Surgery – Liquid medicament atomizer or sprayer – Gas stream aspirating medicament from reservoir
Patent
1994-02-02
1996-12-03
Asher, Kimberly L.
Surgery
Liquid medicament atomizer or sprayer
Gas stream aspirating medicament from reservoir
12820014, 12820524, 12820321, 292131, 285 3, 137315, A61M 1100, A61M 1500, A62B 902, F16K 4300
Patent
active
055797571
ABSTRACT:
A nebulizer (10) has a housing (12,14) including an aerosol outlet (22) and a bottom wall (52) with a side wall (50) connected thereto defining a reservoir (54) for a liquid (106). A gas jet (58) extends along a longitudinal axis (60) of the housing (12,14) and through the bottom wall (52) of the housing (12,14), the gas jet (58) defining a gas flow lumen (66) having a gas orifice (64) at its distal end. A liquid nozzle (16) having a liquid orifice (102) at a distal end corresponding to the distal end of the gas jet (58) surrounds the gas jet (58). The liquid orifice (102) is spaced from the gas orifice (64) for nebulization of liquid (106) fed to the liquid orifice (102). A diaphragm (126) made of an elastomer has a slit (130) which is biased closed. Cooperating shoulders between the diaphragm (126) and the gas flow lumen (66) maintain the diaphragm (126) in the gas flow lumen (66) with the slit (130) transverse the length of the lumen.
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"Vernay Duckbill Check Valves", Vernay Laboratories, Inc., 1992, #VDB-1192, 4 pp.
McMahon Michael D.
Rustad Andre M.
Asher Kimberly L.
Baxter International Inc.
Bratschun T. D.
Kowalik F. C.
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