Method and apparatus for using an inhalation sensor for monitoring and for inhalation therapy
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United States of America Patent
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-
Oct 1, 1991
Issued Date -
N/A
app pub date -
Oct 25, 1988
filing date -
Feb 20, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An inhalation sensor which uses a non-metallic diaphragm that is metallized on one side, pre-stressed, and used as one plate of a variable capacitance pressure tranducer to sense the inhalation and exhalation of air from the nostrils and/or mouth of a patient. The inhalation sensor is used for inhalation therapy by triggering a prescribed dose of therapeutic gas when inhalation takes place. The inhalation sensor can also be used as a monitor to detect apnea (the absence of breathing).
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