大鼠臂丛神经的蠕变特性  

Creep properties of rat brachial plexus

作　　者：冯铁健[1] 孙长江[2] 罗民[2] 马洪顺[3] 

机构地区：[1]吉林大学南岭校区医院,吉林省长春市130022 [2]吉林大学中日联谊医院,吉林省长春市130031 [3]吉林大学南岭校区工程力学系,吉林省长春市130022

出　　处：《中国组织工程研究与临床康复》2010年第28期5244-5247,共4页Journal of Clinical Rehabilitative Tissue Engineering Research

摘　　要：背景:臂丛神经损伤缝合吻接有必要了解臂丛神经蠕变力学特性。以往的研究多以臂丛神经的单项拉伸力学性质研究居多,关于臂丛神经蠕变黏弹性力学性质的研究鲜有报道。目的:以函数为研究方式观察分析实验动物臂丛神经的蠕变力学特性,为临床提供蠕变力学特性参数。方法:采用日本岛津电子万能试验机对SD大鼠臂丛神经进行蠕变实验。蠕变实验应力增加速度为0.01GPa/s,实验设定时间为7200s,采集100个实验数据,以归一化分析的方法处理实验数据。结果与结论:大鼠臂丛神经试样7200s蠕变为5.6%。蠕变最初600s变化较快,之后应变缓慢上升,达到7200s曲线基本平衡。结果表明蠕变曲线是以指数关系变化的,臂丛神经具有黏弹性蠕变力学特性。BACKGROUND： The suture anastomosis of brachial plexus injury brachial plexus is necessary to understand the mechanical creep characteristics. Previous studies mainly focus on tensile mechanical properties of brachial plexus. Reports concerning creep on the brachial plexus viscoelastic properties are few. OBJECTIVE： To analyze the experimental animals creep mechanical properties of the brachial plexus in order to provide creep parameters for clinic. METHODS： Shimadzu Universal testing machine was used to perform creep experiments of brachial plexus in experimental animals. The speed of creep stress increase was 0.01 GPa/s, with experimental time of 7 200 s. In total 100 experimental data were collected and processed using normalized analysis. RESULTS AND CONCLUSION： Creep of animal brachial plexus specimen at 7 200 s was 5.6%. Creep values change rapidly during the first 600 seconds, and then strain was increased slowly and the value of equilibrium curve could be reached at 7 200 s. The results show that the creep curve changes in an exponential relationship, and the brachial plexus has mechanical properties of viscoelastic creep.

关 键 词：臂丛神经 蠕变 黏弹性 函数 神经组织工程 

分 类 号：R318[医药卫生—生物医学工程]