Patent ID: 7844327
Filing Date: 2010-11-30
Classification: A61N

Abstract:
1. A relatively planar, layered electrode assembly suitable for use in an electrical circuit associated with an iontophoresis device for the transcutaneous administration of an active therapeutic species comprising: (a) a base layer comprising at least in part a linking conductive base material which is electrochemically oxidized or reduced preferentially to water oxidation or reduction; (b) a first upper layer of sacrificial electrode material coated on a first portion of said base layer wherein said sacrificial electrode material is electrochemically oxidized or reduced preferentially to water oxidation or reduction and preferentially to said linking conductive base material of said base layer; (c) a second upper layer of non-conducting material coated on a second portion of said base layer, said second upper layer being spaced from said first upper layer, a narrow linking area of said linking conductive base material remaining exposed therebetween, wherein said linking area of said base layer extends across said base layer; and (d) wherein, as said electrode assembly is used in a circuit of an associated device, during the operation thereof, consumption of said materials is ordered with said first upper layer of sacrificial electrode material being consumed first and said exposed linking area including said linking conductive base material of said base layer being consumed second, consumption of said linking conductive base material interrupting electrical circuit continuity in said electrode assembly and disabling activity in said associated device.