Systems and methods for processing and transmitting sensor data

• US 9,681,807 B2
• Filed: 12/01/2015
• Issued: 06/20/2017
• Est. Priority Date: 03/14/2013
• Status: Active Grant

• Current Assignee: DexCom Incorporated
• Original Assignee: DexCom Incorporated
• Inventors: Simpson, Peter C., Miller, Thomas, Dervaes, Mark, Lieu, Phong, Larvenz, Shawn, Leach, Jacob S., Bohm, Sebastian
• Primary Examiner(s): Benlagsir, Amine
• Application Number:
  US14/956,105
• Publication Number:
  US 20160081551A1
• Time in Patent Office: 567 Days
• Field of Search: 34087007, 34087001
• CPC Class Codes: A61B 2560/0209 adapted for power saving
• 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 5/0015 characterised by features of the telemetry system
• 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 5/14865 invasive, e.g. introduced into the body by a catheter or needle or using implanted sensors
• CPC Class Codes: A61B 5/6849 in combination with a needle set
• CPC Class Codes: A61B 5/742 using visual displays A61B5/339 takes precedence
• CPC Class Codes: A61B 5/7475 User input or interface means, e.g. keyboard, pointing device, joystick
• CPC Class Codes: G16H 10/60 for patient-specific data, e.g. for electronic patient records
• CPC Class Codes: G16H 20/17 delivered via infusion or injection
• CPC Class Codes: G16H 30/20 for handling medical images, e.g. DICOM, HL7 or PACS
• CPC Class Codes: G16H 40/20 for the management or administration of healthcare resources or facilities, e.g. managing hospital staff or surgery rooms
• CPC Class Codes: G16H 40/40 for the management of medical equipment or devices, e.g. scheduling maintenance or upgrades
• CPC Class Codes: G16H 40/67 for remote operation

Abstract

Systems and methods for processing, transmitting and displaying data received from an analyte sensor, such as a glucose sensor, are disclosed. In an embodiment, 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 sensor-related information comprises: activating a transceiver of a first communication device associated with an analyte sensor at a first time; and establishing a two-way communication channel with the second communication device; wherein the activating comprises waking the transceiver from a low power sleep mode using a forced wakeup from the second communication device.

Claims

1. A method for transmitting data between devices of an analyte monitoring system, the method comprising:

generating sensor data using a sensor electronics module electrically connected to a continuous analyte sensor during a first power mode;

establishing a two-way communication channel between the sensor electronics module and a display device, and the sensor electronics module transmitting during the first power mode;

transitioning to a second power mode, wherein the second power mode comprises the sensor electronics module being at a lower power than at the first power mode;

providing a sleep pulse signal with a first current value to a sleep current circuit of the sensor electronics module upon the transition to the second power mode from the first power mode; and

detecting, by the sleep current circuit during the second power mode, a resultant current value that is the summation of the first current value of the sleep pulse signal and a second current value of a sleep current of the sensor electronics module, wherein the second current value of the sleep current is generated based on a difference between the resultant current value and the first current value of the sleep pulse signal that is provided to the sleep current circuit,

comparing the resultant current value with a predetermined threshold value during the second power mode,

verifying whether an error associated with a normal battery drain of the sensor electronics module has occurred during the second power mode, wherein determining the error has occurred is based on said comparing indicating that the resultant current value is larger than the predetermined threshold value,

transitioning to the first power mode from the second power mode, prior to the determination of the occurrence of the error in the sensor electronics module.

2. The method of claim 1, further comprising storing information related to the error in a memory of the sensor electronics module.

3. The method of claim 2, further including sending an error message by the sensor electronics module to the display device upon the determination that the error has occurred.

4. A system for monitoring analyte concentration data of a host, comprising:

a continuous analyte sensor;

a sensor electronics module configured to electrically couple to the continuous analyte sensor and generate analyte sensor data using the continuous analyte sensor during a first power mode;

a display device configured to wirelessly receive information indicative of the analyte sensor data from the sensor electronics module,

wherein the sensor electronics module and the display device are configured to establish a two-way communication channel between the sensor electronics module and the display device,

wherein the sensor electronics module transmit during the first power mode, and

wherein the sensor electronics module transitions to a second power mode, wherein the second power mode is lower in power than the first power mode; and

a sleep current circuit configured to receive a sleep current signal with a first current value upon the transition to the second power mode from the first power mode, and further configured to detect during the second power mode, a resultant current value that is the summation of the first current value of the sleep current signal and a second current value of a sleep current of the sensor electronics module, wherein the second current value of the sleep current is generated based on a difference between the resultant current value and the first current value of the sleep current signal that is provided to the sleep current circuit,

compare the resultant current value with a predetermined threshold value during the second power mode,

verify whether an error associated with a normal battery drain of the sensor electronics module has occurred during the second power mode, wherein determining the error has occurred is based on said compare indicating that the resultant current value is larger than the predetermined threshold value,

transition to the first power mode from the second power mode, prior to the determination of the occurrence of the error in the sensor electronics module.

5. The system of claim 4, wherein the sensor electronics module is further configured to store information related to the error in a memory.

6. The system of claim 5, wherein the sensor electronics module is further configured to send an error message upon the determination that the error has occurred.