IP Library › Granted Patent US 12,279,867
Granted Patent B2
US 12,279,867 · App. 18/233,935 · Granted Apr 22, 2025

Systems, devices, and methods related to the individualized calibration and/or manufacturing of medical devices

Inventors: Steven Scott (Pleasanton, CA); Christopher J. Bennell (Carterton, GB); Claire Bhogal (Witney, GB); Katie A. Cranfield (Reading, GB); Marc B. Taub (Mountain View, CA); Bree M. Winter (Witney, GB); Owen D. Reynolds (Cricklade, GB); Jean-Pierre Babka (San Rafael, CA); Dharmendra S. Patel (Stanton Harcourt, GB); Christopher A. Thomas (Cheltenham, GB); Udo Hoss (San Ramon, CA); Mark S. Yahnke (Alameda, CA); Tahir S. Khan (Fremont, CA)
Assignee: ABBOTT DIABETES CARE INC.
A61B5/1495A61B5/14503A61B5/14532A61B5/14546A61B5/0002A61B2560/0223A61B2562/12A61M1/1603
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Quick Facts
Patent No.
US 12,279,867
App. No.
18/233,935
Granted
Apr 22, 2025
Kind
B2
Abstract

Systems, devices, kits, and methods are provided herein in the form of example embodiments that relate to calibration of medical devices. The medical devices can be sensors adapted to sense a biochemical attribute. The embodiments can be used to determine calibration information specific to an individual medical device. The embodiments can determine the calibration information by reference to one or more parameters obtained during manufacturing of the medical device. The embodiments can also determine the calibration information by reference to in vitro testing of the medical devices. The embodiments also apply to systems incorporating those medical devices in their use in the field. Also described are embodiments of modifications to surfaces of sensor substrates, such as through applied radiation and/or the creation of a well, to aid in the placement and/or sizing of a sensor element on the substrate.

Claims (56)

1. A method for manufacturing an in vivo glucose sensor system, comprising:

providing a plurality of in vivo glucose sensors, each in vivo glucose sensor of the plurality of in vivo glucose sensors comprising a respective unique identifier for uniquely identifying each respective in vivo glucose sensor of the plurality of in vivo glucose sensors during each of a plurality of stages of manufacturing, wherein each unique identifier is one of a barcode, a printed QR code, an optical character recognizable text, a resistive code, and a radio frequency readable device, wherein each in vivo glucose sensor is configured to generate electrical signals indicative of levels of glucose in an interstitial fluid, and each glucose sensor includes:

a proximal portion configured to be positioned above a skin surface of a user, and

a distal portion configured to be inserted through the skin surface and in contact with the interstitial fluid;

subjecting a first in vivo glucose sensor of the plurality of in vivo glucose sensors to a first manufacturing stage, wherein the first manufacturing stage includes:

electronically reading the respective unique identifier to uniquely identify the first in vivo glucose sensor;

measuring a first individualized manufacturing parameter associated with the first in vivo glucose sensor; and

storing, in a log, the first individualized manufacturing parameter associated with the first in vivo glucose sensor, an indication of a first date corresponding to the first manufacturing stage, and an indication of a first time corresponding to the first manufacturing stage;

subjecting the first in vivo glucose sensor of the plurality of in vivo glucose sensors to a second manufacturing stage, wherein the second manufacturing stage includes:

electronically reading the respective unique identifier to uniquely identify the first in vivo glucose sensor;

measuring a second individualized manufacturing parameter associated with the first in vivo glucose sensor; and

storing, in the log, the second individualized manufacturing parameter associated with the first in vivo glucose sensor, an indication of a second date corresponding to the second manufacturing stage, and an indication of a second time corresponding to the second manufacturing stage;

obtaining, by at least one processor, individualized calibration information associated with the first in vivo glucose sensor, wherein the individualized calibration information is based at least in part on at least one of the first individualized manufacturing parameter associated with the respective in vivo glucose sensor and the second individualized manufacturing parameter associated with the respective in vivo glucose sensor;

assigning the first in vivo glucose sensor to a first electronics unit, the first electronics unit having a non-transitory memory;

fixedly connecting the first in vivo glucose sensor with the first electronics unit to form a first integrated in vivo glucose sensor system;

transmitting to the first electronics unit the individualized calibration information associated with the first in vivo glucose sensor for storage in the non-transitory memory of the first electronics unit; and

packaging the first integrated in vivo glucose sensor system;

wherein the first integrated in vivo glucose sensor system has a predetermined monitoring time period and is usable for the predetermined monitoring time period without an in vitro blood glucose measurement calibration using a finger stick and an in vitro glucose test strip.

2. The method of claim 1 , wherein transmitting occurs prior to packaging.

3. The method of claim 1 , where transmitting the individualized calibration information associated with the first in vivo glucose sensor comprises wirelessly transmitting the individualized calibration information associated with the first in vivo glucose sensor.

4. The method of claim 3 , wherein packaging occurs prior to transmitting.

5. The method of claim 1 , further comprising subjecting each additional in vivo glucose sensor of the plurality of in vivo glucose sensors to the first manufacturing stage.

6. The method of claim 5 , wherein the first manufacturing stage comprises, for each of the additional in vivo glucose sensors:

electronically reading the respective unique identifier to uniquely identify the respective in vivo glucose sensor;

measuring a first respective individualized manufacturing parameter associated with the respective in vivo glucose sensor; and

storing, in the log, the first respective individualized manufacturing parameter associated with the respective in vivo glucose sensor, an indication of a first respective date corresponding to the first manufacturing stage, and an indication of a first respective time corresponding to the first manufacturing stage.

7. The method of claim 6 , further comprising subjecting each of the additional in vivo glucose sensors of the plurality of in vivo glucose sensors to the second manufacturing stage.

8. The method of claim 7 , wherein the second manufacturing stage comprises, for each of the additional in vivo glucose sensors:

electronically reading the respective unique identifier to uniquely identify the respective in vivo glucose sensor;

measuring a second respective individualized manufacturing parameter associated with the respective in vivo glucose sensor; and

storing, in the log, the second respective individualized manufacturing parameter associated with the respective in vivo glucose sensor, an indication of a second respective date corresponding to the second manufacturing stage, and an indication of a second respective time corresponding to the second manufacturing stage.

9. The method of claim 8 , further comprising, for each of the additional in vivo glucose sensors:

obtaining, by the at least one processor, individualized calibration information associated with the respective in vivo glucose sensor, wherein the individualized calibration information is based at least in part on at least one of the first respective individualized manufacturing parameter associated with the respective in vivo glucose sensor and the second respective individualized manufacturing parameter associated with the respective in vivo glucose sensor;

assigning the respective in vivo glucose sensor to a respective electronics unit, the respective electronics unit having a non-transitory memory;

fixedly connecting the respective in vivo glucose sensor with the respective electronics unit to form a respective integrated in vivo glucose sensor system; and

packaging the respective integrated in vivo glucose sensor system.

10. The method of claim 9 , further comprising, for each of the additional in vivo glucose sensors, transmitting to the respective electronics unit the individualized calibration information associated with the respective in vivo glucose sensor for storage in the non-transitory memory of the respective electronics unit.

11. The method of claim 10 , wherein transmitting occurs prior to packaging.

12. The method of claim 10 , where transmitting the individualized calibration information associated with the respective in vivo glucose sensor comprises wirelessly transmitting the individualized calibration information associated with the respective in vivo glucose sensor.

13. The method of claim 12 , wherein packaging occurs prior to transmitting.

14. The method of claim 1 , further comprising subjecting a baseline subset of the plurality of in vivo glucose sensors to in vitro testing to provide in vitro test data.

15. The method of claim 14 , wherein the individualized calibration information is further based at least in part on the in vitro test data.

16. The method of claim 1 , wherein the unique identifier is a radio frequency readable device.

17. The method of claim 1 , wherein the unique identifier is a printed QR code.

18. The method of claim 1 , wherein the unique identifier is a barcode.

19. The method of claim 1 , wherein the unique identifier is an optical character recognizable (OCR) text.

20. The method of claim 1 , wherein the unique identifier is a resistive code.

21. The method of claim 1 , wherein the first individualized manufacturing parameter obtained at the first manufacturing stage comprises a quantitative manufacturing parameter.

22. The method of claim 1 , wherein the first individualized manufacturing parameter obtained at the first manufacturing stage comprises an individualized qualitative manufacturing parameter.

23. The method of claim 1 , wherein the first manufacturing stage further includes storing the first manufacturing stage in the log.

24. The method of claim 1 , wherein the first individualized manufacturing parameter obtained at the first manufacturing stage comprises a length of time the first in vivo glucose sensor spent at the first manufacturing stage.

25. The method of claim 1 , wherein the first individualized manufacturing parameter obtained at the first manufacturing stage comprises a size or dimensional measurement associated with the first in vivo glucose sensor.

26. The method of claim 1 , wherein the first individualized manufacturing parameter obtained at the first manufacturing stage comprises a chemical composition or chemical concentration associated with the first in vivo glucose sensor.

27. The method of claim 1 , wherein the first individualized manufacturing parameter obtained at the first manufacturing stage comprises an electrical characteristic associated with the first in vivo glucose sensor.

28. The method of claim 1 , wherein the first individualized manufacturing parameter obtained at the first manufacturing stage comprises an environmental condition.

29. The method of claim 1 , wherein each of the plurality of in vivo glucose sensors comprises a sensing region comprising a sensing element, the sensing element being on a modified area of a sensor substrate having a liquid mobility characteristic different than an adjacent area of the sensor substrate.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 7, 2023
From: SCOTT, STEVEN; BENNELL, CHRISTOPHER J.; BHOGAL, CLAIRE; CRANFIELD, KATIE A.; TAUB, MARC B.; WINTER, BREE M.
To: ABBOTT DIABETES CARE INC.
Reel/Frame 065478/0686 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 7, 2023
From: REYNOLDS, OWEN D.; BABKA, JEAN-PIERRE; PATEL, DHARMENDRA S.; THOMAS, CHRISTOPHER A.; HOSS, UDO; YAHNKE, MARK S.; KHAN, TAHIR S.
To: ABBOTT DIABETES CARE INC.
Reel/Frame 065478/0784 →
Continuity (7)
Continuation 17950538 · Sep 22, 2022
Continuation 17891588 · Aug 19, 2022
Continuation 17543633 · Dec 6, 2021
Continuation 17306833 · May 3, 2021
Continuation 15999212 · Aug 17, 2018
Provisional Application 62547635 · Aug 18, 2017
Related Publication 20230389838A1 · Dec 7, 2023
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