Container for receiving liquids

The invention concerns a container for receiving a liquid drug, comprising a container body (1) with a cylindrical interior space and with a piston (2) arranged therein, which in liquid-tight manner abuts to the boundary walls of interior space and by doing so is movable within said interior space in order to increase or decrease the volume of the container. The piston (2) provides coupling means (4) for coupling a piston rod (5) in a detachable manner to it for moving it forward and backward. These coupling means (4) interact with the container body (1) in such a manner that, between a fully retracted position of the piston (2) and all other positions of the piston (2) they change their shape. By means of this design it becomes possible to provide a syringe-type container having a piston (2) which can be moved forward and backward by means of a dedicated piston rod (5) but cannot be removed from the container body (1) by means of this piston rod (5) even in case there is no physical stop for the piston (2) at the end of the container body (1).