Pumps – Motor driven – Electric or magnetic motor
Patent
1996-07-03
1997-11-04
Thorpe, Timothy
Pumps
Motor driven
Electric or magnetic motor
415900, 41742312, F04B 1703
Patent
active
056832311
ABSTRACT:
A blood pump used for heart-lung machines comprising an impeller, a casing having a suction inlet and a delivery outlet and rotatably encasing the impeller, a magnetic driver disposed outside the casing, and a magnetic attraction force adjuster. The impeller has a rotationally symmetric shape, such as a conical shape, is equipped with vanes having a pumping function on the side surface thereof and is also equipped with magnets, such as permanent magnets. The magnetic driver for rotating the impeller in cooperation with the magnets comprises a magnet assembly magnetically connected to the magnets and a rotation driver for rotating the magnet assembly. The magnetic attraction force adjuster adjusts the magnetic attraction force generated between the magnets and the magnet assembly by adjusting the gap between the magnets and the magnet assembly or by adjusting the exciting current of electromagnets when electromagnets are used for the magnet assembly. One of the pivot and pivot bearing for supporting the rotation shaft of the impeller is made of ceramics and the other is made of synthetic resin.
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Makinouchi Kenzo
Nakazawa Tadashi
Nose Yukihiko
Takami Yoshiyuki
Korytnyk Peter G.
Kyocera Corporation
Thorpe Timothy
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