Method and system for determining concentration of an analyte in a sample of a bodily fluid, and method and system for generating a software-implemented module

Patent metadata

Field	Value
Publication number	US-11928814-B2
Application number	US-202117343513-A
Country	US
Kind code	B2
Filing date	Jun 9, 2021
Priority date	Dec 10, 2018
Publication date	Mar 12, 2024
Grant date	Mar 12, 2024

Abstract

A method for generating a module configured to determine concentration of an analyte in a sample of a body fluid is disclosed. The method includes providing a first set of measurement data derived from images of one or more test strips indicating a color transformation in response to a body fluid containing an analyte. The images can be recorded by multiple devices with differing cameras, software and/or hardware device configurations for image recording and image data processing. A neural network model can be generated in a machine learning process applying an artificial neural network and a module configured to determine concentration of an analyte in a second sample of a body fluid can be generated. Further, the present disclosure includes a system for generating the module as well as a method and a system for determining concentration of an analyte in a sample of a bodily fluid.

First claim

What is claimed is:

1. A method for generating a module configured to determine concentration of an analyte in a sample of a body fluid, the method comprising:
providing a first set of measurement data including first color information derived from images for a region of interest of one or more test strips, the images being indicative of a color transformation of the region of interest in response to applying a body fluid containing an analyte to the region of interest, and the images being recorded by a plurality of devices each configured for image recording and image data processing for generating the first color information, wherein at least some cameras, software and/or hardware device configurations for image recording and image data processing are different among the plurality of devices;
generating a neural network model in a machine learning process applying an artificial neural network, comprising:
providing the neural network model; and
training the neural network model using training data selected from the first set of measurement data; and

generating a software-implemented module comprising a first analyzing algorithm representing the neural network model;
wherein the software-implemented module is configured to determine concentration of an analyte in a second sample of a body fluid from analyzing a second set of measurement data indicative of second color information derived from images for a region of interest of one or more test strips, the images being indicative of a color transformation of the region of interest in response to applying the second sample of the body fluid containing the analyte to the region of interest.

2. A method for determining concentration of an analyte in a sample of a body fluid, the method comprising:
providing a present set of measurement data including present color information derived from images for a region of interest of a present test strip, the images being indicative of a color transformation of the region of interest in response to applying a present sample of a body fluid containing an analyte to the region of interest;
providing a module according to claim 1 ;
using the first analyzing algorithm of the module to determine concentration of the analyte in the present sample; and
generating concentration data indicative of the concentration of the analyte in the present sample.

3. The method according to claim 2 , further comprising:
providing a second analyzing algorithm, the second analyzing algorithm being different from the first analyzing algorithm; and
determining, for the concentration of the analyte in the present sample of the body fluid, a first estimation value by analyzing the present set of measurement data using the second analyzing algorithm.

4. The method according to claim 3 , wherein the determining comprises determining a target range for the concentration of the analyte in the present sample of the body fluid.

5. The method according to claim 3 , wherein the determining comprises determining an averaged concentration by averaging the first estimation value and a concentration value provided by the analyzing of the present set of measurement data by the first analyzing algorithm.

6. The method according to claim 3 , wherein the determining comprises determining concentration of blood glucose in the second sample.

7. The method according to claim 2 , wherein at least one of the first and second set of measurement data includes the first and second color information, respectively, derived from images recorded over a measurement period of time for the region of interest of the one or more test strips, consecutive images being recorded with a time interval from about 0.1 to about 1.5 s.

8. The method according to claim 1 , wherein the plurality of devices have at least one of different camera and different image processing software.

9. The method according to claim 1 , wherein the images recorded comprise images recorded with different optical image recording conditions.

10. The method according to claim 1 , wherein the images comprise images of the region of interest prior to applying the one or more first samples of the body fluid to the region of interest.

11. A system for generating a module configured to determine concentration of an analyte in a sample of a body fluid, the system comprising one or more data processors, the one or more data processors configured to:
provide a first set of measurement data including first color information derived from images for a region of interest of one or more test strips, the images being indicative of a color transformation of the region of interest in response to applying a body fluid containing an analyte to the region of interest, and the images being recorded by a plurality of devices each configured for image recording and image data processing for generating the first color information, wherein at least some cameras, software and/or hardware device configurations for image recording and image data processing are different among the plurality of devices;
generate a neural network model in a machine learning process applying an artificial neural network, comprising providing the neural network model and training the neural network model using training data selected from the first set of measurement data; and
generate a module comprising a first analyzing algorithm representing the neural network model;
wherein the module is configured to determine concentration of an analyte in a second sample of a body fluid from analyzing a second set of measurement data indicative of second color information derived from images for a region of interest of one or more test strips, the images being indicative of a color transformation of the region of interest in response to applying the second sample of the body fluid containing the analyte to the region of interest.

12. A system for determining concentration of an analyte in a sample of a body fluid, the system comprising one or more data processing devices, the one or more data processing devices configured to:
provide a present set of measurement data including present color information derived from images for a region of interest of a present test strip, the images being indicative of a color transformation of the region of interest in response to applying a present sample of a body fluid containing an analyte to the region of interest;
provide a module according to claim 1 ;
use the first analyzing algorithm of the module to determine concentration of the analyte in the present sample; and
generate concentration data indicative of the concentration of the analyte in the present sample.

13. A non-transitory computer readable medium having stored thereon computer-executable instructions for performing the method according to claim 1 .

14. A non-transitory computer readable medium having stored thereon computer-executable instructions for performing the method according to claim 2 .

15. A method for generating a module configured to determine concentration of an analyte in a sample of a body fluid, the method comprising:
(a) providing one or more test strips having a region configured to change color in reaction to an analyte contained in a body fluid sample;
(b) using a plurality of mobile devices to obtain a first set of images of the one or more test strips in sequence beginning before the body fluid sample is applied to the test strip and ending after completion of the color change reaction, wherein at least some cameras, software and/or hardware device configurations for image recording and image data processing are different among the plural

Assignees

• Roche Diabetes Care Inc

Inventors

• Berg Max
• Hailer Fredrik
• Limburg Bernd
• Sieffert Daniel
• Wieder Herbert
• Seelig Peter
• Aysin Benhur
• Chittajallu Siva

Classifications

• G06T7/0012 Primary

  Biomedical image inspection · CPC title

• G01N33/66

  involving blood sugars, e.g. galactose · CPC title

• G06T5/50

  using two or more images, e.g. averaging or subtraction · CPC title

• G06T7/11

  Region-based segmentation · CPC title

• G06T7/90

  Determination of colour characteristics · CPC title