System and methods for processing analyte sensor data
First Claim
1. A method for detecting an instability of a continuous glucose sensor data, the method comprising:
- receiving sensor data generated by a continuous glucose sensor during a first time period, wherein the continuous glucose sensor is configured to measure a glucose concentration in a subcutaneous tissue of a host;
detecting, using an electronic system, an instability of the continuous glucose sensor by determining whether an oxygen deficiency exists; and
providing output responsive to detection of an instability of the continuous glucose sensor.
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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
16 Claims
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1. A method for detecting an instability of a continuous glucose sensor data, the method comprising:
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receiving sensor data generated by a continuous glucose sensor during a first time period, wherein the continuous glucose sensor is configured to measure a glucose concentration in a subcutaneous tissue of a host; detecting, using an electronic system, an instability of the continuous glucose sensor by determining whether an oxygen deficiency exists; and providing output responsive to detection of an instability of the continuous glucose sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system for detecting an instability in a continuous glucose sensor data, the system comprising:
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a continuous glucose sensor configured to produce sensor data during a first time period, wherein the continuous glucose sensor is configured to measure a glucose concentration in a subcutaneous tissue of a host; and a processor module configured to detect an instability of the continuous glucose sensor by determining whether an oxygen deficiency exists; and an output module configured to provide output responsive the detection of an instability of the continuous glucose sensor. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification