Abstract: A respiratory therapy device in accordance with this disclosure includes a blower box and a patient circuit. The blower box is configured to provide aerosol and pressurized gas for delivery to a patient airway. The patient circuit is configured to deliver the aerosol and pressurized gas from the blower box to the patient airway.

Abstract: A system for providing continuous high frequency oscillation therapy is disclosed. A pulse generator comprises a valve stem which fluidly connects two ports when pressure in one of the two ports exceeds a threshold force. Fluidic connection between the two ports allows for fluid to flow back through an orifice and a needle valve to the pulse generator, the orifice and needle valve are components external to the pulse generator. Gases flowing through the needle valve and to the pulse generator apply a force on a diaphragm which deforms and pushes a valve button when gases flowing through the needle valve exceed a threshold. Motion of the valve button due to deformation of the diaphragm causes the valve button to exert force on the valve stem reducing fluid flow between the two ports.