Shaft driven disposable centrifugal pump
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United States of America Patent
Stats
-
Feb 6, 1990
Grant Date -
N/A
app pub date -
Aug 31, 1988
filing date -
Aug 31, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A disposble centrifugal pump has two parts. One part includes a blood pumping chamber and a driven impeller, while the second part includes an impeller drive to which the impeller is coupled by mechanical shaft couplings. Two seals are provided to limit exposure of the fluid being pumped to possible contaminants. The first seal provides an effective shaft seal around the impeller shaft as it leaves the pumping chamber. The second seal provides an effective seal about all outer portions of the shaft when the shaft is coupled to the impeller drive to limit migration of possible contaminants along the shaft and into the pumping chamber.
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Family
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