Patent ID: 9408567
Filing Date: 2016-08-09
CPC Classification: A61B,A61M,G01N,G01R

Claim Text:
1. A method of performing real-time sensor diagnostics on a subcutaneous or implanted sensor having at least one working electrode, comprising: (a) performing a first electrochemical impedance spectroscopy (EIS) procedure to generate a first set of impedance-related data for the at least one working electrode; (b) after a predetermined time interval, performing a second EIS procedure to generate a second set of impedance-related data for the at least one electrode; and (c) based on the first and second sets of impedance-related data, deteimining whether the sensor is functioning normally, wherein each of the first and second sets of impedance-related data includes data for at least one impedance-related parameter that is substantially glucose-independent, wherein said at least one substantially glucose-independent impedance-related parameter is imaginary impedance, and wherein the imaginary impedance is measured at a frequency of at least 1 kHz.