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

Autor: Zhang Y; School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou, China., Liu H; School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou, China., Zhou L; Department of Otorhinolaryngology-Head and Neck Surgery, Zhongshan Hospital affiliated to Fudan University, Shanghai, China., Yang J; School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou, China., Liu W; Department of Otolaryngology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China.; Artificial Auditory Laboratory of Jiangsu Province, Xuzhou Medical University, Xuzhou, China., Yang S; School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou, China., Huang X; Department of Otorhinolaryngology-Head and Neck Surgery, Zhongshan Hospital affiliated to Fudan University, Shanghai, China.
Jazyk: angličtina
Zdroj: International journal for numerical methods in biomedical engineering [Int J Numer Method Biomed Eng] 2024 Nov; Vol. 40 (11), pp. e3871. Date of Electronic Publication: 2024 Sep 19.
DOI: 10.1002/cnm.3871
Abstrakt: 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.
(© 2024 John Wiley & Sons Ltd.)
Databáze: MEDLINE
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