Delivery Device

A delivery device for delivering predetermined amounts of fluid, comprising:

• a body;
• a container filled with fluid to be delivered, wherein the container is arranged inside the body and comprises an opening for expelling the fluid and a wall movable inside the container;
• a threaded plunger rod movably arranged inside the body in a longitudinal direction and in contact with the movable wall;
• a manually operated push mechanism movable in the longitudinal direction and arranged to, upon operation, move the plunger rod toward the movable wall, thereby expelling fluid;
• and
• a movement transformer configured to transform a generally linear movement of the push mechanism into a rotational movement of the plunger rod, wherein the movement transformer comprises a first set of surfaces arranged to the manually operated push mechanism inclined with respect to the longitudinal direction and co-acting with a second set of inclined surfaces arranged on a rotatable drive mechanism rotatably locked to the plunger rod.