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1. (WO2017032599) A MEDICAL INJECTION DEVICE WITH A CLEANING CHAMBER

Pub. No.:    WO/2017/032599    International Application No.:    PCT/EP2016/069004
Publication Date: Fri Mar 03 00:59:59 CET 2017 International Filing Date: Thu Aug 11 01:59:59 CEST 2016
IPC: A61M 5/00
A61M 5/315
A61M 5/32
A61M 5/20
A61M 5/28
Applicants: NOVO NORDISK A/S
Inventors: HARALDSTED, Mie
FREDERIKSEN, Morten Revsgaard
MELANDER, Matias
NIELSEN, Christian Højris
HINDE, Graham
KAMP, Bas
HAKKIM, Roshan
Title: A MEDICAL INJECTION DEVICE WITH A CLEANING CHAMBER
Abstract:
The invention relates to an injection device for injecting a liquid drug. The injection device comprises a housing assembly supporting a non-removable cartridge having an interior chamber containing the liquid drug to be injected and a reusable needle cannula connected to the cartridge. A needle shield assembly provided with a cleaning chamber containing a volume of a cleaning agent for cleaning at least the distal tip of the needle cannula between subsequent injections is further provided. The needle shield assembly is axially movable in a proximal direction in relation to the housing assembly from a first position to a second position upon rotation of at least a part of the needle shield assembly, wherein the first position is a position in which the distal tip of the needle cannula is located inside the cleaning chamber thereby cleansing the distal tip of the needle cannula, and the second position is a position in which the distal tip of the needle cannula is located outside and distal to the cleaning chamber for equalizing the pressure in the cartridge.