颅骨修复手术保护罩的设计与增材制造  

Design and Additive Manufacturing of Protective Cover for Skull Repair Surgery

作　　者：彭彦龙 彭春雷[1] 陈建刚[1,2] 李建刚[1] 杨立峰 史会明[4] 石淑婷 梁永永 PENG Yanlong;PENG Chunlei;CHEN Jiangang;LI Jiangang;YANG Lifeng;SHI Huiming;SHI Shuting;LIANG Yongyong(School of Mechanical Engineering,Shaanxi University of Technology,Hanzhong,Shaanxi 723001,China;School of Mechanical Engineering,Xi’an Jiaotong University,Xi’an,Shaanxi 710049,China;Deparment of Orthopedics,Hanzhong 3201 Hospital Affiliated to Xi’an Jiaotong University,Hanzhong,Shaanxi 723001,China;Hanzhong Central Hospital,Hanzhong,Shaanxi 723001,China)

机构地区：[1]陕西理工大学,机械工程学院,陕西汉中723001 [2]西安交通大学,机械工程学院,陕西西安710049 [3]西安交通大学附属汉中3201医院骨科,陕西汉中723001 [4]汉中市中心医院,陕西汉中723001

出　　处：《塑料》2022年第4期34-39,共6页Plastics

基　　金：陕西省教育厅专项科学研究计划(17JK0149);陕西省科技厅一般项目研发计划(2022GY-257)。

摘　　要：针对颅骨损伤患者术后康复外部保护问题,使用逆向工程和医学影像技术重构CT扫描数据,设计出光滑壁面和交叉筋条2种聚乳酸保护罩结构,通过CAE数值分析发现,交叉筋条保护罩相对于光滑壁面保护罩外表面温度分布不集中,有利于降温,而且,其等效应力、等效弹性应变相对较小,结构更优。为了提高交叉筋条保护罩的力学性能,通过试验件填充密度、层厚、填充图案以及拉伸强度信噪比响应分析,优化保护罩增材制造成型过程,得出了试验件最优工艺参数,即层厚为0.1 mm,填充密度为100%,填充图案为网格,并按照最优参数对交叉筋条保护罩进行增材成型。聚乳酸交叉筋条保护罩有利于扩展聚乳酸的应用领域,并为颅脑术后康复外部保护装置提供一种可行性方案。Aiming at the problem of external protection for postoperative rehabilitation of patients with skull injury,reverse engineering and medical imaging technology were used to reconstruct CT scan data,and two kinds of polylactic acid protective cover structures,smooth wall and cross stiffeners were designed.Through CAE numerical analysis,it was found that the external surface temperature distribution of cross stiffener protective cover was not concentrated compared with that of smooth wall protective cover,which was conducive to cooling,and the equivalent stress and equivalent elastic strain were relatively small,so the structure was better.To improve the mechanical properties of cross stiffeners protective cover,the additive manufacturing process of the protective cover was optimized by filling density,layer thickness,filling pattern,and signal-to-noise ratio response analysis of tensile strength.The optimal process parameters of the test piece were obtained,which the layer thickness was 0.1 mm,the filling density was 100%,and the filling pattern was mesh.The proposal of polylactic acid cross stiffeners protective cover is conducive to expanding the application field of polylactic acid and providing a feasible scheme for the external protection device of rehabilitation after the craniocerebral operation.

关 键 词：颅骨修复 聚乳酸保护罩 数值分析 拉伸强度 增材成型 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术] TQ320.66[自动化与计算机技术—计算机科学与技术]