Affiliations: School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai, China
Correspondence:
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Corresponding author: Bin Ge, School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, No.516 Jungong Road, Yangpu District, Shanghai, China. Tel.: +86 021 55271290; E-mail: gb13992@hotmail.com.
Abstract: BACKGROUND: Extracorporeal membrane oxygenation (ECMO) has developed rapidly and becomes a significant treatment for emergency. Current blood pumps for ECMO have different disadvantages. OBJECTIVE: To design a pulsatile DC electromagnetic blood pump for ECMO. METHODS: The design is presented with a driving principle which the rectilinear reciprocation of a magnet inside energized solenoids is implemented, and with a structure of solenoids with compensation coils. Furthermore, a prototype was constructed and the performance indexes of it were measured with the experimental evaluations, where the acceleration experiment was performed without any loads, and the flows were measured in the ranges of preload and afterload are 5 to 30 mmHg and 50 to 80 mmHg respectively when the frequency of the motion is 80 beats per minute. RESULTS: The electromagnetic force is greater than 1.4 N when the DC reaches 2.7 A and the flow of the prototype is greater than 3.0 L/min except the differences between the preload and the afterload are greater than or equal to 70 mmHg. CONCLUSIONS: The design of the blood pump for ECMO meets the theoretical and clinical requirements.
Keywords: Pulsatile blood pump, DC electromagnet, solenoid with compensation coils
