Park Woo-Tae, O'Connor Kevin N, Chen Kuan-Lin, Mallon Joseph R, Maetani Toshiki, Dalal Parmita, Candler Rob N, Ayanoor-Vitikkate Vipin, Roberson Joseph B, Puria Sunil, Kenny Thomas W
Department of Mechanical Engineering, Stanford University, Stanford, CA 94305, USA.
Biomed Microdevices. 2007 Dec;9(6):939-49. doi: 10.1007/s10544-007-9072-4.
Experiments were conducted to evaluate a silicon accelerometer as an implantable sound sensor for implantable hearing aids. The main motivation of this study is to find an alternative sound sensor that is implantable inside the body, yet does not suffer from the signal attenuation from the body. The merit of the accelerometer sensor as a sound sensor will be that it will utilize the natural mechanical conduction in the middle ear as a source of the vibration. With this kind of implantable sound sensor, a totally implantable hearing aid is feasible. A piezoresistive silicon accelerometer that is completely encapsulated with a thin silicon film and long flexible flex-circuit electrical cables were used for this study. The sensor is attached on the middle ear ossicles and measures the vibration transmitted from the tympanic membrane due to the sound in the ear canal. In this study, the sensor is fully characterized on a human cadaveric temporal bone preparation.
进行了实验以评估一种硅加速度计作为可植入式助听器的可植入式声音传感器。本研究的主要动机是找到一种可植入体内的替代声音传感器，且不会受到来自身体的信号衰减影响。加速度计传感器作为声音传感器的优点在于它将利用中耳中的自然机械传导作为振动源。有了这种可植入式声音传感器，完全可植入式助听器是可行的。本研究使用了一种完全由薄硅膜和长柔性挠性电路电缆封装的压阻式硅加速度计。该传感器附着在中耳小骨上，测量由于耳道内声音而从鼓膜传递的振动。在本研究中，该传感器在人体尸体颞骨标本上进行了全面表征。
