Oscillating positive respiratory pressure device

A respiratory treatment device comprising:

• a housing enclosing a chamber;
• an inlet configured to receive a flow of air into the chamber;
• an outlet configured to permit the flow of air to exit the chamber;
• a blocking member moveable relative to the outlet during a single period of exhalation repeatedly between a closed position where the flow of air through the outlet is restricted, and an open position where the flow of air through the outlet is less restricted;
• at least one vane rotatably mounted in the housing, the at least one vane being configured to move the blocking member during the single period of exhalation repeatedly between the closed position and the open position in response to the flow of air;
• wherein the at least one vane comprises a turbine having a plurality of vanes;
• and wherein the blocking member is prohibited from completing a full revolution.

A method of performing respiratory treatment, the method comprising:

• passing a flow of air through a device having an inlet configured to receive a flow of air into a chamber through the inlet, a first outlet configured to permit the flow air to exit the chamber through the first outlet, and a second outlet configured to permit the flow of air to exit the chamber through the second outlet;
• rotating a vane mounted within the device in response to the flow of air through the device during a single period of exhalation repeatedly between a first position where the flow of air is directed to exit the chamber through the first outlet, and a second position where the flow of air is directed to exit the chamber through the second outlet;
• and,
• moving a blocking member disposed on the vane relative to the chamber inlet during the single period of exhalation repeatedly between a closed position where the flow of air through the chamber inlet is restricted, and an open position where the flow of air through the chamber inlet is less restricted.