Surgery – Respiratory method or device – Ozone or ion generation
Patent
1976-02-17
1977-06-14
Michell, Robert W.
Surgery
Respiratory method or device
Ozone or ion generation
128214E, 128DIG12, 128DIG13, 222 55, A61M 514
Patent
active
040290948
ABSTRACT:
The flow rate regulation, notably of a rapid perfusion flow rate, is effected by regulating the pressure in the perfusion reservoir by the application of a voltage to a compressor, which increases the flow rate of the liquid in the perfusion tubing by sending pressurized air into the reservoir. The latter is at atmospheric pressure when no voltage is applied to the compressor. The device comprises the combination of a perfusion reservoir and a compressor which causes the pressure in said reservoir to vary. Consequently the flow rate of the perfusion liquid delivered by the latter into the perfusion tubing varies. The compressor is governed by a differential voltage resulting from the comparison by an electronic circuit of the real value with the desired value of the flow rate in the perfusion tubing. This differential voltage is applied to the compressor which then sends compressed air into the perfusion reservoir.
REFERENCES:
patent: 3014481 (1961-12-01), Rumble
patent: 3091239 (1963-05-01), Moeller
patent: 3640276 (1972-02-01), Dancy
patent: 3648694 (1972-03-01), Mogos et al.
patent: 3736930 (1973-06-01), Georgi
Michell Robert W.
Thaler Michael H.
Union Chimique Continentale - U.C.C. Societe Anonyme
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