Transcutaneous analyte sensor
First Claim
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1. An analyte monitoring system, the system comprising:
- an analyte sensor;
a processor coupled to the sensor and configured to provide sensor data indicative of a concentration of glucose measured by the analyte sensor in a subcutaneous tissue of a host; and
a user interface configured to provide real-time glucose information based on calibrated sensor data to a user, wherein the system is configured to calibrate the analyte sensor using reference data from a reference analyte monitor, wherein the calibration is allowed when an absolute rate of change of a calculated glucose concentration is less than about 4 mg/dL/min, and wherein the calibration is suspended when the absolute rate of change of the calculated glucose concentration is greater than about 4 mg/dL/min.
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Abstract
The present invention relates generally to systems and methods for measuring an analyte in a host. More particularly, the present invention relates to systems and methods for transcutaneous measurement of glucose in a host.
676 Citations
18 Claims
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1. An analyte monitoring system, the system comprising:
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an analyte sensor; a processor coupled to the sensor and configured to provide sensor data indicative of a concentration of glucose measured by the analyte sensor in a subcutaneous tissue of a host; and a user interface configured to provide real-time glucose information based on calibrated sensor data to a user, wherein the system is configured to calibrate the analyte sensor using reference data from a reference analyte monitor, wherein the calibration is allowed when an absolute rate of change of a calculated glucose concentration is less than about 4 mg/dL/min, and wherein the calibration is suspended when the absolute rate of change of the calculated glucose concentration is greater than about 4 mg/dL/min. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of calibrating an analyte monitoring system, the method comprising:
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receiving sensor data from an analyte sensor, wherein the sensor data is indicative of a glucose concentration measured in a subcutaneous tissue of a host; receiving reference data from a reference analyte monitor; calibrating, using an electronic system, the analyte sensor using the reference data, wherein calibrating comprises allowing calibration when an absolute rate of change of a calculated glucose concentration is less than about 4 mg/dL/min and suspending calibration when the absolute rate of change of the calculated concentration is greater than about 4 mg/dL/min; and providing real-time glucose information based on calibrated sensor data. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification