Supplemental device for attachment to a pen injector and determination of a set dose amount using optical incremental encoder

US11964133B2 · kind B2 · utility

Assignee

• Sanofi-Aventis Deutschland GMBH · DE

Inventors

• Thomas Klemm · Mannheim, DE
• Stefan Moessler · Berlin, DE

Key dates

• Filing date: Aug 6, 2020
• Grant date: Apr 23, 2024
• Expiry date: Sep 5, 2041

Classification

• Technology area (CPC G): Physics
• CPC primary: G01F23/292
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A data collection device comprises at least two optical sensors configured to detect tick marks of a medicament dose indicator of the medicament delivery device in their respective detection areas, and a processing arrangement configured to determine a current medicament dosage programmed into said medicament delivery device based on a count of the tick marks that pass through the detection areas of the optical sensors during programming of said medicament dosage into said medicament delivery device. A direction of travel of the tick marks may be identified, to determine whether the programmed dosage is increasing or decreasing. The apparatus may be arranged to identify a baseline dosage amount using a camera image of the medicament dosage indicator, so that a starting point for the count of tick marks can be determined. The medicament delivery device may be an injector pen.