Patent ID: 7349733

Claim:
An implantable electrotransport comprising: a first electrode comprising an electropositive material in operable communication with an ionic fluid; a second electrode comprising an electronegative material in operable communication with said ionic fluid; a bio-compatibile semipermeable membrane disposed adjacently under at least a portion of either said first electrode or said second electrode, said semipermeable membrane configured to be in fluid communication with said ionic fluid in an environment in which said electrotransport device is placed; a compartment adapted for containing a beneficial agent therein, the compartment in operable communication with said first or second electrode, said semipermeable membrane configured to be in fluid communication with any beneficial agent contained in said compartment; and a conductor, insulated from said ionic fluid, said conductor extending from said first electrode to said second electrode and providing an electrical interconnection therebetween; wherein said electropositive material, said electronegative conductor and said ionic fluid complete a circuit capable of creating a current beneath a stratum corneum skin layer sufficient to transport said beneficial agent through said membrane without an additional power source.