Inhalation valve

Details Inhalation valve Inhalation valve

A - Human Necessities

61

M

128/64

A61M 11/00 (2006.01) A61M 13/00 (2006.01) A61M 15/00 (2006.01)

Patent

CA 1184460

Abstract An inhalation valve is presented for use with a known antiasthmatic medication cartridge and mouthpiece to simplify patient inhalation and to improve mist forma- tion. A cylindrical passageway receives the known mouth- piece 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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