Continuous Glucose Monitoring System and Methods of Use

• US 20140121477A1
• Filed: 01/06/2014
• Published: 05/01/2014
• Est. Priority Date: 12/31/2002
• Status: Active Grant

• Current Assignee: Abbott Diabetes Care Incorporated (Abbott Laboratories Incorporated)
• Original Assignee: Abbott Diabetes Care Incorporated (Abbott Laboratories Incorporated)
• Inventors: Jin, Robert Y., Sloan, Mark Kent
• Granted Patent: US 9,962,091 B2
• Time in Patent Office: Days
• US Class Current: 600/301
• 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. An analyte monitoring system, comprising:

a sensor configured to generate signals corresponding to monitored analyte level in interstitial fluid; and

sensor electronics operatively coupled to the sensor and configured to process the generated signals to form data packets associated with the generated signals from the sensor, and a temperature sensor configured to monitor temperature associated with the sensor, wherein the monitored temperature is used to adjust the processed generated signals;

wherein the sensor electronics includes programming to communicate the data packets with each data communication, the data packets including a current data point that corresponds to an analyte level of a current time period and at least one previous data point that corresponds to at least one analyte level of at least one previous time period, and further

wherein if the current data point is not successfully received, at a subsequent data communication, the current data point and the at least one previous data point are re-transmitted with a new current data point.

2. The system of claim 1, wherein the at least one previous data point includes two consecutive data points that corresponds to the monitored analyte level of two consecutive previous time periods, one of the two consecutive previous time periods immediately preceding the current time period.

3. The system of claim 1, wherein the current data point is received and ascertained from the subsequent data communication.

4. The system of claim 1, wherein the sensor electronics is configured to transition from a sleep mode to a communication mode upon activation.

5. The system of claim 1, further including a receiver unit configured for receiving the data packets over a paired communication link from the sensor electronics.

6. The system of claim 5, wherein the receiver unit is configured to establish the paired communication link with the sensor electronics prior to receiving the data packets from the sensor electronics.

7. The system of claim 5, wherein the sensor electronics is configured to encode the data packets to generate encoded data packets, the sensor electronics further configured to communicate the encoded data packets to the receiver unit.

8. The system of claim 5, wherein the receiver unit is configured to decode encoded signals received from the sensor electronics.

9. The system of claim 1, wherein the data packets includes data points corresponding to the monitored analyte level over a predetermined time period.

10. The system of claim 5, wherein the receiver unit is configured to receive one or more data packets, and includes an output unit for outputting data related to the received one or more data packets, wherein the data is related to one or more glucose levels.

11. An apparatus, comprising:

one or more processors; and

a memory operatively coupled to the one or more processors, the memory for storing instructions which, when executed by the one or more processors, causes the one or more processors to process signals generated from an analyte sensor having a portion in fluid contact with interstitial fluid, to form data packets associated with the generated signals from the analyte sensor, to communicate the data packets with each data communication, the data packets including a current data point that corresponds to an analyte level of a current time period and at least one previous data point that corresponds to at least one analyte level of at least one previous time period, and if the current data point is not successfully received, at a subsequent data communication, to re-transmit the current data point and the at least one previous data point with a new current data point.

12. The apparatus of claim 11, wherein the at least one previous data point includes two consecutive data points that corresponds to monitored analyte level of two consecutive previous time periods, one of the two consecutive previous time periods immediately preceding the current time period.

13. The apparatus of claim 11, wherein the current data point is received and ascertained from the subsequent data communication.

14. The apparatus of claim 11, wherein the one or more processors is configured to transition from a sleep mode to a communication mode upon activation.

15. The apparatus of claim 11, wherein the one or more processors is configured to encode the data packets to generate encoded data packets for the data communication.

16. The apparatus of claim 11, wherein the data packets includes data points corresponding to monitored analyte level over a predetermined time period.

17. The apparatus of claim 11, further including a temperature sensor operatively coupled to the one or more processors and configured to monitor temperature associated with the analyte sensor, wherein the monitored temperature is used to adjust the processed generated signals.

18. The apparatus of claim 17, wherein the temperature sensor detects temperature level of an insertion site of the analyte sensor to obtain a temperature reading, wherein the one or more processors uses the temperature reading to adjust the processed generated signals.