Method and system for powering an electronic device

• US 8,593,109 B2
• Filed: 11/03/2009
• Issued: 11/26/2013
• Est. Priority Date: 03/31/2006
• Status: Expired due to Fees

• Current Assignee: Abbott Diabetes Care Incorporated (Abbott Laboratories Incorporated)
• Original Assignee: Abbott Diabetes Care Incorporated (Abbott Laboratories Incorporated)
• Inventors: He, Lei
• Primary Examiner(s): WILLIAMS, ARUN C
• Application Number:
  US12/611,734
• Publication Number:
  US 20100045231A1
• Time in Patent Office: 1,484 Days
• Field of Search: 320/108, 320/116
• US Class Current: 320/116
• CPC Class Codes: A61B 2560/0219 of externally powered implanted units
• CPC Class Codes: A61B 5/076 Permanent implantations telemetry using implanted circuitry A61B5/0031; implanted stimulators for therapy A61N1/3605, A61N1/362, A61N1/372
• 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 5/1451 for interstitial fluid
• 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 5/14865 invasive, e.g. introduced into the body by a catheter or needle or using implanted sensors
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries

Abstract

Methods and apparatus for providing a power supply to a device, including an inductive rechargeable power supply for a data monitoring and management system in which a high frequency magnetic field is generated to provide power supply to a rechargeable power source such as a battery of a transmitter unit in the data monitoring and management system are provided.

Claims

1. A method, comprising:

determining a time period associated with transmitting one or more signals from an on-body device to a receiver unit, wherein the on-body device is operatively coupled to an analyte sensor and is configured to monitor an analyte level, the transmitted one or more signals from the on-body device to the receiver unit corresponding to one or more signals generated by the analyte sensor associated with the monitored analyte level;

selectively generating a magnetic field at the receiver unit during the determined time period, wherein generating the magnetic field is programmed to automatically turn on or turn off only during the determined time period; and

inductively charging a rechargeable power source of the on-body device when the on-body device is placed within a predetermined distance from the generated magnetic field during the determined time period.

2. The method of claim 1, further comprising establishing a wireless communication range between the on-body device and the receiver unit.

3. The method of claim 2, wherein establishing the wireless communication range includes determining a signal strength from the on-body device and comparing the determined signal strength to a signal strength threshold level.

4. The method of claim 1, further comprising manually controlling the magnetic field generation.

5. The method of claim 1, wherein the determined time period includes a time to transmit two or more signals from the on-body device to the receiver unit.

6. The method of claim 1, further comprising generating the magnetic field in response to receiving the one or more signals associated with the monitored analyte level.

7. The method of claim 1, wherein the one or more signals are transmitted over a radio frequency (RF) communication link.

8. A glucose monitoring system, comprising:

a receiver unit comprising;

a timing unit;

a control unit operatively coupled to the timing unit, wherein the control unit is configured to determine, using the timing unit, a time period for receiving one or more signals wirelessly transmitted from a transmission unit operatively coupled to an analyte sensor; and

a power source section operatively coupled to the control unit, the power source section including a magnetic field generator unit configured to generate a magnetic field for the determined time period in response to a command from the control unit; and

a rechargeable power section, wherein the rechargeable power section is included with the transmission unit and wherein the rechargeable power section is recharged when provided at a predetermined distance from the generated magnetic field of the power source section during the determined time period;

wherein the control unit provides the command to the power source section to control the magnetic field generator unit to alternatingly turn on or turn off the generation of the magnetic field only during the determined time period to selectively recharge the rechargeable power section.

9. The glucose monitoring system of claim 8, wherein the power source section and the rechargeable power section comprise a power transformer unit.

10. The glucose monitoring system of claim 9, wherein the power transformer unit includes a high frequency power transformer.

11. The glucose monitoring system of claim 8, wherein the magnetic field generator unit includes a first multilayered coil inductor and wherein the rechargeable power section includes a second multilayered coil inductor.

12. The glucose monitoring system of claim 11, wherein each of the first multilayered coil inductor and the second multilayered coil inductor include a plurality of printed circuit board layers.

13. The glucose monitoring system of claim 11, wherein the first multilayered coil inductor includes a first ferrite layer and wherein the second multilayered coil inductor includes a second ferrite layer.

14. The glucose monitoring system of claim 8, wherein the one or more signals are wirelessly transmitted over a radio frequency (RF) communication link.

15. The glucose monitoring system of claim 8, wherein the transmission unit includes an antenna configured to resonate at the same frequency as the generated magnetic field.

16. The glucose monitoring system of claim 15, wherein the antenna is a parallel resonant loop antenna.

17. The glucose monitoring system of claim 8, wherein the rechargeable power section includes a rechargeable power supply unit configured to be inductively recharged by the power source section.

18. The glucose monitoring system of claim 8, further comprising a trigger switch configured for manually controlling the magnetic field generation.

19. The glucose monitoring system of claim 8, wherein the control unit is configured to determine, using the timing unit, a time period for receiving two or more signals wirelessly transmitted from the transmission unit.

20. The glucose monitoring system of claim 8, wherein the receiver unit is further configured to establish a wireless communication range with the transmission unit.