短期辅助用直流电磁驱动搏动式血泵设计与测试

doi:10.3969/j.issn.0258-8021. 2018. 01.007

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Abstract The aims of this work are to design a pulsating blood pump driven by direct-current electromagnetism and to evaluate the performance indices of prototype. First of all, the pulsating blood pump driven by direct-current electromagnetism was designed with both the drive method of the reciprocating rectilinear motion of a magnet implemented by utilizing solenoids with direct current and the structure of compensation solenoid within uniform magnetic field which was designed through numerical simulation. Next, the value of magnetic driving force created by the blood pump was measured with the prototype and the acceleration test bed when the different current was applied. After that, none heating problem of energized solenoids was detected through calculation and experiment. Finally, the flow performance index of prototype was measured in the conditions that the ranges of preload or afterload were 5-30 mmHg and 50-80 mmHg respectively through the flow test bed. The magnetic driving force created by the prototype possessed the positive linear relation to the current and accorded with the design requirement when the current was 2.7 A. When the current was 2.7 A and the driving frequency was 80 per min, the temperature on the internal surface of energized solenoids contacting with the blood was raised 1 ℃ and stabilized at 27 ℃, the flow of prototype was over 3.0 L·min^-1 except that the gap between preload and afterload was more than 70 mmHg. The pulsating blood pump driven by direct-current electromagnetism reached the clinical requirement of the perfusion of organs isolated and the temporary assistance of extracorporeal circulation, and the design was of significance to the development of extracorporeal circulation blood pump.

Key words： direct-current electromagnetic drive compensation solenoid pulsating blood pump

Received: 08 December 2016

PACS:

R318

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	Articles by authors
	Liu Jingjing
	Ge Bin
	Lu Tong
	Wei Lingxuan
	Zhang Lei
	Dong Jiaoyang

Cite this article:

Liu Jingjing,Ge Bin,Lu Tong, et al. The Design and Test of Pulsating Blood Pump Driven by Direct-Current Electromagnetism for Temporary Assistance[J]. Chinese Journal of Biomedical Engineering, 2018, 37(1): 49-56.

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http://cjbme.csbme.org/EN/10.3969/j.issn.0258-8021. 2018. 01.007 OR http://cjbme.csbme.org/EN/Y2018/V37/I1/49

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