The Effect of Rotor Geometry on the H−Q Curves of the Sputnik Implantable Pediatric Rotary Blood Pump

In this work, the effect of rotor geometry on the H−Q curves of the Sputnik implantable pediatric rotary blood pump was studied. Load sensitivity was calculated for different input angles of the pump impeller and diffuser blades. Hydraulic efficiency and shear stress were determined for each modific...

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Bibliographic Details
Published in:Biomedical engineering 2017-03, Vol.50 (6), p.420-424
Main Authors: Telyshev, D. V., Denisov, M. V., Selishchev, S. V.
Format: Article
Language:English
Subjects:
Angles (geometry)
Biomaterials
Biomedical Engineering and Bioengineering
Blades
Blood pumps
Curves
Curves (geometry)
Design modifications
Diffusers
Engineering
Heart failure
Heart transplantation
Mechanical stimuli
Pediatrics
Prostheses and implants
Pumps
Rotors
Satellites (Spacecraft)
Sensitivity
Shear stress
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Summary:In this work, the effect of rotor geometry on the H−Q curves of the Sputnik implantable pediatric rotary blood pump was studied. Load sensitivity was calculated for different input angles of the pump impeller and diffuser blades. Hydraulic efficiency and shear stress were determined for each modification of the pump design. The study showed that variation of the input angles of the impeller and diffuser blades had a significant effect on the load sensitivity of the pump. An almost twofold increase in the load sensitivity was achieved (from 0.03420 to 0.05957 L·min −1 ·mm Hg −1 ).
ISSN:0006-3398
1573-8256
DOI:10.1007/s10527-017-9669-8