A Study of the Velocity Field in a Modified Design of the Sputnik Left Ventricular Assist Device

Fluid flow in a hydraulic test system was visualized. The test system was used to simulate the flow through an improved modification of the Sputnik LVAD. The experiments were run in three operating modes with different volumetric flow rates and identical pressure heads (80 mm Hg): the nominal mode (...

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Bibliographic Details
Published in:Biomedical engineering 2022-05, Vol.56 (1), p.1-5
Main Authors: Galiastov, A. A., Denisov, M. V., Telyshev, D. V.
Format: Article
Language:English
Subjects:
Biomaterials
Biomedical and Life Sciences
Biomedicine
Cameras
Computer simulation
Design
Engineering
Experiments
Flow simulation
Flow velocity
Fluid flow
Heart
Hydraulic tests
Hydraulics
Pressure head
Test systems
Velocity
Velocity distribution
Ventricle
Ventricular assist devices
Vortices
Citations: Items that this one cites
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Summary:Fluid flow in a hydraulic test system was visualized. The test system was used to simulate the flow through an improved modification of the Sputnik LVAD. The experiments were run in three operating modes with different volumetric flow rates and identical pressure heads (80 mm Hg): the nominal mode (4.5 L/min), a low volumetric flow rate mode (3 L/min), and a high volumetric flow rate mode (6 L/min). The study showed that the fluid flow velocity field in the modified pump was highly stable in all areas under study. Comparison of the original and modified impeller designs showed that the optimization was successful. Further tests should be carried out to check the LVAD safety and hemolysis.
ISSN:0006-3398
1573-8256
DOI:10.1007/s10527-022-10155-w