Patent ID: 8439031

Claim:
A patient interface assembly for communicating pressurized gas from a gas delivery system to a patient, the patient interface assembly comprising: a patient interface appliance that is physically separate and discrete from the gas delivery system; a proximate portion of a patient circuit that delivers pressurized gas from the gas delivery system to the patient interface appliance; a headgear assembly that is physically separate and discrete from the gas delivery system, the head gear assembly being configured to mount the patient interface appliance on a user; and a control interface configured to provide a control signal to the gas delivery system that adjusts one or more of a humidifier control, a pressure relief control, a ramp control, or an oxygen concentration level control, the control interface being provided on a leash associated with the headgear assembly and comprising a manually actuatable element provided on an exposed surface, wherein the control signal is provided by the control interface responsive to manual manipulation of the manually actuatable element.