Method of determining a concentration of an analyte in a bodily fluid and mobile device configured for determining a concentration of an analyte in a bodily fluid

US12295730B2 · kind B2 · utility

Assignee

• Roche Diabetes Care, Inc. · US

Inventors

• Max Berg · Mannheim, DE
• Fredrik Hailer · Kohlhof, DE
• Bernd Limburg · Sörgenloch, DE
• Daria Skuridina · Berlin, DE
• Volker Tuerck · Berlin, DE
• Momme Winkelnkemper · Berlin, DE

Key dates

• Filing date: Dec 16, 2021
• Grant date: May 13, 2025
• Expiry date: Mar 16, 2043

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2201/0221
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method of determining concentration of an analyte in a body fluid using a mobile device having a camera is disclosed. In the inventive method, the camera is used to take a series of calibration images of a region of interest of an object. The calibration images differ in their brightness. A key calibration figure is derived from each calibration image, the key calibration images being characteristic for a tone mapping function of the mobile device. A probable tone mapping function of the mobile device is determined by taking into account the key calibration figures. An analysis image is taken of at least part of a test field of an optical test strip, the test field having a body fluid applied thereto. Analyte concentration is determined from the analysis image of the test field by taking into account the probable tone mapping function of the mobile device.