US 9,808,190 B2
Advanced analyte sensor calibration and error detection
Sebastian Bohm, San Diego, CA (US); Daiting Rong, San Diego, CA (US); and Peter C. Simpson, Encinitas, CA (US)
Assigned to DexCom, Inc., San Diego, CA (US)
Filed by DexCom, Inc., San Diego, CA (US)
Filed on Dec. 30, 2013, as Appl. No. 14/144,276.
Application 14/144,276 is a continuation of application No. 13/446,848, filed on Apr. 13, 2012.
Claims priority of provisional application 61/476,145, filed on Apr. 15, 2011.
Prior Publication US 2014/0114153 A1, Apr. 24, 2014
Int. Cl. A61B 5/05 (2006.01); A61B 5/1495 (2006.01); G01N 27/327 (2006.01); A61B 5/145 (2006.01); A61B 5/1486 (2006.01); A61B 5/00 (2006.01); G01D 18/00 (2006.01); G01N 27/02 (2006.01); G01N 33/49 (2006.01); A61B 5/1473 (2006.01)
CPC A61B 5/1495 (2013.01) [A61B 5/1451 (2013.01); A61B 5/1473 (2013.01); A61B 5/1486 (2013.01); A61B 5/14503 (2013.01); A61B 5/14517 (2013.01); A61B 5/14532 (2013.01); A61B 5/14546 (2013.01); A61B 5/7257 (2013.01); A61B 5/7267 (2013.01); G01D 18/00 (2013.01); G01N 27/026 (2013.01); G01N 27/3274 (2013.01); G01N 33/49 (2013.01); A61B 2560/0276 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for identifying failure of an analyte sensor using a sensor system electronically coupled to the analyte sensor, the method comprising:
generating a data stream indicative of an analyte concentration of a host by applying a bias voltage to a first analyte sensor at least partially positioned within tissue of the host;
applying a stimulus signal to the first analyte sensor, wherein the stimulus signal is a time-varying signal;
measuring a signal response to the stimulus signal generated by the first analyte sensor;
determining, by the sensor system, that the signal response satisfies one or more predetermined sensor fault criteria associated with membrane damage; and
initiating an error routine via the sensor system in response to determining that the signal response satisfies the one or more predetermined sensor fault criteria.