SYSTEMS AND METHODS FOR PROCESSING AND TRANSMITTING SENSOR DATA

• US 20130078912A1
• Filed: 09/21/2012
• Published: 03/28/2013
• Est. Priority Date: 09/23/2011
• Status: Active Grant

• Current Assignee: DexCom Incorporated
• Original Assignee: DexCom Incorporated
• Inventors: San Vicente, Kenneth, Hampapuram, Hari, Reihman, Eli, Grubstein, Katherine Yerre, Leach, Jacob S.
• Granted Patent: US 9,974,018 B2
• Time in Patent Office: Days
• US Class Current: 455/39
• CPC Class Codes: A61B 5/0004 characterised by the type of physiological signal transmitted
• CPC Class Codes: A61B 5/0015 characterised by features of the telemetry system
• CPC Class Codes: A61B 5/0026 characterised by the transmission medium
• CPC Class Codes: A61B 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• CPC Class Codes: G16H 40/63 for local operation
• CPC Class Codes: G16H 40/67 for remote operation
• CPC Class Codes: G16Z 99/00 Subject matter not provided for in other main groups of this subclass
• CPC Class Codes: H04L 67/12 specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
• CPC Class Codes: H04L 67/62 Establishing a time schedule for servicing the requests
• CPC Class Codes: H04W 12/06 Authentication
• 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 52/0209 in terminal devices terminal devices per se H04W88/02
• CPC Class Codes: H04W 52/0219 where the power saving management affects multiple terminals
• CPC Class Codes: H04W 76/10 Connection setup
• CPC Class Codes: H04W 76/14 Direct-mode setup
• CPC Class Codes: H04W 76/25 Maintenance of established connections
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks
• CPC Class Codes: Y02A 90/10 Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Systems and methods for processing, transmitting and displaying data received from an analyte sensor, such as a glucose sensor, are provided. The data can be displayed on a hand-held display device having a display such as a key fob device including a user interface, such as an LCD and one or more buttons 604 allows a user to view data, and a physical connector, such as USB port.

Claims

1. A method for transmitting data between a first communication device associated with an analyte sensor and a second communication device configured to provide user access to analyte values and/or information derived from analyte values, comprising:

activating a transceiver of a first communication device associated with an analyte sensor at a first time;

establishing a two-way communication channel with the second communication device using an authentication scheme;

sending analyte sensor data to the second communication device using the two-way communication channel;

deactivating the transceiver of the first communication device at a second time; and

periodically repeating the activating, establishing, sending and deactivating, wherein a difference between the first time and the second time is less than or equal to one minute, and wherein the periodic repeating is performed at least once every 30 minutes.

2. The method of claim 1, wherein activating comprises supplying power to the transceiver, and wherein deactivating comprises powering down the transceiver.

3. The method of claim 1, wherein activating comprises waking the transceiver from a low power sleep mode, and wherein deactivating the transceiver comprises placing the transceiver into a lower power sleep mode.

4. The method of claim 1, further comprising closing the two-way communication channel before deactivating the transceiver.

5. The method of claim 1, wherein the difference between the first time and second time corresponds to a transmission time window, and wherein the analyte sensor data corresponds to a new glucose measurement obtained prior to a beginning of the time window, and wherein beginnings of successive time windows are separated by an update time interval.

6. The method of claim 1, further comprising periodically measuring an analyte sensor value before each of the periodic repeating the activating, establishing, sending, and deactivating.

7. The method of claim 6, wherein the analyte sensor value comprises a glucose concentration.

8. A system for monitoring an analyte level of a host, the system configured to perform the method of claim 1, wherein the system comprises a sensor electronics module incorporating a transceiver, the sensor electronics module configured to electronically couple to an analyte sensor and generate an analyte data stream using the analyte sensor.

9. A method for authorizing analyte sensor data exchange between a first communication device associated with an analyte sensor and a second communication device configured to provide user access to analyte values and/or information derived from analyte values, comprising:

sending a challenge value from a first communication device associated with an analyte sensor to a second communication device;

generating a first hash value in the second communication device using, at least in part, one or more of the challenge value, an identifier of the first communication device, or a key value;

sending the first hash value from the second communication device to the first communication device;

generating, using the first communication device, a second hash value and a third hash value;

comparing, using the first communication device, the second hash value and the third hash values to the first hash value; and

sending analyte sensor data only if at least one of the second hash value or the third hash values matches the first hash value.

10. The method of claim 9, further comprising determining a type of the second communication device based on a match between the first hash value and the second hash value or a match between the first hash value and the third hash value.

11. The method of claim 9, wherein the key value is a first value if the second communication device is of a first type, and wherein the key value is a second value if the second communication device is of a second type.

12. The method of claim 11, wherein the type of second device corresponds to one of a primary device or a secondary device, wherein the primary device is configured to communicate analyte calibration data to the first communication device, and wherein the first communication device is configured to reject analyte calibration data received from a secondary communication device.

13. The method of claim 9, wherein the first hash value is generated using a display identifier.

14. The method of claim 10, wherein sending analyte sensor data comprises sending analyte sensor data based at least in part on the type of the second communication device.

15. A system for monitoring an analyte level of a host, the system configured to perform the method of claim 9, wherein a first communication device comprises a sensor electronics module, and wherein the sensor electronics module is configured to electronically couple to an analyte sensor and to generate an analyte data stream using the analyte sensor.

16. A method for transmitting data between a first communication device associated with an analyte sensor and one or more second communication devices configured to provide user access to analyte values and/or information derived from analyte values, comprising:

receiving a request from a second communication device of the one or more second communication devices to establish a channel for receiving analyte sensor data from the first communication device during a transmission window; and

establishing a communication channel between the first communication device and the second communication device if a number of communication devices that previously received analyte sensor data from the first communication device during the transmission window is below a threshold.

17. The method of claim 16, wherein the second communication device comprises a secondary communication device.

18. The method of claim 16, further comprising:

determining whether the second communication device is a primary communication device; and

establishing, if the second communication device is a primary communication device, a communication channel with the second communication device even if a number of communication devices that previously received analyte sensor data during the transmission window is equal to or greater than the threshold.

19. A system for monitoring an analyte level of a host, the system configured to perform the method of claim 16, wherein a first communication device comprises a sensor electronics module, the sensor electronics module configured to electronically couple to an analyte sensor and to generate an analyte data stream using the analyte sensor.