Method and Apparatus for Providing Analyte Monitoring System Calibration Accuracy

• US 20110029269A1
• Filed: 07/30/2010
• Published: 02/03/2011
• Est. Priority Date: 07/31/2009
• Status: Active Grant

• Current Assignee: Abbott Diabetes Care Incorporated (Abbott Laboratories Incorporated)
• Original Assignee: Abbott Diabetes Care Incorporated (Abbott Laboratories Incorporated)
• Inventors: Budiman, Erwin Satrya, Hayter, Gary Alan
• Granted Patent: US 8,478,557 B2
• Time in Patent Office: Days
• US Class Current: 702/104
• CPC Class Codes: A61B 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• CPC Class Codes: A61B 5/1495 Calibrating or testing of in-vivo probes
• CPC Class Codes: A61B 5/4839 combined with drug delivery
• CPC Class Codes: A61M 5/1723 using feedback of body parameters, e.g. blood-sugar, pressure measurement of body parameters A61B5/00

Abstract

Methods, system and devices for providing improved calibration accuracy of continuous glucose monitoring system based on insulin delivery information are provided.

Claims

1. A method, comprising:

detecting an analyte sensor calibration start event;

determining one or more parameters associated with a calibration routine corresponding to the detected calibration start event; and

executing the calibration routine based on the one or more determined parameters;

wherein the one or more determined parameters includes a medication delivery information.

2. The method of claim 1 wherein detecting the calibration start event includes monitoring an elapsed time period from initial analyte sensor placement.

3. The method of claim 1 wherein detecting the calibration start event is based at least in part on a predetermined schedule.

4. The method of claim 3 wherein the predetermined schedule includes approximately once every twenty four hours.

5. The method of claim 1 wherein the determined one or more parameters includes an amount of insulin dose delivered, a time period of the delivered insulin dose, an insulin sensitivity parameter, an insulin on board information, an exercise information, a meal intake information, an activity information, or one or more combinations thereof.

6. The method of claim 1 wherein the medication delivery information includes an insulin delivery amount and time information relative to the detected calibration start event.

7. The method of claim 1 wherein executing the calibration routine includes delaying the calibration routine by a predetermined time period.

8. The method of claim 7 wherein the predetermined time period includes approximately 1-2 hours.

9. The method of claim 1 wherein the calibration routine is not executed when one of the one or more determined parameters deviates from a predetermined threshold level.

10. The method of claim 9 wherein the predetermined threshold level is dynamically modified based on a variation in the corresponding one or more determined parameters.

11. The method of claim 9 wherein the predetermined threshold level is user defined.

12. The method of claim 1 wherein executing the calibration routine includes determining a reference measurement value.

13. The method of claim 12 wherein determining the reference measurement value includes:

prompting for a blood glucose measurement; and

receiving data corresponding to the measured blood glucose level.

14. The method of claim 1 wherein executing the calibration routine includes determining a sensitivity value associated with the analyte sensor.

15. The method of claim 1 wherein executing the calibration routine includes calibrating the analyte sensor.

16. A device, comprising:

one or more processors; and

a memory operatively coupled to the one or more processors, the memory for storing instructions which, when executed by the one or more processors, causes the one or more processors to detect an analyte sensor calibration start event, to determine one or more parameters associated with a calibration routine corresponding to the detected calibration start event, and to execute the calibration routine based on the one or more determined parameters, wherein the one or more determined parameters includes a medication delivery information.

17. The device of claim 16 wherein the analyte sensor includes a glucose sensor.

18. The device of claim 16 wherein the medication delivery information includes information associated with insulin dose administered.

19. The device of claim 16 further including an output unit operatively coupled to the one or more processors for outputting one or more data or signals associated with the calibration start event or the calibration routine.

20. A method, comprising:

initializing an analyte sensor;

receiving a data stream from the initialized analyte sensor;

detecting a calibration start event associated with the initialized analyte sensor;

determining one or more parameters associated with insulin dose administration; and

executing a calibration routine based on the one or more determined parameters.

21. A method, comprising:

detecting an impending glucose sensor calibration start event;

modifying a medical treatment profile to a higher than average target glucose level upon detection of the impending glucose sensor calibration start event;

determining one or more parameters associated with a calibration routine corresponding to the detected impending calibration start event, wherein the one or more determined parameters includes a current glucose level;

executing the calibration routine based on the one or more determined parameters; and

resetting the medical treatment profile to an average target glucose level.

22. The method of claim 21, wherein the calibration routine is executed only if the current glucose level is above a predetermined threshold.

23. The method of claim 22, wherein the predetermined threshold is higher than the average glucose level.

24. The method of claim 22, further comprising delaying execution of the calibration routine until the current glucose level is above the predetermined threshold.

25. The method of claim 21, further comprising outputting one or more data or signals associated with the calibration routine.

26. The method of claim 21, wherein the medical treatment profile includes insulin dose administration information.