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| Numerical analysis for sound transmission of middle ear with perforations |
| Received:November 08, 2008 Revised:October 15, 2009 |
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| DOI：10.7511/jslx20106025 |
| KeyWord:finite element modeling ear mechanics acoustic-structural coupled analysis tympanic membrane perforations |
| Author | Institution |
| 孙秀珍 |
大连医科大学 第二临床附属医院 耳鼻咽喉科,大连 ;大连理工大学 工业装备结构分析国家重点实验室,大连 |
| 李生 |
大连理工大学 工业装备结构分析国家重点实验室,大连 |
| 刘迎曦 |
大连理工大学 工业装备结构分析国家重点实验室,大连 ;大连医科大学 第二临床附属医院 耳鼻咽喉科,大连 |
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| Abstract: |
| Tympanic membrane perforations are common sequelae of middle ear disease. Sound transmission through middle ears with tympanic membrane perforations is not well understood. In this study, a three-dimensional finite element model of human ear with perforations is proposed that includes the ear canal, tympanic membrane, ossicular bones, middle ear suspensory ligaments/muscles, middle ear cavity, and inner ear fluid. The acoustic-structural coupling effect of the canal, tympanic membrane and the middle ear cavity is conducted and employed to predict the effects of perforation location and perforation size on sound transmission of the middle ear. The results show that the finite element model with perforations may be useful to predict the conductive hearing loss resulting from a tympanic membrane perforation. |
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