A drug bag (2) is housed inside a container, which has two shells (6, 7) movable between an open position and a closed position; and a gripper (11) fitted outside the shells (6, 7) and defined by two jaws (12a, 12b) movable between a grip position and a release position to grip and release at least one conduit (3, 4) allowing access to the content of the bag (2).