Centrifugal blood pump apparatus

Details Centrifugal blood pump apparatus Centrifugal blood pump apparatus

2003-12-17

2008-12-30

Deak, Leslie R (Department: 3761)

Surgery

Blood drawn and replaced or treated and returned to body

Constituent removed from blood and remainder returned to body

C600S016000, C422S044000, C417S410100, C417S420000

Reexamination Certificate

active

07470246

ABSTRACT:
A centrifugal blood pump apparatus has a centrifugal pump section including an impeller having a first magnetic material therein and rotating inside the housing to feed a fluid by a centrifugal force generated during a rotation thereof; an impeller rotational torque generation section having a rotor having a magnet for attracting the first magnetic material of the impeller thereto, and a motor for rotating the rotor; and a dynamic pressure groove formed at a portion, of an inner surface of the housing, located at a rotor-disposed side thereof. The centrifugal blood pump apparatus further includes an electromagnet for attracting the impeller in a direction opposite to a direction in which the magnet of the rotor attracts the impeller and helping the impeller levitate.

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