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HIGH FREQUENCY OSCILLATION RESPIRATORY THERAPY

  • US 20080245368A1
  • Filed: 04/02/2008
  • Published: 10/09/2008
  • Est. Priority Date: 04/02/2007
  • Status: Active Grant
First Claim
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1. A respiratory therapy device comprising:

  • a housing defining a primary passageway having a patient interface side;

    a flow diverter structure maintained by the housing in fluid communication with the primary passageway opposite the patient interface side, wherein the flow diverter structure is characterized by the absence of a venturi tube;

    a high frequency pressure port maintained by the housing and configured for fluid connection to a source of oscillatory gas flow, the high frequency pressure port being fluidly associated with the flow diverter structure; and

    an entrainment port maintained by the housing and openable to ambient air, the entrainment port being fluidly associated with the flow diverter structure;

    wherein the device is configured such that flow characteristics of gas flow from an external source are altered upon interacting with the flow diverter structure to create a pressure drop for drawing in ambient air through the entrainment port in delivering a percussive pressure therapy to the patient interface side of the primary passageway.

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