ABSTRACT OF THE DISCLOSURE: A breathing valve having a valve chamberconnectable to a gas supply and to a breathing device,a gas flow opening for exit of exhaled gases throughwhich atmospheric air may be inducted into the chamber,a valve member in the chamber, a one-way flow openingin the valve member through which gas may flow from thechamber for breathing, and preventing return flow inthe opposite direction, a movable valve closure formingpart of the valve member movable into and out of sealingengagement with the exit gas flow opening, and a pressureresponsive device in the valve member responsive toobstruction of gas flow into the chamber and furtherresponsive to inspiratory effort by a patient to causethe valve member to move away from the exit gas flowopening for permitting air flow through the exit gasflow opening into the chamber for inhalation.

Title
Soupape pour dispositif daide a la respiration
Valve for breathing device
Application Number
437254
Publication Number
1193169
Application Date
September 21, 1983
Publication Date
September 10, 1985
Inventor
Flynn Stephen D
Agent
ROLSTON GEORGE A
Assignee
O Two Systems International
IPC
A61M 16/00
A61M 16/20
A62B 09/02
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