US Patent 7962226 Cochlear endosteal electrode carrier member

An elongate electrode carrier member including a longitudinally-extending central region, two side regions laterally extending from opposing sides of the central region, a lateral surface defined by the central and side regions together forming a convex circumferential surface, a medial surface defined by a convex surface of the central region and a concave surface for each of the side regions, a plurality of longitudinally-spaced electrodes disposed on or in the convex surface of the central region of the medial surface, and a support structure including a plurality of longitudinally extending wires each connected to one or more of the electrodes, wherein a subset of the plurality of wires is disposed in the central region and at least one of the plurality of wires is disposed in one of the side regions.