Optimizing analyte sensor calibration

• US 9,662,056 B2
• Filed: 05/22/2014
• Issued: 05/30/2017
• Est. Priority Date: 09/30/2008
• 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, Harper, Wesley Scott, Dunn, Timothy Christian
• Primary Examiner(s): Cheng, Jacqueline
• Assistant Examiner(s): SHAH, JAY B
• Application Number:
  US14/285,575
• Publication Number:
  US 20140257059A1
• Time in Patent Office: 1,104 Days
• Field of Search: None
• 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 5/7221 Determining signal validity, reliability or quality A61B5/7207 and A61B5/7217 take precedence

Abstract

Method and apparatus for optimizing analyte sensor calibration including receiving a current blood glucose measurement, retrieving a time information for an upcoming scheduled calibration event for calibrating an analyte sensor, determining temporal proximity between the current blood glucose measurement and the retrieved time information for the upcoming calibration event, initiating a calibration routine to calibrate the analyte sensor when the determined temporal proximity is within a predetermined time period, and overriding the upcoming scheduled calibration event using the current blood glucose measurement are provided.

Claims

1. A method, comprising:

determining, using one or more processors, a temporal proximity between when reference analyte data is received and a time information for an upcoming calibration event associated with an analyte sensor; and

calibrating one or more signals received from the analyte sensor when the determined temporal proximity is within a predetermined time period.

2. The method of claim 1, wherein calibrating the one or more signals received from the analyte sensor includes calibrating based on an analyte level measurement of the reference analyte data.

3. The method of claim 2, including determining, using the one or more processors, a validity of the reference analyte data.

4. The method of claim 3, wherein determining the validity of the reference analyte data includes analyzing the reference analyte data based on a predetermined threshold range, a temperature information, or a combination thereof.

5. The method of claim 2, further including determining, using the one or more processors, a validity of the one or more signals received from the analyte sensor.

6. The method of claim 5, wherein determining the validity of the one or more signals received from the analyte sensor includes one or more of analyzing the one or more signals received from the analyte sensor based on one or more of a rate of change of an analyte level, a temperature information, a predetermined analyte level threshold range, or one or more combinations thereof.

7. The method of claim 2, further including overriding the upcoming calibration event when the reference analyte data is accepted for calibrating the one or more signals received from the analyte sensor.

8. The method of claim 7, wherein the upcoming calibration event is a scheduled calibration, and further comprising providing a notification to a user that the user will not be prompted to perform the scheduled calibration.

9. The method of claim 1, further including validating one or more calibration condition parameters associated with the calibration of the one or more signals received from the analyte sensor.

10. The method of claim 1, further including generating an output signal confirming completion of calibrating the one or more signals received from the analyte sensor.

11. The method of claim 1, further including updating a calibration schedule based on calibrating the one or more signals received from the analyte sensor.

12. The method of claim 11, wherein updating the calibration schedule comprises replacing an event in the calibration schedule corresponding to the upcoming calibration event with an event for the calibrating of the one or more signals received from the analyte sensor.

13. The method of claim 1, further including automatically calibrating the one or more signals received from the analyte sensor when the determined temporal proximity is within the predetermined time period.

14. A method, comprising:

validating, using one or more processors, one or more conditions associated with calibration of one or more signals received from an analyte sensor when an upcoming calibration event is within a predetermined time period from when reference analyte data is received; and

calibrating, using the one or more processors, the one or more signals received from the analyte sensor based on the received reference analyte data when the one or more conditions associated with the calibration of the one or more signals received from the analyte sensor is validated.

15. The method of claim 14, wherein the analyte sensor is associated with a time spaced calibration schedule including the calibration event.

16. The method of claim 15, wherein the time spaced calibration schedule includes unevenly time spaced calibration events during a life of the analyte sensor.

17. The method of claim 15, further including updating, using the one or more processors, the time spaced calibration schedule based on the calibration of the one or more signals received from the analyte sensor using the received reference analyte data.

18. The method of claim 14, further including associating, using the one or more processors, the reference analyte data with a corresponding one or more signals received from the analyte sensor.

19. The method of claim 14, further including disabling, using the one or more processors, a calibration routine associated with the calibration event.

20. An apparatus, comprising:

one or more processors; and

a memory operatively coupled to the one or more processors for storing instructions which, when executed by the one or more processors, is configured to determine a temporal proximity between when reference analyte data is received and a time information for an upcoming calibration event, and to calibrate one or more signals from an analyte sensor when the determined temporal proximity is within a predetermined time period.

21. The apparatus of claim 20, further including an input unit to receive the reference analyte data.

22. The apparatus of claim 21, further including an output unit configured to output information associated with the one or more signals received from the analyte sensor, the reference analyte data, the temporal proximity, or the calibration event.