Apparatus and method for non-contacting detection of respiration
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United States of America Patent
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Apr 23, 1996
Grant Date -
N/A
app pub date -
Sep 27, 1994
filing date -
Sep 27, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Apparatus and method for detecting air flow at the mouth and nose of a subject, including a transducer for converting electrical signals into ultrasound waves and vice versa, means for directing the ultrasound waves toward the mouth and nose of the subject and receiving return waves, and a detector to analyze electrical signals converted by the transducer from the return ultrasound waves.
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