Pumps – Motor driven – Fluid motor
Patent
1977-03-01
1979-01-09
Croyle, Carlton R.
Pumps
Motor driven
Fluid motor
417389, 417394, F04B 912, F04B 3502, F04B 4310
Patent
active
041336160
ABSTRACT:
A pneumatic pump adapted primarily as a left ventricular heart assist device includes a flexible bladder with a rigid housing. A pneumatic driver applies rhythmical pulses between the bladder and the housing to repetitively collapse the bladder and establish a pumping action through the bladder, in conjunction with check valves in the inlet and outlet to the bladder. Between the driver and the pump there is provided a pneumatic pulse limiter which includes a flexible diaphragm isolating the driver from the pump. Pulses from the driver are transmitted to the pump only through the flexible diaphragm and the diaphragm is constrained to move only within established limits. Regardless of the magnitude of the pulse from the driver, the maximum pulse applied to the pump cannot exceed that corresponding to the maximum displacement of the diaphragm.
Between successive pulses, the portion of the system between the driver and the flexible diaphragm is depressurized. The rapidity with which depressurization occurs is enhanced by provision of a quick release valve between the driver and the diaphragm.
REFERENCES:
patent: 1788886 (1931-01-01), Nutt
patent: 2452526 (1948-10-01), Osborne
patent: 2735642 (1956-02-01), Norman
patent: 3030892 (1962-04-01), Piccardo
patent: 3134508 (1964-05-01), Bayer et al.
patent: 3282049 (1966-11-01), Benton
patent: 3507583 (1970-04-01), James
patent: 3550162 (1970-12-01), Huffman et al.
patent: 3551076 (1970-12-01), Wilson
patent: 3860968 (1975-01-01), Shapiro
Croyle Carlton R.
Messenger Herbert E.
Neal James L.
Ross Thomas I.
Thermo Electron Corporation
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