Carbon dioxide indicator device
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United States of America Patent
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-
Mar 1, 1988
Grant Date -
N/A
app pub date -
Aug 13, 1986
filing date -
Aug 13, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A rapid response device for the detection of carbon dioxide in a concentration of more than 2% in a gas mixture comprising an indicator component mounted within an enclosure with a transparent window, the component comprising a carrier having fixedly attached thereto an indicating element formed from an aqueous solution of a colorless Lewis base, a hygroscropic, high boiling, transparent, colorless, water-miscible liquid and a pH-sensitive indicator, the enclosure being sealed for storage under a carbon-dioxide free atmosphere; and a method for determining the correct placement of an endotracheal catheter using the device.
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