PAP system

A PAP system adapted for providing a supply of pressurized respiratory gas to a patient for treatment of sleep disordered breathing, comprising:

• headgear adapted to engage the patient's head;
• a patient interface adapted to be secured to and sealed against a portion of the patient's face, in use, by the headgear;
• a flow generator adapted to be connected to the patient interface and to generate the supply of pressurized gas, in use, wherein the flow generator is adapted to be secured by a portion of the headgear to the patient's head;
• and
• a tube assembly between the flow generator and the patient interface to deliver the pressurized gas generated by the flow generator to the patient interface;
• wherein the tube assembly includes a relatively rigid outlet tube that provides a relatively smooth and fixed internal flow path to provide a relatively even and uninterrupted flow for the pressurized gas,
• wherein the tube assembly further includes a top articulated connector constructed of a relatively soft flexible material and configured to connect a top portion of the outlet tube with an outlet of the flow generator, and a bottom articulated connector constructed of a relatively soft flexible material and configured to connect a bottom portion of the outlet tube with an inlet tube of the patient interface, and
• wherein each of the top and bottom articulated connectors is structured to allow forward and backward movement with respect to the patient's face to accommodate a range of anthropometric variations between patients while substantially preventing lateral or side to side movement with respect to the patient's face for stability.