Patent ID: 8433401
Filing Date: 2013-04-30
Classification: A61N

Abstract:
1. An electrode assembly for reducing edge effects during the transdermal ionotphoretic delivery of an active agent, the assembly comprising: a pair of electrodes for delivering current to the skin, the pair of electrodes comprising an inner and outer electrode having a concentric arrangement, the concentric arrangement including a gap between the inner electrode and outer electrode such that the outer electrode is electrically isolated from the inner electrode, the pair of electrodes configured to be coupled to an electrical current source; and a medium for carrying an active agent, the medium being positionable to be adjacent to a skin layer of a user so that application of current to the electrode assembly causes the active agent from the medium to be transported through the skin layer; and wherein when the medium is positioned between the inner electrode and the outer electrode, the concentric arrangement of the pair of electrodes is configured to allow a current to flow through the medium from the inner electrode to the outer electrode to reduce current being driven along an edge of the inner electrode.