Portable chamber for metered dose inhaler dispensers
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Mar 21, 2000
Grant Date -
N/A
app pub date -
Feb 23, 1998
filing date -
Feb 23, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A medication inhalation apparatus for use with an MDI inhaler includes an elongated housing for receiving a plume of medication particles ejected by the MDI inhaler, a mouthpiece, and an inhalation valve disposed between the mouthpiece and the housing. An exhalation valve in the mouthpiece allows exhalation through the mouthpiece, presenting very little resistance to the exhalation effort of the patient. An adapter receives and stabilizes a mouthpiece of the MDI inhaler. The inhalation valve includes an inhalation membrane hanging adjacent to a valve seat. Exhalation into the mouthpiece presses the inhalation membrane against the valve seat, forcing exhaled gas through the exhalation valve. Inhalation causes the inhalation membrane to swing away from the valve seat and mostly out of a path of the medication plume. Impaction of medication particles against the inhalation membrane is avoided, and very little resistance is presented to the inhalation effort of the patient.
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