Supplemental device for attachment to an injection device for recording and displaying a dose value set by the user using optical character recognition (OCR)

US10043093B2 · kind B2 · utility

Assignee

• Sanofi-Aventis Deutschland GMBH · DE

Inventors

• Alexander Allerdings · Frankfurt am Main, DE
• Christian Hoffmann · Leonberg, DE
• Rainer Fischer · Monschau, DE

Key dates

• Filing date: Jan 22, 2015
• Grant date: Aug 7, 2018
• Expiry date: Mar 26, 2035

Classification

• Technology area (CPC G): Physics
• CPC primary: G06V2201/02
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A supplemental device (2) for attachment to a pen-type drug injection device, the supplemental device comprising an optical sensor array or camera (25) configured to capture an image of one or more numbers representing dose values on a dose dial sleeve of the injection device, and a processor (24) and memory (240,241) arrangement configured to run an algorithm to receive image data from the sensor/camera and extract the dialed dose value from said image via optical character recognition (OCR). The algorithm is able to determine the set dose value which is at the centre of the image (902), also if the dose scale only comprises integer values in steps of two (see FIG. 9).