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Books > Medicine > Nursing & ancillary services > Biomedical engineering
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A Polymer Cochlear Electrode Array: Atraumatic Deep Insertion, Tripolar Stimulation, and Long-Term Reliability (Hardcover, 1st ed. 2018)
Loot Price: R3,291
Discovery Miles 32 910
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A Polymer Cochlear Electrode Array: Atraumatic Deep Insertion, Tripolar Stimulation, and Long-Term Reliability (Hardcover, 1st ed. 2018)
Series: Springer Theses
Expected to ship within 10 - 15 working days
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This book describes the design, fabrication and evaluation of a
polymer-based neural interface for a cochlear electrode array,
reviewed in terms of fabrication process, functionality, and
reliability. Polymer-based devices have attracted attention in the
neural prosthetic field due to their flexibility and compatibility
with micro-fabrication process. A liquid crystal polymer (LCP) is
an inert, highly water-resistant polymer suitable for the
encapsulation of electronic components and as a substrate material
for fabricating neural interfaces. The author has designed,
fabricated, and evaluated an LCP-based cochlear electrode array for
an improved polymer-based cochlear implant. The thesis deals with 3
key topics: atraumatic deep insertion, tripolar stimulation, and
long-term reliability. Atraumatic insertion of the intracochlear
electrode and resulting preservation of residual hearing have
become essential in state-of-the-art cochlear implantation. A novel
tapered design of an LCP-based cochlear electrode array is
presented to meet such goals. For high-density and
pitch-recognizable cochlear implant, channel interaction should be
avoided. Local tripolar stimulation using multi-layered electrode
sites are shown to achieve highly focused electrical stimulation.
This thesis addresses another vital issue in the polymer-based
neural implants: the long-term reliability issue. After suggesting
a new method of forming mechanical interlocking to improve
polymer-metal adhesion, the author performs accelerating aging
tests to verify the method's efficacy. The aforementioned three
topics have been thoroughly examined through various in vitro and
in vivo studies. Verification foresees the development of LCP-based
cochlear electrode array for an atraumatic deep insertion, advanced
stimulation, and long-term clinical implant.
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