Medicament delivery device
AssigneeSHL Group AB
InventorStefan Hogdahl
Life of this patent
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Abstract
The present invention relates to a medicament delivery device comprising a distal housing part (12), and a proximal housing part (10) adapted to receive a medicament container (14) comprising a movable stopper (15), wherein said housing parts are configured to be attached to each other; a threaded plunger rod (22) arranged within said medicament delivery device and being movable in the longitudinal direction of the device; wherein the medicament delivery device further comprises plunger force means (98) operably associated with said threaded plunger rod (22) and configured to exert both a torsion force and a tension force on said threaded plunger rod (22) for positioning the plunger rod in relation to the stopper and for avoiding drooling respectively.
Claims15
Medicament delivery device comprising
- a distal housing part, and
- a proximal housing part adapted to receive a medicament container comprising a movable stopper, wherein said housing parts are configured to be attached to each other;
- a threaded plunger rod arranged within said medicament delivery device and being movable in a longitudinal direction of the device;
- a drive nut configured to drive said threaded plunger rod towards a proximal end of the device;
- and
- a spring is pre-tensioned and twisted arranged inside the threaded plunger rod and operably associated with said threaded plunger rod and configured to exert both a torsion force and a tension force on said threaded plunger rod for positioning the plunger rod in relation to the stopper and for avoiding drooling respectively.
Dependencies are inferred from the claim text.