System and methods for processing analyte sensor data
First Claim
1. A method for processing sensor data from an analyte sensor, comprising:
- receiving or generating sensor data from an analyte sensor, wherein the sensor data comprises a plurality of sensor data points;
calculating a change in an offset associated with the received plurality of sensor data points over a predetermined time period or a change in a slope associated with the received plurality of sensor data points over a predetermined time period, wherein the offset and the slope are determined from a regression performed on a calibration set comprising at least one matched data pair;
determining, with an electronic device, a level of stability of the analyte sensor based at least in part on a change selected from the group consisting of the change in the offset, the change in the slope, and combinations thereof; and
controlling an output based on the determined level of stability.
1 Assignment
0 Petitions
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.
521 Citations
54 Claims
-
1. A method for processing sensor data from an analyte sensor, comprising:
-
receiving or generating sensor data from an analyte sensor, wherein the sensor data comprises a plurality of sensor data points; calculating a change in an offset associated with the received plurality of sensor data points over a predetermined time period or a change in a slope associated with the received plurality of sensor data points over a predetermined time period, wherein the offset and the slope are determined from a regression performed on a calibration set comprising at least one matched data pair; determining, with an electronic device, a level of stability of the analyte sensor based at least in part on a change selected from the group consisting of the change in the offset, the change in the slope, and combinations thereof; and controlling an output based on the determined level of stability. - 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. A system for processing sensor data from an analyte sensor, comprising:
-
an analyte sensor configured to measure an in vivo analyte concentration; and a data processing device configured to operatively couple to the analyte sensor and configured to generate or receive sensor data points from the analyte sensor, wherein the data processing device is further configured to determine a level of stability of the analyte sensor based at least in part on a change selected from the group consisting of a change in an offset associated with the received sensor data points over a predetermined time period, a change in a slope associated with the received sensor data points over a predetermined time period, and combinations thereof, wherein the offset and the slope are determined from a regression performed on a calibration set comprising at least one matched data pair, and wherein the data processing device is further configured to control an output based on the determined level of stability. - View Dependent Claims (29, 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)
-
Specification