MNM-1A-7 埋め込み型骨導補聴器の加振力評価 : 頭蓋骨に発生するナノメートルスケール振動の計測(セッション 1A マイクロ・ナノスケールバイオ計測と医用応用)

概要

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Bone-conduction hearing aids have better sound quality and higher sound pressure than air-conduction hearing aids. In this study, a new subcutaneously implanted bone-conduction hearing aid is proposed and evaluated. A vibrator of the hearing aid is composed of giant magnetostrictive material (GMM). The vibrator is implanted into the temporal bone of patients with hearing loss, and generates the bone conduction sound. In this study the vibrator was implanted into the temporal bone of cadavers and its fundamental properties were examined. Nano order vibration generated on the skull was measured by a PVDF film, and laser Doppler vibrometer. In addition, the ear canal sound pressure generated by the vibrator was also measured by a microphone.
2010-10-12