US 12,144,631 B1
Method and system for electrode impedance measurement
Stephane Bibian, Cleveland Heights, OH (US); and Tatjana Zikov, Cleveland Heights, OH (US)
Assigned to NeuroWave Systems Inc, Cleveland, OH (US)
Filed by NeuroWave Systems Inc., Cleveland, OH (US)
Filed on Apr. 26, 2022, as Appl. No. 17/729,437.
Application 17/729,437 is a continuation of application No. 15/966,039, filed on Apr. 30, 2018, granted, now 11,337,633.
Application 15/966,039 is a continuation of application No. 13/110,455, filed on May 18, 2011, granted, now 9,980,662, issued on May 29, 2018.
Claims priority of provisional application 61/348,134, filed on May 25, 2010.
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 5/291 (2021.01); A61B 5/00 (2006.01); A61B 5/053 (2021.01)
CPC A61B 5/291 (2021.01) [A61B 5/053 (2013.01); A61B 5/7203 (2013.01); A61B 5/7221 (2013.01); A61B 5/4094 (2013.01); A61B 5/4806 (2013.01); A61B 5/4821 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A device for the measurement of electrical impedance in electrodes comprising:
at least three electrodes configured to be attached to a subject, at least one electrode being for electrical grounding, at least one electrode providing a reference signal, and at least one measurement electrode for acquisition of a physiological signal;
a processor for collection of the physiological signal and determining the electrical impedance of each electrode;
a variable current source capable of progressively increasing and decreasing electrical current into the individual electrodes; and
a monitor to display the physiological signal and calculated electrical impedance for each electrode utilized.