09625414 is referenced by 1 patents and cites 113 patents.

A diagnostic Electrochemical Impedance Spectroscopy (EIS) procedure is applied to measure values of impedance-related parameters for one or more sensing electrodes. The parameters may include real impedance, imaginary impedance, impedance magnitude, and/or phase angle. The measured values of the impedance-related parameters are then used in performing sensor diagnostics, calculating a highly-reliable fused sensor glucose value based on signals from a plurality of redundant sensing electrodes, calibrating sensors, detecting interferents within close proximity of one or more sensing electrodes, and testing surface area characteristics of electroplated electrodes. Advantageously, impedance-related parameters can be defined that are substantially glucose-independent over specific ranges of frequencies. An Application Specific Integrated Circuit (ASIC) enables implementation of the EIS-based diagnostics, fusion algorithms, and other processes based on measurement of EIS-based parameters.

Title
Application of electrochemical impedance spectroscopy in sensor systems, devices, and related methods
Application Number
14/933372
Publication Number
9625414 (B2)
Application Date
November 5, 2015
Publication Date
April 18, 2017
Inventor
Rajiv Shah
Rancho Palos Verdes
CA, US
Ning Yang
New York
NY, US
Agent
Pillsbury Winthrop Shaw Pittman
Assignee
MEDTRONIC MINIMED
CA, US
IPC
A61M 5/142
A61M 5/172
A61B 5/053
A61B 5/00
A61B 5/1486
A61M 5/158
A61B 5/1459
G01N 33/66
A61B 5/1473
A61B 5/145
G01R 35/00
G01N 27/02
G01N 27/416
A61B 5/1495
View Original Source