Drive mechanism of a drug delivery device

US10105498B2 · kind B2 · utility

Assignee

• Sanofi · FR

Inventors

• Stefan Bayer · Würselen, DE
• Daniel Berning · Baesweiler, DE
• Philippe Blank · Düsseldorf, DE
• Wolfgang Pelzer · Kreuzau, DE
• Björn Wilden · Simmerath, DE

Key dates

• Filing date: Apr 8, 2014
• Grant date: Oct 23, 2018
• Expiry date: May 22, 2034

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2205/582
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A drug delivery device for dispensing of a dose of a medicament includes a housing extending in an axial direction and a piston rod to operably engage with a piston of a cartridge to displace the piston in an axial distal direction. The drug delivery device includes a dose indicating mechanism including a first spool and a second spool rotatably supported in the housing and a dose indicating tape coiled onto at least the second spool and fixed with an end to an outer circumference of the first spool. The first and second spools are oriented substantially parallel to each other and substantially parallel to the piston rod.