一种胆囊切除虚拟手术仿真训练平台研究  

Research on Cholecystectomy Virtual Surgery Simulation Training Platform

作　　者：汪军[1] 刘冬[2] 

机构地区：[1]安徽工程大学计算机与信息学院,芜湖241000 [2]皖南医学院弋矶山医院信息中心,芜湖241000

出　　处：《系统仿真学报》2016年第8期1853-1862,共10页Journal of System Simulation

基　　金：国家自然科学青年科学基金(61300170);安徽省自然科学基金(1308085MF88);高校省级自然科学重点项目(KJ2015A311)

摘　　要：实时性、变形逼真、手感真实是虚拟手术具有沉浸感的主要因素。从这些要素出发搭建了一种具有力反馈手感的胆囊切除虚拟手术仿真训练平台,在实时性上,提出一种不同的模型采用不同的包围盒碰撞检测的Capsule-Sphere混合碰撞检测方法;在受力变形上,提出一种网格-骨架模型的质点弹簧形变方法;并在前期研究的虚拟手术力反馈手柄上进行了测试。实验结果表明,将这两种模型应用于胆囊切除虚拟手术研究中,仿真训练平台能动态、实时、逼真地模拟软组织的变形过程,力反馈手感真实稳定。The main performance factors in virtual surgery system with immersion are real-time, realistic deformation and smooth feel handle. A kind of cholecystectomy simulation training platform with force feedback feel was built, putting forward a kind of collision detection method based on Capsule-Sphere mixture model of different model with different bounding box in the real-time and a kind of mass-spring deformation method based on mesh-skeleton model in the force-deformation, and being tested on the virtual surgery force feedback device in prophase research. The experimental results show that the two modes are applied to the virtual cholecystectomy simulation and the platform can simulate the real-time realistic soft tissue deformation process and stability force feedback feel.

关 键 词：虚拟手术 力反馈 碰撞检测 变形 

分 类 号：TP391.1[自动化与计算机技术—计算机应用技术]