DISPOSITIF D'INJECTION DE MÉDICAMENT AYANT UN SUPPORT DE CARTOUCHE ACTIONNANT AUTOMATIQUEMENT UN EMBRAYAGE PERMETTANT LA RÉINITIALISATION DE MÉCANISME D'ENTRAÎNEMENT ET LE RECHARGEMENT DE RESSORT D'ENTRAÎNEMENT LORS D'UN ÉCHANGE DE CARTOUCHE
Injection device for setting and dispensing of a dose of a medicament from a replaceable drug cartridge, the device comprising: - an elongated main housing (11) accommodating the cartridge (6) filled with the medicament and defining an axial direction (3, 4), - a piston rod (130) arranged inside the main housing (11) and extending in axial direction along a first axis (3) to operably engage with a piston of the cartridge (6), - a drive sleeve (100) rotationally coupled to the piston rod and rotationally biased by a torsion drive spring (126), - a reset member (40) axially displaceable inside the main housing (11) between a proximal operating position (O) and a distal reset position (R) along a second axis (4) radially offset from and parallel to the first axis (4) to switch the device between a reset mode and an operating mode, - a cartridge holder (140) releasably attachable to a distal end of the main housing (11) via a bayonet type coupling along the first axis (3), wherein the cartridge holder (140) comprises a sidewall portion (147) with a radially outwardly protruding lock member (144) to axially engage with and shift the reset member (40) located radially adjacent the cartridge holder (140), the reset member thus forming part of a clutch which together with a ratchet member (60), a dispensing member (30), the drive sleeve (100) and a dose dial (20/32) allows the drive mechanism to be reset and the torsion drive spring to be manually re-loaded after an empty drug cartridge has been removed from the device.L'invention concerne un dispositif d'injection pour régler et administrer une dose d'un médicament à partir d'une cartouche de médicament remplaçable, le dispositif comprenant : - un boîtier principal allongé (11) logeant la cartouche (6) remplie avec le médicament et définissant une direction axiale (3, 4), - une tige de piston (130) agencée à l'intérieur du boîtier principal (11) et s'étendant dans une direction axiale le long d'un premier axe (3) pour être
