abstract |
An actuator for an inhaler for delivering drug by inhalation, comprises: a housing (11; 111 ) for receiving a canister (5; 106) which comprises a body (7; 107) which includes a base and a head and defines a chamber for containing drug, and a valve stem (8; 108) which extends from the body (7; 107) and from which drug is in use delivered on actuation of the canister (5; 106); an outlet (13; 105) through which a user in use inhales; and a nozzle assembly (4; 104) which provides for delivery of drug through the outlet (13; 105), wherein the nozzle assembly (4; 104) comprises a nozzle block (17; 127) for receiving the valve stem (8; 108) of the canister (5; 106) and, as a separately-formed component, a nozzle outlet (19; 121 ) which is fluidly connected to the nozzle block (17; 127) and includes an outlet orifice (41; 123) from which drug is in use delivered. |