Metered dose inhalation unit with slide means

Details Metered dose inhalation unit with slide means Metered dose inhalation unit with slide means

1990-12-18

1991-08-20

Burr, Edgar S.

Surgery

Liquid medicament atomizer or sprayer

Pre-pressurized container holding medicament

12820014, A61M 1100

Patent

active

050405276

ABSTRACT:
An apparatus for dispensing a measured amount of a spray-entrapped product, typically dispensed by a metered dose inhaler device, includes an elongated passageway having a mouthpiece portion and a main chamber portion. The metered dose inhaler is mounted between the mouthpiece and main chamber portions such that upon operation its spray is directed away from the mouthpiece. A two-position valve is provided to allow a first, low-level flow to be developed through the unit, followed by a higher flow rate as the metered dose inhaler unit is operated. This increased flow, passing through the device in the direction opposite to that of the MDI spray, contacts the spray plume to cause a high level of mixing and a decrease in spray particle size which results in an efficient draw of the spray medication into the lungs of the user.

REFERENCES:
patent: 3456646 (1969-07-01), Phillips
patent: 3592357 (1971-07-01), Welch
patent: 3789843 (1974-02-01), Armstrong
patent: 3809294 (1974-05-01), Torgeson
patent: 3897779 (1975-08-01), Hansen
patent: 3994421 (1976-11-01), Hansen
patent: 4292966 (1981-10-01), Mono
patent: 4484577 (1984-11-01), Sackner
patent: 4534343 (1985-08-01), Nowacki et al.
patent: 4592348 (1986-06-01), Waters
patent: 4706663 (1987-11-01), Makiej
patent: 4796614 (1989-01-01), Nowaeki
patent: 4852561 (1989-08-01), Sperry

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