Patent ID: 6355064
Filing Date: 2002-03-12
Classification: A61N

Abstract:
An auditory prosthesis comprisinga signal generator, and a cochlear implantable electrode set provided on a carrier, for applying electrical currents for stimulating auditory nerves in the modiolus; wherein the electrode set comprises a first series of electrode poles arranged beside each other and spaced from each other along a first longitudinal side of the carrier, said carrier being arranged and constructed with said first longitudinal side facing the modiolus so that said first series of electrode poles adjacent to the modiolus when implanted; and a single second electrode pole arranged along a second longitudinal side of the carrier and connected to the signal generator, each of the electrode poles of said first set being individually connected to the signal generator; wherein said second electrode pole extends over substantially the same distance as the distance over which the first electrode poles extend; and wherein said signal generator generates signals which produce, between electrode poles to be selected, electrical field lines with radial and/or longitudinal components.