Compact oronasal patient interface

1. A mask system for delivery of respiratory therapy to a patient, the mask system comprising:

a patient interface assembly that defines a breathing chamber to contemporaneously provide air to both a nose of the patient and a mouth of the patient, the patient interface assembly being both shaped to mount entirely below a nasal bridge of the patient to avoid the nasal bridge of the patient when the mask system is worn by the patient and shaped to mount against a front of a chin of the patient below a lower lip of the patient when the mask system is worn by the patient, the patient interface assembly including:

a one-piece structure formed from a flexible silicone material that includes a nasal assembly and a mouth covering assembly that are integrally formed from the flexible silicone material, the one-piece structure being a single molded structure formed from the silicone material, the nasal assembly being shaped to form a nasal seal with the flexible silicone material through contact by the flexible silicone material with an underside of the nose of the patient and to provide air from the breathing chamber to the nose of the patient, the nasal assembly defining a nasal aperture that communicates with the breathing chamber, while the mouth covering assembly is shaped to form an oral seal with the flexible silicone material through contact by the flexible silicone material with the face of the patient around the mouth of the patient by sealing above an upper lip of the patient and below the lower lip of the patient at the front of the chin of the patient with the flexible silicone material, the mouth covering assembly shaped to provide air from the breathing chamber to the mouth of the patient and defining a mouth aperture that communicates with the breathing chamber and that is spaced apart from the nasal aperture, wherein a continuous portion of the flexible silicone material separates the mouth aperture from the nasal aperture; and

a rigid frame that is removably attachable to the one-piece structure and is spaced apart from the face of the patient when the patient interface assembly is worn by the patient, the rigid frame being made of a material more rigid than the flexible silicone material, the rigid frame defining a conduit aperture to receive pressurized air into the breathing chamber, the conduit aperture centered within the rigid frame along a horizontal dimension of the rigid frame when the mask system is worn by the patient and viewed from in front of the patient, the rigid frame including an upper-left headgear anchor and a lower-left headgear anchor that is spaced apart from the upper-left headgear anchor, and including an upper-right headgear anchor and a lower-right headgear anchor that is spaced apart from the upper-right headgear anchor;

a conduit to attach to the rigid frame at the conduit aperture and provide pressurized air to the breathing chamber through the conduit aperture; and

a headgear assembly configured to secure the patient interface assembly to both the nose of the patient and the mouth of the patient, the headgear assembly including:

a first portion adapted to connect with the upper-left headgear anchor of the rigid frame and pass from the upper-left headgear anchor upwards between a first ear of the patient and a first eye of the patient when the mask system is worn by the patient;

a second portion adapted to connect with the upper-right headgear anchor of the rigid frame and pass from the upper-right headgear anchor upwards between a second ear of the patient and a second eye of the patient when the mask system is worn by the patient;

a third portion adapted to connect with the lower-left headgear anchor of the rigid frame and pass from the lower-left headgear anchor backwards beneath the first ear of the patient when the mask system is worn by the patient; and

a fourth portion adapted to connect with the lower-right headgear anchor of the rigid frame and pass from the lower-right headgear anchor backwards beneath the second ear of the patient when the mask system is worn by the patient.

2. The mask system of claim 1 , wherein:

the first headgear portion includes a first strap adapted to connect with the upper-left headgear anchor by folding back and attaching to itself with hook and loop material;

the second headgear portion includes a second strap adapted to connect with the upper-right headgear anchor by folding back and attaching to itself with hook and loop material;

the third headgear portion includes a third strap adapted to connect with the lower-left headgear anchor by folding back and attaching to itself with hook and loop material; and

the fourth headgear portion includes a fourth strap adapted to connect with the lower-right headgear anchor by folding back and attaching to itself with hook and loop material.

3. The mask system of claim 2 , wherein:

the upper-left headgear anchor protrudes away from a front face of the rigid frame; and

the upper-right headgear anchor protrudes away from the front face of the rigid frame.

4. The mask system of claim 3 , wherein the patient interface defines a gusset between (i) a first part of the flexible silicone material of the one-piece structure that is adapted to contact the underside of the nose of the patient when the mask system is worn by the patient, and (ii) a second part of the flexible silicone material of the one-piece structure that is adapted to contact the face of the patient around the mouth of the patient when the mask system is worn by the patient, to allow articulation between the first part of the flexible silicone material and the second part of the flexible silicone material.

5. The mask system of claim 1 , wherein a part of the flexible silicone material of the one-piece structure that is adapted to contact the face of the patient around the mouth of the patient to form the oral seal comprises a rounded silicone membrane shaped to tangentially contact the face of the patient under the lower lip of the patient when the mask system is worn by the patient.