode means for containing said charged ionic substance for delivery to said body;

    timing means coupled to said source of electrical current for timing a first period and a second period; and

    polarity switching means coupled to said timing means, said source of electrical current and said first and second electrode means for applying said electrical current across said first and second electrode means in a first direction to effect delivery of said ionic substance contained in one of said first and second electrode means during said first period and for applying said electrical current across said first and second electrode means in a second direction to effect delivery of said ionic substance contained in the other of said first and second electrode means during said second period.

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