Medicament delivery device comprising relatively movable housing parts, a medicament container,a proximal plunger rod part and distal plunger rod part in threaded engagement with each other, wherein said proximal plunger rod part is movably arranged in relation to said housing part sand in contact with a stopper of said medicament container, a lever pivotally attached to said housing parts and to the distal plunger rod part. The housing parts are ergonomically shaped having a grip-size for achieving a full hand grip and wherein said distal housing part and said proximal housing part are operably interconnected to each other through said lever such that a relative movement of said housing parts is capable of operating the lever for setting and injecting a dose.
