Patent ID: 8590529
Filing Date: 2013-11-26
Classification: A61M

Abstract:
1. An actuator for an inhaler for delivering drug by inhalation, comprising: a housing for receiving a canister which comprises a body which includes a base and a head and defines a chamber for containing drug, and a valve stem which extends from the body and from which drug is in use delivered on actuation of the canister; an outlet through which a user in use inhales; and a nozzle assembly which provides for delivery of drug through the outlet, wherein the nozzle assembly comprises a nozzle block in contact with the valve stem of the canister and, a nozzle outlet which is fluidly connected to the nozzle block and includes an outlet orifice from which drug is in use delivered, wherein the nozzle outlet is integrally formed with the outlet as a separate component to the nozzle block, and wherein the outlet includes a plurality of air flow paths which together provide for a substantially annular air flow at an inner peripheral surface of the outlet on inhalation by the user through the outlet, such as to provide a sheathing air flow to an aerosol spray when delivered from the nozzle outlet.