Ventilation arrangement for patient interface

A patient interface includes an inflation chamber, a seal-forming structure configured to form a seal with a region of a patient's face surrounding an entrance to an airway of the patient, and a ventilation structure configured to allow gas exhaled by the patient to flow from an interior of the inflation chamber to an ambient environment. The plenum chamber includes a front portion including an inlet configured to receive a flow of air at a therapeutic pressure for breathing by a patient. The vent structure is configured, in use, to exhaust a flow of gas from an interior of the plenum in a substantially outboard direction. The patient interface also includes a deflector configured to redirect a flow of gas exiting from the outside. The patient interface also includes a diffuser to diffuse the exhausted gas flow. 一种患者接口，包括充气室、密封形成结构和通气结构，该密封形成结构被配置成与患者的面部的包围患者的气道的入口的区域形成密封，该通气结构被配置成允许患者呼出的气体从充气室的内部流动到周围环境。充气室包括前部分，该前部分包括入口，该入口被配置成接收处于治疗压力下的空气流以供患者呼吸。通气结构被配置成在使用中在基本上外侧方向上从充气室的内部排出气体流。患者接口还包括偏转器，该偏转器被配置成重定向在外侧排出