SYSTEMS AND METHODS FOR PROCESSING AND TRANSMITTING SENSOR DATA

• US 20120255875A1
• Filed: 04/06/2012
• Published: 10/11/2012
• Est. Priority Date: 04/08/2011
• Status: Active Grant

• Current Assignee: DexCom Incorporated
• Original Assignee: DexCom Incorporated
• Inventors: Vicente, Kenneth San, Gauba, Indrawati, Waichal, Siddharth, Walker, Andrew
• Granted Patent: US 9,028,410 B2
• Time in Patent Office: Days
• US Class Current: 205/782
• CPC Class Codes: A61B 2560/0238 Means for recording calibration data
• CPC Class Codes: A61B 2562/08 Sensors provided with means for identification, e.g. barcodes or memory chips
• CPC Class Codes: A61B 5/0004 characterised by the type of physiological signal transmitted
• CPC Class Codes: A61B 5/002 Monitoring the patient using a local or closed circuit, e.g. in a room or building A61B5/0017 takes precedence
• CPC Class Codes: A61B 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• CPC Class Codes: A61B 5/1495 Calibrating or testing of in-vivo probes
• CPC Class Codes: G16H 10/40 for data related to laboratory analysis, e.g. patient specimen analysis
• CPC Class Codes: G16H 40/67 for remote operation
• CPC Class Codes: H04B 7/26 at least one of which is mobile
• CPC Class Codes: H04L 63/04 for providing a confidential data exchange among entities communicating through data packet networks
• CPC Class Codes: H04L 63/06 for supporting key management in a packet data network cryptographic mechanisms or cryptographic arrangements for key management H04L9/08
• CPC Class Codes: H04L 63/08 for authentication of entities cryptographic mechanisms or cryptographic arrangements for entity authentication H04L9/32
• CPC Class Codes: H04W 12/041 Key generation or derivation
• CPC Class Codes: H04W 12/06 Authentication
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 4/80 Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
• CPC Class Codes: H04W 76/14 Direct-mode setup
• 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

Systems and methods for continuous measurement of an analyte in a host are provided. The system generally includes a continuous analyte sensor configured to continuously measure a concentration of analyte in a host and a sensor electronics module physically connected to the continuous analyte sensor during sensor use, wherein the sensor electronics module is further configured to directly wirelessly communicate sensor information to one or more display devices. Establishment of communication between devices can involve using a unique identifier associated with the sensor electronics module to authenticate communication. Times tracked at the sensor electronics module and the display module can be at different resolutions, and the different resolutions can be translated to facilitate communication. In addition, the frequency of establishing communication channels between the sensor electronics module and the display devices can vary depending upon whether reference calibration information is being updated.

Claims

1. A method for managing real-time information in a system for monitoring a glucose concentration of a host, the system comprising a sensor electronics module operatively coupled to a continuous glucose sensor, and a display device , the method comprising:

tracking time at a first, predetermined resolution at the sensor electronics module;

generating, using the sensor electronics module, a glucose value;

associating, using the sensor system, a time with the glucose value based on the time at the first resolution;

tracking time at a second, predetermined resolution that is lower than the first resolution at the display device;

translating, using the sensor electronics module, the time associated with the glucose value to the second resolution; and

wirelessly transmitting, using the sensor system, the glucose value and the translated time to the display device.

2. The method of claim 1, wherein the first resolution is 125 milliseconds and the second resolution is 1 second.

3. The method of claim 1, further comprising translating, using the sensor electronics module, time information received from the display device in the second resolution to the first resolution.

4. The method of claim 1, further comprising receiving the translated time at the display device and determining, using the display device, if the translated time is in error by comparing the translated time to a threshold value.

5. The method of claim 4, further comprising transmitting, using the display device, a request to time if the translated time is determined to be in error.

6. A system for monitoring a glucose concentration of a host that manages real-time information, the system comprising a sensor electronics module operatively coupled to a continuous glucose sensor, the sensor electronics module configured to track time at a first, predetermined resolution, generate a glucose value, associate a time with the glucose value based on the time at the first resolution, translate the time associated with the glucose value to a second resolution that is lower than the first resolution, and wirelessly transmit the glucose value and the translated time.

7. The system of claim 6, wherein the first resolution is 125 milliseconds and the second resolution is 1 second.

8. The system of claim 6, further comprising a display device configured to receive the transmitted glucose value and the transmitted translated time, wherein the display device is configured to track time at the second resolution.

9. The system of claim 8, wherein the sensor electronics module is further configured to translate time information received from the display device in the second resolution to the first resolution.

10. The system of claim 8, wherein the display device is further configured to receive the translated time and determine if the translated time is in error by comparing the translated time to a threshold value.

11. The system of claim 10, wherein the display device is further configured to transmit a request to time if the translated time is determined to be in error.