The invention concerns a device (3) for dispensing a liquid, the device being connectable to a container (4) containing the liquid and detachably connectable to a base station (5) having drive means (524), the device (3) comprising a liquid duct (69) and means (6) actuated by drive means (524) for effecting passage of liquid through the duct (69), characterized in that the device (3) comprises a cutter (101) for piercing a tamper resistant foil (41) positioned across the outlet of the container (4) and that means (103) for actuating the cutter are operable from outside the device (3).