US Patent 7643874 Dermal patch

The invention is generally directed to a kit and patch for transdermal or intradermal delivery of at least one substance into the skin. The kit includes a dermal patch having an electrochemical cell with two electrodes and a retainer for retaining a conductive fluid which further includes an active substance. The conductive fluid can be deposited on at least one of the two electrodes. Alternatively, the conductive fluid can be applied topically to the skin.