Patient interface and a speech valve therefor

A patient interface configured to be connected to a respiratory therapy system to deliver a flow of breathable gases to a user, the patient interface comprising:

• a mask body;
• a mask seal secured to the mask body and configured to form a seal with a face of the user, at least around a mouth of the user;
• the mask body and mask seal being arranged to define an interior breathing chamber of the patient interface;
• an inlet to the breathing chamber configured to receive a flow of breathable gases into the breathing chamber;
• and
• a user actuatable speech valve operable to selectively occlude and open a speech flow path from the breathing chamber to atmosphere when the user wishes to speak, the speech valve comprising:
• a valve body, the valve body being a region of the mask body surrounding the inlet and comprising at least one vent opening configured to be in fluid communication with the breathing chamber and an ambient environment;
• and
• a sealing member comprising a sealing disc, the sealing member and the at least one vent opening being configured such that the at least one vent opening can be selectively occluded by the sealing disc.