Surgery – Liquid medicament atomizer or sprayer – Spray impinged against baffle in or adjacent flow conduit
Patent
1996-02-13
1998-10-20
Weiss, John G.
Surgery
Liquid medicament atomizer or sprayer
Spray impinged against baffle in or adjacent flow conduit
12820021, 12820014, 239338, A61M 1100
Patent
active
058231790
ABSTRACT:
An apparatus and method for providing a nebula or aerosol to a patient. In one aspect, a nebulizer is pressure sensitive so that nebulization is coordinated with a breathing cycle of the patient. The nebulizer includes a movable gas diverter that diverts pressurized gas across a liquid outlet. The diverter is moved in response to the patient's breathing cycle. In one aspect, a biasing member moves the diverter. According to another aspect of the nebulizer, an annular liquid orifice disperses an aerosol in a radial direction in response to a pressurized gas flow from an orifice located concentrically thereto. Multiple liquid orifices may be provided. In a further aspect of the nebulizer, a reservoir includes an upper, wide portion and a lower narrow portion to apply relatively uniform pressure at a liquid orifice.
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Communication Relating to the Results of the Partial International Search, dated Jun. 18, 1997.
Baran George
Foley Martin P.
Grychowski Jerry R.
1263152 Ontario Inc.
Srivastava V.
Weiss John G.
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