A mask apparatus for a respiratory treatment can permit delivery of breathable gas to a user. In one example, the mask may employ a frame and cushion to form a seal for both mouth and nose. The frame may be adapted for coupling with a respiratory treatment apparatus so as to permit communication of a pressurized gas from the respiratory treatment apparatus. The cushion, which may be foam, may have a substantially under the nose configuration or over the nose configuration. The mask may have a common plenum chamber for both nose and mouth. The cushion may further define a centrally open lip superior region. The cushion may be adapted to couple with the frame directly or to the frame in conjunction with a cushion support clip. Various features of the cushion may further promote sealing and comfort for the under the nose design.本發明揭示一種用於呼吸治療之罩裝置，允許輸送可呼吸氣體給使用者。在一範例，該罩可運用一框架與罩墊以形成嘴與鼻兩者的密封。該框架可調適用於耦接一呼吸治療裝置，以使加壓氣體從該呼吸治療裝置流通。該罩墊可為泡棉，該罩墊可有一實質鼻下結構或鼻上結構。該罩可有一用於鼻和嘴兩者的共同氣腔。該墊可更定義一中開上唇區。該墊可調適直接耦接該框架，或連同一墊支撐夾具耦接該框架。該墊的各種不同特徵可進一步促成該鼻下設計的密封與舒適性。
