大腿假肢接受腔几何建模方法和实验研究  

Geometric Modeling of Prosthetic Socket

作　　者：曹学军[1,2] 倪先胜[3] 刘文勇[3] 王君臣[3] 李丰[3] 李同磊[1,2] 

机构地区：[1]中国康复研究中心康复工程研究所,北京市100068 [2]首都医科大学康复医学院,北京市100068 [3]北京航空航天大学机械工程及自动化学院,北京市100083

出　　处：《中国康复理论与实践》2009年第3期283-285,共3页Chinese Journal of Rehabilitation Theory and Practice

摘　　要：目的探讨大腿假肢接受腔的几何建模方法。方法通过统计分析建立接受腔参考形状并集成进计算机辅助接受腔设计CASD软件。接受腔设计时,根据残端的测量数据,利用参考形状变化得到个体化的初始接受腔形状;借助OpenGL环境下的三维交互选择和修改方法,得到最终的接受腔几何形状。在专用数控设备上进行加工试验。结果该方法操作简便,设计和制作的接受腔阳模形状一致,满足精度要求。结论本方法基本符合临床需求,但需要进一步优化交互修改时的模型表面变化规律。Objective To investigate the geometric modeling method for trans-femoral prosthetic socket. Methods The socket reference shapes （i. e. shape templates） were constructed based on the statistic analysis and integrated into the CASD program. The initial socket shape was obtained by transformation from the corresponding reference shape based on the data from the patient＇s stump and the final socket shape was determined by a kind of three-dimensional interaction method under the OpenGL environment. The fabrication experiment is conducted on the specialized numerical control machine. Results The interactive modification method was easy to use. The machined socket mold is consistent with the designed model in the shape and the precision. Conclusion This method can meet the clinical requirements in the main, but need to optimize the surface shaping characters and rules during the interactive modification stage.

关 键 词：计算机辅助接受腔设计 几何建模 假肢接受腔 

分 类 号：R687.5[医药卫生—骨科学] R783[医药卫生—外科学]