摘要
为评测人工心脏,尤其是直接辅助式人工心脏,本文提出了利用泵、阀、管道、弹性腔和相应的控制器建立一套能反映血液动力学特性的简易体外血液循环模拟实验装置的方法。在该装置中,任意时刻流量的估计,是利用测量模拟心脏的血压和循环周期总流量获得。通过改变控制信号的频率、占空比和阀的开度模拟心脏不同心率、不同心收缩周期、不同程度的泵血功能,实验结果与生理情况分析基本相符合。该装置的模拟心脏具有类似心脏的形状,直接心辅装置可以直接固定在其上工作。
In order to study the cardiovascular hemodynamic characteristics and evaluate the artificial heart,especially the compression cardiac assist devices, we put forward a simulating device which is made of pump,valve,tubes and controller,and can be used to imitate cardiovascular system.Moreover,in this essay,we put forth an algorithm to draw pressure-volume loop with the parameters measured,including liquid pressure,volume and air pressure.The changes in the frequency and duty of control signal and in the angle of proportional valve can symbolize cardiovascular system in different heart rates,with different systole period,and at different level,respectively.The result of simulating device experiment proved to be coincident with physiology.
出处
《生物医学工程学杂志》
EI
CAS
CSCD
北大核心
2010年第1期165-169,共5页
Journal of Biomedical Engineering
基金
国家自然科学基金资助项目(30670524)
上海市浦江人才计划项目资助(07pj14054)
教育部留学回国人员启动经费资助
关键词
心血管系统
模拟试验装置
人工心脏
Cardiovascular system
Simulating experimental equipment
Artificial heart
