Rotary blood pump
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United States of America Patent
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Feb 21, 2012
Issued Date -
N/A
app pub date -
Dec 4, 2007
filing date -
Sep 18, 2003
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Various “contactless” bearing mechanisms including hydrodynamic and magnetic bearings are provided for a rotary pump as alternatives to mechanical contact bearings. In one embodiment, a pump apparatus includes a pump housing defining a pumping chamber. The housing has a spindle extending into the pumping chamber. A spindle magnet assembly includes first and second magnets disposed within the spindle. The first and second magnets are arranged proximate each other with their respective magnetic vectors opposing each other. The lack of mechanical contact bearings enables longer life pump operation and less damage to working fluids such as blood.
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Family
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