Switch overlay in a piston ventilator

Details Switch overlay in a piston ventilator Switch overlay in a piston ventilator

1997-10-01

2000-09-26

Weiss, John G.

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

200512, A61M 1600, A62B 700, F16K 3102

Patent

active

061230731

ABSTRACT:
A patient ventilator is connected with two stand-by switches wherein activation of both switches is required for stopping the ventilating function. The preferred stand-by switches are in the form of membrane switches in which a conductive dome is positioned and spaced between respective layers having electrical traces thereon cooperating with the dome for defining the switches. The application of manual pressure closes the spaces between the layers and activates both switches.

REFERENCES:
patent: 4626847 (1986-12-01), Zato
patent: 4767943 (1988-08-01), Adler et al.
patent: 4771139 (1988-09-01), DeSmet
patent: 5510584 (1996-04-01), Norris
patent: 5512721 (1996-04-01), Young et al.
patent: 5561278 (1996-10-01), Rutten
patent: 5564560 (1996-10-01), Minelli et al.
patent: 5824978 (1998-10-01), Karasik et al.

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