Patent ID: 8539951

Claim:
An oscillating positive respiratory pressure apparatus comprising: a housing having an interior chamber; a chamber inlet in communication with the chamber; a chamber outlet in communication with the chamber; an exhalation flow path defined between the inlet and the outlet; and, a restrictor member rotatably mounted within the interior chamber, the restrictor member having an axis of rotation substantially perpendicular to the exhalation flow path at the inlet or the outlet and being rotatable through a complete revolution, the restrictor member having at least one blocking segment; wherein the restrictor member is movably positioned with respect to one of the inlet or the outlet such that rotation of the restrictor member moves the at least one blocking segment between an open position where the exhalation flow path at the one of the inlet or the outlet is unrestricted and a closed position where the exhalation flow path at the one of the inlet or the outlet is restricted, and wherein exhalation pressure at the inlet oscillates between a minimum when the at least one blocking segment is in the open position and a maximum when the at least one blocking segment is in the closed position.