乌姆博麦克风:中耳麦克风的特征和测试
Emma F Wawrzynek1, John Z Zhang2, Ioannis Kymissis3
1Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, 02139, MA, USA.
概括
UmboMic是一款新的压电式麦克风,显示出对完全植入的耳植入物有希望. 它的设计显示出高灵敏度和可重复性,为未来的生物相容性研究铺平了道路.
科学领域:
- 生物医学工程 生物医学工程
- 材料科学 材料科学 材料科学
- 听力学 听力学是指听力学.
背景情况:
- 完全可植入的耳植入物代表了听力恢复技术的未来.
- 内部麦克风植入旨在提高设备性能和用户体验.
研究的目的:
- 报告"UmboMic"的发展情况,这是一款专为完全植入耳植入物而设计的压电式麦克风.
- 评估UmboMic用于内部审计应用程序的可行性和性能.
主要方法:
- UmboMic利用压电效应与聚乙烯二化物 (PVDF) 层来检测中耳的波运动.
- 为了提高生物相容性,进行了材料修改,包括对导电和接层的更改.
- 七个UmboMic传感器进行了基板测试,随后植入了五个人体尸体耳朵.
主要成果:
- UmboMic在频率上表现出高灵敏度,低噪音底层,电磁干扰屏蔽和良好的线性.
- 性能相当于外部助听器麦克风,相当于输入噪声为32.4 dB SPL (100 Hz7 kHz).
- 制造重复性显示传感器灵敏度的差异不到6dB,定位研究表明适应植入变化的弹性.
结论:
- UmboMic的设计是实现功能性麦克风的重大进展,用于完全植入的耳植入物.
- 有前途的基板和尸体性能要求进一步研究完整的设备生物相容性,固定和长期植入研究.
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