System and method of determining whether to recalibrate a blood pressure monitor
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United States of America Patent
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Feb 8, 2005
Grant Date -
Jul 18, 2002
app pub date -
Jan 17, 2002
filing date -
Apr 15, 1994
priority date (Note) -
Expired
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Abstract
A monitor for determining a patient's physiological parameter includes a calibration device that provides a calibration signal indicative of an accurate measurement of the patient's physiological parameter. The monitor also includes a processor, which receives a noninvasive signal from a noninvasive sensor positioned over a blood vessel. The processor uses the calibration signal to calibrate a relationship between the noninvasive signal and a property of the physiological parameter. The processor also determines when to recalibrate the relationship.
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