Volume 23 Issue 6
Jun.  2008
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ZHAN Zhao, ZHANG Yan, GUI Xing-min. Experiment and design improvement of an axial flow blood pump[J]. Journal of Aerospace Power, 2008, 23(6): 1061-1066.
Citation: ZHAN Zhao, ZHANG Yan, GUI Xing-min. Experiment and design improvement of an axial flow blood pump[J]. Journal of Aerospace Power, 2008, 23(6): 1061-1066.

Experiment and design improvement of an axial flow blood pump

  • Received Date: 2007-05-24
  • Rev Recd Date: 2007-06-25
  • Publish Date: 2008-06-28
  • The numerical investigation and experimental results of the proto-pump LAP-00 show that at design rotational speed of 9000 r/min,the flow rate corresponding to the highest efficiency point is 11 L/min,which is much higher than clinical use(38 L/min),causing the pump to work at off design point in clinic use with a low efficiency.Besides,in the diffuser region,flow separation and recirculation may cause blood stagnation and thrombosis.The improved design for pump LAP-23 decreases the design rotational speed from 9000 r/min to 8000 r/min,thus reduces the high shear stress on blood cells at impeller tip;meanwhile,it decreases the design flow rate to 6 L/min and eliminates flow separation and recirculation in the diffuser region.

     

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