Oro-nasal patient interface

A patient interface to provide breathable gas to a patient, comprising:

• a cushion assembly, comprising:
• a nasal cushion having a concave shape between a first lateral side and a second lateral side to receive and seal against an inferior periphery of the patient's nose, the nasal cushion including a nasal opening configured to direct breathable gas to the patient's nares in use;
• a nasal plenum chamber and the nasal cushion forming a nasal gas chamber;
• an oral cushion configured to contact and seal against the patient's face surrounding the patient's mouth, the oral cushion including an oral opening configured to direct breathable gas to the patient's mouth in use;
• an oral plenum chamber and the oral cushion forming an oral gas chamber, the nasal gas chamber and the oral gas chamber being pneumatically connected within the cushion assembly;
• and
• an anterior opening positioned opposite the oral opening to receive breathable gas;
• a positioning and stabilizing structure including a pair of upper side straps, a pair of lower side straps, and a pair of clips;
• and
• a unitary plate member removably connected to the cushion assembly, the unitary plate member including a connection port configured to be removably connected to an air delivery tube, the connection port being configured to receive breathable gas from the air delivery tube and direct breathable gas into the cushion assembly through the anterior opening for breathing by the patient during use, the unitary plate member including an upper portion having a pair of upper attachment features and a lower portion having a pair of lower attachment features, each of the upper side straps being removably connected to a corresponding one of the upper attachment features, each of the lower side straps being removably connected to a corresponding one of the clips, each of the clips being removably connected to a corresponding one of the lower attachment features, and the upper portion of the unitary plate member contacting the nasal plenum chamber to support the nasal cushion against the patient's face in use.

A patient interface to provide breathable gas to a patient, comprising:

• a cushion assembly, comprising:
• a nasal plenum chamber including a nasal cushion having a concave shape between a first lateral side and a second lateral side to receive and seal against an inferior periphery of the patient's nose, the nasal cushion including a nasal opening configured to direct breathable gas to the patient's nares in use;
• an oral plenum chamber including an oral cushion configured to contact and seal against the patient's face surrounding the patient's mouth, the oral cushion including an oral opening configured to direct breathable gas to the patient's mouth in use;
• an anterior opening positioned opposite the oral opening to receive breathable gas;
• a positioning and stabilizing structure including upper straps, lower straps, and clips;
• and
• a faceplate having a connection port configured to be removably connected to an air delivery tube, the connection port being configured to receive breathable gas from the air delivery tube and direct breathable gas into the cushion assembly through the anterior opening for breathing by the patient during use, the faceplate having a pair of lower attachment features, each of the lower straps being removably connected to a corresponding one of the clips, each of the clips being removably connected to a corresponding one of the lower attachment features;
• a top plate having a pair of upper attachment features, each of the upper straps being removably connected to a corresponding one of the upper attachment features;
• and
• a connection portion that joins the top plate and the faceplate to form a unitary structure that is removably connected to the cushion assembly,
• wherein the top plate contacts the nasal plenum chamber to support the nasal cushion against the patient's face in use.