Patent ID: 8843321
Filing Date: 2014-09-23
Classification: A61B

Abstract:
1. A method for estimating a glucose level of a person having diabetes, the method comprising: receiving into a computing device a plurality of measured glucose results from a glucose sensor coupled to the person; using the computing device to analyze the plurality of measured glucose results with a probability analysis tool configured to determine a probability of glucose sensor accuracy P using the computing device to estimate the glucose level of the person with a recursive filter configured to estimate the glucose level based on the plurality of measured glucose results weighted with the probability of glucose sensor accuracy P wherein the probability analysis tool comprises a hidden Markov model, wherein: wherein probability of the hidden Markov model transitioning from the first state S where CG is a most-recent measured glucose result, ΔCG is a most-recent change in the plurality of measured glucose results, and α 1 , α 2 , α 3 and α 4 are constants related to characteristics of the glucose sensor.