Cardiology

Axial flow blood pump design may provide better pumping efficiency

Published in Health and Medicine Week, June 26th, 2006

A Lorentz force-type self-bearing motor for an alternative axial flow blood pump design may provide better pumping efficiency.

"A Lorentz force-type self-bearing motor was developed to provide delivery of both motoring torque and levitation force for an alternative axial flow blood pump design with an enclosed impeller. The axial flow pumps currently available introduce electromagnetic coupling from the motor's stator to the impeller by means of permanent magnets (PMs) embedded in the tips of the pump's blades," scientists in Singapore report.

"This design has distinct disadvantages, for example, pumping efficiency and electromagnetic coupling...

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Source: Health and Medicine Week (2006-06-26)

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