Patent ID: 7881811
Filing Date: 2011-02-01
Classification: A61N

Abstract:
1. An electrode assembly for use in a prosthetic hearing implant, comprising: an elongate carrier member for implantation into the cochlea, the carrier member having a proximal end adapted to be positioned in a basal region of the cochlea, and a distal end adapted to be positioned in an apical region of the cochlea; and a plurality of electrodes disposed along a longitudinal surface of said carrier member, wherein longitudinally adjacent of electrodes have a predetermined longitudinal spacing to attain a desired flexibility along said length of said carrier member, a first set of adjacent electrodes that are more closely spaced than a second set of adjacent electrodes, said first set of adjacent electrodes being located near said proximal end of said carrier member, and said second set of adjacent electrodes being located near said distal end of said carrier member.