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US 10,117,614 B2Granted
Method and system for providing continuous calibration of implantable analyte sensors
AssigneeAbbott Diabetes Care Inc.
InventorBenjamin Jay Feldman
Life of this patent
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Abstract
Method and system for providing continuous calibration of analyte sensors includes calibrating a first sensor, receiving data associated with detected analyte levels from the first sensor, and calibrating a second sensor based on a predetermined scaling factor and data associated with detected analyte levels from the first sensor, is disclosed.
Claims25
A method of analyte sensor calibration, comprising:
- receiving analyte signals from a first analyte sensor positioned in fluid contact with bodily fluid under a skin surface during a first time period;
- receiving analyte signals from a second analyte sensor positioned in fluid contact with bodily fluid under a skin surface during a second time period;
- defining an overlap time period beginning with the positioning of the second analyte sensor and ending with the removal of the first analyte sensor from fluid contact with the bodily fluid;
- determining that the second analyte sensor meets an acceptable stability level during the overlap time period;
- and
- transferring a calibration parameter associated with calibration of the first analyte sensor to calibration of the second analyte sensor, wherein the calibration parameter includes a scaling factor associated with the analyte signals from the first and second analyte sensors, and wherein the scaling factor is determined by performing an autocorrelation function.
3 more elements
A system for analyte sensor calibration, comprising:
- a first analyte sensor for positioning in fluid contact with bodily fluid under a skin surface during a first time period;
- a second analyte sensor for positioning in fluid contact with bodily fluid under a skin surface during a second time period;
- and
- one or more processors configured to process signals generated by the first and second analyte sensors, the one or more processors further configured to:
- define an overlap time period beginning with the positioning of the second analyte sensor and ending with the removal of the first analyte sensor from fluid contact with the bodily fluid;
- determine that the second analyte sensor meets an acceptable stability level during the overlap time period;
- perform an autocorrelation function to determine a scaling factor associated with the signals generated by the first and second analyte sensors;
- and
- transfer a calibration parameter associated with calibration of the first analyte sensor to calibration of the second analyte sensor, wherein the calibration parameter includes the scaling factor.
6 more elements
A method of analyte sensor calibration, comprising:
- receiving analyte signals from a first analyte sensor positioned in fluid contact with bodily fluid under a skin surface during a first time period;
- receiving analyte signals from a second analyte sensor positioned in fluid contact with bodily fluid under a skin surface during a second time period;
- defining an overlap time period beginning with the positioning of the second analyte sensor and ending with the removal of the first analyte sensor from fluid contact with the bodily fluid;
- determining that the second analyte sensor meets an acceptable stability level during the overlap time period;
- and
- transferring a calibration parameter associated with calibration of the first analyte sensor to calibration of the second analyte sensor, wherein the calibration parameter includes a scaling factor associated with the analyte signals from the first and second analyte sensors, and wherein the scaling factor is determined based on an average error between the signals generated by the first and second analyte sensor.
3 more elements
A system for analyte sensor calibration, comprising:
- a first analyte sensor for positioning in fluid contact with bodily fluid under a skin surface during a first time period;
- a second analyte sensor for positioning in fluid contact with bodily fluid under a skin surface during a second time period;
- and
- one or more processors configured to process signals generated by the first and second analyte sensors, the one or more processors further configured to:
- define an overlap time period beginning with the positioning of the second analyte sensor and ending with the removal of the first analyte sensor from fluid contact with the bodily fluid;
- determine that the second analyte sensor meets an acceptable stability level during the overlap time period;
- determine a scaling factor associated with the signals generated by the first and second analyte sensors based on an average error between the signals generated by the first and second analyte sensors;
- and
- transfer a calibration parameter associated with calibration of the first analyte sensor to calibration of the second analyte sensor, wherein the calibration parameter includes the scaling factor.
6 more elements
Dependencies are inferred from the claim text.