As a bridge from the sound signal in the air to the sound perception of the inner ear auditory receptor, the tympanic membrane and ossicular chain of the middle ear transform the sound signal in the outer ear through two gas-solid and solid-liquid conversions. In addition, through the lever principle formed by three auditory ossicle structure, the sound was concentrated and amplified to the inner ear. However, the sound transmission function of the middle ear will be decreased by disease, genetic, or trauma. Hence, using middle ear prosthesis to replace the damaged ossicles can restore the conduction function. The function realization of middle ear prosthesis depends on the vibration response of the prosthesis from the tympanic membrane to the stapes plate on the human auditory perception frequency, which is affected by the way the prosthesis combined with the tympanic membrane, the material, and the geometric shape. In this study, reasonable prosthetic structures had been designed for different types of ossicular chain injuries, and the frequency response characteristics were analyzed by the finite element method then. Moreover, in order to achieve better vibration frequency response, a ball structure was designed in the prosthesis to simulate its amplification function. The results showed that the middle ear prostheses constructed by different injury types can effectively transfer vibration energy. In particular, the first- and second-order resonant frequencies and response amplitudes are close to each other when ball structure models of different materials are added. Instead, the resonance frequency of the third stage formed by aluminum alloy ball materials is larger than that of the other two, which showed good response features.

中文翻译：

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基于人中耳传导效应的假体结构设计与振动特性研究。

作为从空气中的声音信号到内耳听觉感受器的桥梁，中耳的鼓膜和听小骨链通过两次气固和固液转换将外耳中的声音信号转换。另外，通过由三个听小骨结构形成的杠杆原理，声音被集中并放大到内耳。但是，中耳的声音传播功能会因疾病，遗传或外伤而降低。因此，使用中耳假体代替受损的小骨可以恢复传导功能。中耳假体的功能实现取决于假体从鼓膜到the骨板在人类听觉感知频率上的振动响应，这受假体与鼓膜，材料和几何形状结合的方式的影响。在这项研究中，针对不同类型的听骨链损伤设计了合理的修复结构，然后通过有限元方法分析了频率响应特性。此外，为了获得更好的振动频率响应，在假体中设计了球形结构以模拟其放大功能。结果表明，不同损伤类型的中耳假体可以有效地传递振动能量。特别地，当添加不同材料的球结构模型时，一阶和二阶共振频率和响应幅度彼此接近。代替，