Patent ID: 6656129
Filing Date: 2003-12-02
Classification: A61B,A63B

Abstract:
A flow based incentive spirometer through which a patient withdraws inspiratory air for receiving respiratory therapy, comprising:an air flow rate chamber for setting an inspiratory air flow rate to permit a patient to inhale inspiratory air at a predetermined rate of air flow; said air flow rate chamber including an inlet opening and an air-flow-metering aperture for controlling the rate of air flow therethrough, said air flow rate chamber further including a plurality of mutually exclusively patient positionable air-flow-control orifices of different sizes selectively positionable in fluid communication with said air-flow-metering aperture to control the rate of air flow therethrough; a monitoring chamber in fluid communication with said air flow rate chamber to receive inspiratory air passed through said inlet opening in fluid communication therewith; and said monitoring chamber including an indicator responsive to the flow rate of inspiratory air passed from an outlet of said monitoring chamber and the air-flow-metering aperture into said air flow rate chamber to enable a patient to monitor the rate of flow of inspiratory air being drawn into the spirometer.