|Title:||Atomising devices and methods|
|Abstract:||A metered dose inhaler for dispensing a fluid medicament as droplets of small mean particle size without the use of pressurized gas or liquefied propellants. A liquid drug is contained in a fluid reservoir, and metered quantities of the drug are successively presented into a reduced cross-section pressure chamber, with non-return valves controlling the flow of liquid through the device. The metered quantity of the drug is then subjected to a sudden and great increase in pressure by releasing a piston into the pressure chamber. The liquid drug is thereby ejected through an atomizing head, to reduce it to a fine atomized spray of small mean particle size, preferably less than approximately 12 micrometers.|
|Inventor(s):||Weston; Terence E. (Woodbridge, GB2), Dunne; Stephen T. (Shotley, GB2)|
|Assignee:||DMW (Technology) Limited (GB)|
Patent Claim Types:|
see list of patent claims
|Device; Use; Delivery;|
|Foriegn Application Priority Data|
|Foreign Country||Foreign Patent Number||Foreign Patent Date|
|United Kingdom||9006340||Mar 21, 1990|
|United Kingdom||9023767||Nov 01, 1990|
|PCT Filed||March 21, 1991||PCT Application Number:||PCT/GB91/00433|
|PCT Publication Date:||October 03, 1991||PCT Publication Number:||WO91/14468|
|Country||Document Number||Estimated Expiration||Supplementary Protection Certificate||SPC Country||SPC Expiration|
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