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1. (WO2017060426) DRUG DELIVERY DEVICE WITH SLIM DRIVE MECHANISM

Pub. No.:    WO/2017/060426    International Application No.:    PCT/EP2016/073999
Publication Date: Fri Apr 14 01:59:59 CEST 2017 International Filing Date: Sat Oct 08 01:59:59 CEST 2016
IPC: A61M 5/20
A61M 5/315
A61M 5/24
Applicants: NOVO NORDISK A/S
Inventors: WINDUM, Jesper Peter
KLITMOSE, Lars Peter
PLAMBECH, Christian
Title: DRUG DELIVERY DEVICE WITH SLIM DRIVE MECHANISM
Abstract:
A drug delivery device comprises a housing (201) and an expelling assembly with a piston rod (220), a drive tube (260) with an outer surface and a scale drum (270) arranged between the drive tube and the housing, the scale drum being coupled to the housing and the drive tube outer surface. The device further comprises a drive spring (255) arranged between the housing and the drive tube, and setting means (280) allowing a user to simultaneously set a dose amount to be expelled and strain the drive spring correspondingly by rotation of the drive tube. The scale drum is coupled to the drive tube via a spline connection, wherein the drive spring is arranged proximally of the spline connection when the spline connection is in its proximal-most position.