Breath-activated inhalation device

Details Breath-activated inhalation device Breath-activated inhalation device

1990-08-07

1991-10-29

Burr, Edgar S.

Surgery

Liquid medicament atomizer or sprayer

Pre-pressurized container holding medicament

12820014, A61M 1100

Patent

active

050606433

ABSTRACT:
Upon inhalation of air from the interior of a housing, a flexible diaphragm-type valve exposed to the ambient air surrounding the housing is moved inwardly due to the difference in ambient air pressure to that in the housing to expose the interior of the housing to the ambient air which is then drawn into the housing. Upon movement of the valve, it strikes a lever connected to a toggle linkage arrangement, causing the lever to pivot to break the toggle linkage, enabling a coil spring to extend and move a dispensing nozzle into contact with the valve stem of a medicant-containing, aerosol valve actuated, bottle. The valve stem is urged upwardly by the nozzle and moved into the interior of the bottle dispensing a dose of the medicant to be mixed with the inhaled air, which is inhaled by the user. The bottle is housed in a storage chamber having a reciprocably sliding cap mounted therein which can be manually moved to reset the nozzle and toggle linkage in its locked position, to prevent the nozzle from opening the aerosol valve and ready the device to dispense a dose of medicant once inhalation is repeated.

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