System and methods for processing analyte sensor data
First Claim
1. A method for processing sensor data from a continuous glucose sensor, the method comprising:
- receiving sensor data from a continuous glucose sensor, wherein the sensor data comprises one or more sensor data points;
receiving reference data from a reference glucose monitor that is independent from the continuous glucose sensor, wherein the reference data comprises one or more reference data points;
forming one or more matched data pairs, wherein the one or more matched data pairs are formed by matching at least one reference data point to at least one substantially time corresponding sensor data point; and
determining using processing circuitry a stability of the continuous glucose sensor at least in part by evaluating at least two matched data pairs.
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Abstract
Systems and methods for processing sensor analyte data, including initiating calibration, updating calibration, evaluating clinical acceptability of reference and sensor analyte data, and evaluating the quality of sensor calibration. During initial calibration, the analyte sensor data is evaluated over a period of time to determine stability of the sensor. The sensor may be calibrated using a calibration set of one or more matched sensor and reference analyte data pairs. The calibration may be updated after evaluating the calibration set for best calibration based on inclusion criteria with newly received reference analyte data. Fail-safe mechanisms are provided based on clinical acceptability of reference and analyte data and quality of sensor calibration. Algorithms provide for optimized prospective and retrospective analysis of estimated blood analyte data from an analyte sensor.
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Citations
28 Claims
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1. A method for processing sensor data from a continuous glucose sensor, the method comprising:
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receiving sensor data from a continuous glucose sensor, wherein the sensor data comprises one or more sensor data points; receiving reference data from a reference glucose monitor that is independent from the continuous glucose sensor, wherein the reference data comprises one or more reference data points; forming one or more matched data pairs, wherein the one or more matched data pairs are formed by matching at least one reference data point to at least one substantially time corresponding sensor data point; and determining using processing circuitry a stability of the continuous glucose sensor at least in part by evaluating at least two matched data pairs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A continuous glucose sensor system, comprising:
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a continuous glucose sensor configured to continuously measure a concentration of glucose in a host; and a computer system configured to receive sensor data associated with the concentration of glucose in the host and configured to process the sensor data, wherein the computer system is configured to provide at least one matched data pair by matching reference glucose data from a reference glucose monitor that is independent from the continuous glucose sensor to substantially time corresponding sensor data, and wherein the computer system is configured to determine a stability of the continuous glucose sensor at least in part by evaluating at least two matched data pairs. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification