角膜缝合操作建模及有限元仿真规划  

Model establishment and finite element planning for suturing manipulation in corneal surgery

作　　者：徐存良[1] 杨洋[1] 王璐[1] 王哲[1] 

机构地区：[1]北京航空航天大学机械工程及自动化学院,北京市100191

出　　处：《中国组织工程研究与临床康复》2009年第52期10291-10296,共6页Journal of Clinical Rehabilitative Tissue Engineering Research

基　　金：国家自然科学基金资助项目(50675008)~~

摘　　要：角膜缝合操作是角膜移植成功的关键。首先,通过分析角膜的缝合操作过程,建立了角膜移植缝合过程的几何模型。在不考虑角膜组织黏弹性的条件下,进行了单个缝合过程的路径规划。在此基础上,考虑角膜组织缝合过程中的弹性,利用有限元分析软件ANSYS对角膜缝合过程进行了模拟,规划了缝针在角膜组织变形条件下的工作路径,并计算出缝针在缝合过程中的位置与姿态变化曲线。实验结果可用于指导角膜缝合机器人完成缝合操作任务。Suturing is the key to the success of corneal transplant surgery. By analyzing the suturing-process of corneal, a model for suturing was established. A suturing theorietical trajectery was proposed without considering the viso-elasticity of corneal. Then, a suturing simulation was done with the ANSYS software, the manipulating trajectory was planned for corneal soft-tissue with viso-elasticity, correspondingly, and the position and posture of needle in suturing were obtained. The study can be used for suturing manipulation in cornea suture surgical.

关 键 词：角膜 缝合操作 有限元模型 数字化医学 

分 类 号：R772.2[医药卫生—眼科]