CONTINUOUS ANALYTE MONITORING SYSTEM POWER CONSERVATION

• US 20170172473A1
• Filed: 12/05/2016
• Published: 06/22/2017
• Est. Priority Date: 12/21/2015
• Status: Active Grant

• Current Assignee: DexCom Incorporated
• Original Assignee: DexCom Incorporated
• Inventors: Wedekind, Jeffrey R., Hernandez-Rosas, Jose Hector, McDaniel, Zebediah L., Lieu, Pauline T., Burnette, Douglas William, Dervaes, Mark, Grucela, Minda McDorman
• Granted Patent: US 10,231,655 B2
• Time in Patent Office: Days
• CPC Class Codes: A61B 2560/0209 adapted for power saving
• CPC Class Codes: A61B 2560/0242 adapted to measure environmental factors, e.g. temperature, pollution
• CPC Class Codes: A61B 2562/08 Sensors provided with means for identification, e.g. barcodes or memory chips
• CPC Class Codes: A61B 2562/164 the sensor is mounted in or on a conformable substrate or carrier
• 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 5/0031 Implanted circuitry
• 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 40/40 for the management of medical equipment or devices, e.g. scheduling maintenance or upgrades
• CPC Class Codes: G16H 40/63 for local operation
• CPC Class Codes: G16H 40/67 for remote operation
• 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

Disclosed are devices, systems and methods for power management in an electronics unit of a sensor device, e.g., such as in a continuous analyte sensor system. In some example embodiments, there is provided a method that includes monitoring, by a controller of a sensor electronics module, counts associated with signals received from a sensor device for a first period of time. The method also includes comparing a number of received counts with one or more benchmarked count thresholds, and determining whether to initiate an operational mode of the sensor electronics module based on the comparison. Related systems, methods, and articles of manufacture are also described.

Claims

1. An apparatus, comprising:

an analyte sensor;

a sensor electronics module operatively connected to the analyte sensor and adapted to receive analyte sensor data from the analyte sensor; and

an authentication circuit authenticating one or more batteries installed in the sensor electronics module.

2. The apparatus of claim 1, wherein the authentication circuit is operable to instruct a processor of the sensor electronics module to read authentication data associated with the one or more batteries.

3. The apparatus of claim 2, wherein the authentication data comprises at least one of an identification code associated with each of the one or more batteries and a cyclic redundancy check value associated with each of the one or more batteries.

4. The apparatus of claim 1, wherein the one or more batteries temporarily power the sensor electronics module during authentication of the one or more batteries by the authentication circuit.

5. The apparatus of claim 1, wherein operation of the sensor electronics module is inhibited upon a failed authentication regarding any of the one or more batteries.

6. The apparatus of claim 1, wherein an operational mode of the sensor electronics module is selected depending on the authentication of the one or more batteries.

7. The apparatus of claim 1, further comprising a sensor adapted to detect high current conditions within the sensor electronics module.

8. An apparatus, comprising:

an analyte sensor;

a sensor electronics module operatively connected to the analyte sensor and adapted to receive analyte sensor data from the analyte sensor; and

a temperature sensor adapted to determine at least one of an operating temperature of the sensor electronics module and an ambient temperature about the sensor electronics module.

9. The apparatus of claim 8, wherein the apparatus is operable to adjust an estimation of remaining battery life of at least one battery powering the sensor electronics module based upon one of a temperature-battery power skew table and a temperature-battery power skew correction mechanism.

10. A computer-implemented method for estimating battery life, comprising:

measuring a current power level of a battery powering an analyte sensor system;

predicting a remaining useful life of the battery based upon the measured current power level of the battery and an assumed usage of the analyte sensor system;

determining whether the predicted remaining useful life of the battery is less than a predetermined time; and

adjusting at least one of advertising and communication parameters for effectuating communications between the analyte sensor system and one or more display devices.

11. The computer-implemented method of claim 10, further comprising transmitting a notification to at least one of the one or more display devices upon a determination that the predicted remaining useful life of the battery is less than the predetermined time.

12. The computer-implemented method of claim 10, further comprising delaying the communications between the analyte sensor system and the one or more display devices upon a determination that a current trend of analyte measurements received by the analyte sensor system is indicative that a user of the analyte sensor system is in a clinically safe zone.

13. The computer-implemented method of claim 10, further comprising at least one of transmitting an alarm indicating that the battery requires replacement upon a determination that a current trend of analyte measurements received by the analyte sensor system is indicative that a user of the analyte sensor system is in a clinically unsafe zone and upon a determination that the predicted remaining useful life of the battery is less than the predetermined time.

14. The computer-implemented method of claim 10, further comprising handing off at least one of advertising for communications between the analyte sensor system and the one or more display devices and forwarding of analyte sensor information to the one or more display devices to one of the one or more display devices upon a determination that a current trend of analyte measurements received by the analyte sensor system is indicative that a user of the analyte sensor system is in a clinically unsafe zone and upon a determination that the predicted remaining useful life of the battery is less than the predetermined time.