Histological evaluation of a cochlear implant electrode array with electrically activated shape change for perimodiolar positioning
نویسندگان
چکیده
منابع مشابه
Active positioning device for a perimodiolar cochlear electrode array
The authors report on an actuated positioning device for a cochlear prosthesis insertion procedure. The device consists of multiple high-aspect ratio fluidic actuator chambers integrated with a high-density silicon cochlear electrode array and manufactured in a taperedhelix form. Actuation chambers with cross-sectional sizes as small as 40 · 200 lm and lengths of 30 mm have been fabricated usin...
متن کاملShape Optimization of Cochlear Implant Electrode Array using Genetic Algorithms
−Finite element analysis is used to compute the current distribution of the human cochlea during cochlear implant electrical stimulation. Genetic algorithms are then applied in conjunction with the finite element analysis to optimize the shape of cochlear implant electrode array based on the energy deposited in the spiral ganglion cells region. The goal is to improve the focus of electrical ene...
متن کاملA multiple-electrode array for a cochlear implant.
A satisfactory multiple-electrode array for a cochlear implant has been developed. This can be passed around the turns of the cochlea if it is first introduced into the scala tympani through an opening in the apical turn.
متن کاملComparative study of cochlear damage with three perimodiolar electrode designs.
OBJECTIVE To describe intracochlear insertion trauma caused by three perimodiolar cochlear implant electrodes. STUDY DESIGN Descriptive histological study of 15 human cadaver temporal bones. METHODS Fifteen cadaver temporal bones underwent surface preparation and were implanted with one of the following perimodiolar electrode arrays: Combi 40+PM (MedEl Corporation), HiFocus II (Advanced Bio...
متن کاملA cochlear implant electrode.
This study has shown that an electrode array can be passed along the hold length of the cochlea if it is inserted through and opening in the scala tympani of the apical turn. The electrode must have the appropriate mechanical properties and some of these were stiffness and extensibility. The electrode and operative approach should be helpful in stimulating the terminal auditory nerve fibres on ...
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ژورنال
عنوان ژورنال: Current Directions in Biomedical Engineering
سال: 2018
ISSN: 2364-5504
DOI: 10.1515/cdbme-2018-0036