The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 23, 2018
Filed:
Apr. 08, 2014
Sanofi, Paris, FR;
Stefan Bayer, Würselen, DE;
Wolfgang Pelzer, Kreuzau, DE;
Björn Wilden, Simmerath, DE;
Philipp Zeitz, Aachen, DE;
Sanofi, Paris, FR;
Abstract
The present invention relates to a drive mechanism for a drug delivery device for dispensing of a dose of a medicament, and to a respective drug delivery device, wherein the drive mechanism comprises: an elongated housing () extending in an axial direction (), a piston rod () to operably engage with a piston () of a cartridge () to displace the piston () in axial distal direction (), a drive wheel () axially fixed to the housing (), engaged with the piston rod () and rotatable relative to the housing () for driving the piston rod () in distal direction (), a drive sleeve () axially displaceable relative to the drive wheel () to rotatably engage with the drive wheel () in a distal dose dispensing position and to disengage from the drive wheel () in a proximal dose setting position, wherein the drive sleeve () is rotatably secured to the housing () in the proximal dose setting position by means of a ratchet member ().