JPWO2021010845A5 - - Google Patents

Claims (15)

A non-invasive patient interface configured to deliver pressurized respiratory gas to a patient's mouth and nostrils, comprising:
(a) a seal for sealing around the mouth and nostrils of the patient;
(b) a housing connected to said seal;
(c) a cushion module including an interior volume defined by said seal and said housing; and (d) said seal defining first and second cavities within said interior volume of said cushion module. A non-invasive patient interface comprising a cavity wall disposed within said interior volume. Said cushion module further comprises a preferential deformation area comprising a deformation panel, preferably said deformation panel comprising first and second walls and a connection between said first and second walls. A patient interface according to claim 1 . Said deformation region further comprises first and second elastic regions between which said deformation panel is disposed, preferably said A first wall projects from the first resilient region in a first direction and a second wall projects from the second resilient region in a second direction different from the first direction. 3. A patient interface according to claim 2 , projecting in the direction of . 4. The method of claim 3 , wherein deformation of said deformation regions involves a reduction in spacing between said first and second resilient regions and an associated deformation of said deformation panel to accommodate said reduction in spacing. Patient interface as described. 5. A patient interface according to claim 3 or 4 , wherein the second direction is downwardly slanted from a plane intersecting the second elastic region and the connection. The connecting portion is curved in a rest state aligned with the first direction of the first wall and aligned with an end of the second wall remote from the second resilient region. A patient interface according to any one of claims 3-5 , comprising a profile. Said second wall has a curved profile from said connection to said second elastic region, preferably said second wall extends from said connection to said second elastic region. A patient interface according to any one of claims 3 to 6 , which increases in thickness up to a certain area . Said deformation panel has a wall thickness less than the wall thickness of said first and second elastic regions, preferably said first and second elastic regions are A patient interface according to any one of claims 3 to 7 , having a wall thickness of at least three times the wall thickness of the deformation panel . The deformation area is part of the cavity wall, the cavity wall further comprising a main panel connecting the housing to the first resilient area. patient interface as described in . Preferably said cavity wall further comprises a deflector panel recessed from the rim of the nostril opening and forming a channel configured to direct respiratory gas from said first cavity to said nostril opening. 10. A patient interface according to any one of claims 3-9 , wherein the deflector panel abuts the second resilient region . 11. A patient interface according to claim 10 , wherein the deformation region is arranged to structurally decouple the deflector panel from the main panel. Claims 1-11 , wherein the cavity walls are positioned relative to the nasal and oral openings to allow breathing gas to flow from the first cavity through the nasal openings to the nostrils. A patient interface according to any one of . Claims 1- , wherein the cavity walls are positioned relative to the nasal opening and the mouth opening to allow exhaled respiratory gases from the mouth and nostrils to flow into the second cavity. 13. A patient interface according to any one of clauses 12 to 13. The cushion module further includes an exhaust vent for directing breathing gas from within the cushion module to the exterior of the cushion module, and preferably the second cavity is positioned above the first cavity. A patient interface according to any one of the preceding claims, being an upper cavity and in communication with said exhaust vent, preferably said exhaust vent comprising one or more groups of openings . Said housing includes said exhaust vent, and said cavity wall connection with said housing at least partially surrounds said exhaust vent, preferably said exhaust vent comprises said cavity wall with said housing. 15. A patient interface according to claim 14 , delimited by a connection and a connection between a perimeter of the seal and a perimeter of the housing .