Method and apparatus for providing sensor guard for data monitoring and detection systems

• US 20070135697A1
• Filed: 11/10/2004
• Published: 06/14/2007
• Est. Priority Date: 04/19/2004
• Status: Abandoned Application

• Current Assignee: Abbott Diabetes Care Incorporated (Abbott Laboratories Incorporated)
• Original Assignee: Therasense Incorporated (Abbott Laboratories Incorporated)
• Inventors: Reggiardo, Christopher
• Application Number:
  US10/986,542
• Publication Number:
  US 20070135697A1
• Time in Patent Office: Days
• US Class Current: 600/347
• CPC Class Codes: A61B 2562/043 in a linear array
• CPC Class Codes: A61B 2562/046 in a matrix array
• CPC Class Codes: A61B 2562/182 Electrical shielding, e.g. using a Faraday cage
• CPC Class Codes: A61B 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• CPC Class Codes: A61B 5/14865 invasive, e.g. introduced into the body by a catheter or needle or using implanted sensors

Abstract

Method and apparatus for providing sensor guard for data monitoring and detection system having a sensor for detecting one or more glucose levels, the sensor including a work electrode disposed on a base material, a reference electrode disposed on the base material, and a guard electrode disposed on the base material, where the guard electrode is maintained substantially at equipotential to the work electrode, and a transmitter operatively coupled to the work electrode and the reference electrode of the sensor for receiving said detected glucose levels, where the transmitter is further configured to transmit a respective signal corresponding to each of the detected glucose levels using a data transmission protocol including wireless data transmission protocols, to a receiver which is configured to receive the transmitted signals corresponding to said detected glucose levels is provided. The method and apparatus may also include insulin administration unit such as an insulin pump configured to be in data communication with the transmitter and/or the receiver for administering an appropriate insulin dosage based on the measured glucose levels.

Claims

1. A sensor, comprising:

a work electrode disposed on a base material;

a reference electrode disposed on said base material; and

a guard electrode disposed on said base material, wherein the guard electrode is disposed substantially around said work electrode;

wherein at least a portion of one of the work or reference electrodes is disposed over at least a portion of the other one of the work or reference electrodes such that the at least portion of the other one of the work or reference electrodes is disposed between the at least the portion of the one of the work or reference electrodes and the base material.

2. The sensor of claim 1 wherein the base material includes one of Melinex or Mylar.

3. The sensor of claim 1 wherein the guard electrode is configured to be maintained substantially at equipotential to the work electrode.

4. The sensor of claim 1 wherein the guard electrode is configured to protect a current leakage path to said work electrode.

5. The sensor of claim 1 wherein the guard electrode is disposed substantially between said work electrode and said reference electrode.

6. The sensor of claim 1 further including a counter electrode disposed on said base material.

11. The sensor of claim 1 further including a protective layer disposed on said base material.

12. The sensor of claim 11 wherein the protective layer includes a window to expose a portion of one of the work or reference electrodes.

46. The sensor of claim 1 further including a dielectric layer disposed between the base material and the one or more work or reference electrodes.

7. (canceled)

8. (canceled)

9. (canceled)

10. (canceled)

13. A glucose monitoring system, comprising:

a sensor for detecting a glucose level, the sensor including;

a work electrode disposed on a base material;

a reference electrode disposed on said base material;

a guard electrode disposed on said base material, wherein the guard electrode is disposed substantially around said work electrode;

wherein at least a portion of one of the work or reference electrodes is disposed over at least a portion of the other one of the work or reference electrodes such that the at least the portion of the other one of the work or reference electrodes is disposed between the at least the portion of the one of the work or reference electrodes and the base material; and

a transmitter operatively coupled to the work electrode and the reference electrode of the sensor for receiving said detected glucose level, said transmitter further configured to transmit a signal corresponding to said detected glucose level.

14. The glucose monitoring system of claim 13 wherein the transmitter is configured to transmit said signal wirelessly.

15. The glucose monitoring system of claim 14 wherein said transmitter is configured to transmit said signal using one of a RF transmission protocol, a IrDA transmission protocol, a Bluetooth transmission protocol, a Zigbee transmission protocol, an 802.11x transmission protocol, or an infrared transmission protocol.

16. The glucose monitoring system of claim 13 further including a receiver operatively coupled to said transmitter, said receiver configured to receive said transmitted signal corresponding to said detected glucose level.

17. The glucose monitoring system of claim 16 wherein said receiver is configured to receive said transmitted signal over a wireless network.

18. The glucose monitoring system of claim 16 wherein said receiver includes a blood glucose monitor configured to generate an output signal based on said received transmitted signal.

19. The glucose monitoring system of claim 18 wherein said output signal generated includes one or more of an alphanumeric, a two-dimensional graphic, a three-dimensional graphic, or an auditory representation of a glucose level corresponding to said detected glucose level.

20. The glucose monitoring system of claim 18 wherein said receiver includes a display section, and further, wherein said generated output signal is displayed on said display section of said receiver.

21. The glucose monitoring system of claim 20 wherein said display section includes one of a Liquid Crystal Display, or a plasma display.

22. The glucose monitoring system of claim 20 wherein the generated output signal is displayed in a graphical representation on said display section.

23. The glucose monitoring system of claim 13 wherein said sensor is configured to detect a predetermined number of glucose levels over a predefined time period, and further, wherein said transmitter is further configured to transmit said predetermined number of glucose levels substantially in real time relative to the corresponding detection by the sensor over the predefined time period.

24. The glucose monitoring system of claim 23 further including a receiver configured to receive said predetermined number of glucose levels over said predefined time period from said transmitter.

25. The glucose monitoring system of claim 24 wherein said receiver is configured to receive said predetermined number of glucose levels over a wireless data network.

26. The glucose monitoring system of claim 23 wherein said receiver is further configured to generate one or more signals corresponding to each of said predetermined number of glucose levels received from said transmitter.

27. The glucose monitoring system of claim 23 wherein said receiver is further configured to display said generated one or more signals substantially in real time relative to the reception of the corresponding glucose levels from said transmitter.

28. The glucose monitoring system of claim 13 wherein the guard electrode of the sensor is maintained substantially at equipotential to the work electrode.

29. The glucose monitoring system of claim 13 wherein the guard electrode is configured to protect a current leakage path to said work electrode.

30. The glucose monitoring system of claim 13 wherein the guard electrode is disposed substantially between said work electrode and said reference electrode.

31. The glucose monitoring system of claim 13 further including a counter electrode disposed on said base material.

34. The glucose monitoring system of claim 13 further including a protective layer disposed on said base material.

35. The glucose monitoring system of claim 34 wherein the protective layer includes a window to expose a portion of one of the work or reference electrodes.

36. The glucose monitoring system of claim 13 further including an insulin administration unit for administering an insulin dose based on said detected glucose level.

37. The glucose monitoring system of claim 36 wherein said insulin administration unit includes an insulin pump configured to be in data communication with said transmitter.

38. The glucose monitoring system of claim 37 wherein said insulin pump includes a receiver configured to receive the signal from said transmitter over a wireless data connection.

47. The glucose monitoring system of claim 13 wherein the sensor further includes a dielectric layer disposed between the base material and the one or more work or reference electrodes. 48. The method of claim 39 further including disposing a dielectric layer between the base material and the one or more work or reference electrodes.

32. (canceled)

33. (canceled)

39. A method of providing a sensor for use in glucose monitoring system, comprising the steps of:

disposing a work electrode on a base material;

disposing a reference electrode on said base material;

disposing a guard electrode on said base material, wherein the guard electrode is disposed substantially around said work electrode; and

wherein at least a portion of one of the work or reference electrodes is disposed over at least a portion of the other one of the work or reference electrodes such that the at least the portion of the other one of the work or reference electrodes is disposed between the at least the portion of the one of the work or reference electrodes and the base material.

40. The method of claim 39 further including the step of maintaining the guard electrode substantially at equipotential to the work electrode.

41. The method of claim 39 wherein the step of disposing said guard electrode including the step of disposing said guard electrode substantially between said work electrode and said reference electrode.

42. The method of claim 39 further including the step of disposing a counter electrode on said base material.

44. The method of claim 39 further including the step of disposing a protective layer over said dielectric window on said base material.

43. (canceled)

45. The method of claim 45 wherein the protective layer includes a window to expose a portion of one of the work or reference electrodes.