Patent ID: 8224412
Filing Date: 2012-07-17
Classification: A47B,G06F,Y10T

Abstract:
1. An oximeter system comprising: an oximeter sensor, comprising: a light emitter configured to direct light at a patient; a light detector mounted to receive light from the patient; and a sensor memory storing a first set of coefficients corresponding to a wavelength of the light emitter and a second set of coefficients corresponding to the wavelength of the light emitter; an oximeter monitor, comprising: a monitor memory storing a first formula and a second formula, wherein the first formula differs from the second formula and wherein at least one of the different formulas comprises a spline function; and a calculation mechanism configured to determine a blood oxygen saturation in the patient, wherein the calculation mechanism selects and utilizes the first set of coefficients in the first formula for a first range of oxygen saturation values and selects and utilizes the second set of coefficients in the second formula for a second range of oxygen saturation values, wherein the first range differs from the second range.