| 摘要 |
An oral or nasal inhalation device comprises an air passageway (22) optionally shaped as a venturi passing through a body (20). A holder (40) on the body receives a single dose powder container (60) containing a medicament. A piercer (26) or needle having a bore therethrough extends from the body into the holder. The user places the container and removes a seal on the top end of the container. Alternatively, the piercer is longer than the container and pierces both ends of it, obviating the need for a removable seal (62). A sharp inhalation causes air to be drawn through the air intake (27), creating a partial vacuum in the air passageway and causing the powder to be dispensed from the container through the bore of the piercer. Another embodiment has two piercers, each acting on an end of the container. Further embodiments make use of a rotable disk provided with multiple containers. <IMAGE> |
