IP Library › Granted Patent US 12,285,252
Granted Patent B2
US 12,285,252 · App. 17/950,538 · Granted Apr 29, 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 12,285,252
App. No.
17/950,538
Filed
Sep 22, 2022
Granted
Apr 29, 2025
Kind
B2
Art Unit
1797
USPC
600/365
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 (47)

1. A method comprising:

physically associating with each of a first plurality of medical devices that comprise a lot, one or more identifiers that uniquely identifies the respective medical device of the first plurality, such that each respective medical device of the first plurality can be uniquely identifiable by the one or more identifiers associated with the respective medical device of the first plurality;

subjecting the first plurality of medical devices that were physically associated with the one or more respective identifiers to one or more manufacturing stages and, during at least one of the one or more manufacturing stages:

reading one or more of the identifiers physically associated with the respective medical device of the first plurality; and

obtaining one or more manufacturing parameters associated with the respective medical device of the first plurality;

storing the one or more obtained manufacturing parameters;

subjecting a second plurality of medical devices to one or more in vitro tests, wherein the second plurality is a first subset of the first plurality;

obtaining in vitro test data from one or more of the in vitro tests, and storing the in vitro test data;

determining, for a third plurality medical devices for which the one or more manufacturing parameters were stored, and based at least in part on the stored in vitro test data and one or more of the one or more stored manufacturing parameters associated with the respective medical device of the first plurality, individualized calibration information associated with the respective medical device of the first plurality, wherein the third plurality is a second subset of the first plurality;

for each of the third plurality of medical devices for which the individualized calibration information was determined:

reading one or more of the identifiers that were physically associated with the respective medical device of the third plurality;

retrieving, based at least in part on one or more of the identifiers that was read after determining the individualized calibration information associated with the respective medical device of the third plurality, the individualized calibration information associated with the respective medical device of the third plurality; and

wirelessly transmitting to an electronics unit associated with the respective medical device of the third plurality the retrieved individualized calibration information associated with the respective medical device of the third plurality, wherein after receipt by the electronics unit the individualized calibration information is stored in a non-transitory memory of the electronics unit, wherein:

the respective medical device of the third plurality is a transcutaneous electrochemical glucose sensor that comprises an ex vivo portion positionable above a skin surface of a user and an in vivo portion positionable below the skin surface to contact an interstitial fluid of the user to detect a plurality of glucose levels using a glucose-responsive enzyme; and

when the respective medical device of the third plurality is distributed to the user the respective medical device of the third plurality is integrated with the electronics unit and does not require user calibration.

2. The method of claim 1 , wherein the second plurality of medical devices are not distributed to users.

3. The method of claim 2 , wherein the one or more manufacturing parameters obtained at the one or more manufacturing stages comprises one or more quantitative manufacturing parameters and the individualized calibration information associated with the respective medical device of the third plurality is determined based at least in part on the one or more quantitative manufacturing parameters.

4. The method of claim 2 , wherein the one or more identifiers comprises a Near Field Communication (NFC) element.

5. The method of claim 2 , wherein the one or more identifiers comprises a printed two-dimensional code.

6. The method of claim 2 , wherein the one or more identifiers comprises a barcode.

7. The method of claim 2 , wherein the one or more identifiers comprises optical character recognizable (OCR) text.

8. The method of claim 2 , wherein the one or more identifiers comprises a resistive code.

9. The method of claim 3 , wherein obtaining the one or more quantitative manufacturing parameters comprises one or more of: measuring a value of the one or more quantitative manufacturing parameters, calculating a relative indication of the one or more quantitative manufacturing parameters, or calculating the one or more quantitative manufacturing parameters based at least in part on a measured value.

10. The method of claim 3 , wherein the one or more quantitative manufacturing parameters is specific to the respective medical device of the first plurality.

11. The method of claim 3 , wherein the one or more manufacturing parameters obtained at the one or more manufacturing stages comprises a qualitative manufacturing parameter that identifies:

a current date and time;

the respective manufacturing stage;

a particular piece of equipment used during the respective manufacturing stage; or

a length of time the respective medical device of the first plurality spent at the respective manufacturing stage.

12. The method of claim 3 , wherein the one or more quantitative manufacturing parameters comprises a size or dimensional measurement associated with the respective medical device of the first plurality.

13. The method of claim 3 , wherein the one or more quantitative manufacturing parameters comprises a chemical composition or chemical concentration associated with the respective medical device of the first plurality.

14. The method of claim 3 , wherein the one or more quantitative manufacturing parameters comprises an electrical characteristic associated with the respective medical device of the first plurality.

15. The method of claim 14 , wherein the electrical characteristic is impedance.

16. The method of claim 3 , wherein the individualized calibration information comprises a plurality of sensitivity slopes associated with the respective medical device of the first plurality.

17. The method of claim 3 , wherein the one or more manufacturing parameters is associated with an environmental condition.

18. The method of claim 17 , wherein the one or more manufacturing parameters associated with an environmental condition is associated with temperature, temperature variation, ambient pressure, pressure variation, an amount of time the respective medical device of the first plurality spent at the respective manufacturing stage, or an amount of time the respective medical device of the first plurality spent between the one or more of the manufacturing stages.

19. The method of claim 1 , wherein wirelessly transmitting the retrieved individualized calibration information comprises wirelessly transmitting using a Near Field Communication (NFC) element.

20. The method of claim 1 , wherein when the respective medical device of the third plurality is distributed to the user it does not require system calibration.

21. The method of claim 1 , wherein each of the one or more manufacturing parameters is an individualized manufacturing parameter.

22. The method of claim 21 , wherein each of the respective medical devices of the first plurality includes a membrane for a sensing region, and the one or more individualized manufacturing parameters is a size of the membrane.

23. The method of claim 22 , wherein the size of the membrane is representative of a width of the membrane.

24. The method of claim 22 , wherein the size of the membrane is representative of a length of the membrane.

25. The method of claim 22 , wherein the size of the membrane is representative of a thickness of the membrane.

26. The method of claim 22 , wherein the size of the membrane is representative of a peripheral length of the membrane.

27. The method of claim 22 , wherein the size of the membrane is representative of an area of the membrane.

28. The method of claim 22 , wherein the size of the membrane is representative of a volume of the membrane.

29. The method of claim 1 , wherein each of the first plurality of medical devices 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 3, 2022
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 061649/0436 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 3, 2022
From: SCOTT, STEVEN; BENNELL, CHRISTOPHER J.; BHOGAL, CLAIRE; CRANFIELD, KATIE A.; TAUB, MARC B.; WINTER, BREE M.
To: ABBOTT DIABETES CARE INC.
Reel/Frame 061879/0738 →
Continuity (6)
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 20230028587A1 · Jan 26, 2023
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