Temperature-Compensated Analyte Monitoring Devices, Systems, and Methods Thereof

• US 20180153454A1
• Filed: 01/17/2018
• Published: 06/07/2018
• Est. Priority Date: 06/16/2011
• Status: Active Grant

• Current Assignee: Abbott Diabetes Care Incorporated (Abbott Laboratories)
• Original Assignee: Abbott Diabetes Care Incorporated (Abbott Laboratories)
• Inventors: Hayter, Gary A., Bernstein, Daniel M., Fennell, Martin J., Love, Michael R., Doniger, Kenneth J., Zhang, Songbiao, Sloan, Mark K., Cho, Hyun, Kunich, Theodore J., Cole, Jean-Pierre, Thomas, Christopher A., Budiman, Erwin S., Li, David L., Cheng, Royce, Hoss, Udo
• Granted Patent: US 10,398,363 B2
• Time in Patent Office: Days
• CPC Class Codes: A61B 2560/0252 using ambient temperature
• CPC Class Codes: A61B 2562/0271 Thermal or temperature sensors
• CPC Class Codes: A61B 5/01 Measuring temperature of body parts ; Diagnostic temperature sensing, e.g. for malignant or inflamed tissue clinical contact thermometers G01K13/20
• CPC Class Codes: A61B 5/14503 invasive, e.g. introduced into the body by a catheter or needle or using implanted sensors A61B5/1459, A61B5/1464, A61B5/1473, A61B5/1482, A61B5/14865 take precedence
• CPC Class Codes: A61B 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• CPC Class Codes: A61B 5/1473 invasive, e.g. introduced into the body by a catheter A61B5/1482 takes precedence
• CPC Class Codes: A61B 5/7225 Details of analog processing, e.g. isolation amplifier, gain or sensitivity adjustment, filtering, baseline or drift compensation A61B5/30, A61B5/316 take precedence; transformers for specific applications H01F38/00; amplifiers H03F

Abstract

Methods of compensating for ambient temperature using a single temperature sensor, the method comprising detecting a first temperature measurement from a temperature sensor; and determining, with a processor, an ambient-compensated temperature from the first temperature measurement using an offset term. The method may also include receiving a sensor signal from an in vivo analyte sensor; and determining, with a processor, a temperature-compensated analyte sensor signal with the ambient-compensated temperature.

Claims

1. A method of compensating for ambient temperature using a single temperature sensor, the method comprising:

detecting a first temperature measurement from a temperature sensor; and

determining, with a processor, an ambient-compensated temperature from the first temperature measurement using an offset term.

2. The method of claim 1, comprising:

receiving a sensor signal from an in vivo analyte sensor; and

determining, with a processor, a temperature-compensated analyte sensor signal with the ambient-compensated temperature.

3. The method of claim 2, wherein the analyte is glucose.

4. The method of claim 2, wherein the in vivo analyte sensor is a subcutaneous analyte sensor.

5. The method of claim 1, comprising:

detecting a second temperature measurement from the temperature sensor;

determining, with a processor, an ambient-compensated temperature from the rate of change of skin temperature between the first temperature measurement and the second temperature measurement using an offset term.

6. The method of claim 5 wherein the ambient-compensated temperature is determined using a combination of the rate of change of skin temperature between the first temperature measurement and the second temperature measurement and the second temperature measurement.

7. The method of claim 1, wherein the offset term that is based on a predetermined core body temperature, and wherein the predetermined core body temperature is between 36°

C. and 38°

C.

8. An analyte monitoring device, comprising:

a housing;

a processor coupled to the housing;

wherein an in vivo analyte sensor is communicably coupled to the processor;

wherein a temperature sensor is communicably coupled to the processor; and

memory communicably coupled to the processor, wherein the memory includes instructions stored therein that, when executed by the processor, cause the processor to;

detect a temperature measurement from the temperature sensor; and

determine an ambient-compensated temperature from the temperature measurement using an offset term.

9. The analyte monitoring device of claim 8, wherein the memory includes instructions that, when executed by the processor, cause the processor to:

receive a sensor signal from the in vivo analyte sensor; and

determine a temperature-compensated analyte sensor signal with the ambient-compensated temperature.

10. The analyte monitoring device of claim 8, wherein the offset term that is based on a predetermined core body temperature, and wherein the predetermined core body temperature is between 36°

C. and 38°

C.

11. The method of claim 9, wherein the analyte is glucose.

12. The method of claim 9, wherein the in vivo analyte sensor is a subcutaneous analyte sensor.

13. An analyte monitoring system, comprising:

an on-body unit, comprising;

a first processor and first memory communicably coupled to the first processor;

an in vivo analyte sensor communicably coupled to the first processor;

a temperature sensor communicably coupled to the first processor; and

,

a receiver configured to communicate with the on-body unit, the receiver comprising;

a second processor and second memory communicably coupled to the second processor;

wherein at least one of the first memory and second memory includes instructions stored therein that, when executed by at least one of the first and second processors, cause the at least one first and second processor to;

detect a temperature measurement from the temperature sensor; and

determine an ambient-compensated temperature from the temperature measurement using an offset term.

14. The analyte monitoring system of claim 13, wherein the offset term that is based on a predetermined core body temperature, and wherein the predetermined core body temperature is between 36°

C. and 38°

C.

15. The method of claim 13, wherein the analyte is glucose.

16. The method of claim 13, wherein the in vivo analyte sensor is a subcutaneous analyte sensor.