Advanced continuous analyte monitoring system

Patent metadata

Field	Value
Publication number	US-10687740-B2
Application number	US-201916259930-A
Country	US
Kind code	B2
Filing date	Jan 28, 2019
Priority date	Sep 29, 2010
Publication date	Jun 23, 2020
Grant date	Jun 23, 2020

Abstract

The present invention relates generally to systems and methods for processing, transmitting, and displaying data received from continuous analyte sensor, such as a glucose sensor. In some embodiments, the continuous analyte sensor system comprises a sensor electronics module that includes power saving features. One feature includes a low power measurement circuit that can be switched between a measurement mode and a low power mode, in which charging circuitry continues to apply power to electrodes of a sensor during the low power mode. In addition, the sensor electronics module can be switched between in a low power storage mode higher power operational mode via a switch. The switch can include a reed switch or optical switch, for example. A validation routine can also be implemented to ensure an interrupt signal sent from the switch is valid. The continuous analyte sensor can be physically connected to a sensor electronics module, which is in direct wireless communication with a plurality of different display devices.

First claim

What is claimed is:

1. A system for continuous measurement of an analyte in a host, the system comprising:
an electrochemical continuous analyte sensor configured for transcutaneous implantation in the host for measuring analyte values; and
a sensor electronics module coupled to the continuous analyte sensor, the sensor electronics module comprising a switch configured to switch the sensor electronics module between a first low power mode and a second higher power mode,
wherein the switch is configured to switch from the first low power mode to the second higher power mode when the sensor electronics module detects a signal output of the electrochemical continuous analyte sensor above a predetermined threshold, wherein the predetermined threshold is selected based on values that would indicate the sensor electronics module is not operatively connected to the electrochemical continuous analyte sensor and/or the electrochemical continuous analyte sensor is not implanted in the host,
wherein the detecting comprises the sensor electronics module performing a sensor measurement in the first low power mode.

2. The system of claim 1 , wherein power consumption due to wireless transmission and/or receipt of data has been turned off in the first low power mode.

3. The system of claim 1 , wherein the system further comprises a mounting unit configured to hold a portion of the continuous analyte sensor, wherein the electronics module is configured to couple to the mounting unit.

4. The system of claim 1 , wherein the sensor electronics module is configured to periodically perform sensor measurements in the first low power mode.

5. The system of claim 1 , wherein a telemetry module of the sensor electronics module has been turned off during the first low power mode.

6. The system of claim 5 , wherein the telemetry module is for transmitting data between the sensor electronics module and one or more display devices.

7. The system of claim 6 , comprising the one or more display devices.

8. The system of claim 1 , configured so that if the sensor electronics module measures a sensor reading below the predetermined threshold, then the sensor electronics module remains in the low power mode.

9. A method of increasing a useful life of a sensor electronics module coupled to an electrochemical continuous analyte sensor configured for transcutaneous implantation in a host for measuring analyte values, the method comprising:
entering the sensor electronics module into a low power mode, thereby extending the useful life of the sensor electronics module;
performing a sensor measurement in the low power mode; and
causing the sensor electronics module to enter a higher power consuming, operational mode when a sensor reading of the electrochemical continuous analyte sensor above a predetermined threshold is detected, wherein the predetermined threshold is selected based on values that would indicate the sensor electronics module is not operatively connected to the electrochemical continuous analyte sensor and/or the electrochemical continuous sensor is not implanted in the host.

10. The method of claim 9 , comprising turning off power consumption by the sensor electronics module due to wireless transmission and/or receipt of data in the low power mode.

11. The method of claim 9 , comprising periodically performing a sensor measurement in the low power mode.

12. The method of claim 9 , comprising turning off a telemetry module in the low power mode.

13. The method of claim 9 , wherein if the sensor electronics module measures a sensor reading of the continuous analyte sensor below the predetermined threshold, then the sensor electronics module remains in the low power mode.

Assignees

• Dexcom Inc

Inventors

• Bohm Sebastian
• Dervaes Mark
• Johnson Eric
• Kamath Apurv Ullas
• Larvenz Shawn
• Leach Jacob S
• Lieu Phong
• Mahalingam Aarthi
• Miller Tom
• Neale Paul V
• Pryor Jack
• Peyser Thomas A
• Rong Daiting
• San Vicente Kenneth
• Shariati Mohammad Ali
• Simpson Peter C
• Wightlin Matthew

Classifications

• A61B5/14532 Primary

  for measuring glucose, e.g. by tissue impedance measurement · CPC title

• A61B2560/0209

  adapted for power saving · CPC title

• A61B2562/02

  Details of sensors specially adapted for in-vivo measurements · CPC title

• A61B5/1468

  using chemical or electrochemical methods, e.g. by polarographic means · CPC title

• A61B5/1451

  for interstitial fluid · CPC title