A system for delivering a substance into a body at a treatment site that includes an alternating current source and a plurality of electrodes. Circuitry is connected between the alternating current source and the electrodes for supplying current to the electrodes when the electrodes are in electrical...http://www.google.com.au/patents/US20030199808?utm_source=gb-gplus-sharePatent US20030199808 - Systems and methods for electrokinetic delivery of a substance
