Nasopharyngeal airway with reflectance pulse oximeter sensor
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United States of America Patent
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-
Jul 24, 2001
Grant Date -
N/A
app pub date -
Sep 3, 1999
filing date -
Sep 9, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A combined nasopharyngeal airway and pulse oximeter sensor capable of monitoring the posterior pharynx, posterior soft palate or nasal mucosa is disclosed. The nasopharyngeal airway includes a thickened wall section over approximately one-third of its circumference. Pulse oximeter sensor elements may be embedded in the airway. The pulse oximeter sensor elements may include a light source, which preferably emits light at wavelengths around 660 nm (red) and around 940 nm (near infrared), and a light detector. The pulse oximeter sensor elements may be connected to a pulse oximeter monitor (spectrophotometer) or other external device for analysis.
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