System and methods for processing analyte sensor data
First Claim
1. A method for determining a stability of substantially continuous glucose sensor, the method comprising:
- receiving reference data from a reference glucose monitor, including a reference data point;
receiving a data stream from a continuous glucose sensor, including one or more sensor data points;
pairing the reference data point with a substantially time-corresponding sensor data point of said one or more sensor data points, whereby a matched data pair is formed;
determining a sensitivity of the continuous glucose sensor based on the matched data pair;
determining, using electronic circuitry, a level of stability of the continuous glucose sensor, wherein the level of stability is based on a variability of the sensitivity over time; and
prohibiting display of real-time glucose information in response to the level of stability not meeting one or more predetermined criteria.
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Accused Products
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
55 Claims
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1. A method for determining a stability of substantially continuous glucose sensor, the method comprising:
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receiving reference data from a reference glucose monitor, including a reference data point; receiving a data stream from a continuous glucose sensor, including one or more sensor data points; pairing the reference data point with a substantially time-corresponding sensor data point of said one or more sensor data points, whereby a matched data pair is formed; determining a sensitivity of the continuous glucose sensor based on the matched data pair; determining, using electronic circuitry, a level of stability of the continuous glucose sensor, wherein the level of stability is based on a variability of the sensitivity over time; and prohibiting display of real-time glucose information in response to the level of stability not meeting one or more predetermined criteria. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A system for determining a stability of continuous glucose sensor, comprising:
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a reference input module configured to receive reference data from a reference glucose monitor, including a reference data point; a sensor data module operatively connected to a continuous glucose sensor configured to receive a data stream from the continuous glucose sensor, including one or more sensor data points; and electronic circuitry programmed to pair the reference data point with a substantially time-corresponding sensor data point of said one or more sensor data points to form a matched data pair, wherein the electronic circuitry is programmed to determine a sensitivity of the continuous glucose sensor based on the matched data pair., wherein the electronic circuitry is programmed to determine a level of stability of the continuous glucose sensor, wherein the level of stability is based on a variability of the sensitivity over time; and
wherein the electronic circuitry is programmed to prohibit display of real-time glucose information in response to the level of stability not meeting one or more predetermined criteria. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55)
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Specification