Cochlear implant electrode and method of making same
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United States of America Patent
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Jan 1, 2008
Grant Date -
Jul 1, 2004
app pub date -
Sep 19, 2003
filing date -
Sep 19, 2002
priority date (Note) -
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Abstract
A cochlear stimulation lead having a pre-curved electrode array is provided. The molding process provides memory to the curved part of the lead. The lead may be made having a stylet insertion channel that extends from a slightly curved or substantially straight section and into the highly curved section of the lead. Because high compliance is desired for the lead in cochlear stimulation applications, the compliance is controlled not only by the taper at the distal end of the lead and overall lead thickness, but also by choosing the material hardness of the lead carrier/covering and employing compliant zigzagged conductor wire. In addition, differential lead compliance/stiffness can be achieved by using a stiff tubing that forms part of the stylet insertion channel.
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