Mask with gusset

摘要

A mask system for delivering air to a user includes a suspension mechanism to allow relative movement between a face-contacting cushion and a mask shell. The suspension mechanism also provides a predetermined force to the cushion that is a function of mask pressure, displacement of the cushion or both.

主权项

1. A respiratory mask for use in respiratory therapy, the respiratory mask comprising:
a shell; and a cushion provided to the shell and adapted to receive at least a patient's nose, the shell and the cushion cooperating to define a cavity adapted to receive a supply of pressurized breathable gas, the cushion including: a face contacting portion adapted to engage a patient's face, a non-face contacting portion provided to the shell, wherein the non-face contacting portion of the cushion includes an edge configured and arranged to attach to a periphery of the shell to define the cavity, and a gusset portion between the face contacting portion and the non-face contacting portion, wherein the gusset portion includes a hanging portion that, when seen in cross-section, hangs over an adjacent exterior surface of the cushion, and wherein the cushion includes a molded, one-piece construction.