Numerical analysis of the influence of otitis media on the hearing compensation performance of round-window stimulation.
10.7507/1001-5515.201809056
- Author:
Lin XUE
1
;
Houguang LIU
2
;
Zhihua WANG
1
;
Jianhua YANG
1
;
Shanguo YANG
1
;
Xinsheng HUANG
3
;
Hu ZHANG
1
Author Information
1. School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, P.R.China.
2. School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, P.R.China.liuhg@cumt.edu.cn.
3. Department of Otorhinolaryngology, Zhongshan Hospital Affiliated to Fudan University, Shanghai 200032, P.R.China.
- Publication Type:Journal Article
- Keywords:
finite element analysis;
ossicular erosion;
otitis media;
round-window stimulation;
tympanic membrane lesion
- MeSH:
Acoustic Stimulation;
Ear Ossicles;
pathology;
Finite Element Analysis;
Hearing;
Humans;
Otitis Media;
physiopathology;
Reproducibility of Results;
Round Window, Ear;
physiology;
Tomography, X-Ray Computed;
Tympanic Membrane Perforation
- From:
Journal of Biomedical Engineering
2019;36(5):745-754
- CountryChina
- Language:Chinese
-
Abstract:
In order to study the influence of tympanic membrane lesion and ossicular erosion caused by otitis media on the hearing compensation performance of round-window stimulation, a human ear finite element model including cochlear asymmetric structure was established by computed tomography (CT) technique and reverse engineering technique. The reliability of the model was verified by comparing with the published experimental data. Based on this model, the tympanic membrane lesion and ossicular erosion caused by otitis media were simulated by changing the corresponding tissue structure. Besides, these simulated diseases' effects on the round-window stimulation were studied by comparing the corresponding basilar-membrane's displacement at the frequency-dependent characteristic position. The results show that the thickening and the hardening of the tympanic membrane mainly deteriorated the hearing compensation performance of round-window stimulation in the low frequency; tympanic membrane perforation and the minor erosion of ossicle with ossicular chain connected slightly effected the hearing compensation performance of round-window stimulation. Whereas, different from the influence of the aforementioned lesions, the ossicular erosion involving the ossicular chain detachment increased its influence on performance of round-window stimulation at the low frequency. Therefore, the effect of otitis media on the hearing compensation performance of round-window stimulation should be considered comprehensively when designing its actuator, especially the low-frequency deterioration caused by the thickening and the hardening of the tympanic membrane; the actuator's low-frequency output should be enhanced accordingly to ensure its postoperative hearing compensation performance.
