Audio-capnometry apparatus
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United States of America Patent
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-
Mar 17, 1992
Grant Date -
N/A
app pub date -
Jul 10, 1991
filing date -
Jul 10, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus for use in audio monitoring of carbon dioxide concentration in general, and as an aid in blind nasal intubation, as well as other procedures requiring the monitoring of carbon dioxide in which carbon dioxide is measured by a carbon dioxide monitor, the carbon dioxide monitors output is used as the control voltage of a voltage controlled oscillator, and the output of the voltage controlled oscillator is amplified, delivered to a speaker, and thereby produces an audible tone whose pitch is directly proportional to the level of carbon dioxide being monitored.
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