Inlet and outlet devices for rotary blood pumps

Artificial Organs
Xinwei SongDon B Olsen

Abstract

The purposes of inlet and outlet devices for rotary blood pumps, including inducers and diffusers for axial pumps, inlet and exit volutes for centrifugal pumps, and inlet and outlet cannulas, are to guide the blood into the impeller, where the blood is accelerated, and to convert the high kinetic energy into pressure after the impeller discharge, respectively. The designs of the inlet and outlet devices have an important bearing on the pump performance. Their designs are highly dependent on computational fluid dynamics (CFD) analysis, guided by intuition and experience. For inlet devices, the design objectives are to eliminate separated flow, to minimize recirculation, and to equalize the radial components of velocity. For outlet devices, the design goals are to reduce speed, to minimize energy loss, and to avoid flow separation and whirl. CFD analyses indicate the velocity field and pressure distribution. Geometrical optimization of these components has been implemented in order to improve the flow pattern.

References

Feb 1, 1985·In Vitro Cellular & Developmental Biology : Journal of the Tissue Culture Association·B A GilchrestM Yaar

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Citations

Feb 24, 2005·Artificial Organs·Paul S Malchesky
Feb 15, 2011·International Journal of Engineering Science·Samuel J HundMehrdad Massoudi
Oct 28, 2019·ASAIO Journal : a Peer-reviewed Journal of the American Society for Artificial Internal Organs·Jiheum ParkPramod Bonde
Aug 3, 2020·ASAIO Journal : a Peer-reviewed Journal of the American Society for Artificial Internal Organs·Jiheum ParkPramod Bonde

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