Physiological trend monitor
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United States of America Patent
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Jul 24, 2012
Grant Date -
May 26, 2011
app pub date -
Jan 31, 2011
filing date -
Jan 24, 2002
priority date (Note) -
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Abstract
A physiological trend monitor has a sensor signal responsive to multiple wavelengths of light transmitted into a tissue site. The transmitted light is detected after attenuation by pulsatile blood flow within the tissue site. A processor has an input responsive to the sensor signal and a physiological parameter output. Features are extracted from the physiological parameter output. Criteria are applied to the features. An alarm output is generated when the criteria are satisfied.
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