Medical Devices and Methods

• US 20160015267A1
• Filed: 08/31/2015
• Published: 01/21/2016
• Est. Priority Date: 08/31/2009
• Status: Active Grant

• Current Assignee: Abbott Diabetes Care Incorporated (Abbott Laboratories Incorporated)
• Original Assignee: Abbott Diabetes Care Incorporated (Abbott Laboratories Incorporated)
• Inventors: Bernstein, Daniel Milfred, Fennell, Martin J., Sloan, Mark Kent, Love, Michael, He, Lei, Thomas, Christopher Allen, Hoss, Udo, Feldman, Benjamin Jay, Doniger, Kenneth J., Stafford, Gary Ashley, Hayter, Gary Alan, Yee, Phillip, Kiaie, Namvar, Cole, Jean-Pierre, Dinh, Hung, Taub, Marc Barry, Pace, Louis George, Sicurello, Jeffery Mario
• Granted Patent: US 10,492,685 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 2560/0238 Means for recording calibration data
• CPC Class Codes: A61B 5/0017 transmitting optical signals transmission by light H04B10/00
• CPC Class Codes: A61B 5/0022 Monitoring a patient using a global network, e.g. telephone networks, internet
• 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 5/1486 using enzyme electrodes, e.g. with immobilised oxidase
• 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: G01N 33/48792 Data management, e.g. communication with processing unit for in vivo diagnostics A61B5/0002; transmission systems for measured values G08C
• CPC Class Codes: G16H 40/63 for local operation
• CPC Class Codes: G16H 40/67 for remote operation
• CPC Class Codes: Y02A 90/10 Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation

Abstract

Methods and devices to monitor an analyte in body fluid are provided. Embodiments include continuous or discrete acquisition of analyte related data from a transcutaneously positioned in vivo analyte sensor automatically or upon request from a user.

Claims

1. An apparatus, comprising:

an analyte sensor having a portion in fluid contact with bodily fluid under a skin surface and configured to generate signals corresponding to monitored analyte level in the bodily fluid, wherein the analyte sensor does not require user initiated calibration during the entire period of the analyte sensor usage life;

a power supply; and

sensor electronics operatively coupled to the analyte sensor and the power supply, the sensor electronics configured to receive the signals generated by the analyte sensor and to generate one or more data packets including the received signals from the analyte sensor;

wherein the sensor electronics is configured to alternate drawing power from the power supply and from radio frequency (RF) power of a remote device positioned within a predetermined distance from the sensor electronics.

2. The apparatus of claim 1, wherein the sensor electronics is configured to disable a connection to the power supply when a predetermined level of RF power is detected.

3. The apparatus of claim 2, wherein the sensor electronics is powered by the RF power from the remote device to generate the one or more data packets.

4. The apparatus of claim 2, further including a switch connecting the power supply to the sensor electronics, wherein the switch is open when the predetermined level of RF power is detected such that the connection between the power supply and the sensor electronics is disabled.

5. The apparatus of claim 4, wherein the switch is closed when the predetermined level of RF power is no longer detected by the sensor electronics such that the sensor electronics is electrically connected to the power supply.

6. The apparatus of claim 1, further including a rechargeable power source operatively coupled to the sensor electronics, wherein when the remote device is positioned with a predetermined distance from the sensor electronics, the RF power from the remote device charges the rechargeable power source.

7. The apparatus of claim 1, wherein the bodily fluid includes one of dermal fluid or interstitial fluid.

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

9. The apparatus of claim 8, wherein the analyte-responsive enzyme is chemically bonded to the polymer disposed on the working electrode.

10. The apparatus of claim 8, wherein the working electrode comprises a mediator bonded to the polymer disposed on the working electrode.

11. The apparatus of claim 10, wherein the mediator is crosslinked with the polymer disposed on the working electrode.

12. The apparatus 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.

13. The apparatus of claim 1, wherein the entire period of the analyte sensor usage life corresponds to the time period of monitoring the analyte level in the bodily fluid, and starts when the sensor electronics is activated, and ends when the sensor electronics is deactivated.

14. The apparatus of claim 13, wherein the sensor electronics is deactivated when no additional signals from the analyte sensor is processed by the sensor electronics.

15. The apparatus of claim 1, further including a data storage unit for storing an identification information and analyte sensor calibration information.

16. The apparatus of claim 15, wherein the sensor electronics is operatively coupled to the data storage unit, and the generated one or more data packets include the identification information and the analyte sensor calibration information.