| 摘要 |
A respiratory therapy device is disclosed. The device comprises a housing, a flow diverter, a high frequency pressure port, and an entrainment port. The housing defines a primary passageway which has a patient interface side. The flow diverter structure is maintained by the housing in fluid communication with the primary passageway opposite the patient interface side. The flow diverter structure is characterized by the absence of a venturi tube. The high frequency pressure port is maintained by the housing and configured for fluid connection to a source of oscillatory gas flow. The high frequency pressure port is fluidly associated with the flow diverter structure. The entrainment port is maintained by the housing and openable to ambient air and fluidly associated with the flow diverter structure. 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. |
