Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure
Patent
1987-07-27
1989-06-06
Chambers, A. Michael
Surgery
Respiratory method or device
Means for supplying respiratory gas under positive pressure
12820524, 417404, 417349, A62B 700, F04B 1700
Patent
active
048361984
ABSTRACT:
A portable ventilating device for ventilating patients in the field. A reciprocating piston divides a cylinder into a pressure chamber and a spring chamber in which a compression spring acts against the piston. Gas pressure applied to the pressure chamber opposes the spring force and reciprocates the piston. As the piston reciprocates ventilating gas is forced out of the piston chamber through a ventilation line equipped with a check valve. Alternative embodiments provide gas pressure assistance to the spring, make use of the gas which powers the device as the ventilating gas, and provide adjustment of the duration for the time periods gas is applied to the cylinder.
REFERENCES:
patent: Re24193 (1947-10-01), Emerson
patent: 2770231 (1956-11-01), Falk
patent: 3225758 (1965-12-01), Morch
patent: 3530872 (1970-09-01), Arp
patent: 3530873 (1970-09-01), Arp
patent: 4076021 (1978-02-01), Thompson
patent: 4141355 (1979-02-01), Apple
patent: 4163911 (1979-08-01), Simes et al.
patent: 4215681 (1980-08-01), Zalkin et al.
patent: 4243029 (1981-01-01), Apple
patent: 4384576 (1983-05-01), Farmer
patent: 4472082 (1984-09-01), Kroling
patent: 4493614 (1985-01-01), Chu et al.
patent: 4587967 (1986-05-01), Chu et al.
Chambers A. Michael
Stein-Gates Medical Equipment, Inc.
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