M6-2 MEMS人工内耳基底膜のin vivo刺激特性評価(M6 バイオセンサ・システム)

概要

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In this paper, we develop an implantable acoustic sensor for an artificial cochlea based on microfabrication technologies. The sensor consists of a piezoelectric and flexible membrane to detect the acoustic wave. The sensor converts the deformation by the acoustic wave to the electric signal due to the piezoelectric effect. The geometrical configuration is designed for the animal test using a guinea pig. The fabricated sensor is implanted into a cochlea of guinea pig to investigate the basic device characteristics in vivo. The vibration amplitude of the membrane placed near the basal turn of the cochlea is measured by a laser Doppler vibrometer coupled with a microscope. The vibration of the membrane is successfully measured by applying a sinusoidal acoustic wave at 0.5 kHz-50 kHz and 105 dBSPL.
一般社団法人日本機械学会の論文
2009-10-15