Patent ID: 8992484
Filing Date: 2015-03-31
Classification: A61M

Abstract:
1. An injection device comprising: a variable volume reservoir comprising an outlet, a dose setting assembly, a removable cap, a cap receiving part adapted to abut or engage with the cap when the cap is mounted on the injection device, wherein the cap receiving part is operatively coupled to the dose setting assembly, wherein the dose setting assembly is configured to set a dose in response to the cap being mounted on and/or dismounted from the outlet of the injection device, an injection assembly operable to inject the set dose and comprising an at least partly toothed rod adapted to cause a volume reduction of the reservoir, a drive member suited for undergoing relative motion with respect to the toothed rod during dose setting and for transmitting a driving force to the toothed rod during injection, the drive member comprising an engagement element adapted to engage with the toothed rod, a guiding assembly adapted to guide a movement of the drive member and/or the toothed rod, and an energy assembly operatively coupled to the dose setting assembly and the injection assembly and adapted to store and release energy for translational and rotational motion, wherein operating the dose setting assembly to set the dose causes the engagement element to pass a tooth on the toothed rod in a combined translational and rotational movement.