Water absorbing trap to protect an infrared exhaled carbon dioxi

Details Water absorbing trap to protect an infrared exhaled carbon dioxi Water absorbing trap to protect an infrared exhaled carbon dioxi

1983-03-07

1984-05-08

Recla, Henry J.

Surgery

Truss

Pad

128719, 12820718, 12820512, 137172, 137199, 55387, A61B 508, A61M 1600

Patent

active

044468695

ABSTRACT:
A water trap is connected to a cannula which has a substantially constant internal diameter and which communicates moisture laden patient exhalations therethrough to an analyzer. The trap includes a body having a recess adapted for receiving a water absorbing compound which has an aperture therethrough for communicating dried exhalations to the analyzer. A second recess in the body is adapted for receiving another water adsorbing compound which similarly has an aperture of same diameter. When the first compound becomes substantially saturated and thereby permits moisture laden exhalations to pass therethrough, then the second compound absorbs those exhalations and swells for thereby closing its aperture and preventing communication of moisture laden exhalations to the analyzer.

REFERENCES:
patent: 2326925 (1943-08-01), Bortini
patent: 2702089 (1955-02-01), Engelder
patent: 2823693 (1958-02-01), Balter
patent: 2823694 (1958-02-01), Champion
patent: 3000191 (1961-09-01), Stark
patent: 4197858 (1980-04-01), Osborn

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