Safety of laparoscopic graspers with different configurations during liver tissue clamping  

作　　者：Jin Wang Li Ma Wei Li Zhongrong Zhou 

机构地区：[1]School of Mechanical Engineering,Southwest Jliaotong University,Chengdu 610031,People's Republic of China

出　　处：《Biosurface and Biotribology》2018年第2期50-57,共8页生物表面与生物摩擦学（英文）

基　　金：National Natural Science Foundation of China(no.51675447 and no.51290291).

摘　　要：Laparoscopic graspers often induce liver damage when large forces are applied during clamping.Here,the safety of graspers with different edge curvature radi,teeth profiles,and jaw windows was evaluated experimentally using a tissue damage assessment method based on in vivo compression tests in a rabbit liver model.The results showed that the degree of damage to liver tissue was associated with the deformation in the tissue and the grasper configuration.Changing the jaw teeth profile from a wedge to a sine,increasing the curvature radius of the jaw edge,reducing the contact coefficient of the square window of the jaw,and increasing the length of the window edge alleviated the damage to liver tissue when a clamping force of 2 N was applied.The results can guide the selection and design of non-traumatic graspers.

关 键 词：DAMAGE CURVATURE CLAMPING 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]