Method and Apparatus for Providing Peak Detection Circuitry for Data Communication Systems

• US 20100171610A1
• Filed: 03/15/2010
• Published: 07/08/2010
• Est. Priority Date: 04/28/2003
• Status: Active Grant

• Current Assignee: Abbott Diabetes Care Incorporated (Abbott Laboratories Incorporated)
• Original Assignee: Abbott Diabetes Care Incorporated (Abbott Laboratories Incorporated)
• Inventors: Reggiardo, Christopher V.
• Granted Patent: US 8,512,246 B2
• Time in Patent Office: Days
• US Class Current: 340/539.100
• CPC Class Codes: A61B 2560/0214 of power generation or supply
• CPC Class Codes: A61B 2560/0252 using ambient temperature
• 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 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• CPC Class Codes: G01D 4/00 Tariff metering apparatus in taximeters G07B13/00; apparatus actuated by coins, cards or the like with meter-controlled dispensing of liquid, gas, or electricity G07F15/00
• CPC Class Codes: G16H 40/67 for remote operation

Abstract

Method and apparatus for providing a peak detection circuit comprising a diode including an input terminal and an output terminal the input terminal of the diode configured to receive an input signal, a capacitor operatively coupled to the output terminal of the diode, an output terminal operatively coupled to the capacitor and the output terminal of the diode for outputting an output signal is provided. Other equivalent switching configuration is further provided to effectively detect and compensate for a voltage droop from a power supply signal, as well as to electrically isolate the voltage droop from the system circuitry.

Claims

1. An analyte monitoring assembly, comprising:

an analyte sensor having a portion configured for transcutaneous positioning in fluid contact with interstitial fluid, the analyte sensor configured to detect an analyte level; and

a data communication unit including an analog interface operatively coupled to the analyte sensor and configured to receive one or more signals associated with the analyte level, the data communication unit configured to communicate one or more data corresponding to the one or more signals associated with the analyte level, the data communication unit further including a peak detection unit configured to detect a condition associated with a power source of the data communication unit;

wherein the peak detection unit is configured to electrically isolate the power source of the data communication unit from the analog interface and to provide power to the analog interface when the condition associate with the power source is detected.

2. The assembly of claim 1 wherein the data communication unit is configured to wirelessly communicate the one or more data corresponding to the one or more signals associated with the analyte level to a remote location.

3. The assembly of claim 1 wherein the data communication unit includes a radio frequency antenna for data communication.

4. The assembly of claim 1 wherein the peak detection circuit is configured to provide power to the analog interface of the data communication unit when the analog interface is electrically isolated from the power source of the data communication unit.

5. The assembly of claim 1 wherein the peak detection circuit includes:

a diode including an input terminal and an output terminal, said input terminal of said diode configured to receive an input signal;

a capacitor operatively coupled to said output terminal of said diode; and

an output terminal operatively coupled to said capacitor and said output terminal of said diode for outputting an output signal.

6. The assembly of claim 5 wherein said diode includes a Schottky diode switch.

7. The assembly of claim 5 wherein said input signal includes a voltage signal from the power source.

8. The assembly of claim 5 wherein the detected condition includes a voltage droop associated with the power source.

9. The assembly of claim 8 wherein the voltage droop is detected at said input terminal of said diode, and further, wherein said diode and said capacitor are configured to compensate for said voltage droop.

10. The assembly of claim 1 wherein the detected condition is associated with the communication of the one or more data corresponding to the one or more signals associated with the analyte level.

11. The assembly of claim 1 wherein the analyte sensor includes a glucose sensor.

12. The assembly of claim 1 wherein the analyte sensor includes an electrochemical sensor.

13. The assembly of claim 1 wherein the data communication unit further includes a low pass filter operatively coupled to the peak detection circuit.

14. The assembly of claim 1 wherein said peak detection circuit includes a passive switching configuration.

15. The assembly of claim 1 wherein said peak detection circuit includes a diode operatively coupled to a capacitance.

16. The system of claim 15 wherein said diode includes a Schottky diode switch.

17. A method, comprising:

transcutaneously positioning an analyte sensor in fluid contact with interstitial fluid;

detecting an analyte level from the analyte sensor;

providing one or more signals associated with the detected analyte level from the analyte sensor received by an analog interface of a data communication device;

detecting a predetermined condition associated with a power source; and

electrically isolating the analog interface from the power source when the predetermined condition is detected; and

supplying power to the analog interface from a source other than the power source when the predetermined condition is detected;

wherein the one or more signals associated with the detected analyte level from the analyte sensor are communicated during the time period when the predetermined condition is detected.

18. The method of claim 17 wherein the one or more signals associated with the detected analyte level is wirelessly communicated to a remote location.

19. The method of claim 17 including coupling the analog interface to the power source when the predetermined condition is no longer detected.

20. The method of claim 17 wherein the source other than the power source for supplying power to the analog interface when the predetermined condition is detected includes a peak detection circuit.