A device for the delivery of medicinal liquids, in which the device includes a base configured for sealing attachment to a container pre-filled with liquid medicine and a displaceable actuator element associated with the base. The association is that of a piston and a cylinder such that the base and the displaceable actuator element define between them a pressure generating volume. The base includes a piercing element having at least one air delivery passage providing fluid communication between the pressure generating volume and an interior of the container, the piercing element also includes at least one liquid delivery passage providing fluid communication between the interior of the container and a medicinal delivery element.
