Magnetically-suspended centrifugal blood pump
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United States of America Patent
Stats
-
May 8, 2001
Grant Date -
N/A
app pub date -
Sep 3, 1999
filing date -
Sep 3, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A magnetically levitated blood pump having a single inlet for accepting blood and tangential volute. The pump includes an impeller formed on a hub that is suspended radially by permanent magnet bearings and axially adjusted via and thrust coil. The hub is rotated by an axial gap permanent magnet DC motor having motor magnets mounted on the hub adjacent to the impeller, a stator formed in the area opposite to the motor magnets, and motor coils formed on the stator. The axial air gap of the motor is formed in the impeller blade path. The motor may have two separate stator members. The current in the thrust coil is controlled by feedback of the impeller axial position measured by sensors. The pump components are compactly configured within a housing.
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Family
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