DRIVE MECHANISM FOR A DRUG DELIVERY DEVICE

The present invention relates to a drive mechanism of a drug delivery device for setting and dispensing of a dose of a medicament, the mechanism comprising:a housing (20),a piston rod (120) to operably engage with a piston (14) of a cartridge (12) to displace the piston (14) in a distal direction (1...

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Bibliographische Detailangaben
Hauptverfasser:	Berning, Daniel, Blank, Philippe, Pelzer, Wolfgang, Wilden, Björn, Bayer, Stefan
Format:	Patent
Sprache:	eng
Schlagworte:	DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY HUMAN NECESSITIES HYGIENE MEDICAL OR VETERINARY SCIENCE
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Beschreibung
Zusammenfassung:	The present invention relates to a drive mechanism of a drug delivery device for setting and dispensing of a dose of a medicament, the mechanism comprising:a housing (20),a piston rod (120) to operably engage with a piston (14) of a cartridge (12) to displace the piston (14) in a distal direction (1),a rotatable member (80) arranged on an axially extending axis of rotation (4) in the housing (20), said rotatable member (80) being rotatable in a dose incrementing direction (5) against the action of a spring element (78) and being operably engageable with the piston rod (120) during dose dispensing,a clutch member (150) comprising at least one radially displaceable clutch element (153) to engage with a rim (82) of the rotatable member (80) with variably adjustable strength.