Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure
Patent
1979-02-28
1980-11-11
Recla, Henry J.
Surgery
Respiratory method or device
Means for supplying respiratory gas under positive pressure
A61M 1600
Patent
active
042326680
ABSTRACT:
The invention discloses a gas ventilating device where the tidal volume during the inhalation phase of any cycle of patient consumption is constant and fixed; hence, the deliverable volume is independent of the head pressure of the supply source of the gas. Further, the tidal volume can be controlled by altering the differential pressure of the gas in a fixed volume tank which acts as an intermediate storage tank for gas. Control means, using fluidic devices including monostable and bistable devices control the charging and discharging of the fixed volume tank with gas so that the fixed volume of gas can be supplied to the patient.
REFERENCES:
patent: 2760511 (1956-08-01), Greeff
patent: 3831596 (1974-08-01), Cavallo
patent: 3902487 (1975-09-01), Okmian
patent: 4120300 (1978-10-01), Tiep
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