腹腔镜手术悬吊系统的设计与仿真分析  

Design and Simulation Analysis of Suspension System for Laparoscopic Surgery

作　　者：高芳 崔海坡[1] 周琪[2] 王礼国 安明晖 何应荣 GAO Fang;CUI Haipo;ZHOU Qi;WANG Liguo;AN Minghui;HE Yingrong(Shanghai Engineering Research Center of Interventional Medical Devices,University of Shanghai for Science and Technology,Shanghai 200093,China;Department of Thoracic Surgery,Shidong Hospital of Shanghai Yangpu District,Shanghai 200438,China)

机构地区：[1]上海理工大学上海介入医疗器械工程技术研究中心,上海200093 [2]上海市杨浦区市东医院胸外科,上海200438

出　　处：《医用生物力学》2022年第5期946-951,共6页Journal of Medical Biomechanics

基　　金：上海市自然科学基金项目(19ZR1435300);上海工程技术研究中心资助项目(18DZ2250900)。

摘　　要：目的基于现有的气腹装置,在低气压的前提下,设计一款用于微创手术的新型悬吊系统,以暴露更多手术视野,便于手术顺利进行。方法利用Solidworks软件完成悬吊系统的结构设计,并基于有限元仿真分析技术,研究医用不锈钢、钛合金Ti6Al4V、钛合金Ti6Al7Nb和纯钛4种不同夹子制作材料以及尼龙(polyamide⁃6,PA6)、涤纶、聚丙烯(polypropylene,PP)3种不同中间平面结构制作材料对悬吊系统使用性能的影响。结果4种不同材料的夹子在夹持组织过程中,组织的形变量均较低,不会出现所夹持组织从夹子中滑脱的现象。就应力而言,选用医用不锈钢材料时,夹子及其夹持组织的应力均最低;对于中间平面结构的制作材料而言,当选取涤纶材料时,在悬吊系统工作过程中,中间平面结构会在外载荷作用下发生破坏;当选用PP材料时,中间平面结构会发生永久变形,且形变量最高,不利于临床手术的进行。结论选择医用不锈钢作为夹子的制作材料为最佳。不宜选择涤纶作为中间平面结构的制作材料,选择PA6作为中间平面结构的制作材料为最优。Objective Based on the existing pneumoperitoneum device,a new suspension system for minimally invasive surgery was designed under the condition of low pressure,ao as to expose more surgical vision and facilitate the smooth operation.Methods Structure design of the suspension system was completed with Solidworks software.Based on the finite element simulation analysis technology,the effects of four different clamp materials,i.e.medical stainless steel,Ti6Al4V,Ti6Al7Nb and pure titanium,and three different mid⁃plane structure materials,i.e.nylon(PA6),polyester and polypropylene(PP),on performance of the suspension system were studied.Results In the process of clamping tissue by clamps with four different materials,the tissue deformation was lower.The gripped tissue did not slip out of the clamp.The stress of the clamp and its holding tissues were the lowest when the medical stainless steel material was selected.For the material of the mid⁃plane structure,when polyester was selected,the mid⁃plane structure would be destroyed under external loading in working process of the suspension system.When PP material was selected,the mid⁃plane structure would have the largest deformation,which was not conducive to the clinical operation.Conclusions The best material for clamp is medical stainless steel.It is not suitable to choose polyester as the material of the mid⁃plane structure,and choosing PA6 as the material of the mid⁃plane structure is the best.

关 键 词：悬吊系统 腹腔镜手术 组织形变 

分 类 号：R318.01[医药卫生—生物医学工程]