基于集总参数模型的人工耳蜗圆窗植入位置对残余听力影响分析  

Investigating the Effect of Cochlear Implant Round Window Insertion Position on Residual Hearing using A Lumped Parameter Model

作　　者：倪广健 庞嘉 高搏 蒋刈[3,4] 戴朴[3] 明东[1,2] NI Guangjian;PANG Jia;GAO Bo;JIANG Yi;DAI Pu;MING Dong(Department of Biomedical Engineering,College of Precision Instruments and Optoelectronics Engineering,Tianjin University,Tianjin,P.R.China;Academy of Medical Engineering and Translational Medicine,Tianjin University,Tianjin,P.R.China;Department of Otolaryngology,Head and Neck Surgery,PLA General Hospital,Beijing,P.R.China;Department of Otolaryngology,Fujian Medical University Provincial College of Clinical Medicine,Fujian Provincial Hospital,Fuzhou,P.R.China)

机构地区：[1]天津大学精密仪器与光电子学院生物医学工程系,天津300072 [2]天津大学医学工程与转化医学研究院,天津300072 [3]解放军总医院耳鼻咽喉头颈外科,北京100853 [4]福建医科大学省立临床医学院、福建省立医院耳鼻咽喉科,福州350001

出　　处：《中华耳科学杂志》2020年第3期564-569,共6页Chinese Journal of Otology

基　　金：京津冀基础研究合作专项(18JCZDJC45300);国家自然科学基金(81971698);天津市留学人员科技活动启动项目择优资助计划(2018004)。

摘　　要：人工耳蜗植入是目前治疗重度到极重度感音性耳聋的有效方法。低频残余听力能够让患者具有较好的言语识别及音乐鉴赏能力,因此在人工耳蜗植入术中保护患者残余听力具有重要意义。本文主要探讨人工耳蜗通过圆窗植入时的不同位置对残余听力可能带来的影响。研究首先基于医学影像利用有限元方法对耳蜗圆窗膜进行建模,将其简化为椭圆形平板结构;随后计算分析了10种人工耳蜗电极在圆窗上的植入位置对圆窗膜刚度变化的影响;进而通过集总参数模型预测了不同圆窗植入位置对残余听力的影响。研究发现,相对圆窗中心沿长轴方向偏移较远的植入方案可以帮助有效保护残余听力。The cochlear implant(CI)is an effective rehabilitation method for severe and profound sensorineural hearing loss.It is important to preserve low-frequency residual hearing during the CI surgery,since this would provide patients with better speech recognition and music appreciation abilities.The aim of this paper is to investigate effects of different insertion positions via the round window(RW)on residual hearing.The finite element method was used to model the round window based on medical images,in which the RW membrane was simplified as an elliptical plane structure.Ten assumptive insertion positions were used for analyzing RW membrane stiffness changes at different frequencies after implantation.A lumped parameter model was then used to predict residual hearing with different insertion positions.The conclusion is that the farther the inserting position away from the RW center along its long axis,the better residual hearing will be preserved.

关 键 词：人工耳蜗 圆窗植入 残余听力 有限元分析 集总参数模型 

分 类 号：R764[医药卫生—耳鼻咽喉科]