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 evaluating sensor data from a continuous analyte sensor including receiving first and second sensor data points from the cont
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 evaluating sensor data from a continuous analyte sensor including receiving first and second sensor data points from the continuous analyte sensor and comparing the first and second sensor data points to determine a presence or an absence of aberrant data.
대표청구항▼
1. A method for evaluating sensor data from a continuous glucose sensor, the method comprising: receiving sensor data from the continuous glucose sensor for a first time period;performing signal estimation on the sensor data to provide estimated sensor data;determining, using an electronic device, a
1. A method for evaluating sensor data from a continuous glucose sensor, the method comprising: receiving sensor data from the continuous glucose sensor for a first time period;performing signal estimation on the sensor data to provide estimated sensor data;determining, using an electronic device, a presence of one or more aberrant data values in the sensor data by comparing one or more sensor data values to the estimated sensor data for the first time period; andcommunicating sensor data for the first time period to a user in response to determining a presence of less than a first predetermined number of aberrant data values, or communicating estimated sensor data for the first time period to a user in response to determining a presence of more than a second predetermined number of aberrant data values. 2. The method of claim 1, wherein communicating sensor data comprises transmitting the sensor data to an external device and displaying the sensor data on the external device, and wherein communicating estimated sensor data comprises transmitting the estimated sensor data to the external device and displaying the estimated sensor data on the external device. 3. The method of claim 2, wherein the external device comprises at least one of a computer, a telecommunications device, or an infusion device. 4. The method of claim 1, wherein communicating sensor data comprises displaying a graphical representation associated with the sensor data. 5. The method of claim 4, wherein displaying a graphical representation comprises displaying a directional trend associated with the sensor data. 6. The method of claim 5, wherein displaying a graphical representation further comprises displaying a numeral associated with the sensor data. 7. The method of claim 1, wherein communicating comprises displaying events. 8. The method of claim 1, wherein performing signal estimation comprises filtering the sensor data. 9. The method of claim 1, wherein determining a presence of one or more aberrant data values is performed periodically. 10. The method of claim 1, wherein determining a presence of one or more aberrant data values is performed intermittently. 11. The method of claim 1, further comprising converting at least one of the sensor data or the estimated sensor data. 12. The method of claim 1, wherein the sensor data comprises integrated data. 13. The method of claim 12, wherein the integrated data is provided by a current measurement integrated over a time period. 14. The method of claim 12, wherein the integrated data is provided by a charge counting device. 15. The method of claim 1, wherein the sensor data is generated by the continuous glucose sensor during a first time period and wherein comparing the sensor data and the estimated sensor data is performed continuously for the first time period. 16. The method of claim 1, wherein performing signal estimation comprises filtering the sensor data using at least one of an IIR or FIR filter. 17. The method of claim 1, wherein the sensor data comprises one or more time spaced data points. 18. The method of claim 1, further comprising filtering the sensor data or the estimated sensor data, wherein filtering comprises adaptively filtering the sensor data or the estimated sensor data in response to the one or more aberrant data values. 19. The method of claim 1, wherein the aberrant data values are inaccurate or unreliable. 20. The method of claim 1, wherein the comparing comprises evaluating a residual of the sensor data and the estimated data. 21. The method of claim 1, wherein the compared sensor data comprises uncalibrated sensor data and the compared estimated sensor data comprises uncalibrated estimated sensor data. 22. The method of claim 21, wherein the communicated sensor data comprises calibrated sensor data and the communicated estimated sensor data comprises calibrated estimated sensor data. 23. The method of claim 21, wherein the communicated sensor data comprises uncalibrated sensor data and the communicated estimated sensor data comprises uncalibrated estimated sensor data. 24. The method of claim 1, wherein the compared sensor data comprises calibrated sensor data and the compared estimated sensor data comprises calibrated estimated sensor data. 25. The method of claim 1, wherein communicating the sensor data comprises one or more of transmitting sensor data to an external device or displaying information indicative of the sensor data value or values on a display screen. 26. The method of claim 1, wherein communicating the estimated sensor data comprises one or more of transmitting the estimated sensor data to an external device or displaying information indicative of the estimated sensor data value or values on a display of an electronic device.
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