| 摘要 |
<p>Inhalation device (1) having a skirt (2) to receive an aerosol container (5) that discharges a metered dose of medicament through a longitudinal passage in a valve stem (6) each time the valve stem (6) is depressed, and a head-piece (3) having a mouth-piece (4) extending therefrom and a valve stem boss (8) adapted to receive said valve stem (6) in a discharge passageway (9) therein and having a discharge orifice (11). In order to provide an audible signal to the patient on correct inhalation, indicating that he should actuate the container (5) to receive the metered dose the inhalation device (1), having an air-passageway through said skirt (2) and head-piece (3) to said mouth-piece (4), has a sounding device (12) located in said air-passageway upstream of said discharge orifice (11) and surrounding the actuating means for the metering valve means. The sounding device (12) comprises a membrane-like member (12) and a vibratory reed or tongue (14), the reed or tongue (14) being adapted to sound only when air passes through the inhalation device (1) during inhalation.</p> |
