Patent ID: 8613280
Filing Date: 2013-12-24
Classification: A61M,A62B,Y10T

Abstract:
1. A cushion for a patient interface that delivers breathable gas to a patient, the cushion including nasal bridge, side of nose, upper cheek, lower cheek and chin regions, the cushion defining, at least in part, a breathing cavity, the cushion comprising: a face-contacting membrane including nasal bridge, side of nose, upper cheek, lower cheek and chin regions forming a continuous sealing structure to form a continuous seal on nasal bridge, side of nose, upper cheek, lower cheek and chin regions of the patient's face, the membrane having an inner edge that defines a triangular-shaped aperture; and a support structure to support the face-contacting membrane, the support structure including: wherein, in a cross-sectional view, a widest point of the cushion is an external surface of the underlying cushion or face-contacting membrane, and the base wall is internally offset, with respect to the widest point of the cushion, wherein the cushion has only a single-walled construction formed by the face-contacting membrane in a majority of the chin region so as to allow the face-contacting membrane to readily flex in the chin region of the cushion without restraint due to the underlying cushion.