Analyte Monitoring System and Methods

• US 20150238130A1
• Filed: 05/11/2015
• Published: 08/27/2015
• Est. Priority Date: 05/08/2007
• Status: Active Grant

• Current Assignee: Abbott Diabetes Care Incorporated (Abbott Laboratories Incorporated)
• Original Assignee: Abbott Diabetes Care Incorporated (Abbott Laboratories Incorporated)
• Inventors: Fennell, Martin J., He, Lei, Sloan, Mark Kent
• Granted Patent: US 9,649,057 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 2560/0223 of calibration, e.g. protocols for calibrating sensors
• CPC Class Codes: A61B 5/0002 Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network A61B5/07 takes precedence; transmission systems for measured values G08C; transmission H04B; transmission of digital information H04L; wireless communication networks H04W
• CPC Class Codes: A61B 5/0026 characterised by the transmission medium
• CPC Class Codes: A61B 5/0031 Implanted circuitry
• 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 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• CPC Class Codes: A61B 5/14546 for measuring analytes not otherwise provided for, e.g. ions, cytochromes
• CPC Class Codes: A61B 5/1468 using chemical or electrochemical methods, e.g. by polarographic means A61B5/1486 takes precedence
• CPC Class Codes: A61B 5/1473 invasive, e.g. introduced into the body by a catheter A61B5/1482 takes precedence
• CPC Class Codes: A61B 5/14865 invasive, e.g. introduced into the body by a catheter or needle or using implanted sensors
• CPC Class Codes: A61B 5/72 Signal processing specially adapted for physiological signals or for diagnostic purposes character recognition, recognising digital ink, document-oriented image-based pattern recognition G06V30/00; recognition or understanding of postal images G06V30/424
• CPC Class Codes: A61B 5/7278 Artificial waveform generation or derivation, e.g. synthesising signals from measured signals A61B5/327 takes precedence
• CPC Class Codes: A61B 5/742 using visual displays A61B5/339 takes precedence

Abstract

Methods and systems for providing data communication in medical systems are disclosed.

Claims

1. An analyte monitoring device, comprising:

an analyte sensor for positioning in fluid contact with bodily fluid under a skin surface to monitor an analyte level in the bodily fluid; and

sensor electronics operatively coupled to the analyte sensor and configured to communicate an identification information to a remote location in response to one or more predefined commands received from the remote location when the sensor electronics is positioned within a predetermined distance from the remote location, the sensor electronics further configured to communicate a response data packet to the remote location based on the received one or more predefined commands, the sensor electronics including a memory and configured to update a memory location in the memory with each data communication to the remote location.

2. The device of claim 1, wherein the identification information includes one or more of sensor electronics identifier information, and analyte sensor parameter information.

3. The device of claim 2, wherein the analyte sensor parameter information includes a sensor calibration parameter stored in the memory device of the sensor electronics.

4. The device of claim 3, wherein the sensor calibration parameter includes a predetermined calibration code.

5. The device of claim 1, wherein the sensor electronics includes an application specific integrated circuit (ASIC).

6. The device of claim 1, wherein the sensor electronics is in wireless communication with the remote location.

7. The device of claim 1, wherein the sensor electronics includes a current to frequency conversion unit operatively coupled to the analyte sensor, the current to frequency conversion unit configured to receive current signals from the analyte sensor corresponding to the monitored analyte level, and to convert the received current signals to respective counts.

8. The device of claim 1, wherein the sensor electronics updates the memory location in the memory of the sensor electronics by incrementing a bit count in the memory location.

9. The device of claim 8, wherein the incremented bit count corresponds to a remaining battery life of a battery in the sensor electronics.

10. The device of claim 1, wherein the data communicated to the remote location includes real time and historical data associated with the monitored analyte level, and further wherein the historical data associated with the monitored analyte level corresponds to signals obtained from the analyte sensor and stored in the memory prior to the data communication.

11. The device of claim 1, wherein the analyte sensor includes a plurality of electrodes including a working electrode comprising a glucose-responsive enzyme bonded to a polymer disposed on the working electrode.

12. The device of claim 11, wherein the glucose-responsive enzyme is chemically bonded to the polymer disposed on the working electrode.

13. The device of claim 11, wherein the working electrode further includes a mediator.

14. The device of claim 13, wherein the mediator is crosslinked with the polymer.

15. The device of claim 1, wherein the analyte sensor includes a plurality of electrodes including a working electrode comprising a mediator bonded to a polymer disposed on the working electrode.

16. The device of claim 1, wherein the analyte sensor requires no user calibration when in fluid contact with the bodily fluid under the skin surface.

17. The device of claim 16, wherein the analyte sensor requires no user calibration during the time the analyte sensor monitors the analyte level in the bodily fluid.

18. The device of claim 1, wherein the analyte sensor is factory calibrated.

19. The device of claim 1, wherein the sensor electronics is configured to communicate data corresponding to signals from the analyte sensor of the monitored analyte level.

20. The device of claim 1, wherein the sensor electronics is configured to perform one or more predefined functions in response to the received one or more predefined commands.