GB2435835A — Nosepiece for nasal delivery device

USPTO Abstract

A nasal delivery device for and method of delivering substance to a nasal cavity of a subject, the delivery device comprising: a nosepiece unit including a nosepiece 220 for fitting to a nostril of a subject and a nozzle through which substance is in use delivered, preferably substantially axially to a longitudinal axis of the nosepiece, to the respective nasal cavity, wherein at least a tip element 225 of the nosepiece 220 has, at least in one configuration, an elongate lateral section which has a longer dimension d1 in a first, sagittal direction than a second direction d2 orthogonal to the sagittal direction, such that, when the nosepiece 220 is inserted in the nasal cavity of the subject, the longer dimension of the nosepiece acts to engage lower and upper surfaces of the nasal cavity, preferably at the nasal valve, and expand the same in the sagittal plane; and a delivery unit for delivering substance through the nozzle of the nosepiece 220. In another aspect the nozzle may have and asymmetric profile and comprise a plurality of jets.