Flow visualization and flow measurement in a cardiac-assist device

Chris D. Bertram; A. H. Nugent

doi:10.1117/12.150505

6 August 1993 Flow visualization and flow measurement in a cardiac-assist device

Chris D. Bertram, A. H. Nugent

Author Affiliations +

Proceedings Volume 2052, Fifth International Conference on Laser Anemometry: Advances and Applications; (1993) https://doi.org/10.1117/12.150505
Event: Laser Anemometry: Advances and Applications: Fifth International Conference, 1993, Koningshof, Veldhoven, Netherlands

Abstract

The Spiral Vortex (SV) ventricular assist device (VAD), a pulsatile blood pump that was designed to minimize both blood stasis and trauma to red cells, has been evaluated using flow visualization and laser Doppler anemometry. The flow visualization provided qualitative and some quantitative data on velocity distribution, shear stress, turbulence, and flow recirculation, during key phases in the pump cycle. Compared to a VAD of conventional design, the SV exhibit less turbulence, less recirculation, and better washout of critical surfaces. The laser anemometer has provided much more detailed data on the velocity distribution in the SV, and also an indication of the extent of cycle-to-cycle variations in the flow.

Citation Download Citation

Chris D. Bertram and A. H. Nugent "Flow visualization and flow measurement in a cardiac-assist device", Proc. SPIE 2052, Fifth International Conference on Laser Anemometry: Advances and Applications, (6 August 1993); https://doi.org/10.1117/12.150505

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