Oscillating positive expiratory pressure device

A respiratory treatment device comprising:

• a housing having a first section and a second section, the first section and the second section being removably connected;
• an inlet configured to receive air into the housing;
• an outlet configured to permit air to exit the housing;
• a flow path defined between the inlet and the outlet;
• an inner casing positioned in the housing, the inner casing being removable from the first section and the second section;
• and,
• a restrictor member rotatably connected within the inner casing, the restrictor member being configured to move in response to a flow of air along the flow path between a closed position, where the flow of air along the flow path is restricted, and an open position, where the flow of air along the flow path is less restricted.

A respiratory treatment device comprising:

• a housing having a first section and a second section, the first section and the second section being removably connected;
• an inlet configured to receive air into the housing;
• an outlet configured to permit air to exit the housing;
• a flow path defined between the inlet and the outlet;
• an inner casing positioned in the housing, the inner casing being removable from the first section and the second section, and the flow path passing through at least a portion of the inner casing;
• and,
• a restrictor member connected to the inner casing, the restrictor member being configured to move in response to a flow of air along the flow path between a closed position, where the flow of air along the flow path is restricted, and an open position, where the flow of air along the flow path is less restricted.

A respiratory treatment device comprising:

• a housing having a first section and a second section, the first section and the second section being removably connected;
• an inlet configured to receive air into the housing;
• an outlet configured to permit air to exit the housing;
• a flow path defined between the inlet and the outlet;
• an inner casing positioned in the housing, the inner casing being removable from the first section and the second section, and the flow path passing through at least a portion of the inner casing;
• a restrictor member connected to the inner casing, the restrictor member being configured to move in response to a flow of air along the flow path between a closed position, where the flow of air along the flow path is restricted, and an open position, where the flow of air along the flow path is less restricted;
• and,
• a vane rotatably connected to the inner casing, the vane being configured to rotate in response to the flow of air along the flow path, the vane being operatively connected to the restrictor member.