Counterbalanced pump

Details Counterbalanced pump Counterbalanced pump

1999-01-07

2000-05-30

Kamm, William E.

Surgery

Cardiac augmentation

A61M 112

Patent

active

060685883

ABSTRACT:
Fluid is periodically pumped through a motor-driven tubular pump at a substantially constant pumping frequency. The pump includes at least one resiliently reciprocate counterbalancing ring joined to a cooperating spring having a fundamental natural frequency corresponding with the pumping frequency and pumping flowrate is varied independently of the pumping frequency.

REFERENCES:
patent: 4389849 (1983-06-01), Gasser et al.
Stolfi et al, "A Magnetically Suspended Linearly Driven Cryogenic Refrigerator," NASA Report N84-15345, Dec. 1983, pp: 263-303.
Teague, "Robert Jarvik: Courage to Test Medicine's Frontier," Design News, Jul. 11, 1994, pp: 60 & 61.

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