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Non-invasive chemical species delivery apparatus and method

  • US 4,250,878 A
  • Filed: 11/22/1978
  • Issued: 02/17/1981
  • Est. Priority Date: 11/22/1978
  • Status: Expired due to Term
First Claim
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1. A bioelectrode for use in the iontophoretic delivery of a chemical species into the skin or tissue of a person comprisinga pouch for holding a fluid containing the chemical species, said pouch including flexible and deformable walls adapted to generally conform to surface shapes against which they are placed, at least a portion of which includes a microporous membrane separating the interior of the pouch from the exterior and having openings of about 0.22 microns or less in diameter, said portion being formed to present a generally planar to convex exterior surface, andan electrode carried by said pouch for coupling to an electric potential source.

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