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Structure optimization design of extracorporeal circulation blood transport pump

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Abstract

The roller pump is a distinctive device that delivers fluid in an analogous manner to the peristaltic movement of a biological organism. The pump with the unique mechanism can isolate the liquid from the pump's mechanical components effectively, thereby preventing contamination of the fluid. Therefore, the pump is widely used in extracorporeal circulation machines as artificial hearts for extracorporeal circulation of blood. However, the roller pump exhibits flow pulsation, and in severe cases, that may potentially harm the human body during extracorporeal circulation surgeries. It is necessary to optimize the structure of the roller pump, reduce the degree of flow pulsation of the roller pump and improve the smoothness of the flow transmission. In order to minimize the extent of flow pulsation, the high fidelity fluid–solid interaction (FSI) model of roller pump is established, the accuracy of the model is verified by experiment. Two methods of optimizing the pump structure are proposed. First, the optimization method based on the flow compensation, a new structure model of Y- shaped is established, that reduce the degree of pulsation by superimposing the flow curves with phase difference for flow compensation. Another one is the rapid and efficient optimization method based on the surrogate model, that the surrogate model combines with the optimization algorithm to optimize the structural parameters. The surrogate model is used to replace the FSI model, and the optimal configuration of the internal structural variables is obtained through the Multi-island genetic algorithm (MIGA). And the accuracy of the surrogate model verified by FSI analysis. The results indicate that the two optimization methods have their own advantages in reducing the pump flow pulsation and the pump flow pulsation performance has been improved significantly.

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Acknowledgements

This work was supported by the National Natural-Science Foundation of China (No.52075068).

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Contributions

Fuwen Liu proposed the methodology, constructed the model, and wrote the manuscript;Qing ye Li, Zhuang zhuang Gong, and Yanfeng Zhang performed data organization and data visualization; Xueguan Song provided financial support and overall oversight.

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Correspondence to Xueguan Song.

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The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

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In this work, the basic codes for the evidence theory and the numerical results presented are available from the author on reasonable request.

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Responsible Editor: Zhen Hu

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Liu, F., Li, Q., Gong, Z. et al. Structure optimization design of extracorporeal circulation blood transport pump. Struct Multidisc Optim 67, 37 (2024). https://doi.org/10.1007/s00158-024-03762-6

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  • DOI: https://doi.org/10.1007/s00158-024-03762-6

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