Pulse oximeter sensor with piece-wise function

Details Pulse oximeter sensor with piece-wise function Pulse oximeter sensor with piece-wise function

2005-09-30

2011-12-13

Winakur, Eric (Department: 3777)

Surgery

Diagnostic testing

Measuring or detecting nonradioactive constituent of body...

C600S331000

Reexamination Certificate

active

08078246

ABSTRACT:
A memory in a sensor is used to store multiple coefficients for a physiological parameter. In one embodiment, not only are the sensor's specific calibration coefficients stored in a memory in the sensor for the formula to determine oxygen saturation, but multiple sets of coefficients are stored. The multiple sets apply to different ranges of saturation values to provide a better fit to occur by breaking the R to SpO2 relationship up into different pieces, each described by a different function. The different functions can also be according to different formulas for determining oxygen saturation.

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