Pressure adjustment valve for circuits for the manual administra

Details Pressure adjustment valve for circuits for the manual administra Pressure adjustment valve for circuits for the manual administra

1994-04-08

1995-11-07

Chambers, A. Michael

Fluid handling

Systems

Flow path with serial valves and/or closures

1375566, 251 65, 251904, F16K 3700

Patent

active

054640431

ABSTRACT:
The present invention relates to pressure adjustment valves for circuits for the manual administration of gas mixtures in the medical field, such valves including a body that can be interposed on the circuit of a manual respiration unit and which has an intake port and a discharge port. Means are provided in the body of the valve which means can be positioned to vary the useful passage section of the gas stream within the valve in order to modify the resistance created by the adjustment valve to the gas steam.

REFERENCES:
patent: 2514025 (1950-07-01), Bush
patent: 2597952 (1952-05-01), Rosenlund
patent: 3409270 (1968-11-01), Hulsey
patent: 4026284 (1977-05-01), Boehringer
patent: 4143872 (1979-03-01), Havstad et al.
patent: 4183499 (1980-01-01), Swartz et al.
patent: 4654027 (1987-03-01), Dragan et al.
patent: 4750707 (1988-06-01), Johncox et al.
patent: 4918768 (1990-04-01), DeSousa et al.
William W. Mushin et al. "Automatic Ventilation of the Lungs" 1980 Blackwell Scientific Publ., Oxford, p. 735, lines 6-14, figs. 79.3; p. 744, lines 38-41.
Database WPI, Week 9145, Derwent Publ. Ltd., London, GB; AN 91-331499, Zaikin V G "Breathing exercise device . . . " & SU-A-1632430 (Kuib Aviation Inst) 7 Mar. 1991 abstract.

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