Shaft driven disposable centrifugal pump

Details Shaft driven disposable centrifugal pump Shaft driven disposable centrifugal pump

1988-08-31

1990-02-06

Smith, Leonard E.

Pumps

Motor driven

Including means for facilitating assembly or disassembly of...

4174239, 41742311, 41742314, 415230, 415900, F04D 2908, F04D 2960

Patent

active

048985180

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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