Pump for liquid and gaseous fluids, especially blood

Pumps – Motor driven – Motor within rotary pumping member

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Details

417410, 418 61A, F04B 3504, F04C 102

Patent

active

045510733

ABSTRACT:
A rotary pump has a trochoidal member and a trochoidal rotary piston which preferably forms a gap seal with the trochoidal surface of the housing so that damage to blood cells and the like is avoided when the pump is used as an artificial heart or to assist circulation. The rotor is jounaled on an eccentric within a housing which may be the casing of an electric motor for driving the pump. The motor and its speed reducer, preferably planetary gearing, are disposed wholly within the rotor.

REFERENCES:
patent: 2772046 (1956-11-01), Shomphe
patent: 2938468 (1960-05-01), Kececiogln et al.
patent: 3221664 (1965-12-01), Jernaes
patent: 3268156 (1966-08-01), Radziwill et al.
patent: 3384295 (1968-05-01), Hayner et al.
patent: 3913408 (1975-10-01), Moore
patent: 3922121 (1975-11-01), Garfinkle
patent: 4118157 (1978-10-01), Mayer
patent: 4296500 (1981-10-01), Monties et al.
patent: 4400145 (1983-08-01), Hoffman
"Pulsatile flow blood pump based on the principle of the Wankel engine", by N. Verbiski et al., (from the Institute for Biomed. Eng., publ. Aug. 14, 1968, pp. 753-756.
"Einteilung der Rotations-Kolbemaschinen" by Felix Wankel, 1963 Deutsche Verlags Anstalt GmbH, pp. 7 and 22 & 23, plus 2 pages of dwg.

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