Analyte sensor calibration management

• US 9,730,623 B2
• Filed: 02/05/2016
• Issued: 08/15/2017
• Est. Priority Date: 03/28/2008
• Status: Active Grant

• Current Assignee: Abbott Diabetes Care Incorporated (Abbott Laboratories Incorporated)
• Original Assignee: Abbott Diabetes Care Incorporated (Abbott Laboratories Incorporated)
• Inventors: Harper, Wesley Scott, Dunn, Timothy Christian, Budiman, Erwin Satrya, Doniger, Kenneth J., Hayter, Gary Alan
• Primary Examiner(s): JANG, CHRISTIAN YONGKYUN
• Application Number:
  US15/017,568
• Publication Number:
  US 20160151006A1
• Time in Patent Office: 557 Days
• CPC Class Codes: A61B 2560/0223 of calibration, e.g. protocols for calibrating sensors
• 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 5/1486 using enzyme electrodes, e.g. with immobilised oxidase
• CPC Class Codes: A61B 5/1495 Calibrating or testing of in-vivo probes
• CPC Class Codes: G16H 40/40 for the management of medical equipment or devices, e.g. scheduling maintenance or upgrades

Abstract

Methods and devices to detect analyte in body fluid are provided. Embodiments include positioning an analyte sensor in fluid contact with an analyte, detecting an attenuation in a signal from an analyte sensor after positioning during a predetermined time period, categorizing the detected attenuation in the analyte sensor signal based, at least in part, on one or more characteristics of the signal, performing signal processing to generate a reportable data associated with the detected analyte sensor signal during the predetermined time period, managing if and when to request additional reference signal measurements, and managing if and when to temporarily not display results.

Claims

1. A method, comprising:

positioning an analyte sensor in fluid contact with an analyte;

detecting an attenuation in a signal from the analyte sensor after positioning the analyte sensor during a predetermined time period;

categorizing, using one or more processors, the detected attenuation in the analyte sensor signal based, at least in part, on one or more characteristics of the signal, wherein the detected attenuation is associated with an early signal attenuation condition;

performing, using the one or more processors, signal processing to generate a reportable data associated with the detected attenuation in the analyte sensor signal during the predetermined time period; and

controlling administration of therapy based on the reportable data.

2. The method of claim 1, wherein the analyte comprises glucose.

3. The method of claim 1, wherein the predetermined time period does not exceed approximately 24 hours.

4. The method of claim 1, wherein categorizing the detected analyte sensor signal attenuation is based at least in part on a predetermined plurality of signal attenuation conditions.

5. The method of claim 4, wherein the plurality of signal attenuation conditions includes a reportable signal condition, a conditional reportable signal condition, and an unreportable signal condition.

6. The method of claim 5, including outputting data associated with a monitored analyte level based on the analyte sensor signal when the detected analyte sensor signal attenuation includes a reportable signal condition or a conditional reportable signal condition.

7. The method of claim 6, wherein outputting data associated with the monitored analyte level includes outputting data for a preset time period when the detected analyte sensor signal attenuation includes the conditional reportable signal condition.

8. The method of claim 7, wherein the preset time period does not exceed approximately two hours.

9. The method of claim 7, including requesting a reference blood glucose measurement during the preset time period.

10. The method of claim 9, including calibrating the analyte sensor signal based, at least in part, on the reference blood glucose measurement received during the preset time period.

11. The method of claim 7, including disabling outputting of the data associated with the monitored analyte level after the preset time period has elapsed.

12. The method of claim 1, wherein performing signal processing includes:

requesting a reference data; and

determining a sensitivity value associated with the analyte sensor based on the reference data.

13. An apparatus, comprising:

a data communication interface;

one or more processors operatively coupled to the data communication interface; and

a memory storing instructions which, when executed by the one or more processors, causes the one or more processors to detect positioning of an analyte sensor in fluid contact with an analyte, detect an attenuation in a signal from the analyte sensor after detecting the positioning of the analyte sensor during a predetermined time period, categorize the detected attenuation in the analyte sensor signal based, at least in part, on one or more characteristics of the signal, wherein the detected attenuation is associated with an early signal attenuation condition, perform signal processing to generate a reportable data associated with the detected attenuation in the analyte sensor signal during the predetermined time period, and control administration of therapy based on the reportable data.

14. The apparatus of claim 13, wherein the analyte comprises glucose.

15. The apparatus of claim 13, wherein the predetermined time period does not exceed approximately 24 hours.

16. The apparatus of claim 13, wherein the memory storing instructions which, when executed by the one or more processors, causes the one or more processors to categorize the detected analyte sensor signal attenuation based, at least in part, on a predetermined plurality of signal attenuation conditions.

17. The apparatus of claim 16, wherein the plurality of signal attenuation conditions includes a reportable signal condition, a conditional reportable signal condition, and an unreportable signal condition.

18. The apparatus of claim 17, wherein the memory storing instructions which, when executed by the one or more processors, causes the one or more processors to output data associated with a monitored analyte level based on the detected analyte sensor signal when the detected analyte sensor signal attenuation includes a reportable signal condition or a conditional reportable signal condition.

19. The apparatus of claim 18, wherein the memory storing instructions which, when executed by the one or more processors, causes the one or more processors to output data for a preset time period when the detected analyte sensor signal attenuation includes the conditional reportable signal condition.

20. The apparatus of claim 19, wherein the preset time period does not exceed approximately two hours.