Device for producing an artificial blood circulation

Details Device for producing an artificial blood circulation Device for producing an artificial blood circulation

1978-09-20

1980-07-15

Freeh, William L.

Pumps

Condition responsive control of pump drive motor

Having timer or delay means

417394, 128214, F04B 4906, F04B 4306

Patent

active

042125898

ABSTRACT:
A pump has a tubular membrane (14) deformed cylindrically by fluid driving pressure to produce an artificial blood circulation. The pump has a feeler (42) which follows the deformation of membrane (14) and operates a switch (102) to close the circuit of an optical signalling device (103) when the deformation of the membrane (14) reaches a predetermined value. A control circuit (104) may be provided for the automatic regulation of the fluid driving pressure acting on the membrane (14) in dependence upon the duration of the closure time of the switch (102). (FIG. 7).

REFERENCES:
patent: 2405734 (1946-03-01), Coe
patent: 2960038 (1960-11-01), Lupfer
patent: 3048121 (1962-08-01), Sheesley
patent: 3194164 (1965-07-01), Fink et al.
patent: 3451347 (1969-06-01), Chimura
patent: 3536423 (1970-10-01), Robinson
patent: 4116589 (1978-09-01), Rishton

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