Atomised spray dispenser

摘要

Dispensing apparatus (1) comprises a housing (2) defining a chamber (3) receiving liquid (4) to be dispensed and comprising a perforate membrane (13) which defines a front wall of the chamber. A vibrating means (8) is connected to the housing and is operable to vibrate the perforate membrane to dispense droplets of liquid through holes (25) in the perforate membrane. The housing comprises an annular member (11) having a relatively thin inner annular portion connected to the perforate membrane and a relatively thick outer annular portion connected to the vibrating means. The apparatus is suitable for dispensing pharmaceutical products as an atomised mist and provides a hand-held inhaler for oral inhalation.