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Nebulizer with auxiliary gas input

  • US 4,767,576 A
  • Filed: 11/06/1986
  • Issued: 08/30/1988
  • Est. Priority Date: 10/15/1984
  • Status: Expired due to Fees
First Claim
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1. A nebulizer for inhalation therapy comprising a mixer housing having a mixing chamber therein with an open end, said housing having first and second input ports,a venturi tube mounted in said open end, said venturi tube including an input end having an entrance surface tapering inwardly toward the axis of said tube and toward said open end,nozzle means in said chamber connected to said first port for projecting a first stream of high velocity oxygen from said first port along a first axis in said chamber,an aspirating conduit having an end in said chamber adjacent said nozzle means and adapted to be connected to a body of liquid for flowing liquid to said first stream at a point adjacent said nozzle means, thereby entraining liquid in said first stream,means for projecting a second stream of compressed air into said chamber in proximate relation to said nozzle means,deflector means in the path of said second stream and being configured and arranged for deflecting said second stream in a downwardly swirling path toward said entrance surface in a direction substantially parallel to said first stream and along a second axis adjacent the axis of said first stream, whereby said first and second streams are mixed with fluid in said chamber to provide a moisturized oxygen enriched air mixture, and,means for discharging said moisturized mixture from said chamber,said deflector means being oriented to direct said second stream along an axis intersecting said entrance surface of the venturi tube,said deflector means including an input fitting for said second stream having an axis transverse to said first mentioned axis, and means on said deflector means for redirecting air from said input fitting,said deflector means comprising a channel-shaped member having a web in proximate relation to said nozzle means and first and second side walls, said web and side walls being configured to redirect said second stream in said downwardly swirling path toward said entrance surface.

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