人体四肢正常动、静脉纵向残余应变与应力-应变关系  

LONGITUDINAL RESIDUE STRAIN AND STRESS-STRAIN RELATION OF EXTREMITIES ARTERIES AND VEINS IN HUMAN

作　　者：颉强[1] 黄耀添[1] 赵黎[1] 杨柳[1] 李珏[2] 

机构地区：[1]第四军医大学西京医院全军骨科研究所,710032 [2]西安交通大学工程力学研究所

出　　处：《医用生物力学》1999年第2期90-96,共7页Journal of Medical Biomechanics

基　　金：国家自然科学基金

摘　　要：目的：探讨人体四肢正常动、静脉的纵向残余应变特性和应力－应变关系，以及对临床修复血管损伤时方法选择的影响。方法：以人体正常血管标本为研究对象，通过血管拉伸试验及检测血管纵向伸长率，获取四肢正常动、静脉纵向残余应变及应力－应变变化规律。结果：人体四肢主要动脉由近心端向远心端走行，纵向伸长率逐渐减小，静脉与之相反；四肢主要动脉与头静脉、大隐静脉纵向伸长率间大多存在明显差异（p＜0．05）。四肢主要动脉由近心端向远心端走行，应力－应变关系曲线逐渐右移，静脉与之相反；相对应部位动、静脉间应力－应变关系曲线明显不同（p＜0．05）。结论：人体四肢主要动脉由近心端向远心端走行，纵向残余应变逐渐减小，血管刚度值逐渐减小，静脉与之相反．提示临床修复四肢不同部位动、静脉伤时，应考虑其相应血管的力学特性影响。To investigate the longitudinal residue strain and stress-strain relation of extremitiesarteries and veins in human, evaluated the particular reference to the option of vascular repair.Methods: A mechanical analysis including stretch experiment and longitudinal stretch ratiomeasurement was undertaken to evaluated.the longitudinal residue strain and stress-strain relationof extremities arteries and veins in human. Results: The longitudinal stretch ratio of extremitiesartery decreased along vessel branch but that of vein increased. There was significant differenceamong the longitudinal stretch ratio of extremities artery and those of branchiocephalicae vein orsaphena megna vein but subclavia and femoral artery (p<0.05). The longitudinal stretch ratio ofvein was higher than those of artery at same level. The stress-strain relation curve of artery turnedright along vessel branch but that of vein turned left .Conclusion: The longitudinal residue strainand the stiffness of extremities artery decreased along vessel branch but that of vein increased. Itsuggested to orepair the injuried vessel according to the biomechanlcal effect.

关 键 词：四肢 动脉损伤 残余应变 应力-应变 

分 类 号：R654.4[医药卫生—外科学] R318.01[医药卫生—临床医学]