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Development of a novel shrouded impeller pediatric blood pump

  • Original Article
  • Artificial Heart (Basic)
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Abstract

The aim of this work was to analyze a shrouded impeller pediatric ventricular assist device (SIP-VAD). This device has distinctive design characteristics and parameter optimizations for minimization of recirculation flow and reduction in high-stress regions that cause blood damage. Computational Fluid Dynamics (CFD) simulations were performed to analyze the optimized design. The bench-top prototype of SIP-VAD was manufactured with biocompatible stainless steel. A study on the hydrodynamic and hemodynamic performance of the SIP-VAD was conducted with predictions from CFD and actual experimentation values, and these results were compared. The CFD analysis yielded a pressure range of 29–90 mmHg corresponding to flow rates of 0.5–3 L/min over 9000–11000 rpm. The predicted value of the normalized index of hemolysis (NIH) was 0.0048 g/100 L. The experimental results with the bench-top prototype showed a pressure rise of 30–105 mmHg for the flow speed of 8000–12000 rpm and flow rate of 0.5–3.5 L/min. The maximum difference between CFD and experimental results was 4 mmHg pressure. In addition, the blood test showed the average NIH level of 0.00674 g/100 L. The results show the feasibility of shrouded impeller design of axial-flow pump for manufacturing the prototype for further animal trials.

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Authors and Affiliations

  1. Manufacturing and Automation Research Center, Koc University, Istanbul, 34450, Turkey

    Talha Irfan Khan, Haris Sheh Zad & Ismail Lazoglu

  2. School of Medicine, Koc University, Istanbul, Turkey

    Ozlem Yalcin

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  1. Talha Irfan Khan
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  2. Haris Sheh Zad
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  3. Ismail Lazoglu
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  4. Ozlem Yalcin
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Correspondence to Talha Irfan Khan or Ismail Lazoglu.

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Khan, T.I., Sheh Zad, H., Lazoglu, I. et al. Development of a novel shrouded impeller pediatric blood pump. J Artif Organs 21, 142–149 (2018). https://doi.org/10.1007/s10047-018-1028-3

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  • DOI: https://doi.org/10.1007/s10047-018-1028-3

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