Computer simulation of the circulatory system during support with a rotary blood pump.
Computer simulation of the circulatory system during support with a rotary blood pump.
复制标题
使用旋转血泵支持期间循环系统的计算机模拟。
DOI：
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发表时间：
1990
期刊：
影响因子：
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通讯作者：
Herwig Thoma
中科院分区：
文献类型：
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作者：
Heinz Schima;J. Honigschnabel;W. Trubel;Herwig Thoma
为了研究非脉动离心泵的性能特征及其与脉动心脏的相互作用，开发了计算机仿真模型。泵的模型，包括插管以及插管和左心房壁的干扰，被添加到循环模拟器中。它是在PC-AT上使用模拟仿真软件AGO1000实现的。每个计算步骤实时评估 1 毫秒的间隔，以提供稳定的结果。计算速度约为每步 100 毫秒。首次模拟研究表明，插管的位置和阻力对系统性能产生重大影响，并平衡了无叶泵和叶轮泵的不同压力-流量特性（dp/dQ 差异从无插管时的 6 倍以上下降到有插管时的 130%）。此外，还可以正确模拟心房插管吸力的影响以及泵血功率变化期间心室性能的变化。与动物试验的比较证明，该模型是测试离心泵控制算法的合适工具。
In order to investigate the performance characteristics of nonpulsatile centrifugal pumps and their interaction with the pulsating heart, a computer simulation model was developed. A model of the pump, including the cannulae and the interference of the cannula and the left atrial wall, was added to a simulator of the circulation. It was implemented on a PC-AT using the analog simulating software AGO1000. An interval of 1 msec real-time per calculation step was evaluated to provide stable results. The calculation speed was approximately 100 msec per step. First simulation studies showed that both the positioning and resistance of the cannulae exert a major influence on system performance and equalized the different pressure-flow characteristics of vaneless and impeller pumps (difference of dp/dQ decreases from more than 6 times without cannulae to 130% with cannulae). In addition, the effects of suction in the atrial cannula, and changes of ventricular performance during changes in pumping power, could be properly simulated. The comparison with animal tests proved that the model is a suitable tool for testing control algorithms for centrifugal pumps.