Patent ID: 11931514
Assignee: RESMED PTY LTD
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 12:
13. The patient interface structure of claim 1, wherein the frame connecting portion is moulded to the elastomeric cushion,
wherein the height of the frame connecting portion is greater than the height of the mouth cushion aperture,
wherein the air inlet passage is configured to receive the air delivery tube in a vertical direction,
wherein air inlet passage is positioned behind the frame when viewed from a front side of the frame,
wherein the rearwardly facing surface of the frame forms an interior surface of the air inlet passage,
wherein the air inlet passage is arranged so that the pressurized gas enters the air inlet passage in a direction substantially parallel to the rearwardly facing surface of the frame and exits the air inlet passage in a direction substantially perpendicular to the rearwardly facing surface of the frame,
wherein the air inlet passage is in the form of an elbow,
wherein the frame comprises a substantially planar surface that is convex,
wherein the frame is more rigid than the cushion assembly,
wherein the positioning and stabilizing structure comprises a crown strap configured to cup the crown of the patient's head in use,
wherein the attachment points on the frame include a pair of upper connector slots positioned on opposite lateral sides of the frame,
wherein the frame comprises a pair of laterally extending arms, and wherein the upper connector slots are located at respective ends of the laterally extending arms,
wherein the positioning and stabilizing structure comprises a pair of upper side straps configured to extend over the patient's ears in use, and wherein the upper connector slots are configured to secure the upper side straps to the frame,
wherein the positioning and stabilizing structure comprises a pair of lower side straps configured to be secured to the respective attachments points on the frame and extend below the patient's ears in use, wherein the positioning and stabilizing structure comprises a rear panel configured to be positioned at a rear of the patient's head in use, and wherein the upper and lower side straps are connected to the rear panel,
wherein the air inlet passage comprises an anti-asphyxia valve comprising a flap configured to cover an aperture in the air inlet passage in use when a flow of breathable gases is delivered to the patient interface structure,
wherein a maximum width of the frame connecting portion is greater than a maximum width of the mouth cushion aperture, and
wherein the nasal seal portion comprises raised portions configured to position the nasal seal in use against the flares of the patient's nostrils.