Patent ID: 9445759
Filing Date: 2016-09-20
CPC Classification: A61B

Claim Text:
1. A blood glucose calibration system comprising: a noninvasive optical sensor configured to illuminate optical radiation and output sensor signals responsive to attenuation of the optical radiation from pulsatile blood flow in a tissue site; a composite parameter generator responsive to the sensor signals so as to calculate a plurality of composite parameters corresponding to blood glucose; a glucose estimator that calculates a plurality of uncalibrated blood glucose estimates according to the plurality of composite parameters; a strip meter that reads test strips exposed to blood drawn from the person so as to generate a plurality of glucose calibrations; and a glucose calibrator that generates a plurality of calibrated blood glucose estimates from the plurality of uncalibrated blood glucose estimates according to the glucose calibrations, wherein the plurality of composite parameters comprise at least one of Gu/X and Gu*X, where “Gu” represents blood glucose and “X” represents a non-glucose blood parameter.