Aerosol device having a spout to prevent spray head blockage
AssigneeFisons Limited
InventorsAndrew William Blower, Michael John Clarke, John Stuart Corbett
Life of this patent
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Abstract
An aerosol inhalation device suitable for use in association with a pressurized medicament container having a valve stem has a spray head adapted to receive the valve stem. The spray head has an outlet orifice of uniform diameter which is provided with a spout to prevent blockage of the spray head. The device is especially useful in the administration of hygroscopic medicaments, for example sodium cromoglycate or nedocromil sodium.
Claims8
An aerosol inhalation device comprising a housing having a mouthpiece, a pressurized container of medicament having a valve stem received in said housing, a spray head mounted in said housing having an outlet orifice and adapted to receive the valve stem, the device further comprising means for minimizing blockage of said outlet orifice comprising a frustoconical spout rising out of the spray head, said spout being less than 5 mm in length, said outlet orifice extending through said spout and having a uniform cross section throughout its length.
Dependencies are inferred from the claim text.