Effect of electromagnetic middle-ear implant simulating sites on the stapes spatial motion: A finite element analysis

IF 2.2 4区医学 Q3 ENGINEERING, BIOMEDICAL International Journal for Numerical Methods in Biomedical Engineering Pub Date : 2024-09-19 DOI:10.1002/cnm.3871

Yixiang Zhang, Houguang Liu, Lei Zhou, Jianhua Yang, Wen Liu, Shanguo Yang, Xinsheng Huang

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Abstract

The electromagnetic middle-ear implant (MEI) is a new type of hearing device for addressing sensorineural and mixed hearing loss. The hearing compensation effect of the MEI varies depending on the transducer stimulation sites. This paper investigates the impact of transducer stimulation sites on MEI performance by analyzing stapes spatial motion. Firstly, we constructed a human-ear finite element model based on micro-CT scanning and inverse molding techniques. This model was validated by comparing its predictions of stapes spatial motion and cochlear response with experimental data. Then, stimulation force was applied at four common sites: umbo, incus body, incus long process and stapes to simulate the electromagnetic transducer. Results show that at low and middle frequencies, stapes-stimulating and incus-long-process-stimulating produce similar spatial motion to normal hearing; at high frequencies, incus-body-stimulating produces similar results to normal hearing. The equivalent sound pressure level generated by the stapes piston motion is less sensitive to the stimulation direction than that deduced by the stapes rocking motion.

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电磁中耳植入物模拟点对镫骨空间运动的影响：有限元分析

电磁中耳植入体（MEI）是一种新型听力设备，用于解决感音神经性和混合性听力损失问题。电磁中耳植入体的听力补偿效果因换能器刺激部位而异。本文通过分析镫骨空间运动来研究换能器刺激部位对 MEI 性能的影响。首先，我们基于微型计算机断层扫描和反向成型技术构建了人耳有限元模型。通过将模型对耳廓空间运动和耳蜗反应的预测与实验数据进行比较，对该模型进行了验证。然后，在四个常见部位施加刺激力：umbo、门体、门长突和镫骨，以模拟电磁换能器。结果表明，在低频和中频，刺激镫骨和刺激门骨长程产生的空间运动与正常听力相似；在高频，刺激门骨体产生的结果与正常听力相似。镫骨活塞运动产生的等效声压级对刺激方向的敏感度低于镫骨摇摆运动。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal for Numerical Methods in Biomedical Engineering ENGINEERING, BIOMEDICAL-MATHEMATICAL & COMPUTATIONAL BIOLOGY

CiteScore

4.50

自引率

9.50%

发文量

103

审稿时长

3 months

期刊介绍： All differential equation based models for biomedical applications and their novel solutions (using either established numerical methods such as finite difference, finite element and finite volume methods or new numerical methods) are within the scope of this journal. Manuscripts with experimental and analytical themes are also welcome if a component of the paper deals with numerical methods. Special cases that may not involve differential equations such as image processing, meshing and artificial intelligence are within the scope. Any research that is broadly linked to the wellbeing of the human body, either directly or indirectly, is also within the scope of this journal.