Patent ID: 9211092
Filing Date: 2015-12-15
Classification: A61B,G01M,G01N,G16C

Abstract:
1. A system for determining an end of life of a continuous analyte sensor, the system comprising sensor electronics configured to be operably connected to a continuous analyte sensor, the sensor electronics configured to: evaluate a plurality of risk factors associated with end of life symptoms of a sensor; determine an end of life status of the sensor based on the evaluation of the plurality of risk factors; and provide an output related to the end of life status of the sensor, wherein the plurality of risk factors comprise at least two risk factors selected from the group consisting of a number of days the sensor has been in use a rate of change of sensor sensitivity, end of life noise, oxygen concentration, glucose patterns, error between reference values and sensor values in clinical units, wherein one of the at least two risk factors comprises a rate of change of sensor sensitivity, and wherein the sensor electronics are configured to evaluate a rate of change of sensor sensitivity by evaluating at least one of a direction of rate of change of sensor sensitivity, an amplitude of rate of change of sensor sensitivity, a derivative of rate of change of sensor sensitivity, or a comparison of the rate of change of sensor sensitivity to a priori rate of change sensitivity information.