Application of electrochemical impedance spectroscopy in sensor systems, devices, and related methods
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United States of America Patent
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Jul 9, 2019
Grant Date -
Mar 15, 2018
app pub date -
Nov 20, 2017
filing date -
Jun 8, 2012
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Abstract
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.
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- MEDTRONIC MINIMED, INC.
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Gautham, Raghavendhar | Los Angeles, US | 41 | 507 |
Li, Yiwen | Arcadia, US | 37 | 274 |
Miller, Michael E | Culver City, US | 291 | 23403 |
Shah, Rajiv | Rancho Palos Verdes, US | 270 | 27019 |
Wang, Jenn-Hann Larry | Northridge, US | 23 | 591 |
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