Patent ID: 11857344
Assignee: BIOLINQ INCORPORATED
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A microneedle array-based analyte monitoring device, comprising:
a working electrode comprising an electrochemical sensing coating configured to generate a sensing current indicative of a redox reaction of an analyte at a surface of the working electrode, the working electrode positioned on a surface of a distal portion of a first microneedle in a microneedle array;
a reference electrode positioned on a surface of a distal portion of a second microneedle in the microneedle array;
a counter electrode positioned on a surface of a distal portion of a third microneedle in the microneedle array;
an analog front end configured to maintain a fixed potential relationship between the working electrode and the reference electrode and to allow potential of the counter electrode to swing to sustain the redox reaction at the working electrode;
a controller in communication with the analog front end and configured to:
monitor a counter electrode voltage at the counter electrode;
identify a characteristic of the counter electrode voltage that meets or exceeds a threshold value;
determine, in response to identifying the characteristic of the counter electrode voltage that exceeds the threshold value, a correlation between the counter electrode voltage and the sensing current; and
apply, based on the characteristic of the counter electrode voltage and the correlation, a mode of operation to the microneedle array-based analyte monitoring device.