| 摘要 |
For dispensing to a respiratory patient single discharges of metered aerosol medication, a conventional aerosol container designed to deliver in response to a single actuation a metered amount of aerosol compound, is combined with a chamber partly formed by a breath-operated membrane linked with a spring-retained catch and latch actuator which on release by the inhalation-deflected membrane presses on the metering valve of the container delivering a single discharge in exactly timed relation with the patient's breathing, and also opens a valve communicating with the outside, to admit free air during the final part of the aerosol discharge for continued inhalation. The actuator linkage and the air valve have to be reset by hand to ready the device for the next cycle of operation.
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