Patent ID: 8522778
Filing Date: 2013-09-03
Classification: A61B,A61M

Abstract:
1. A nasal delivery device for delivering a substance to a nasal cavity of a subject, including: a nosepiece for insertion into a nostril of a subject; a mouthpiece through which the subject in use exhales; a flow path fluidly which connects the nosepiece and the mouthpiece, whereby exhaled air from an exhalation breath is deliverable through the flow path; a substance supply unit operable to supply a substance for delivery through the nosepiece; and a delivery prevention mechanism configured to prevent exhalation through the flow path, wherein the delivery prevention mechanism comprises first and second members movable relative to one another between first and second configurations, one of the members defining at least a part of the flow path, and the other member including a blocking element which blocks the flow path when the first and second members are in the first configuration and opens the flow path when the first and second members are in the second configuration.