# US 11,298,500 B2 · Valve arrangement for full face mask > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,298,500 B2 - Document ID: US11298500B2 - Status: Granted - Kind: B2 - Application number: 16/498,560 - Filed: 2018-03-20 - Published: 2020-02-13 - Granted: 2022-04-12 - Earliest claimed: 2017-03-28 - Assignees: Koninklijke Philips N.V. - Applicants: Koninklijke Philips N.V. - Inventors: Kevin Daniel Himes; Derrick Blake Andrews; Robert Earl Hieber - Web page: https://patentgrep.com/patent/US11298500B2 ## CPC - A61M 16/06: Respiratory or anaesthetic masks - A61M 16/208: {Non-controlled one-way valves, e.g. exhalation, check, pop-off non-rebreathing valves} - A61M 16/0683: {Holding devices therefor} - A61M 16/0816: {Joints or connectors} - A61M 16/0875: {Connecting tubes} - A61M 2202/0225: Carbon oxides, e.g. Carbon dioxide - F16K 15/16: with tongue-shaped laminae - F16K 27/0209: {Check valves or pivoted valves} - 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)} - F16K: VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING {(devices for emptying and evacuating the excess liquid in valves or conduits F16L55/07)} ## Abstract A valve arrangement (60) is for a patient interface device (10) having a frame portion (16). The valve arrangement includes a valve member (36) having a coupling portion (44) and a blocking portion (46) extending from the coupling portion. The coupling portion of the valve member is structured to be coupled to the frame portion. The blocking portion is structured to move between a first position and a second position. The valve arrangement further includes a guard member (40) having a coupling portion (48) and a protecting portion (50) extending from the coupling portion of the guard member. The coupling portion of the guard member is structured to be coupled to the frame portion. When the blocking portion of the valve member moves from the first position toward the second position, the blocking portion moves toward the protecting portion of the guard member. ## Claims ### Claim 1 A patient interface device for use in delivering a flow of breathing gas to an airway of a patient, the patient interface device comprising: (a) a sealing portion adapted to sealingly engage about at least a mouth of the patient; (b) a frame portion supporting the sealing portion and defining a cavity therein which is adapted to receive the flow of breathing gas prior to passing to the airway of the patient and having an aperture therein, the aperture being positioned and structured to allow passage of ambient air into the cavity from the surrounding environment; and (c) an anti-asphyxia arrangement comprising: (1) a valve member having a coupling portion and a blocking portion extending from the coupling portion, the coupling portion being coupled to the frame portion, the blocking portion being structured to move between: (i) a first position wherein the blocking portion seals about the aperture and prevents the ambient air from passing through the aperture, and (ii) a second position wherein at least a portion of the blocking portion is spaced from the aperture, thus allowing ambient air to pass through the cavity into the aperture, and (2) a guard member having a coupling portion and a protecting portion extending from the coupling portion, the coupling portion being coupled to the frame portion, wherein the protecting portion of the guard member is configured to be positioned and is structured to be disposed between the blocking portion of the valve member and the mouth of the patient when the sealing portion is sealingly engaged about at least the mouth of the patient, and wherein, when the blocking portion of the valve member moves from the first position toward the second position, the blocking portion moves toward the protecting portion of the guard member. ### Claim 2 (depends on 1) The patient interface device according to claim 1, wherein the coupling portion of the guard member is coupled to the frame portion by a snap-fit mechanism. ### Claim 3 (depends on 1) The patient interface device according to claim 1, wherein the coupling portion of the valve member is coupled to the coupling portion of the guard member. ### Claim 4 (depends on 1) The patient interface device according to claim 1, wherein the protecting portion has one or more thru holes. ### Claim 5 (depends on 1) The patient interface device according to claim 1, further comprising a headgear and at least one clip member; and wherein the at least one clip member is coupled to the headgear and the coupling portion of the guard member. ### Claim 6 (depends on 5) The patient interface device according to claim 5, further comprising at least one magnetic material provided in or on the at least one clip member; wherein the anti-asphyxia arrangement further comprises a magnetic material provided in or on the coupling portion of the guard member; and wherein the at least one magnetic material provided in or on the at least one clip member interacts in an attractive manner with the magnetic material provided in or on the coupling portion of the guard member in order to couple the at least one clip member to the coupling portion of the guard member. ### Claim 7 (depends on 1) The patient interface device according to claim 1, wherein the coupling portion of the guard member further has a body portion extending through and being coupled to the frame portion.