Nasal septum probe for photoplethysmographic measurements
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United States of America Patent
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Aug 9, 1994
Grant Date -
N/A
app pub date -
Apr 12, 1993
filing date -
Apr 12, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The nasal septum probe of the present invention mounts the optical devices of a photoplethysmographic probe in a housing that clips onto the patient's nasal septum. The septum provides an arterial bed for monitoring purposes and this locus is not subject to significant patient motion or peripheral shutdown of arteriolar blood flow. Furthermore, one embodiment of the invention shows a combination of the photoplethysmographic apparatus with a nasal cannula to provide dual purpose apparatus to minimize the sensor and cable proliferation.
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