Breathing sensor
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United States of America Patent
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-
Nov 7, 1989
Issued Date -
N/A
app pub date -
Mar 27, 1986
filing date -
Aug 31, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Breathing sensor that monitors the inhalation and exhalation of air by sensing the flow of air from a patient's nostrils or by expansion and contraction of the chest, abdomen, side or back. The respiration sensing is changed to an electrical signal that indicates and provides an output signal for monitoring the breathing function. The sensor comprises a housing with a tubular passage containing a ball, a tube connection, a light source, means for detection when the ball interrupts the light source, and an electronic circuit that provides a breathing indicator and output voltage suitable for use in monitoring the patient's breathing.
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