System and methods for processing analyte sensor data
First Claim
1. A method for determining a stability of a continuous glucose sensor, the method comprising:
- receiving a data stream from a continuous glucose sensor, including a signal associated with a glucose concentration in a host and a signal associated with interfering species in the host; and
determining a level of stability of the continuous glucose sensor by evaluating the signal associated with interfering species in the host to detect a baseline drift or a baseline offset using a processor module, wherein the determining a level of stability is performed in real-time.
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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.
624 Citations
30 Claims
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1. A method for determining a stability of a continuous glucose sensor, the method comprising:
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receiving a data stream from a continuous glucose sensor, including a signal associated with a glucose concentration in a host and a signal associated with interfering species in the host; and determining a level of stability of the continuous glucose sensor by evaluating the signal associated with interfering species in the host to detect a baseline drift or a baseline offset using a processor module, wherein the determining a level of stability is performed in real-time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A system for determining a stability of a continuous glucose sensor, comprising:
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a sensor data module operatively connected to a continuous glucose sensor and configured to receive a data stream comprising a signal associated with a glucose concentration in a host and a signal associated with interfering species in the host; and a processor module programmed to determine a level of stability of the continuous glucose sensor in real-time by evaluating the signal associated with interfering species in the host to detect a baseline drift or a baseline offset. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification