| 主权项 |
1. A resilient cushion that is structured to engage the face of a patient and to form a seal between the face of the patient and a supply apparatus that is structured to provide a flow of breathing gas to an airway of the patient, the cushion comprising:
a deformable bellows portion comprising a first deformable element and a second deformable element connected together at a vertex, the bellows portion extending about the perimeter of a region which, when the cushion is engaged with the face, is structured to be an enclosed region situated between the face and the supply apparatus; the first deformable element comprising a first leg that extends from the vertex, the first deformable element being structured to be engaged with the face of the patient; the second deformable element comprising a second leg that extends from the vertex, the second deformable element being structured to be engaged with the supply apparatus; and at least one of the first leg and the second leg having formed therein an indentation that extends along at least a portion of the perimeter and that provides a localized region of reduced stiffness that is localized along the perimeter at a location that is structured to be situated generally in the vicinity of the bridge of the nose. |
