Surgery – Truss – Pad
Patent
1975-07-07
1977-08-30
Michell, Robert W.
Surgery
Truss
Pad
A61M 1600
Patent
active
040447634
ABSTRACT:
Ventilator having an inhalation phase and an exhalation phase in its operative cycle for use with a source of gas under pressure. A master sequencing cartridge having an inlet adapted to be connected to a source of gas under pressure and an outlet is provided. The cartridge has a valve member movable between open and closed positions to control the flow of gas from the inlet to the outlet. The cartridge is provided with a diaphragm capable of operating under differentials in pressure for causing movement of said valve member. A breathing circuit outlet is provided and tubing is provided for coupling the breathing circuit outlet to the outlet of the master sequencing cartridge. A volume-rate control valve assembly is provided for controlling the movement of the valve member of the master sequencing cartridge between open and closed positions. The volume/rate control valve assembly has an inlet and an outlet with tubing coupling the inlet of the control valve assembly to the outlet of the master sequencing cartridge and tubing connecting the inlet to the diaphragm of the cartridge whereby the timing for moving the valve member between open and closed positions is determined by the rate of flow of gases through the volume/rate control valve assembly.
REFERENCES:
patent: 3434471 (1969-03-01), Liston
patent: 3537448 (1970-11-01), Liston
patent: 3881480 (1975-05-01), Lafourcade
Michell Robert W.
Recla Henry J.
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