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US 9,398,872 B2Granted
Method and apparatus for providing analyte sensor calibration
AssigneeAbbott Diabetes Care Inc.
InventorsGary Alan Hayter, Geoffrey V. McGarraugh, Andrew H. Naegeli, John Charles Mazza, Benjamin Jay Feldman, Wesley Scott Harper
Life of this patent
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Abstract
Methods and apparatus for providing data processing and control for use in verifying the stability of sensor sensitivity of an analyte sensor.
Claims21
A method of determining a composite sensitivity for an analyte sensor of an electronic analyte monitoring system to compensate for an outlier or erroneous sensitivity, the method comprising:
- positioning an analyte sensor in fluid contact with bodily fluid in a human body;
- generating, with the analyte sensor, first data corresponding to a monitored analyte level in the bodily fluid;
- determining a new sensor sensitivity, using a processor, based on the generated first data when a first difference between a current sensor sensitivity and a prior sensor sensitivity is not within a predetermined range;
- determining, using the processor, if a second difference between the new sensor sensitivity and one of the current sensor sensitivity or the prior sensor sensitivity is within the predetermined range;
- after it is determined that the second difference between the new sensor sensitivity and one of the current sensor sensitivity or the prior sensor sensitivity is within the predetermined range, then determining, using the processor, a composite sensitivity based on the new sensor sensitivity and the one of the current sensor sensitivity or the prior sensor sensitivity that was used in determining that the second difference is within the predetermined range;
- and
- generating, using the processor, second data based on calibrating the first data using the composite sensitivity, the second data corresponding to a monitored analyte level.
4 more elements
An electronic analyte monitoring system capable of determining a composite sensitivity for an analyte sensor to compensate for an outlier or erroneous sensitivity, the system comprising:
- an analyte sensor adapted to contact bodily fluid in a human's body and configured to generate first data corresponding to monitored analyte level in the bodily fluid;
- a data storage unit;
- and
- a processing unit operatively coupled to the data storage unit and the analyte sensor, and configured to:
- determine a new sensor sensitivity based on the generated first data from the analyte sensor when a first difference between a current sensor sensitivity and a prior sensor sensitivity is not within a predetermined range,
- determine if a second difference between the new sensor sensitivity and one of the current sensor sensitivity or the prior sensor sensitivity is within the predetermined range,
- after it is determined that the second difference between the new sensor sensitivity and one of the current sensor sensitivity or the prior sensor sensitivity is within the predetermined range, then determine a composite sensitivity based on the new sensor sensitivity and the one of the current sensor sensitivity or the prior sensor sensitivity that was used to determine that the second difference is within the predetermined range;
- and
- generate second data based on a calibration of the first data using the composite sensitivity, the second data corresponding to a monitored analyte level.
6 more elements
Dependencies are inferred from the claim text.