Patent ID: 7699054

Claim:
An oscillatory positive expiratory pressure therapy device, comprising: an air-flow tube having a path of air flow movement from an inlet opening for receiving expiratory air passed thereto by a user receiving respiratory therapy or care, through an outlet opening for discharging the expiratory air passed through said inlet opening; said air-flow tube including expiratory air responsive closure means positioned in said path of air flow movement and actuable between an open position and a closed position in response to the pressure of expiratory air passed thereto; said expiratory air responsive closure means including a normally closed non-linear discharge outlet which is opened in response to the presence of a predetermined pressure of expiratory air being passed in said path of air flow movement, and which closes in response to a predetermined rate of air pressure decrease through said non-linear discharge opening; and wherein said expiratory air responsive closure means positioned in said path of air flow movement and actuable between an open position and a closed position in response to the pressure of expiratory air passed thereto comprises an oscillatory rocker assembly including a rocker portion having a cone-shaped air-flow closure member pivotally supported on a rocker support portion to engage a tapered bell-shaped air-discharge outlet to form said non-linear air discharge outlet.