Analyte Sensor Calibration Management

• US 20130116527A1
• Filed: 12/28/2012
• Published: 05/09/2013
• 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 S., Hayter, Gary, Doniger, Kenneth J.
• Granted Patent: US 8,718,739 B2
• Time in Patent Office: Days
• US Class Current: 600/365
• 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 of configuring a glucose monitoring system to detect early signal attenuation, the method comprising:

programming a processor of an in vivo glucose monitoring system to;

monitor for glucose signal from an analyte sensor positioned in fluid contact with interstitial fluid level below a predetermined threshold during a period of time immediately following sensor positioning, and

report glucose level associated with the glucose sensor only when the signal level monitored is not detected during the predefined time period.

2. The method of claim 1, wherein the predefined time period is within one day of sensor positioning.

3. The method of claim 2, wherein the predefined time period is within one hour of sensor positioning.

4. The method of claim 1, further comprising programming the processor to request a reference measurement when the signal is not detected.

5. The method of claim 1, wherein the predetermined threshold is predefined signal attenuation level.

6. The method of claim 1, wherein further comprising programming the processor not to report glucose level when the signal level monitored is detected during the predetermined time period.

10. The method of claim 1, wherein the processor is programmed to request a reference measurement when the signal is not detected.

7. An in vivo glucose monitoring system comprising:

an in vivo glucose sensor configured for in vivo positioning at least a portion of the sensor in fluid contact with interstitial fluid; and

a processor programmed to receive signal from the in vivo glucose sensor, monitor the signal to determine if it is below a predetermined threshold during a period of time immediately following sensor positioning, and report glucose level associated with the glucose sensor only if the signal level monitored is not detected during the predefined time period.

8. The system of claim 7, wherein the processor is programmed so that the predefined time period is within one day of sensor positioning.

9. The system of claim 8, wherein the processor is programmed so that the predefined time period is within one day of sensor positioning.