基于“心肌桥-冠状动脉”模拟装置的周向应力研究  

A Study on Circumferential Stress with "Myocardial Bridge-Coronary Artery" Simulative Device

作　　者：丁皓[1,2] 赵灵犀[1,2] 尚昆[1,2] 徐萌[1,2] 沈力行[1,2] 

机构地区：[1]上海理工大学生物力学与康复工程研究所,上海200093 [2]上海医疗器械高等专科学校,上海200093

出　　处：《中国生物医学工程学报》2011年第2期276-280,共5页Chinese Journal of Biomedical Engineering

基　　金：上海市研究生创新基金(JWCXSL1002)

摘　　要：研制一种心肌桥压迫冠状动脉的模拟装置,用以研究壁冠状动脉近端与远端周向应力的动态变化,并可实现其独立调节。制作"心肌桥-冠状动脉"模拟装置,分别改变模拟冠状动脉外压和心肌桥压迫程度并记录周向应力的变化情况。结果表明,周向应力的异常主要位于壁冠状动脉近端,随着心肌桥压迫程度加剧,近端的周向应力平均值与震荡值(最大值-最小值)明显增大。"心肌桥-冠状动脉"模拟装置能提供体外研究周向应力对血管影响的实验手段。In order to study the dynamics of circumferential stress in myocardial bridge coronary artery,we developed a device simulating myocardial bridge oppressing coronary artery.The device imitated the structure of myocardial bridge-coronary artery.The circumferential stress was recorded when outside pressure of simulative mural coronary artery and oppressive degree changed,respectively.The results showed that anomalies of circumferential stress were mainly located in the proximal of myocardial bridge coronary artery.When the degree of stenosis increased,the average circumferential stress and the oscillatory value of circumferential stress（maximum-minimum） increased significantly.Our device supplies an in vitro experimental condition to study the effect of circumferential stress on artery.

关 键 词：心肌桥 冠状动脉 血流动力学 周向应力 

分 类 号：R318[医药卫生—生物医学工程]