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Evaluation of the Cochlear Electrode Behavior in the 3D Human Cochlea Model by FEM Analysis  

임윤섭 (서울대학교 전기컴퓨터 공학부)
박세익 (서울대학교 전기컴퓨터 공학)
김용협 (서울대학교 기계항공공학)
오승하 (서울대학교 의과대학 이비인후)
김성준 (서울대학교 전기컴퓨터 공학부)
Publication Information
Journal of Biomedical Engineering Research / v.25, no.3, 2004 , pp. 207-215 More about this Journal
Abstract
A finite element analysis is used in this study to model 6 kinds of electrode by a genetic program in order to evaluate the mechanical effect on the 3D human cochlea model and the behavior of electrode. Human cochlea is modeled by the spiral-approximation method and the shape of scala tympani is extracted from the mid section of the human cochlea. Contact pressure at the tip and the insertion force are found to be highest when the wires stack horizontally. Axial rotation of electrode is minimal comparing with the stimulating current spread. The results indicate that the electrode stiffness is important to minimize the trauma.
Keywords
Cochlear Implant; Cochlear Electrode; Finite Element Method;
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