US Patent 9010325 Nasal delivery devices

A nasal delivery device for and method of delivering particulate substance to the nasal airway of a subject, the delivery device comprising: a body assembly (3) including a mouthpiece unit (9) which includes a mouthpiece through which the subject in use exhales, and a substance-supply unit which is fluidly connected to the mouthpiece unit and actuatable to provide particulate substance for delivery to the nasal airway of the subject; wherein the body assembly is configured to receive a replaceable nosepiece unit (5) which includes a nosepiece and contains a container containing particulate substance.