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|Title:||Atomizing devices and methods|
|Abstract:||A metered dose inhaler comprises a piston which is mounted in a cavity within a body, and is urged by a pre-loaded spring into a reduced cross-section pressure chamber. The piston may be loaded by means of an actuating rod having a handle, and may be latched in a loaded position by a latching means. A liquid drug (e.g. in aqueous solution) is contained in a collapsible bag. Metered quantities of the drug are successively presented in the pressure chamber, and then subjected to a sudden and great increase in pressure, to eject the liquid drug through an atomising head, to reduce it to fine atomised spray of small mean particle size--for example less than 30 micrometers. Non-return valves control the flow of liquid through the device. The sudden pressure pulse is caused be releasing the spring loaded piston, upon depressing an actuating button connected by the latching means.|
|Inventor(s):||Weston; Terence Edward (Woodbridge, GB2), Dunne; Stephen Terence (Ipswich, GB2)|
|Assignee:||Boehringer Ingelheim International GmbH (DE)|
Patent Claim Types:|
see list of patent claims
|Device; Delivery; Use;|
|Country||Document Number||Estimated Expiration||Supplementary Protection Certificate||SPC Country||SPC Expiration|
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