Pulsating pumping unit for a fluid, particularly blood

Details Pulsating pumping unit for a fluid, particularly blood Pulsating pumping unit for a fluid, particularly blood

2005-05-31

2005-05-31

Sykes, Angela D. (Department: 3762)

Surgery

Blood drawn and replaced or treated and returned to body

Constituent removed from blood and remainder returned to body

C604S006100, C604S009000

Reexamination Certificate

active

06899693

ABSTRACT:
A pulsating pumping unit for a fluid, particularly blood, includes means suitable to draw the fluid from an intake connector in order to send it to a outlet connector. The means are contained in an enclosure provided with valves connected to the inlet and the outlet. The valve connected to the outlet has at least one duct passing through the wall of the enclosure, is open at the end that leads into the portion of space. The pumping unit has a flow control element comprising a band of elastic material fixed to the outer wall of the enclosure at the edges, so as to have a blind portion which faces the exit port of the duct and a portion provided with holes which faces the outer wall.

REFERENCES:
patent: 3403696 (1968-10-01), Pynchon
patent: 4662829 (1987-05-01), Nehring
patent: 4673393 (1987-06-01), Suzuki et al.
patent: 4697989 (1987-10-01), Perlov et al.
patent: 4906229 (1990-03-01), Wampler
patent: 5266012 (1993-11-01), Hashimoto et al.
patent: 5413599 (1995-05-01), Imachi et al.

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