System and methods for processing analyte sensor data
First Claim
1. A method for processing at least one of reference glucose data or sensor glucose data, the method comprising:
- receiving sensor data from a continuous glucose sensor, during a time period of continuous glucose sensing of a host, the sensor data comprising one or more sensor data points;
receiving reference data from a reference glucose monitor, during the time period of continuous glucose sensing of the host, the reference data comprising one or more reference data points;
forming, using a processor module, a matched data pair by matching at least one sensor data point to at least one substantially time corresponding reference data point;
determining, during the time period of continuous glucose sensing of the host, using the processor module, a zone out of a plurality of predetermined zones into which the matched data pair falls based on a deviation of the sensor data and the reference data of the matched data pair and a user'"'"'s blood glucose concentration value as indicated by at least one of the reference data and the sensor data, wherein the plurality of zones comprises at least one zone of a first type and at least one zone of a second type; and
processing, using the processor module, at least one of the one or more sensor data points and the one or more reference data points responsive to the type of zone in which the matched data pair is determined to fall.
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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
34 Claims
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1. A method for processing at least one of reference glucose data or sensor glucose data, the method comprising:
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receiving sensor data from a continuous glucose sensor, during a time period of continuous glucose sensing of a host, the sensor data comprising one or more sensor data points; receiving reference data from a reference glucose monitor, during the time period of continuous glucose sensing of the host, the reference data comprising one or more reference data points; forming, using a processor module, a matched data pair by matching at least one sensor data point to at least one substantially time corresponding reference data point; determining, during the time period of continuous glucose sensing of the host, using the processor module, a zone out of a plurality of predetermined zones into which the matched data pair falls based on a deviation of the sensor data and the reference data of the matched data pair and a user'"'"'s blood glucose concentration value as indicated by at least one of the reference data and the sensor data, wherein the plurality of zones comprises at least one zone of a first type and at least one zone of a second type; and processing, using the processor module, at least one of the one or more sensor data points and the one or more reference data points responsive to the type of zone in which the matched data pair is determined to fall. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A system for processing at least one of reference glucose data or sensor glucose data, the system comprising:
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a sensor data module configured to receive sensor data from a continuous glucose sensor during a time period of continuous glucose sensing of a host, the sensor data comprising one or more sensor data points; a reference input module configured to receive reference data from a reference glucose monitor during the time period of continuous glucose sensing of the host, the reference data comprising one or more reference data points; and a processor module configured, during the time period of continuous glucose sensing of the host to (i) form a matched data pair by matching at least one sensor data point of the sensor data to at least one substantially time corresponding reference data point of the reference data, (ii) determine a zone out of a plurality of predetermined zones into which the matched data pair falls based on a deviation of the sensor data and reference data of the matched data pair and a user'"'"'s blood glucose concentration value as indicated by at least one of the reference data and the sensor data, wherein the plurality of zones comprises at least one zone of a first type and at least one zone of a second type, and (iii) process at least one of the one or more sensor data points or the one or more reference data points responsive to the type of zone into which matched data pair is determined to fall. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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Specification