# US 11,305,083 B2 · Nasal mask system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,305,083 B2 - Document ID: US11305083B2 - Status: Granted - Kind: B2 - Application number: 16/190,337 - Filed: 2018-11-14 - Published: 2019-03-14 - Granted: 2022-04-19 - Earliest claimed: 2011-11-15 - Assignees: ResMed Pty Ltd - Applicants: ResMed Pty Ltd - Inventors: Matthew Eves; Memduh Guney; Rupert Christian Scheiner - Web page: https://patentgrep.com/patent/US11305083B2 ## CPC - A61M 16/0622: {having an underlying cushion} - A61M 16/06: Respiratory or anaesthetic masks - A61M 16/0616: {with face sealing means comprising a flap or membrane projecting inwards, such that sealing increases with increasing inhalation gas pressure} - A61M 16/0825: {with ball-sockets} - A61M 11/00: Sprayers or atomisers specially adapted for therapeutic purposes (in general B05B; {aerosol containers B65D83/14}) - A61M 16/0633: {with forehead support} - A61M 16/0683: {Holding devices therefor} - A61M 16/107: {in the inspiratory path} - A61M 2202/0225: Carbon oxides, e.g. Carbon dioxide - A61M 2202/30: Vaccines - A61M 2205/3569: sublocal, e.g. between console and disposable - A61M 2205/3592: using telemetric means, e.g. radio or optical transmission - A61M 2205/50: with microprocessors or computers - A61M 2205/6054: Magnetic identification systems - A61M 2205/8206: battery-operated - A61M 2205/84: for treating several patients simultaneously - A61M 2230/432: partial CO2 pressure (P-CO2) - A61M 2250/00: Specially adapted for animals - A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)} ## Abstract A mask system includes a cushion for a mask that seals at its upper extent in a region of the nose that is generally above the tip of the nose or pronasale, and extends across a portion of the cartilaginous framework, alar or flares of the patient's nose, e.g., not extending over or across the nasal bone of the patient's nose. ## Claims ### Claim 1 A patient interface configured to deliver a supply of air at positive pressure to an entrance of a patient's airways, the patient interface comprising: (i) a nasal mask including a seal forming structure including a sealing flange constructed and arranged to form a seal on a portion of an upper lip of a patient, and to form a seal on a portion of a cartilaginous framework of a patient's nose, the nasal mask further including a plenum chamber adapted to receive a portion of the patient's nose including the pronasale, wherein the plenum chamber is pressurizable to a therapeutic pressure above ambient air pressure, wherein the plenum chamber includes an attachment region configured to fluidly couple to an air delivery system, wherein the plenum chamber further includes a side wall region extending between the seal forming structure and the attachment region, wherein the seal forming structure and the plenum chamber comprise a one piece molded construction, wherein the seal forming structure and the plenum chamber comprise a flexible, elastomeric material, and wherein the nasal mask further comprises a pair of headgear connectors, each of the pair of headgear connectors disposed on a respective side of the side wall region of the plenum chamber and integrally formed as part of the one piece molded construction; and (ii) a positioning and stabilising structure including a pair of side straps, wherein each of the pair of side straps is structured and arranged to connect to a respective one of the pair of headgear connectors to provide a two-point connection to the nasal mask, and wherein the positioning and stabilizing structure is constructed and arranged to be donned or removed without the pair of side straps passing inferior to the patient's ears. ### Claim 2 (depends on 1) The patient interface according to claim 1, wherein the pair of side straps of the positioning and stabilising structure are sufficiently stretchy or flexible such that they do not require length adjustment to don. ### Claim 3 (depends on 1) The patient interface according to claim 1, wherein the positioning and stabilising structure is substantially floppy. ### Claim 4 (depends on 1) The patient interface according to claim 1, wherein the plenum chamber does not comprise a rigid frame or a rigid shell. ### Claim 5 (depends on 1) The patient interface according to claim 1, wherein the pair of headgear connectors is structured to allow the plenum chamber to rotate or pivot. ### Claim 6 (depends on 1) The patient interface according to claim 1, wherein the positioning and stabilizing structure includes a headgear assembly including the pair of side straps and a rear strap, the pair of side straps adapted to extend along sides of the patient's face between the patient's eyes and ears, and the rear strap extending between the pair of side straps and adapted to engage along a back or posterior region of the patient's head along, below or inferior to the occipital bone. ### Claim 7 (depends on 1) The patient interface according to claim 1, wherein the pair of side straps define a main headgear loop adapted to extend from an inferior anterior position to a superior posterior position. ### Claim 8 (depends on 1) The patient interface according to claim 1, wherein the pair of side straps are constructed and arranged to be donned to the patient's head without being pulled down over the patient's ears or removed from the patient's head without being pulled up over the patient's ears. ### Claim 9 (depends on 1) The patient interface according to claim 1, wherein the pair of side straps are adapted to pass superior to the patient's ears. ### Claim 10 (depends on 1) The patient interface according to claim 1, wherein the seal forming structure includes a nose ridge region adapted to be positioned and seal along a nasal cartilage region which is above the pronasale and below a nasal bone region of the patient's nasal bridge. ### Claim 11 (depends on 1) The patient interface according to claim 1, wherein the seal forming structure includes a superior sealing portion constructed and arranged to be substantially located on the portion of the cartilaginous framework of the patient's nose, and to form a seal therewith without exerting a sealing force that would restrict a flow of air through the nasal cavity. ### Claim 12 (depends on 1) The patient interface according to claim 1, wherein the seal forming structure forms a seal along a nasal ridge without contacting nasal bridge or the skin on the nasal bone. ### Claim 13 (depends on 1) The patient interface according to claim 1, wherein the seal forming structure includes an inferior sealing portion constructed and arranged to be located in part on the portion of the upper lip of the patient and to direct a sealing force to a portion of a maxilla bone of the patient. ### Claim 14 (depends on 1) The patient interface according to claim 1, wherein the seal forming structure is preformed or otherwise pre-shaped so as to conform to a patient's facial topography. ### Claim 15 (depends on 1) A CPAP system comprising a PAP device to generate a supply of air at positive pressure and the patient interface according to claim 1. ### Claim 16 (depends on 15) The CPAP system according to claim 15, further comprising a humidifier to humidify air from the PAP device. ### Claim 17 (depends on 1) The patient interface according to claim 1, wherein each of the pair of headgear connectors includes a thinner wall section to enhance flexibility and bending relative to the side wall region. ### Claim 18 (depends on 1) The patient interface according to claim 1, wherein one or more wall sections of the side wall region between the pair of headgear connectors is thickened to prevent collapse of the side wall region under headgear tension.