Institute of Biomedical Engineering Research, Kyungpook National University, 680, Gukchaebosang-ro, Jung-gu, Daegu 41944, Korea.
Sensors (Basel). 2018 May 24;18(6):1694. doi: 10.3390/s18061694.
The design and implementation of a novel piezoelectric-based actuator for an implantable middle-ear hearing aid is described in this paper. The proposed actuator has excellent low-frequency output characteristics, and can generate high output in a specific frequency band by adjusting the mechanical resonance. The actuator consists of a piezoelectric element, a miniature bellows, a cantilever membrane, a metal ring support, a ceramic tip, and titanium housing. The optimal structure of the cantilever-membrane design, which determines the frequency characteristics of the piezoelectric actuator, was derived through finite element analysis. Based on the results, the piezoelectric actuator was implemented, and its performance was verified through a cadaveric experiment. It was confirmed that the proposed actuator provides better performance than currently used actuators, in terms of frequency characteristics.
本文介绍了一种新型基于压电的植入式中耳助听设备驱动器的设计与实现。该驱动器具有优异的低频输出特性，并可以通过调整机械共振在特定频带内产生高输出。驱动器由压电元件、微型波纹管、悬臂膜、金属环支撑、陶瓷尖端和钛外壳组成。通过有限元分析，推导出了决定压电驱动器频率特性的最佳悬臂膜设计结构。基于该结果，实现了压电驱动器，并通过尸体实验验证了其性能。结果证实，与目前使用的驱动器相比，该驱动器在频率特性方面提供了更好的性能。
