Inhalation valve
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 11, 1984
Grant Date -
N/A
app pub date -
Mar 19, 1982
filing date -
Mar 19, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An inhalation valve is presented for use with a known antiasthmatic medication cartridge and mouthpiece to simplify patient inhalation and to improve mist formation. A cylindrical passageway receives the known mouthpiece and is provided with an elastomeric diaphragm having a slit therein. An upstream spider backs up the diaphragm. Upon inhalation the diaphragm flexes and stretches to open the slit, and the diaphragm seals off exhaust passages. On exhalation the diaphragm backs against the spider which seals the slit, the diaphragm moving away from and opening the exhaust passages.
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