Methods and devices for performing an analytical measurement

Patent metadata

Field	Value
Publication number	US-12301782-B2
Application number	US-202117308665-A
Country	US
Kind code	B2
Filing date	May 5, 2021
Priority date	Nov 7, 2018
Publication date	May 13, 2025
Grant date	May 13, 2025

Abstract

A method of evaluating the suitability of a mobile device for performing an analytical measurement based on a color formation reaction. The capability of the mobile device to have relevant settings of the mobile device controlled by software running on the mobile device is evaluated. The relevant settings pertain to image raw data processing steps to be carried out by the mobile device and may include a color space transformation and a tone mapping transformation. When the evaluation indicates that the mobile device is capable of having the relevant settings controlled by the software, control information indicating that the mobile device is suitable for performing the analytical measurement is provided. When the evaluation indicates that the mobile device is not capable of having the relevant settings controlled by the software, control information indicating that the mobile device is unsuitable for performing the analytical measurement is provided.

First claim

What is claimed is:

1. A method of calibrating a mobile device having a camera for performing an analytical measurement based on a color formation reaction, the method comprising:
a) evaluating the capability of the mobile device to have one or more relevant settings of the mobile device controlled by software running on the mobile device, the relevant settings pertaining to image raw data processing steps to be carried out by the mobile device, wherein the relevant settings include at least one of: a color space transformation and a tone mapping transformation;
b) when the evaluation of step a) indicates that the mobile device is capable of having the one or more relevant settings controlled by the software, providing at least one item of control information indicating that the mobile device is suitable for performing the analytical measurement and performing the following steps:
(1) providing a reference object having a predetermined reference color characteristic;
(2) taking a reference image of at least part of the predetermined reference color characteristic using the camera;
(3) deriving an item of reference setting information pertaining to the relevant settings of the reference image; and
(4) storing the item of reference setting information derived in step (3).

2. The method according to claim 1 , wherein the reference object is selected from the group consisting of a test strip, a test strip vial, a container, a package and a reference color card.

3. The method according to claim 1 , wherein the item of setting information comprises at least one parameter relating to at least one of: a color space transformation and a tone mapping transformation.

4. The method of claim 1 , further comprising:
A) checking whether reference setting information pertaining to relevant settings of a reference image is stored in memory of the mobile device;
B) prompting a user to perform one or more of applying a sample of bodily fluid to an optical test strip and confirming application of a sample of bodily fluid to an optical test strip;
C) waiting a predetermined minimum amount of time; and
D) capturing at least one image of the optical test strip having the sample of bodily fluid applied thereto, wherein the reference setting information is used to control one or more relevant settings of the mobile device.

5. The method according to claim 4 , wherein step A) is performed at least once before step B) is performed.

6. The method according to claim 4 , wherein the method further comprises step E) of determining at least one concentration of the analyte in the sample of bodily fluid applied to the optical test strip.

7. The method according to claim 4 , wherein step C) comprises waiting for at least 5 seconds.

8. A non-transitory computer readable medium having stored thereon computer-executable instructions for performing the method of claim 1 .

9. A mobile device having at least one camera and at least one processor having stored thereon computer-executable instructions for performing the method of claim 1 .

10. The mobile device according to claim 9 and further comprising at least one reference object having at least one predetermined reference color characteristic and at least one optical test strip.

11. The method of calibrating a mobile device according to claim 1 , wherein when the evaluation in step a) indicates that the mobile device is not capable of having the one or more relevant settings controlled by the software, providing at least one item of control information indicating that the mobile device is unsuitable for performing the analytical measurement.

12. A method of performing an analytical measurement based on a color formation reaction in an optical test strip by using a mobile device having a camera, comprising:
verifying suitability of the mobile device by performing by performing the following steps:
a) evaluating the capability of the mobile device to have one or more relevant settings of the mobile device controlled by a user's software running on the mobile device, the relevant settings pertaining to image raw data processing steps to be carried out by the mobile device, wherein the relevant settings include at least one of: a color space transformation and a tone mapping transformation;
b) if the evaluation in step a) indicates that the mobile device is capable of having the one or more relevant settings controlled by the user's software, providing at least one item of control information, the at least one item of control information indicating that the mobile device is suitable for performing the analytical measurement; and
c) if the evaluation in step a) indicates that the mobile device is not capable of having the one or more relevant settings controlled by the user's software, providing at least one item of control information, the at least one item of control information indicating that the mobile device is unsuitable for performing the analytical measurement,
wherein the suitability is a property of the mobile device for performing one or more predetermined functions, wherein the suitability is qualified or quantified by using one or more characteristics of the mobile device, wherein the characteristics of the mobile device comprise the capability of the mobile device to have the one or more relevant settings controlled;

capturing at least one image of a reference object to determine an item of reference setting information, wherein the item of reference setting information is used to control at least one of the one or more relevant settings of the mobile device.

13. The method of performing an analytical measurement according to claim 12 , further comprising:
prompting a user to perform one or more of applying a sample of bodily fluid to an optical test strip and confirming application of a sample of bodily fluid to an optical test strip;
waiting for a predetermined minimum amount of time; and
capturing at least one image of the optical test strip having the sample of bodily fluid applied thereto.

14. A method of evaluating the suitability of a mobile device for performing an analytical measurement based on a color formation reaction, the mobile device having at least one camera, the method comprising:
a) evaluating the capability of the mobile device to have one or more relevant settings of the mobile device controlled by a user's software running on the mobile device, the relevant settings pertaining to image raw data processing steps to be carried out by the mobile device, wherein the relevant settings include at least one of: a color space transformation and a tone mapping transformation;
b) if the evaluation in step a) indicates that the mobile device is capable of having the one or more relevant settings controlled by the user's software, providing at least one item of control information, the at least one item of control information indicating that the mobile device is suitable for performing the analytical measurement; and
c) if the evaluation in step a) indicates that the mobile device is not capable of having the one or more relevant settings controlled by the user's software, providing at least one item of control information, the at least one item of control information indicating that the mobile device is unsuitable for performing the analytical measurement,
wherein in step a) the capability of the mobile device to have one or more relevant settings controlled is evaluated by trying to control the one or more relevant settings and then determining a success of the control, wherein the user's software is used to send a command for individual values of the one or more relevant settings

Assignees

• Roche Diabetes Care Inc

Inventors

• Limburg Bernhard
• Wieder Herbert
• Berg Max
• Wetzel Simon
• Sieffert Daniel
• Hailer Fredrik
• Melchinger Christian
• Guermazi Zied

Classifications

• H04N23/62

  Control of parameters via user interfaces · CPC title

• G01N2021/8488

  the band presenting reference patches · CPC title

• A61B5/1495

  Calibrating or testing of in-vivo probes · CPC title

• A61B5/14532

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

• G06T2207/10024

  Color image · CPC title