MEDICAMENT DELIVERY DEVICE

A medicament delivery device includes a housing; a hollow plunger rod; a dose drum concentrically arranged between the housing and plunger rod and movable when setting and delivering a dose; and a plunger rod driver. The driver includes a hollow ratchet arm drum movably arranged within the plunger r...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	BERGENS, Thomas
Format:	Patent
Sprache:	eng ; fre ; ger
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:	A medicament delivery device includes a housing; a hollow plunger rod; a dose drum concentrically arranged between the housing and plunger rod and movable when setting and delivering a dose; and a plunger rod driver. The driver includes a hollow ratchet arm drum movably arranged within the plunger rod and fixed to the dose drum, with the arm drum and rod releasably coupled; a dose activator having a longitudinal rod movably arranged within and releasably coupled to the arm drum; a dose setting knob fixed to the dose activator and releasably coupled to the arm drum; and a resilient element arranged between the arm drum and dose activator that biasses them in a direction decoupling the longitudinal rod from the arm drum and coupling the knob with the arm drum, such that during dose setting, turning the knob forces the arm drum and dose drum to rotate together.