Pulsatile pump

Details Pulsatile pump Pulsatile pump

1986-11-25

1988-05-03

Smith, Leonard E.

Pumps

Motor driven

Fluid motor

F04B 4306

Patent

active

047416785

ABSTRACT:
A two-stroke pumping device for developing pulsatile fluid flow includes a housing with an internal resilient flexible element. The flexible element defines a pair of chambers within the housing, including a pumping chamber and a driving chamber. The pumping chamber is connected to a source of the fluid to be pumped and the driving chamber is connected to a pneumatic source adapted to create a pressure differential across the flexible element. The device includes a means responsive to the flexure of the element in one of the strokes to terminate that stroke and begin the other stroke. The flexible element oscillates to generate repetitive ejection and filling strokes. The pneumatic source may be a source of negative or positive pressure.

REFERENCES:
patent: 3039272 (1962-06-01), Frick
patent: 3048121 (1962-08-01), Sheesley
patent: 3070089 (1962-12-01), Dick
patent: 3304881 (1967-02-01), Grise
patent: 3635607 (1972-01-01), Grise
patent: 4346869 (1982-08-01), MacNeill
patent: 4350477 (1982-09-01), Mazal
patent: 4449827 (1984-05-01), Karkiewicz

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