CPC A61B 5/1495 (2013.01) [A61B 5/0004 (2013.01); A61B 5/1468 (2013.01); A61B 5/1473 (2013.01); A61B 5/14503 (2013.01); A61B 5/14532 (2013.01); A61B 5/14546 (2013.01); G01N 27/3274 (2013.01); A61B 2560/0223 (2013.01)] | 30 Claims |
1. A method of determining a glucose level comprising:
positioning a transmitter unit and a glucose sensor on a body of a user, wherein the glucose sensor comprises a plurality of electrodes, including at least one work electrode and a reference electrode, each of which are electrically and communicatively coupled with sensor electronics of the transmitter unit, wherein the glucose sensor is configured to be positioned transcutaneously with a portion of the glucose sensor in contact with a bodily fluid;
applying, using the sensor electronics, a cyclic control signal to the glucose sensor;
measuring, using the sensor electronics, a first response to the cyclic control signal applied to the glucose sensor during a first portion of the cyclic control signal and a second response to the cyclic control signal during a second portion of the cyclic control signal;
determining, using the sensor electronics, an estimated sensor parameter based on the first measured response to the cyclic control signal and the second measured response to the cyclic control signal;
receiving, using the sensor electronics, a sensor data signal from the glucose sensor; and
determining, using the sensor electronics, a calibrated glucose value based on the received sensor data signal and the estimated sensor parameter.
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