| 主权项 |
1. A patient interface device, comprising:
a mask including an interface element structured to engage a portion of a face of a patient; and a headgear assembly coupled to the mask, comprising:
a top surface member,a bottom surface member, the top surface member being coupled to the bottom surface member along a perimeter of the top surface member and the bottom surface member to form a fluid delivery housing having an airtight internal chamber, wherein the fluid delivery housing has a central portion and first and second side portions extending from the central portion wherein responsive to the patient interface device being donned by the patient the central portion is configured to rest on a top of the patient's head with the first and second side portions extending downwardly in front of the ears of the patient and forwardly over the cheeks of the patient, wherein the fluid delivery housing is structured to receive a flow of breathing gas from a pressure generating device in the central portion and be fluidly coupled to the interface element to deliver the flow of breathing gas to the interface element, anda plurality of support members provided within and spaced from one another along an entire length of the fluid delivery housing to define a plurality of flow paths through the internal chamber around all the support members, wherein at all times a top surface of each support member engages an inner side of the top surface member and a bottom surface of each support member engages an inner side of the bottom surface member, and wherein the support members are structured to support the top surface member relative to bottom surface member and prevent the internal chamber from collapsing. |
