Patent ID: 6581598
Filing Date: 2003-06-24
Classification: A61M,A63B

Abstract:
A positive expiratory pressure therapy device for inducing an oscillatory expiratory air pressure from a patient, comprisingan airflow tube having an inlet opening through which a patient to be treated inhales inspiratory air, and a patient input opening through which a patient inhales to draw inspiratory air into said air flow tube and through which a patient exhales to discharge expiratory from said air flow tube; a one-way valve carried at said air flow tube inlet opening to allow inspiratory air to be drawn therethrough, but to block the passage of expiratory air therethrough; said air flow tube further including a non-linear discharge orifice which is closed during the passage of inspiratory air through said inlet opening, and opened in response to the discharge of expiratory air; and control means for controlling the opening and closing of said non-linear discharge orifice in response to the pressure of the expiratory air discharged into said patient input opening.