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Lung therapy device

  • US 9,050,434 B2
  • Filed: 05/15/2008
  • Issued: 06/09/2015
  • Est. Priority Date: 05/18/2007
  • Status: Active Grant
First Claim
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1. A lung therapy device for delivering continuous positive airway pressure, the lung therapy device comprising:

  • a gas connector to receive a continuous positive flow of gas;

    a means for dividing said continuous positive flow of gas into two distinct continuous positive flow streams;

    a means for restricting the continuous positive flow of at least one of said two distinct continuous positive flow streams;

    a housing fluidly connected to at least one of said two distinct continuous positive flow streams and comprising a proximal end chamber located at a proximal end of said housing and a distal end chamber located at a distal end of said housing;

    said housing being devoid of valves that move during the therapy;

    said proximal end chamber having a patient opening which therethrough a patient may inhale inspiratory gas into said patient'"'"'s airways and exhale expiratory gas from said patient'"'"'s airways;

    said patient opening in said proximal end chamber further being fluidly connectable to a patient interface connector;

    said distal end chamber comprises;

    a substantially flat, substantially circular end wall which is substantially perpendicular to the axial dimension of the housing,a gas inlet port located in said substantially flat, substantially circular end wall and fluidly connectable to one of said two distinct continuous positive flow streams, anda plurality of entrainment ports open to ambient air, wherein the plurality of entrainment ports are located in said substantially flat, substantially circular end wall and arranged so that all ambient air entering the distal end chamber through the plurality of entrainment ports enters the distal end chamber substantially parallel with an axial dimension of the housing defined between the proximal end and the distal end of the housing;

    said housing further having a pressure monitoring port located at said distal end, said pressure monitoring port being substantially parallel with the axial dimension;

    said housing further containing an amplification chamber connecting said proximal end chamber to said distal end chamber which is shaped such that the flow of gas passing therethrough is amplified;

    said housing further containing a port connectable to a nebulizer; and

    a means for connecting said nebulizer to at least one of said two distinct continuous positive flow streams.

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