ADVANCED ANALYTE SENSOR CALIBRATION AND ERROR DETECTION
First Claim
1. A method for determining a property of a continuous analyte sensor, the method comprising:
- applying a bias voltage to an analyte sensor;
applying a voltage step above the bias voltage to the analyte sensor;
measuring, using sensor electronics, a signal response of the voltage step;
determining, using the sensor electronics, a peak current of the signal response; and
determining, using the sensor electronics, a property of the sensor by correlating the peak current to a predetermined relationship.
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Accused Products
Abstract
Systems and methods for processing sensor data and self-calibration are provided. In some embodiments, systems and methods are provided which are capable of calibrating a continuous analyte sensor based on an initial sensitivity, and then continuously performing self-calibration without using, or with reduced use of, reference measurements. In certain embodiments, a sensitivity of the analyte sensor is determined by applying an estimative algorithm that is a function of certain parameters. Also described herein are systems and methods for determining a property of an analyte sensor using a stimulus signal. The sensor property can be used to compensate sensor data for sensitivity drift, or determine another property associated with the sensor, such as temperature, sensor membrane damage, moisture ingress in sensor electronics, and scaling factors.
75 Citations
21 Claims
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1. A method for determining a property of a continuous analyte sensor, the method comprising:
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applying a bias voltage to an analyte sensor; applying a voltage step above the bias voltage to the analyte sensor; measuring, using sensor electronics, a signal response of the voltage step; determining, using the sensor electronics, a peak current of the signal response; and determining, using the sensor electronics, a property of the sensor by correlating the peak current to a predetermined relationship. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for determining a property of a continuous analyte sensor, the system comprising a sensor electronics configured to be operably connected to a continuous analyte sensor, the sensor electronics configured to:
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apply a bias voltage to an analyte sensor; apply a voltage step above the bias voltage to the analyte sensor; measure a signal response of the voltage step; determine a peak current of the signal response; and determine a property of the sensor by correlating the peak current to a predetermined relationship. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification