Valve for breathing device

Details Valve for breathing device Valve for breathing device

1985-03-05

1986-11-18

Recla, Henry J.

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

137102, 137908, 1375124, A62B 704

Patent

active

046229647

ABSTRACT:
A breathing valve having a valve chamber connectable to a gas supply and to a breathing device, a gas flow opening for exit of exhaled gases through which atmospheric air may be inducted into the chamber, a valve member in the chamber, a one-way flow opening in the valve member through which gas may flow from the chamber for breathing, and preventing return flow in the opposite direction, a movable valve closure forming part of the valve member movable into and out of sealing engagement with the exit gas flow opening, and a pressure responsive device in the valve member responsive to obstruction of gas flow into the chamber and further responsive to inspiratory effort by a patient to cause the valve member to move away from the exit gas flow opening for permitting air flow through the exit gas flow opening into the chamber for inhalation.

REFERENCES:
patent: 2954793 (1960-10-01), Seeler
patent: 3425409 (1969-02-01), Isaacson et al.
patent: 3435839 (1969-04-01), Edder
patent: 3556122 (1971-01-01), Laerdal
patent: 3978878 (1976-09-01), Rudolph
patent: 3993059 (1976-11-01), Sjostrand
patent: 4192301 (1980-03-01), Hardwick
patent: 4267832 (1981-05-01), Hakkinen

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