Systems, devices, and methods with duration-based adjustment of sensor data

Patent metadata

Field	Value
Publication number	US-12575763-B2
Application number	US-202217704824-A
Country	US
Kind code	B2
Filing date	Mar 25, 2022
Priority date	May 3, 2017
Publication date	Mar 17, 2026
Grant date	Mar 17, 2026

Abstract

Embodiments that compensate for changes to sensor response characteristics (e.g., sensitivity) due to time durations are disclosed. The time durations can be the amount of time the sensor is in a post-manufacture packaged state prior to use, or the amount of time the sensor is in use. Sensor response changes due to other variables can also be compensated for.

First claim

What is claimed is:

1 . A glucose monitoring sensor control device comprising:
a glucose sensor configured to detect glucose levels in a bodily fluid of a user, wherein the glucose sensor is configured to be positioned in the user such that when operably positioned, a first portion of the glucose sensor is configured to reside above a skin surface of the user, and a second portion of the glucose sensor is configured to reside below the skin surface and in contact with the bodily fluid of the user; processing circuitry electrically and communicatively coupled with the glucose sensor prior to the glucose sensor being positioned in the user; and a memory electrically and communicatively coupled with the processing circuitry, the memory comprising instructions that, when executed by the processing circuitry, cause the processing circuitry to:
collect data indicative of environmental exposure of the glucose sensor during a duration of time before use of the sensor control device by the user;
determine a wear duration of the glucose sensor, wherein the wear duration corresponds to a duration of time after use of the sensor control device by the user;
collect, from the glucose sensor, sensor data including data indicative of a glucose level in the bodily fluid;
algorithmically adjust a calibration parameter of the glucose sensor with: a first function including a first adjustment parameter and a value representative of the wear duration, and one or more additional functions including a second adjustment parameter and a value representative of the environmental exposure of the glucose sensor during the duration of time before use of the sensor control device by the user;
algorithmically process the sensor data using the adjusted calibration parameter and to determine the glucose level in the bodily fluid; and
transmit the determined glucose level to a reader device communicatively coupled with the sensor control device and configured to display the determined glucose level.

2 . The glucose monitoring sensor control device of claim 1 , wherein the first function including the first adjustment parameter and the value representative of the wear duration comprises a first adjustment function for values of the value representative of the wear duration below a threshold value and a second adjustment function for values of the value representative of the wear duration above the threshold value.

3 . The glucose monitoring sensor control device of claim 1 , wherein the first adjustment parameter and second adjustment parameter are pre-determined and provided to the memory prior to the use of the sensor control device by the user.

4 . The glucose monitoring sensor control device of claim 1 , wherein the first adjustment parameter and second adjustment parameter are pre-determined in manufacture of the glucose sensor.

5 . The glucose monitoring sensor control device of claim 1 , wherein the instructions to determine the wear duration further cause the processing circuitry to calculate a difference between a supplied present time and a wear start time corresponding to a beginning of the duration of time after use of the sensor control device by the user.

6 . The glucose monitoring sensor control device of claim 1 , wherein the instructions to determine the wear duration further cause the processing circuitry to incorporate a wait period to the wear duration such that the wear duration corresponds to a duration of time less than the entire time after the use of the sensor control device by the user.

7 . The glucose monitoring sensor control device of claim 1 , wherein the memory further comprises instructions that, when executed by the processing circuitry cause the processing circuitry to:
detect that the glucose sensor has been positioned in the user, wherein the use of the sensor control device by the user corresponds to the detection that the glucose sensor has been positioned in the user.

8 . The glucose monitoring sensor control device of claim 1 , wherein the memory further comprises instructions that, when executed by the processing circuitry cause the processing circuitry to:
receive an electrical signal from the glucose sensor; and detect the use of the sensor control device by the user based on receiving the electrical signal.

9 . The glucose monitoring sensor control device of claim 1 , wherein the use of the sensor control device by the user comprises activation of the sensor control device by an insertion device configured to position the second portion of the glucose sensor below the skin surface and in contact with the bodily fluid of the user.

10 . The glucose monitoring sensor control device of claim 1 , wherein the memory further comprises instructions that, when executed by the processing circuitry cause the processing circuitry to:
determine a shelf duration of the glucose sensor corresponding to the duration of time before use of the sensor control device by the user; and algorithmically adjust the calibration parameter of the glucose sensor further with a third function including a third adjustment parameter and a value representative of the shelf duration.

11 . The glucose monitoring sensor control device of claim 10 , wherein the shelf duration corresponds to a duration of time after the glucose sensor has completed manufacturing.

12 . The glucose monitoring sensor control device of claim 10 , wherein the shelf duration corresponds to a duration of time after the glucose sensor has completed testing.

13 . The glucose monitoring sensor control device of claim 10 , wherein the shelf duration corresponds to a duration of time after the glucose sensor has completed assembly into the sensor control device.

14 . The glucose monitoring sensor control device of claim 10 , wherein the shelf duration corresponds to a duration of time after the glucose sensor has completed packaging.

15 . The glucose monitoring sensor control device of claim 1 , wherein the wear duration further corresponds to a duration of time after sensor data is first collected from the glucose sensor.

16 . The glucose monitoring sensor control device of claim 1 , wherein the wear duration further corresponds to a duration of time after the glucose level is first transmitted to the reader device.

17 . The glucose monitoring sensor control device of claim 1 , wherein:
the data indicative of the environmental exposure of the glucose sensor comprises temperature data representative of a plurality of temperatures to which the glucose sensor was subjected during the duration of time before use of the sensor control device by the user; and the value representative of the environmental exposure of the glucose sensor comprises a value representative of the plurality of temperatures.

18 . The glucose monitoring sensor control device of claim 1 , wherein:
the data indicative of the environmental exposure of the glucose sensor comprises an aggregate temperature data value representative of aggregated thermal exposure of the glucose sensor during the duration of time before use of the sensor control device by the user; and the value representative of the environmental exposure of the glucose sensor comprises a value representative of the aggregate temperature data.

19 . The glucose monitoring sensor control device of claim 1 , wherein the data indicative of the environmental exposure of the glucose sensor is indicative of exposure of the glucose sensor to humidity during the duration of time before use of the sensor control device b

Assignees

• Abbott Diabetes Care Inc

Inventors

• Budiman Erwin S
• Bhogal Claire
• Scott Steven
• Taub Marc B

Classifications

• A61B5/6849

  in combination with a needle set · CPC title

• A61B5/6833

  Adhesive patches · CPC title

• A61B5/14503

  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 title

• A61B5/0022

  Monitoring a patient using a global network, e.g. telephone networks, internet · CPC title

• G16H40/40

  for the management of medical equipment or devices, e.g. scheduling maintenance or upgrades · CPC title