| 摘要 |
An elongate carrier member configured for implantation into a 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 at the distal end of the carrier member; wherein the carrier member has a length such that the carrier member cannot be implanted in the cochlea beyond a maximum insertion depth at which residual hearing of the apical region of the cochlea is substantially preserved and at which said carrier member provides electrical-only stimulation to a depth in the cochlea of approximately 270° to 320°. In one embodiment, the carrier member has a length such that the carrier member has a maximum insertion depth into the cochlea of between approximately 14 mm and 18 mm.
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