Patent ID: 11950904
Assignee: ASCENSIA DIABETES CARE HOLDINGS AG
Field: Measurement (Instruments)
Classification: CPC A  G | IPC A  G

Claim 14:
15. A method of determining glucose values during continuous glucose monitoring (CGM) comprising:
providing a CGM device including a sensor, a memory, and a processor;
applying a constant voltage potential to the sensor during the continuous glucose monitoring,
wherein the continuous glucose monitoring comprises a plurality of distinct time periods;

measuring a primary current signal resulting from the constant voltage potential and storing the primary current signal in the memory;
applying a probing potential modulation sequence to the sensor,
wherein applying the probing potential modulation sequence further comprises:
applying a first voltage potential at a first distinct time period, and
applying a second voltage potential at a second distinct time period immediately subsequent to the first distinct time period;

measuring probing potential modulation current signals resulting from the probing potential modulation sequence and storing measured probing potential modulation current signals in the memory,
wherein measuring the probing potential modulation current signals further comprises:
measuring a first probing current during the first distinct time period for applying the first voltage potential, and
measuring a second probing current during the second distinct time period for applying the second voltage potential;

determining a conversion function value based on one of the measured probing potential modulation current signals;
determining an initial glucose concentration based on the conversion function value;
determining a connection function value based on the primary current signal and the measured probing potential modulation current signals,
wherein the connection function value is determined based at least partially on a ratio of the second probing current relative to the first probing current; and

determining a final glucose concentration based on the initial glucose concentration and the connection function value.