腹腔镜抓钳的力学性能-《中国医学物理学杂志》

文章信息/Info

作者:: 韩梁1; 韩宝三2; 宋成利1; 闫士举1; 张涛3; 4; 王成勇3; 1.上海理工大学医疗器械与食品学院，现代微创医疗器械及技术教育部工程研究中心，上海 200093； 2.上海交通大学医学院附属新华医院，上海 200092； 3.广东工业大学机电工程学院，广东广州 510000； 4.东莞宜安新材料研究院有限公司，广东东莞 523662

Author(s):: HAN Liang1; HAN Baosan2; SONG Chengli1; YAN Shiju1; ZHANG Tao3; 4; WANG Chengyong3; 1. Engineering Research Center for Modern Minimally Invasive Device and Technology (Ministry of Education), School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China; 2. Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine，Shanghai 200092, China; 3. School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou 510000, China; 4. Institute of Eontech New Materials Co., Ltd., Dongguan 523662, China

Keywords:: Keywords: laparoscopic grasper; liver tissue; finite element analysis

摘要:: 目的：利用有限元的方法分析各种腹腔镜抓钳的形貌，为腹腔镜抓钳的设计提供依据。方法：分析抓取肝脏组织时，抓钳倒圆半径、齿数、钳头面积、雕镂面积对组织-器械接触面最大等效应力的影响，并通过正交试验分析以上因素的主次要地位。结果：随着组织-器械接触面有效接触面积的增加，产生的最大等效应力及其变化率逐渐变小。4种因素的主次要地位依次为：钳头面积>齿数>倒圆半径>雕镂面积。结论：应根据需要选择最优的抓钳，防止产生过大的等效应力，损伤组织，并且应以钳头面积为主，另外3种因素为辅进行腹腔镜抓钳设计。

Abstract:: Abstract: Objective To analyze the surface features of various laparoscopic graspers by finite element method and provide a basis for the design of laparoscopic graspers. Methods The effects of rounding radius, tooth number, jaw areas and fenestration areas on the maximum equivalent stress of the tissue-device contact surface while grasping the liver tissues were analyzed and the effects of the above factors were ordered by orthogonal test. Results As the effective contact area of the tissue-device contact surface increased, the maximum equivalent stress and its change rate became smaller. The effects of jaw area on the maximum equivalent stress of the tissue-device contact surface was the largest, followed by tooth number, rounding radius and fenestration area. Conclusion The optimal grasper should be selected according to the needs so as to prevent excessive equivalent stress and tissue damages. During the design of laparoscopic grasper, the jaw area should be the main consideration, and the others are supplementary consideration factors.