Patient interface including flow generator

A patient interface for treating a patient with a respiratory disorder, comprising:

• a respiratory pressure therapy (RPT) device including an electric blower configured to generate pressurized breathable air;
• a user interface structure configured to engage against the patient's face, the user interface structure at least partially forming a plenum chamber configured to receive the pressurized breathable air;
• a head-mounted interface configured to substantially cover the eyes of the patient;
• a flow generator casing that at least partly encloses the head-mounted interface and the electric blower and is connected to the plenum chamber, the flow generator casing including at least one air opening to receive ambient air for delivery to the RPT device;
• a positioning and stabilising structure configured to maintain the user interface structure in a therapeutically effective position,
• wherein the user interface structure includes a stability cushion component and a therapy cushion component that is separate and distinct from the stability cushion component,
• wherein the stability cushion component is configured to extend about a periphery of the patient's eyes and form a viewing opening to the head-mounted interface,
• wherein the therapy cushion component is configured to form the plenum chamber and form a seal with the patient's nose and/or mouth, and
• wherein the stability cushion component is configured to removably and interchangeably couple with the flow generator casing, and the therapy cushion component is configured to removably and interchangeably couple with the stability cushion component and/or the flow generator casing;
• and
• a manifold configured to form an airflow path to convey the pressurized breathable air from the electric blower to the therapy cushion component,
• wherein the manifold includes a first opening and a second opening that is oriented substantially perpendicular to the first opening such that the airflow path is configured to extend in an inferior direction through the first opening and into a posterior direction through the second opening, and
• wherein the manifold includes a retainer part along the second opening configured to removably engage a retainer part provided to the therapy cushion component.