Multi-electrode cochlear implant and method of manufacturing the same
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United States of America Patent
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May 20, 1997
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N/A
app pub date -
Aug 18, 1995
filing date -
Oct 22, 1991
priority date (Note) -
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Abstract
A multi-electrode cochlear implant is taught in which approximately twenty or more insulated metal wires are wound around a flexible tube. These wires are held in place with a further layer of dielectric insulating material. The insulation is selectively removed with a laser beam to form electrodes. Two or more layers or valences of wires can be used, with the inner layer of wires terminating distal to the outer layers to provide a stepwise approximation of the tapering of the scala tympani. A core of shape memory material may be introduced into the tube, so that the implant will retain an effective shape after implantation.
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