CAJ | 학술논문

背景:臂丛神经损伤缝合吻接有必要了解臂丛神经应力松弛力学特性.以往的研究多以臂丛神经的单项拉伸力学性质研究居多,关于臂从神经应力松弛、蠕变黏弹性力学性质的报道较少.目的:以函数为描述方式观察分析实验动物臂从神经的应力松弛力学特性,为临床提供实验参数.设计、时间与地点:以函数为描述方式的单因素观察性实验,于2007-03-01/10在吉林大学力学实验中心完成.材料:雄性6月龄SD大鼠由长春市高新医学动物实验中心提供.方法:在日本岛津电子万能试验机上对大鼠臂丛神经进行应力松弛实验,应变增加速度为1%/s,设定时间为7200s,采集100个实验数据,以一元线性回归分析的方法处理实验数据.主要观察指标:应力松弛数据和曲线,应力与时间的变化规律.结果:实验动物臂丛神经试样7 200 s应力松弛量为0.316 MPa.应力松弛曲线是以对数关系变化的,应力松弛最初600 s变化较快,之后应力缓慢下降,达到7 200s曲线基本平衡.结论:应力松弛曲线是以对数关系变化的,臂从神经具有黏弹性力学特性.
배경:비총신경손상봉합문접유필요료해비총신경응력송이역학특성.이왕적연구다이비총신경적단항랍신역학성질연구거다,관우비종신경응력송이、연변점탄성역학성질적보도교소.목적:이함수위묘술방식관찰분석실험동물비종신경적응력송이역학특성,위림상제공실험삼수.설계、시간여지점:이함수위묘술방식적단인소관찰성실험,우2007-03-01/10재길림대학역학실험중심완성.재료:웅성6월령SD대서유장춘시고신의학동물실험중심제공.방법:재일본도진전자만능시험궤상대대서비총신경진행응력송이실험,응변증가속도위1%/s,설정시간위7200s,채집100개실험수거,이일원선성회귀분석적방법처리실험수거.주요관찰지표:응력송이수거화곡선,응력여시간적변화규률.결과:실험동물비총신경시양7 200 s응력송이량위0.316 MPa.응력송이곡선시이대수관계변화적,응력송이최초600 s변화교쾌,지후응력완만하강,체도7 200s곡선기본평형.결론:응력송이곡선시이대수관계변화적,비종신경구유점탄성역학특성.
BACKGROUND:The brachial plexus injury anastomosis suture technique is necessary to understand the mechanics characteristic of brachial plexus nerve stress relaxation.Previous studies mainly focused on single tension mechanics of brechial plexus nerve,but few studies concerning stress relaxation and creeping elasticity.OBJECTIVE:To observe and analyze experimental animal brachial plexus nerve stress relaxation mechanics characteristic in the description manner of function,to provide experimental parameters for clinic.DESIGN,TIME AND SETTING:The experimental observations to use function as a way to describe from 1~(st) to 10~(th_ March,2007 at the Experimental Center of Jilin University.MATERIALS:The experimental male Sprague Dawley rats aged 6 months were provided by Changchun Gaoxin Medicine Animal Experimentation Center.METHODS:The stress relaxation experiment was performed in Experimental animal Brachial plexus Nerve on the the electronic universal testing machine (Shimadzu,Japan).The stress relaxation experiment strain increased speed was 1%/s,setting time of 7 200 seconds.100 empirical data were collected and disposed by one-way linear regression analysis.MAIN OUTCOME MEASURES:The stress relaxation data and curve,the Stress and time change rule were measured.RESULTS:The stress relaxation quantity of animal brachial plexus nerve test specimen at 7 200 s was 0.316 MPa.Stress relaxation curve changed with logarithm.Stress relaxation changed rapidly at 600 seconds,decreased gradually,and reached a balance level at 7 200 seconds.CONCLUSION:The stress relaxation curve changed with the logarithm relations.Brachial plexus has visco-elastic mechanical properties.