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Sakuma I, Fukui Y, Dohi T. Study of Secondary Flow in Centrifugal Blood Pumps Using a Flow Visualization Method with a High-Speed Video Camera. Artif Organs. 1996;20(5):541-545doi: 10.1111/j.1525-1594.1996.tb04477.x.
Sakuma, I., Fukui, Y., & Dohi, T. (1996). Study of Secondary Flow in Centrifugal Blood Pumps Using a Flow Visualization Method with a High-Speed Video Camera. Artificial organs, 20(5), 541-545. https://doi.org/10.1111/j.1525-1594.1996.tb04477.x
Sakuma, Ichiro, et al. "Study of Secondary Flow in Centrifugal Blood Pumps Using a Flow Visualization Method with a High-Speed Video Camera." Artificial organs vol. 20,5 (1996): 541-545. doi: https://doi.org/10.1111/j.1525-1594.1996.tb04477.x
Sakuma I, Fukui Y, Dohi T. Study of Secondary Flow in Centrifugal Blood Pumps Using a Flow Visualization Method with a High-Speed Video Camera. Artif Organs. 1996 May;20(5):541-545. doi: 10.1111/j.1525-1594.1996.tb04477.x. PMID: 28868724.
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Artif Organs. 1996 May;20(5):541-545. doi: 10.1111/j.1525-1594.1996.tb04477.x.

Study of Secondary Flow in Centrifugal Blood Pumps Using a Flow Visualization Method with a High-Speed Video Camera.

Artificial organs

Ichiro Sakuma, Yasuhiro Fukui, Takeyoshi Dohi

Affiliations

  1. Department of Applied Electronic Engineering, Faculty of Science and Engineering, Tokyo Denki University SaitamaDepartment of Precision Machinery Engineering, Faculty of Engineering, The University of Tokyo, Tokyo, Japan.

PMID: 28868724 DOI: 10.1111/j.1525-1594.1996.tb04477.x

Abstract

Four pump models with different vane configurations were evaluated with flow visualization techniques using a high-speed video camera. These models also were evaluated through in vivo hemolysis tests using bovine blood. The impeller having the greatest fluid velocity relative to the impeller, the largest velocity variance, and the most irregular local flow patterns in the flow passage caused the most hemolysis. Even if the pumps were operated at almost the same speed (rpm) at the same output, the impeller showing more irregular flow patterns had a statistically greater rate of hemolysis. This fact confirms that the existence of local irregular flow patterns in a centrifugal blood pump deteriorates its hemolytic performance. Thus, to optimize the design of the pump, it is very important to examine the secondary flow patterns in the centrifugal blood pump in detail using flow visualization with a high-speed video camera.

© 1996 International Society for Artificial Organs.

Keywords: Centrifugal blood pump-; Flow visualization-; Hemolysis; Secondary flow-

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