用于完全植入式听力假肢的压电双带宽加速器的设计
Alison E Hake1, Panagiota Kitsopoulos2, Karl Grosh3
1Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA, and is now with the Mechanical Engineering and Materials Science Department at the University of Pittsburgh, Pittsburgh, PA, 15260, USA.
IEEE sensors journal
|May 20, 2024
概括
研究人员开发了一种新的双带宽微电子机械系统压电加速度计用于可植入的听力假肢. 这种微小的传感器满足了中耳植入器的严格性能要求,推进了助听器技术.
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
- 传感器技术 传感器技术
背景情况:
- 加速度计被探索为骨振动传感器,以缩小助听器和耳植入物.
- 现有的加速度计缺乏适用于中耳植入物的严格性能.
- 完全可植入的听力假肢需要先进的传感器技术.
研究的目的:
- 介绍一种用于植入式听力假肢的新型加速度计设计.
- 为了满足中耳植入器的严格性能要求.
- 为了实现新一代完全植入式助听器.
主要方法:
- 设计了一种双带宽微电子机械系统 (MEMS) 压电加速度计.
- 利用基于实验验证的分析模型的面积最小化过程.
- 集成了两个具有不同的频段宽度 (0.1-1.25 kHz和1.25-8 kHz) 的传感元件.
主要成果:
- 在0.1-8kHz的带宽中,实现了低于20声等声级的等价噪声底部.
- 开发了一种795微米×778微米的传感器包装尺寸,适合中耳植入.
- 估计包装系统总质量约为14毫克.
结论:
- 开发的MEMS加速仪符合中耳使用的关键物理和性能规格.
- 这种传感器技术解决了完全可植入的听力假体研究中的重大缺口.
- 允许开发先进的,小型化的听力假肢.
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