Patent ID: 6708690
Filing Date: 2004-03-23
Classification: A61M

Abstract:
A high frequency pressure oscillation device comprising:a patient circuit having a first end adapted to be coupled a source of breathing gas and a second end adapted to be coupled to an airway of a patient, wherein the patient circuit carries a flow of breathing gas between the source and the airway of such a patient; a valve disposed in the patient circuit between the first end and the second end and configured so as to communicate such a source of breathing gas with an airway of a patient via the patient circuit responsive to the valve being in a first position within the patient circuit and to at least partially restrict communication of such a source of breathing gas with an airway of a patient responsive to the valve being in a second position within the patient circuit, the valve being disposed in the patient circuit and configured such that rotating the valve in a first direction alternatively places the valve in the first position and in the second position; and a rotating drive assembly operatively coupled to the valve to rotate the valve in the first direction such that the valve is alternatively disposed in the first position and in the second position; a first blower having an inlet and outlet as the source of breathing gas; and a second blower having an inlet communicating with ambient atmosphere and an outlet, wherein the valve is adapted to communicate the outlet of the first blower with an airway of a patient and communicates the inlet of the first blower with the outlet of the second blower responsive to the valve being in the first position, and wherein the valve is adapted to communicate the inlet of the first blower with an airway of a patient and communicates the outlet of the first blower with the outlet of the second blower responsive to the valve being in the second position.