Plaster structure for iontophoresis

Abstract From the Canadian patent

Plaster structures for iontophoresis are disclosed for the administration of drugs through skin and mucous membranes. The devices provide for the stable retention and storage of a predetermined amount of a physiologically active agents until the device is applied to a patient. The devices include an electrically conductive medicinal substance storing layer which contains physiologically active agents, and a non-permeable backing layer which covers the medicinal substance storing layer. An electrode passes through the backing layer where it makes contact with the medicinal substance storing layer. On the opposite side of the storing layer a non-permeable protective layer is provided which a …