# US 2025/0367397 A1 · Patient interface cushion with fabric > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0367397 A1 - Document ID: US20250367397A1 - Status: Published application - Kind: A1 - Application number: 19/305,514 - Filed: 2025-08-20 - Published: 2025-12-04 - Earliest claimed: 2023-11-15 - Assignees: Dcstar Inc - Applicants: Dcstar Inc. - Inventors: David LUO - Web page: https://patentgrep.com/patent/US20250367397A1 ## CPC - A61M 16/0616: {with face sealing means comprising a flap or membrane projecting inwards, such that sealing increases with increasing inhalation gas pressure} - A61M 16/0683: {Holding devices therefor} - A61M 16/06: Respiratory or anaesthetic masks - A61M 16/0611: {with a gusset portion} - A61M 16/0622: {having an underlying cushion} - 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 patient interface cushion and specifically a patient interface cushion with fabric, configured to supply pressurized breathing gas to the nasal and oral airways of a user. The patient interface cushion includes a rigid part, configured to support the elastic part, featuring a first opening and a second opening; The elastic part, configured to provide an attachment surface for the fabric part, featuring a third opening in communication with the second opening and a fourth opening allowing the user's nose and mouth to enter the internal cavity of the elastic part. The fabric part, configured to form a sealing area between the lower lip area and the nasal bridge area, featuring a first surface partially connected to the elastic part, a second surface sealing at least a portion of the user's face, and also having an inner edge and an outer edge. ## Claims ### Claim 1 A patient interface cushion with a fabric part, for delivering pressurized breathing gas to a user's airways, the patient interface cushion with the fabric part comprising: a rigid part configured to provide support to an elastic part, one end of the rigid part having a first opening configured to receive breathing gas from a continuous positive airway pressure device, and an other end having a second opening that communicates with an inner cavity of the elastic part; the elastic part configured to connect with the rigid part and provide an attachment surface for the fabric part, having a third opening adjacent to the rigid part that communicates with the second opening, and a fourth opening away from the rigid part; and the fabric part has a first surface adjacent to an outer surface of the elastic part, and a second surface away from the elastic part; wherein the fabric part comprises an inner edge adjacent to the fourth opening and an outer edge away from the fourth opening, wherein at least part of the inner edge is smaller than or equal to the fourth opening of the elastic part; and wherein distances of displacements at different points on the second surface of the fabric part vary when a same level of pressure is applied to the different points on the fabric part in an X-axis direction. ### Claim 2 (depends on 1) The patient interface cushion with the fabric part according to claim 1, wherein the outer edge has a gradually decreasing thickness to conform to the elastic part. ### Claim 3 (depends on 1) The patient interface cushion with the fabric part according to claim 1, wherein the patient interface cushion comprises an adhesive layer disposed between the outer surface of the elastic part and the first surface of the fabric part, to connect the elastic part and the fabric part. ### Claim 4 (depends on 1) The patient interface cushion with the fabric part according to claim 1, wherein a wall thickness of the elastic part is multilayered. ### Claim 5 (depends on 1) The patient interface cushion with the fabric part according to claim 1, wherein the fabric part comprises an antibacterial material. ### Claim 6 A patient interface cushion with a fabric part, for delivering pressurized breathing gas to a user's airways, the patient interface cushion with the fabric part comprising: a rigid part configured to provide support to an elastic part, one end of the rigid part having a first opening configured to receive breathing gas from a continuous positive airway pressure device, and an other end having a second opening that communicates with an inner cavity of the elastic part; the elastic part configured to connect with the rigid part and provide an attachment surface for the fabric part, and having a third opening adjacent to the rigid part that communicates with the second opening, and a fourth opening away from the rigid part; the fabric part having a first surface adjacent to an outer surface of the elastic part, a second surface away from the elastic part to seal at least a portion of a face of the user, an inner edge adjacent to the fourth opening, and an outer edge away from the fourth opening; and an adhesive layer positioned between the outer surface of the elastic part and the first surface of the fabric part, that connects the elastic part and the fabric part; wherein at least a portion of the inner edge of the fabric part is less than or equal to the fourth opening of the elastic part; and wherein the fabric part has a degree of elasticity and adapts to a curvature change of the elastic part when subjected to pressure, and distances of displacements at different points on the second surface of the fabric part vary when a same level of pressure is applied to different points on the fabric part in an X-axis direction. ### Claim 7 (depends on 6) The patient interface cushion with the fabric part according to claim 6, wherein a side wall of the rigid part is continuous and uniform. ### Claim 8 (depends on 6) The patient interface cushion with the fabric part according to claim 6, wherein a wall thickness of the elastic part is a single layer. ### Claim 9 (depends on 6) The patient interface cushion with the fabric according to claim 6, wherein a material of the fabric part is one or more of cotton fiber, linen, polyester fiber, elastic fiber, nylon fiber, acrylic fiber, vinylon fiber, or polyamide fiber. ### Claim 10 (depends on 6) The patient interface cushion with the fabric part according to claim 6, wherein the fabric part is cut into an approximately annular outline using laser, die-cutting, or ultrasonic methods. ### Claim 11 A patient interface cushion with a fabric part for delivering pressurized breathing gas to a user's airways, the patient interface cushion with the fabric part comprising: a rigid part configured to provide support to an elastic part, one end of the rigid part having a first opening configured to receive breathing gas from a continuous positive airway pressure device, and an other end having a second opening that communicates with an inner cavity of the elastic part; the elastic part configured to connect with the rigid part and provide an attachment surface for the fabric part, having a third opening adjacent to the rigid part that communicates with the second opening, and a fourth opening away from the rigid part; and the fabric part having a first surface adjacent to an outer surface of the elastic part, a second surface away from the elastic part that seals at least a portion of a face of the user, an inner edge of the fabric part adjacent to the fourth opening, wherein at least a portion of the inner edge of the fabric part is greater than or equal to the fourth opening; and wherein the fabric part has one or more of the following characteristics: a surface area of the second surface being at least 3.5% of an outer surface area of the elastic part; a water absorption time less than 30 seconds; and a surface roughness of the second surface having an Ra value between 0.2 and 10 microns. ### Claim 12 (depends on 11) The patient interface cushion with the fabric part according to claim 11, wherein the patient interface cushion further comprises an adhesive layer provided between the outer surface of the elastic part and the first surface of the fabric part, and a connection between the elastic part and the fabric part is detachable. ### Claim 13 (depends on 11) The patient interface cushion with the fabric part according to claim 11, wherein the fabric part has a discontinuous shape and covers only a portion of the elastic part. ### Claim 14 (depends on 11) The patient interface cushion with the fabric part according to claim 11, wherein the first surface of the fabric part is directly and non-detachably connected to the outer surface of the elastic part, and the direct connection between the elastic part and the fabric part is implemented via silicone adhesive, thermal pressing, or molding. ### Claim 15 A patient interface cushion with a fabric part for delivering pressurized breathing gas to a user's airways, the patient interface cushion with the fabric part comprising: a rigid part configured to provide support to an elastic part, one end of the rigid part having a first opening configured to receive breathing gas from a continuous positive airway pressure device, and an other end having a second opening that communicates with an inner cavity of the elastic part; the elastic part configured to connect with the rigid part and provide an attachment surface for the fabric part, and having a third opening adjacent to the rigid part that communicates with the second opening; the fabric part having a first surface that is adjacent to an outer surface of the elastic part, and a second surface away from the elastic part, wherein an inner edge of the fabric part is adjacent to a fourth opening and has at least a portion that is larger than the fourth opening, such that both the elastic part and the fabric part are configured to jointly contact the face of the user along a connection between the inner edge and the elastic part of the fourth opening, and wherein an outer edge of the fabric part is away from the fourth opening; and an adhesive layer positioned between the outer surface of the elastic part and the first surface of the fabric part that connects the elastic part and the fabric part; wherein a connection between the elastic part and the fabric part via the adhesive layer is configured to be removably attachable and detachable, and an adhesive force provided by the adhesive layer to the fabric part is greater than a weight of the fabric part. ### Claim 16 (depends on 15) The patient interface cushion with the fabric part according to claim 15, wherein the fabric part has an air permeability of 15 ft3/min/ft2 to 60 ft3/min/ft2. ### Claim 17 (depends on 15) The patient interface cushion with the fabric part according to claim 15, wherein the fabric part has a thickness ranging from 0.6 mm to 3.5 mm. ### Claim 18 (depends on 15) The patient interface cushion with the fabric part according to claim 15, wherein the fabric part is multilayered. ### Claim 19 (depends on 15) The patient interface cushion with the fabric part according to claim 15, wherein a layer of the fabric part adjacent to the elastic part comprises a low-permeability material configured to prevent the adhesive layer from penetrating a second surface, the low-permeability material comprising but not limited to nylon-coated fabric, polyurethane-coated fabric, or high-density polyethylene fabric. ### Claim 20 (depends on 15) The patient interface cushion with the fabric part according to claim 15, wherein the adhesive layer has a thickness of 0.01 mm to 0.3 mm.