Surgically implantable pump arrangement and method for pumping body fluids
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United States of America Patent
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Oct 14, 1997
Issued Date -
N/A
app pub date -
Feb 25, 1994
filing date -
Aug 6, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In one embodiment described in the specification, a surgically implantable reciprocating pump employs a check valve as the piston, which is driven by a permanent magnet linear electric motor to assist either side of the natural heart. The pump is implanted in the aorta or pulmonary artery using vascular attachment cuffs such as flexible cuffs for suturing at each end with the pump output directly in line with the artery. The pump is powered by surgically implanted rechargeable batteries. In another embodiment, pairs of pumps are provided to replace or assist the natural heart or to provide temporary blood flow throughout the body, for example, during operations to correct problems with the natural heart.
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