基于有限元方法对钛板改制全听骨赝复物听骨传音特性的理论分析  

Dynamical behavior of the total ossicular replacement prosthesis made from titanium plate using the finite element analysis

作　　者：徐静进[1] 陈力奋[1] 杨琳[1] 戴培东[1] 张天宇[2] 王正敏[2] 

机构地区：[1]复旦大学附属眼耳鼻喉科医院实验中心,上海200031 [2]复旦大学附属眼耳鼻喉科医院实验中心耳鼻喉科,上海200031

出　　处：《中国眼耳鼻喉科杂志》2014年第1期9-14,共6页Chinese Journal of Ophthalmology and Otorhinolaryngology

基　　金：上海市市级医院新兴前沿技术联合攻关项目(SHDC12010119)

摘　　要：目的设计用钛板改制的低成本人工听骨,并对其进行传音特性的有限元分析。方法首先裁剪一条钛板并折叠得到全听骨赝复物(TORP)人工听骨的初步几何形状;在中耳三维有限元模型中置入人工听骨模型替换原听骨链,得到置换听骨后的人中耳模型;利用此模型分析重建听骨后的传音效果,再根据响应的特征对人工听骨几何形状做出相应的调整。结果经过数次分析与模型改进,最终得到一个较为合理的简易人工听骨形状;置换该人工听骨后的镫骨足板位移曲线和镫骨足板振动模式与正常中耳模型曲线比较接近。结论利用钛板合理地改制为低成本人工听骨可用于听骨重建手术;有限元模拟分析结果可为设计新型简易的钛板改制人工听骨提供参考依据。Objective To design the cheap total ossicular replacement prosthesis （TORP） made of titanium plate and to analyse its dynamical behavior using finite element method. Methods The titanium plate was cut and folded to get the rural TORP shape. Then in the finite element model,the ossicles were replaced by the TORP model. At last the shape was amended according to numerical result. Results After some analysis and adjustments, we obtained a reasonable TORP with which the FEM model＇ s dynamical behavior was close to the normal model. Conclusions The simply constructed TORP can be used on the reconstruction of ossicular chain and the simulation results in the paper can be the reference for the TORP design.

关 键 词：钛板 全听骨赝复物 有限元模型 镫骨足板 振动模式 

分 类 号：R764[医药卫生—耳鼻咽喉科]