# US 11,305,081 B2 · Mask bead for a patient interface > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,305,081 B2 - Document ID: US11305081B2 - Status: Granted - Kind: B2 - Application number: 16/211,702 - Filed: 2018-12-06 - Published: 2019-06-06 - Granted: 2022-04-19 - Earliest claimed: 2012-11-29 - Assignees: Loewenstein Medical Technology S.A. - Applicants: Loewenstein Medical Technology S.A. - Inventors: Martin Eifler - Web page: https://patentgrep.com/patent/US11305081B2 ## CPC - 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: 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 Disclosed is a mask bead for a patient interface that comprises a contact area, a nose bridge area having a width (B1), side areas, a base area, and a bearing area on a patient. The bearing area extends from the side areas, the base area and the nose bridge area to a central opening is being designed as a sealing lip which frames the central opening. The mask bead further has a maximum width (B2), the ratio B1 to B2 being one to three or greater. ## Claims ### Claim 1 A mask bead for a patient interface, wherein the mask bead comprises a contact area, a nose bridge area having a width (B1), side areas, a base area, and a bearing area on a patient, the bearing area extending from the side areas and the base area and the nose bridge area to a central opening and being designed as a sealing lip which frames the central opening that serves at least for introduction of a nose of the patient, and wherein a wall thickness (W1) in the nose bridge area is ≤0.6 mm and the mask bead has a maximum width (B2), a ratio B1 to B2 being one to three or greater. ### Claim 2 (depends on 1) The mask bead of claim 1, wherein the wall thickness (W1) is 0.25-0.5 mm. ### Claim 3 (depends on 2) The mask bead of claim 2, wherein a height (H1) in the nose bridge area is 20-25 mm. ### Claim 4 (depends on 1) The mask bead of claim 1, wherein the nose bridge area has a width (B1) of 27-37 mm. ### Claim 5 (depends on 1) The mask bead of claim 1, wherein a height (H1) in the nose bridge area is 17-27 mm. ### Claim 6 (depends on 1) The mask bead of claim 1, wherein a height (H4) in the nose bridge area is 14-23 mm. ### Claim 7 (depends on 1) The mask bead of claim 1, wherein the nose bridge area has an arc-shaped contour (R). ### Claim 8 (depends on 1) The mask bead of claim 1, wherein the base area has a wall thickness (W3) of 0.8-1.2 mm and/or a side area has a wall thickness (W2) of 1.5-2.8 mm. ### Claim 9 (depends on 1) The mask bead of claim 1, wherein a height (H3) of the base area is 16-21 mm and/or a height (H6) of the base area is 8.5-13.5 mm. ### Claim 10 (depends on 1) The mask bead of claim 1, wherein a height (H2) of a side area is 12-22 mm. ### Claim 11 (depends on 10) The mask bead of claim 10, wherein the height (H2) of a side area is 14-16 mm. ### Claim 12 (depends on 1) The mask bead of claim 1, wherein a height (H5) of a side area is 6-14 mm. ### Claim 13 (depends on 1) The mask bead of claim 1, wherein a wall thickness in a side area decreases continuously from a base (W2) toward a bearing area (W4). ### Claim 14 (depends on 1) The mask bead of claim 1, wherein the bearing area has an approximately constant wall thickness (W4) in a range of 0.2-0.75 mm. ### Claim 15 (depends on 1) The mask bead of claim 1, wherein a ratio of a length (L) of the mask bead to a width (B2) is approximately 1 to 1. ### Claim 16 (depends on 1) The mask bead of claim 1, wherein a width (B2) is approximately in a range of from 50 mm to 65 mm. ### Claim 17 (depends on 16) The mask bead of claim 16, wherein the width (B2) is approximately in a range of from 54 mm to 63 mm. ### Claim 18 (depends on 1) The mask bead of claim 1, wherein a height (H1) in the nose bridge area is always the same as or greater than a height (H2) of a side area. ### Claim 19 (depends on 1) The mask bead of claim 1, wherein the mask has a length (L) in a range of from 50 mm to 65 mm and a width (B2) in a range of from 50 mm to 63 mm. ### Claim 20 (depends on 19) The mask bead of claim 19, wherein the mask has a length (L) in a range of from 53 mm to 62 mm and a width (B2) in a range of from 53 mm to 63 mm.