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New Mechanism to Reduce the Size of the Monopivot Magnetic Suspension Blood Pump: Direct Drive Mechanism
Author(s) -
Yamane Takashi,
Nishida Masahiro,
Kijima Toshihiko,
Maekawa Jun
Publication year - 1997
Publication title -
artificial organs
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.684
H-Index - 76
eISSN - 1525-1594
pISSN - 0160-564X
DOI - 10.1111/j.1525-1594.1997.tb03710.x
Subject(s) - impeller , centrifugal pump , suspension (topology) , mechanism (biology) , materials science , electromagnetic suspension , stator , hemolysis , volumetric flow rate , mechanics , mechanical engineering , engineering , physics , magnet , medicine , mathematics , quantum mechanics , homotopy , pure mathematics , immunology
Size reduction of the monopivot magnetic suspension blood pump has been achieved by reducing the size of the magnetic suspension and employing a direct drive mechanism in place of a brushless DC motor and a magnetic coupling. The flow has also been improved using a closed hollow impeller to remove flow obstruction at the inlet and using radial straight vanes to reduce the impeller speed by 30%. Hemolysis testing was conducted for the new models. Results showed that model DD1 presented only a slightly higher level of hemolysis than a regular extracorporeal centrifugal pump.