Another way of pumping blood with a rotary but noncentrifugal pump for an artificial heart.
Another way of pumping blood with a rotary but noncentrifugal pump for an artificial heart.
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另一种使用旋转非离心泵为人造心脏泵血的方法。
DOI：
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发表时间：
1990
期刊：
影响因子：
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通讯作者：
B. Candelon
中科院分区：
文献类型：
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作者：
J. Monties;T. Mesana;P. Havlík;J. Trinkl;J. Demunck;B. Candelon
本文描述了一种在体内泵送血液的替代模式。该设备是一种非离心、无阀、低速旋转泵，电动，基于汪克尔发动机原理。作者开发了一种植入式电致动器，从而形成一种紧凑、密封的电机泵装置，其电气和磁性组件与流体绝缘。流量曲线和泵送作用的结果显示了一些共同点，但与经典的脉动泵或离心泵相比也有一些基本差异。来自心房的血液遵循连续的运动，没有任何停止流动，但具有产生脉动的变化。泵的喷射和填充是同时进行的。它始终是一个活跃的填充物。液压效率取决于泵送室中的间隙和出口端口压力。一个60毫升的设备允许流量高达8-9升。植入式电机为圆柱形，重量适中（490克），效率良好（在平均主动脉压为150 mm Hg时，转速为90 rpm时效率为32%）。作者得出结论，他们的设备可以在进一步的实验研究后提出，作为LVAD用于短期辅助，具有良好的永久应用前景。
This article describes an alternative mode of pumping blood inside the body. The device is a non centrifugal, valveless, low speed rotary pump, electrically powered, based on Wankel engine principle. The authors developed an implantable electrical actuator resulting in a compact, sealed motor-pump unit with electrical and magnetic components insulated from fluids. The results in the flow curve and in the pumping action show some common points but also some basic differences compared to classical pulsatile pumps or centrifugal pumps. The blood coming from the atrium follows a continuous movement without any stop flow but with variations creating pulsatility. Ejection and filling of the pump are simultaneous. It is always an active filling. Hydraulic efficiency depends on clearance in the pumping chamber and outlet port pressure. A 60 cc device allows flows up to 8-9 liters. The implantable motor is cyclindrical in shape, has a moderate weight (490 grams) and presents a good efficiency (32% for a rotary speed of 90 rpm against a mean aortic pressure of 150 mm of Hg). The authors conclude that their device could be proposed after further experimental studies, as an LVAD for shortterm assistance with a good promise for permanent application.