System and methods for processing analyte sensor data
First Claim
1. A method for initializing a substantially continuous analyte sensor, the method comprising:
- receiving a data stream from an analyte sensor, including one or more sensor data points;
receiving reference data from a reference analyte monitor, including two or more reference data points;
providing at least two matched data pairs by matching reference analyte data to substantially time corresponding sensor data;
forming a calibration set including said at least two matching data pairs; and
determining a stability of the continuous analyte sensor.
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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
66 Claims
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1. A method for initializing a substantially continuous analyte sensor, the method comprising:
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receiving a data stream from an analyte sensor, including one or more sensor data points;
receiving reference data from a reference analyte monitor, including two or more reference data points;
providing at least two matched data pairs by matching reference analyte data to substantially time corresponding sensor data;
forming a calibration set including said at least two matching data pairs; and
determining a stability of the continuous analyte sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A system for initializing a continuous analyte sensor, comprising:
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a sensor data module operatively connected to a continuous analyte sensor that receives a data stream comprising a plurality of time spaced sensor data points from the analyte sensor;
a reference input module adapted to obtain reference data from a reference analyte monitor, including one or more reference data points;
a processor module that forms one or more matched data pairs by matching reference data to substantially time corresponding sensor data and subsequently forms a calibration set including said one or more matched data pairs; and
a start-up module associated with said processor module programmed to determine the stability of the continuous analyte sensor. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
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42. A computer system for initializing a continuous analyte sensor, the computer system comprising:
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a sensor data receiving module that receives sensor data from the substantially continuous analyte sensor via a receiver, including one or more sensor data points;
a reference data receiving module that receives reference data from a reference analyte monitor, including one or more reference data points;
a data matching module that forms one or more matched data pairs by matching reference data to substantially time corresponding sensor data;
a calibration set module that forms a calibration set including at least one matched data pair; and
a stability determination module that determines the stability of the continuous analyte sensor. - View Dependent Claims (43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61)
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62. A method for initializing a substantially continuous analyte sensor, the method comprising:
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receiving sensor data from a substantially continuous analyte sensor, including one or more sensor data points;
receiving reference data from a reference analyte monitor, including one or more reference data points;
forming one or more matched data pairs by matching reference data to substantially time corresponding sensor data;
forming a calibration set including at least one matched data pair;
determining stability of continuous analyte sensor; and
outputting information reflective of said sensor data once a predetermined level of stability has been determined.
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63. A system for initializing a continuous analyte sensor, comprising:
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a sensor data module operatively linked to a continuous analyte sensor and configured to receive one or more sensor data points from said sensor;
a reference input module adapted to obtain one or more reference data points;
and a processor module associated with the sensor data module and the input module and programmed to match reference data points with time-matched sensor data points to form a calibration set comprising at least one matched data pair; and
a start-up module associated with said processor module programmed to determine the stability of the continuous analyte sensor and output information reflective of said sensor data once a predetermined level of stability has been determined.
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64. A computer system for initializing a continuous analyte sensor, the system comprising:
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a sensor data receiving module that receives sensor data including one or more sensor data points from the substantially continuous analyte sensor via a receiver;
a reference data receiving module for receiving reference data from a reference analyte monitor, including one or more reference data points;
a data matching module for forming one or more matched data pairs by matching reference data to substantially time corresponding sensor data;
a calibration set module for forming a calibration set including at least one matched data pair;
a stability determination module for evaluating the stability of the continuous analyte sensor; and
an interface control module that outputs information reflective of said sensor data once a predetermined level of stability has been determined.
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65. A method for initializing a glucose sensor, the method comprising:
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receiving sensor data from the glucose sensor, including one or more sensor data points;
receiving reference data from a reference glucose monitor, including one or more reference data points;
forming one or more matched data pairs by matching reference data to substantially time corresponding sensor data;
determining whether the glucose sensor has reached a predetermined level of stability.
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66. A system for initializing a continuous analyte sensor, comprising:
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a sensor data module operatively linked to a continuous analyte sensor and configured to receive one or more sensor data points from said sensor;
a reference input module adapted to obtain one or more reference data points;
and a processor module associated with the sensor data module and the input module and programmed to match reference data points with time-matched sensor data points to form a calibration set comprising at least one matched data pair; and
a stability module associated with said processor module programmed to determine the stability of the continuous analyte sensor.
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Specification