不同材料镫骨赝复体术后听力效果的有限元分析  

Finite element analysis of hearing improvement of the stapes protheses with different materials

作　　者：黄新生[1] 姚文娟[2] 付黎杰[2] 谢晓凤[1] 刘骏桢[3] 林江[3] 聂喜林[1] 

机构地区：[1]复旦大学附属中山医院耳鼻喉科,上海200032 [2]上海大学应用数学和力学研究所,上海200072 [3]复旦大学附属中山医院放射科,上海200032

出　　处：《复旦学报（医学版）》2008年第6期815-818,共4页Fudan University Journal of Medical Sciences

基　　金：上海市科委基础研究重点项目(08JC1404700)

摘　　要：目的探讨不同材料的镫骨赝复体对镫骨置换术后听力效果的影响。方法根据复旦大学附属中山医院提供的人体正常耳CT扫描结果,用自编软件将CT扫描数值化并导入PATRAN重建三维有限元模型,应用动力学的传导振动原理,对正常的听小骨结构进行动力数值计算分析,并与目前已报道的试验结果对比。对同种置换方式下采用不同材料(不锈钢、钛合金、生物陶瓷)的镫骨赝复体所重建的听骨链结构进行动力数值计算分析,并与正常的听骨链结构力学行为进行对比。结果本文所建立的中耳三维有限元模型形态符合人体中耳,由该模型计算所得频率响应曲线与新鲜颞骨测试所得频率响应曲线其大小及分布基本一致。钛合金材料的镫骨赝复体振幅和正常人体的镫骨底板振幅最为接近,生物陶瓷次之,而不锈钢镫骨赝复体最差。结论采用钛合金镫骨赝复体术后听力恢复最好。钛合金是一种理想的制作镫骨赝复体的材料。Objective To evaluate the hearing improvement of the stapes protheses with different materials. Methods The CT data of ossieular chain from Zhongshan Hospital of Fudan University were digitalized and imported into PATRAN （a world class commercial software） to build a 3 dimensional finite element model （FEM）. Then the normal ossicular model was analyzed based on dynamic transmitting vibration principles and the calculation results were evaluated and compared with the results of previous studies. The ossicle models reconstructed by the stapes protheses with different materials were analyzed based on dynamic transmitting vibration principles and compared with the normal ossieular chain. Results The ossicle 3D model established in the present study was in accord with biological structure of the human. The frequency reaction curves obtained by the model proposed in the present study agreed well with the fresh temporal bone ones. The amplitude of titanium alloys stapes protheses was almost the same as that of the normal ones,the second was bioceramics,the last was stainless steel. Conclusions The hearing improvement of the stapes protheses with titanium alloys is the best,titanium alloys is a desirable material for stapes protheses.

关 键 词：听小骨 有限元 赝复体 手术效果 材料 

分 类 号：R764.93[医药卫生—耳鼻咽喉科] R318.01[医药卫生—临床医学]