Continuous Glucose Monitoring System and Methods of Use

• US 20110028817A1
• Filed: 10/11/2010
• Published: 02/03/2011
• Est. Priority Date: 12/31/2002
• Status: Active Grant

• Current Assignee: Abbott Diabetes Care Incorporated (Abbott Laboratories)
• Original Assignee: Abbott Diabetes Care Incorporated (Abbott Laboratories)
• Inventors: Jin, Robert Y., Sloan, Mark K.
• Granted Patent: US 8,187,183 B2
• Time in Patent Office: Days
• US Class Current: 600/365
• CPC Class Codes: A61B 2562/08 Sensors provided with means for identification, e.g. barcodes or memory chips
• 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 5/01 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

Abstract

A continuous glucose monitoring system including a sensor configured to detect one or more glucose levels, a transmitter operatively coupled to the sensor, the transmitter configured to receive the detected one or more glucose levels, the transmitter further configured to transmit signals corresponding to the detected one or more glucose levels, and a receiver operatively coupled to the transmitter configured to receive transmitted signals corresponding to the detected one or more glucose levels, and methods thereof, are disclosed. In one aspect, the transmitter may be configured to transmit a current data point and at least one previous data point, the current data point and the at least one previous data point corresponding to the detected one or more glucose levels.

Claims

1. A system comprising:

a sensor configured to sample glucose levels of a user;

an on-body unit operatively coupled to the sensor, the on-body unit comprising a transmitter, a memory for storing a plurality of data points corresponding to the sampled glucose levels of the user, and a processor configured to generate one or more data packets, wherein each of the one or more data packets include the plurality of data points, wherein at least a first one of the plurality of data points corresponds to a glucose level from a first time period and wherein at least a second one of the plurality of data points corresponds to a glucose level from a second time period; and

a receiver unit operatively coupled to the on-body unit, the receiver unit configured to establish a wireless communication range with the transmitter of the on-body unit and receive the one or more data packets from the transmitter of the on-body unit when the receiver unit is placed within the established wireless communication range.

2. The system of claim 1, wherein the one or more data packets are transmitted using a radio frequency (RF) communication link.

3. The system of claim 1, wherein the wireless communication range is established based on a wireless signal strength from the on-body unit.

4. The system of claim 1, wherein the on-body unit further includes a temperature detection section configured to detect a first temperature related signal corresponding to the glucose level from the first time period or a second temperature related signal corresponding to the glucose level from the second time period.

5. The system of claim 4, wherein the receiver unit is further configured to receive the first or second temperature related signals when the receiver unit is placed within the established wireless communication range.

6. The system of claim 1, wherein the on-body unit is configured to encode the one or more data packets.

7. The system of claim 6, wherein the one or more data packets is encoded using Reed-Solomon encoding.

8. The system of claim 1, wherein the glucose level from the first time period corresponds to a current glucose level and wherein the glucose level from the second time period corresponds to a glucose level immediately preceding the current glucose level.

9. The system of claim 1, wherein the on-body unit includes a switch configured to disable one or more functionalities of the on-body unit.

10. The system of claim 1, wherein the on-body unit is configured to operate in a plurality of operating modes.

11. The system of claim 10, wherein the plurality of operating modes include a disabled mode, a transmission mode, and a sleep mode.

12. A method comprising:

establishing a wireless communication range between an on-body unit operatively coupled to a sensor and a receiver unit; and

transmitting at least one data packet from the on-body unit to the receiver unit when the receiver unit is placed within the established wireless communication range, wherein the data packet includes at least a first data point corresponding to a glucose level detected by the sensor at a first time period and at least a second data point corresponding to a glucose level detected by the sensor at a second time period.

13. The method of claim 12, wherein the at least one data packet is transmitted via a radio frequency (RF) communication link.

14. The method of claim 12, further comprising detecting a first temperature related signal corresponding to the glucose level detected by the sensor at the first time period or a second temperature related signal corresponding to the glucose level detected by the sensor at the second time period.

15. The method of claim 14, further comprising transmitting the first or second temperature related signals to the receiver unit when the receiver unit is placed within the established wireless communication range.

16. The method of claim 12, further comprising encoding the at least one data packet prior to transmitting the at least one data packet.

17. The method of claim 16, wherein the at least one data packet is encoded using Reed-Solomon encoding.

18. The method of claim 12, wherein establishing a wireless communication range includes determining a wireless signal strength from the on-body unit and comparing the determined wireless signal strength to a wireless signal strength threshold level.

19. The method of claim 12, wherein the glucose level detected by the sensor at the first time period corresponds to a current glucose level and wherein the glucose level detected by the sensor at the second time period corresponds to a glucose level immediately preceding the current glucose level.

20. The method of claim 12, wherein the on-body unit is configured to operate in a plurality of operating modes.

21. The method of claim 20, wherein the plurality of operating modes includes a disabled mode, a transmission mode, and a sleep mode.