US 12,138,050 B2
Electrochemical sensor including multiple work electrodes and common reference electrode
Daniel Hahn, Orange, CA (US); Mohsen Askarinya, Chandler, AZ (US); James K. Carney, Roseville, MN (US); Patrick W. Kinzie, Glendale, AZ (US); Jennifer Lorenz Marckmann, Scottsdale, AZ (US); Randal C. Schulhauser, Phoenix, AZ (US); Santhisagar Vaddiraju, Plymouth, MN (US); Akhil Srinivasan, Woodland Hills, CA (US); David Probst, Chandler, AZ (US); and Alejo Chavez Gaxiola, Costa Mesa, CA (US)
Assigned to Medtronic, Inc., Minneapolis, MN (US)
Filed by Medtronic, Inc., Minneapolis, MN (US)
Filed on Sep. 1, 2023, as Appl. No. 18/460,271.
Application 18/460,271 is a continuation of application No. 16/116,346, filed on Aug. 29, 2018, granted, now 11,744,492.
Prior Publication US 2023/0404446 A1, Dec. 21, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 5/1468 (2006.01); A61B 5/053 (2021.01); A61B 5/145 (2006.01); A61B 5/1486 (2006.01); G01N 27/30 (2006.01); G01N 27/327 (2006.01)
CPC A61B 5/1468 (2013.01) [A61B 5/053 (2013.01); A61B 5/14532 (2013.01); A61B 5/14546 (2013.01); A61B 5/1486 (2013.01); G01N 27/301 (2013.01); G01N 27/3271 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A biocompatible medical device comprising:
an electrochemical sensor comprising:
a single common counter electrode;
a plurality of respective work electrodes electrically coupled to the common counter electrode, wherein each respective work electrode of the plurality of respective work electrodes comprises a respective reagent substrate configured to react with a respective analyte to produce a respective signal indicative of a concentration of the respective analyte;
processing circuitry operatively coupled to the electrochemical sensor, wherein the processing circuitry is configured to:
receive from the electrochemical sensor a plurality of signals from the plurality of respective work electrodes;
select a respective work electrode of the plurality of respective work electrodes;
selectively power a different respective work electrode of the plurality of respective work electrodes;
based on selectively powering the different respective work electrode, receive a respective signal of the plurality of signals, wherein the respective signal corresponds to the respective selected work electrode of the plurality of respective work electrodes; and
determine, based on the received respective signal, the concentration of a respective analyte associated with the respective selected work electrode.