CAJ | 학술논문

对比分析胎儿脐静脉与大脑中动脉的力学特性，为大脑中动脉损伤以胎儿脐静脉移植修复提供生物力学特性基础。取正常人新鲜尸体大脑中动脉与新鲜胎儿脐静脉各15个试样进行拉伸实验。分别将大脑中动脉和胎儿脐静脉试样装夹在电子万能试验机的夹头内，以0．3 mm／min的实验速度对试样进行实验。结果表明，胎儿脐静脉的弹性限度应变值、最大应变值大于大脑中动脉组，差异显著（P＜0．05），胎儿脐静脉组最大应力、弹性模量值小于大脑中动脉组，差异显著（P＜0．05）。胎儿脐静脉的应力－应变曲线和大脑中动脉的应力－应变曲线变化规律相似。胎儿脐静脉的拉伸力学特性有利于移植大脑中动脉损伤的修复。
대비분석태인제정맥여대뇌중동맥적역학특성，위대뇌중동맥손상이태인제정맥이식수복제공생물역학특성기출。취정상인신선시체대뇌중동맥여신선태인제정맥각15개시양진행랍신실험。분별장대뇌중동맥화태인제정맥시양장협재전자만능시험궤적협두내，이0．3 mm／min적실험속도대시양진행실험。결과표명，태인제정맥적탄성한도응변치、최대응변치대우대뇌중동맥조，차이현저（P＜0．05），태인제정맥조최대응력、탄성모량치소우대뇌중동맥조，차이현저（P＜0．05）。태인제정맥적응력－응변곡선화대뇌중동맥적응력－응변곡선변화규률상사。태인제정맥적랍신역학특성유리우이식대뇌중동맥손상적수복。
To analyze the mechanical characteristics of the fetal umbilical vein and the middle cerebral artery,to provide the basis for the biomechanical properties of fetal umbilical vein graft to repair the damage of the middle cerebral artery.15 samples of brain′s ar-tery and fetal umbilical vein were collected respectirdy and conducted tensit letest.The samples of middle cerebral artery and fetal um-bilical vein were respectively clamped in the chuck electronic universal testing machine,and then the samples were based on experi-mental speed at 0.3 mm/min.The experimental results showed that the elastic limit strain of ffetal umbilical vein,the value of maxi-mum strain value were greater than that of the middle cerebral artery,the differences were significant (P<0.05).Maximum stress and elastic modulus value of the group of fetal umbilical vein were less than that of the group of middle cerebral artery,the differences were significant (P<0.05).The strain curve of the artery force of fetal unbilical vein was similar to the curve of stress-strain of the brain′s change.It is concluded that the tensile mechanical praperties of fetal umbilical vein can repair the damage of the transplantation of the middle cerebral artery.