A nasal spray assembly comprising a nasal device and a container, the container including a reservoir containing a medicament, the reservoir being sealed by a movable piston, the nasal spray assembly being for administering the medicament to the nose of a user, the nasal device comprising a body and a cap, the cap defining a socket into which the body can be inserted, an outlet and a piercing element, the piercing element including a piercer inlet and extending into the socket from a piercer stop within the socket, the piercer inlet being connected to the outlet by a conduit, the body holding the container, and the nasal spray assembly being arranged such that, as the body is moved into the socket along a first axis, the piercing element pierces and passes through the piston such that the piercer inlet lies within the reservoir, contact between the piercer stop and piston causes the piston to be forced into the container, reducing the reservoir volume and thereby forcing medicament from the reservoir through the conduit and out of the outlet, the nasal device being characterised in that the body and cap cooperate to provide a pre-lock and a post-lock, the pre-lock engages automatically when the body is inserted a first predetermined distance into the socket and, when engaged, the pre-lock substantially prevents withdrawal of the body from the cap and hinders further movement of the body into the cap until at least a threshold force has been applied thereby retaining the body and cap in a pre-use configuration, the post-lock engages automatically when the body is inserted a second predetermined distance into the socket and, when engaged, substantially prevents withdrawal of the body from the cap thereby substantially retaining the body and cap in a post-use configuration, the second predetermined distance is greater than the first predetermined distance.Linvention concerne un ensemble de pulvérisation nasale comprenant un dispositif nasal et un récipient, le récipien
