SYSTEMS AND METHODS FOR A CONTINUOUS MONITORING OF ANALYTE VALUES

• US 20150123813A1
• Filed: 11/05/2014
• Published: 05/07/2015
• Est. Priority Date: 11/07/2013
• Status: Active Grant

• Current Assignee: DexCom Incorporated
• Original Assignee: DexCom Incorporated
• Inventors: Hernandez-Rosas, Jose Hector, Larvenz, Shawn, Dervaes, Mark, Gauba, Indrawati, Mensinger, Michael Robert, Cohen, Eric, Smith, Brian Christopher, Valdes, Jorge, Leach, Jacob S.
• Granted Patent: US 9,974,470 B2
• Time in Patent Office: Days
• US Class Current: 340/870.02
• CPC Class Codes: A61B 5/0004 characterised by the type of physiological signal transmitted
• 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 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• CPC Class Codes: A61B 5/742 using visual displays A61B5/339 takes precedence
• CPC Class Codes: G16H 20/17 delivered via infusion or injection
• CPC Class Codes: G16H 40/40 for the management of medical equipment or devices, e.g. scheduling maintenance or upgrades
• CPC Class Codes: H04B 7/26 at least one of which is mobile
• 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: H04Q 2209/40 using a wireless architecture
• CPC Class Codes: H04Q 2209/50 using a mobile data collecting device, e.g. walk by or drive by
• CPC Class Codes: H04Q 9/00 Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
• CPC Class Codes: H04Q 9/14 Calling by using pulses
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 76/10 Connection setup
• CPC Class Codes: H04W 76/14 Direct-mode setup
• CPC Class Codes: H04W 76/30 Connection release
• CPC Class Codes: H04W 76/34 Selective release of ongoing connections
• 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 a continuous monitoring of analyte values received from an analyte sensor system are provided. One method for a wireless data communication between an analyte sensor system and a mobile device involves storing identification information associated with a transceiver of the analyte sensor system, the identification information entered by a user of the mobile device via a custom application running on the mobile device; causing the custom application to enter a background mode; searching for advertisement signals; receiving an advertisement signal from the transceiver; authenticating the transceiver based on the identification information; prompting the user to bring the custom application to a foreground mode; causing the custom application to request a confirmation from the user that a data connection with the transceiver is desired; receiving the confirmation from the user; and completing the data connection with the transceiver.

Claims

1. A method for a wireless data communication between an analyte sensor system and a mobile device capable of wirelessly receiving analyte values from the analyte sensor system, the method comprising:

storing identification information associated with a transceiver of the analyte sensor system, the identification information entered by a user of the mobile device via a custom application running on the mobile device;

causing the custom application to enter a background mode;

searching for advertisement signals;

receiving an advertisement signal from the transceiver;

authenticating the transceiver based on the identification information;

prompting the user to bring the custom application to a foreground mode;

causing the custom application to request a confirmation from the user that a data connection with the transceiver is desired;

receiving the confirmation from the user; and

completing the data connection with the transceiver.

2. The method of claim 1, further comprising:

receiving an analyte value from the transceiver;

terminating the data connection with the transceiver;

entering an inactive mode;

exiting the inactive mode after a predetermined time; and

searching for advertisement signal from the transceiver.

3. The method of claim 1, wherein the authenticating step comprises:

requesting a challenge value from the transceiver;

receiving the challenge value from the transceiver;

generating a hash value from the challenge value and the identification information;

transmitting the hash value to the transceiver; and

receiving a confirmation indicating a successful authentication from the transceiver.

4. The method of claim 1, further comprising:

determining that an excessive memory is being used by the custom application;

causing the custom application to enter a suspended state;

determining a next scheduled time at which the custom application is expected to search for advertisement signals from the transceiver; and

causing the custom application to exit the suspended state prior to the next scheduled time.

5. A mobile device configured for a wireless data communication with an analyte sensor system, the device comprising:

a user interface;

a radio unit for transmitting and receiving wireless signals;

a memory for storing identification information associated with one or more transceivers and a custom application configured to interact with a user of the mobile device via the user interface; and

a processor operatively coupled to the user interface, the radio unit, and the memory and configured to;

cause the custom application to enter a background mode,

cause the radio unit to search for advertisement signals,

perform an authentication procedure with a transceiver of the analyte sensor system based on user-entered identification information associated with the transceiver if an advertisement signal is received from the transceiver,

issue a first notification to the user to bring the custom application into a foreground mode,

cause the custom application to issue a second notification requesting the user for a confirmation that a data connection with the transceiver is desired, and

complete the data connection with the transceiver if the confirmation is received.

6. The mobile device of claim 5, wherein the analyte sensor system is a continuous glucose sensor system.

7. The mobile device of claim 5, wherein the user interface comprises a voice user interface.

8. The mobile device of claim 5, wherein the user interface comprises a touch screen display.

9. The mobile device of claim 8, wherein the first notification is a pop-up menu displayed on the touch screen display.

10. The mobile device of claim 5, wherein the wireless data communication employs a communication protocol designed for a short distance and low-power wireless communication.

11. The mobile device of claim 5, wherein the processor is further configured to:

determine that an excessive memory space has been used by the custom application,

cause the custom application to enter a suspended state,

cause the custom application to exit the suspended state prior to a scheduled time at which the mobile device is expected to search for a next advertisement signal from the transceiver, and

cause the custom application to search for the next advertisement signal in a background mode.

12. The mobile device of claim 5, wherein the processor is further configured to:

determine that an excessive memory is being used by the custom application,

cause the custom application to enter a suspended state,

determine a next scheduled time at which the transceiver is expected to begin transmitting a series of advertisement signals,

cause the custom application to exit the suspended state prior to the next scheduled time, and

cause the radio unit to search for the advertisement signals.

13. The mobile device of claim 5, wherein the processor is further configured to:

determine that an excessive memory is being used by the custom application,

cause the custom application to enter a suspended state,

determine a next scheduled time at which the transceiver is expected to begin transmitting a series of advertisement signals, and

cause the radio to search for the advertisement signals at the next scheduled time while the custom application is still in the suspended state.

14. A method for a wireless data communication between an analyte sensor system and a mobile device capable of wirelessly receiving analyte values from the analyte sensor system, the method comprising:

transmitting a first series of advertisement signals beginning at a first time;

receiving a data connection request from a mobile device at a second time;

establishing a data connection with the mobile device;

transmitting a connection interval indicative of a difference between the second time and the first time to the mobile device;

transmitting an analyte value;

terminating the data connection with the mobile device; and

causing a transceiver of the analyte sensor system to enter a sleep state.

15. The method of claim 14 further comprising:

causing the transceiver to exit the sleep mode after a predetermined time; and

transmitting a second series of advertisement signals.

16. The method of claim 14, wherein the predetermined time is between about 200 and 400 seconds.

17. The method of claim 14, wherein the analyte value is based on an analyte measurement taken while the transceiver was in a previous sleep mode.

18. A method for a wireless data communication between an analyte sensor system and a mobile device capable of wirelessly receiving analyte values from the analyte sensor system, the method comprising:

searching for advertisement signals;

receiving an advertisement signal from a transceiver of the analyte sensor system;

transmitting a data connection request to the transceiver;

establishing a data connection with the transceiver if the data connection request is granted;

receiving a connection interval indicative of a difference between a first time at which the transceiver started to transmit a series of advertisement signals and a second time at which the transceiver received the data connection request from the mobile device;

receiving an analyte value from the transceiver;

terminating the data connection with the transceiver, thereby causing the transceiver to enter a sleep mode;

entering an inactive mode during which the mobile device does not communicate with the transceiver;

calculating an exit time at which the mobile device is to exit the inactive mode based at least partly on the connection interval;

exiting the inactive mode at the exit time; and

search for advertisement signals after exiting the inactive mode.

19. The method of claim 18, wherein the analyte value is based on an analyte measurement taken while the transceiver was in a previous sleep mode.

20. The method of claim 18, wherein the exit time is given by:

current time+update interval−

the connection interval−

notification delay−

safeguard,

further wherein the update interval is a time duration between two consecutive wireless communication sessions between the transceiver and the mobile device.