| 摘要 |
An electrode system adapted for insertion into a human cochlea as part of a cochlear stimulation system includes (1) an electrode array, made in a straight or curved shape, but made on a flexible carrier so that it can easily bend within a curved body cavity, such as the cochlea; and (2) a flexible positioner, molded in a curved or straight shape from a silicone polymer so as to make it easy to slide into the body cavity. A distal tip of the positioner is attached to the electrode array at a location that is proximal from the distal end of the electrode array about 3-5 mm. An insertion tube facilitates insertion of the electrode system into a human cochlea in one operation with the aid of a movable stylet wire. One embodiment of the positioner includes keeper tabs at its distal end, and side walls at its proximal end, to help maintain the positioner in a desired position along the back side of the electrode array during and after the insertion process.
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