# US 11,298,494 B2 · User interface for supplying gases to an airway > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,298,494 B2 - Document ID: US11298494B2 - Status: Granted - Kind: B2 - Application number: 15/562,127 - Filed: 2016-03-31 - Published: 2018-03-22 - Granted: 2022-04-12 - Earliest claimed: 2015-03-31 - Assignees: Fisher & Paykel Healthcare Limited - Applicants: Fisher & Paykel Healthcare Limited - Inventors: Michael Robert Barraclough; Matthew Jon Payton; Callum James Thomas Spence; Laurence Gulliver; Samantha Dale Oldfield; Dexter Chi Lun Cheung; Geraldine Frances Keogh; Milanjot Singh Assi; Alicia Jerram Hunter Evans; Craig Karl White - Web page: https://patentgrep.com/patent/US11298494B2 ## CPC - A61M 16/0666: {Nasal cannulas or tubing (devices for improving normal breathing through the nose A61F5/08; nose filters A62B23/06; outside holding devices A61M25/02)} - A61M 16/0434: {Cuffs} - A61M 16/0493: {with means for protecting the tube from damage caused by the patient's teeth, e.g. bite block} - A61M 16/0495: {with tongue depressors} - A61M 16/06: Respiratory or anaesthetic masks - A61M 16/0672: {Nasal cannula assemblies for oxygen therapy} - A61M 16/0683: {Holding devices therefor} - A61M 16/0816: {Joints or connectors} - A61M 16/201: {Controlled valves} - A61M 16/209: {Relief valves} - A61M 2016/0027: {pressure meter} - 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 user interface convertible between a nasal configuration and an oral configuration. The user interface has a nasal cannula and a mouthpiece. The nasal cannula has a body portion and at least one prong extending from the body portion, the prong being adapted to direct a flow of gas into a nare of a user's nose. The mouthpiece is adapted to engage the mouth of the patient and direct a flow of gas into a user's mouth. In the nasal configuration the prong of the nasal cannula is adapted to direct a flow of gases into a nare of the patient. In the oral configuration, the nasal cannula is engaged with the mouthpiece such that a gases flow is provided to at least the mouth of the user. ## Claims ### Claim 1 A user interface for providing a flow of respiratory gases to a user during a medical procedure comprising: a nasal interface comprising a body and a pair of prongs extending from the body, the prongs configured to engage nares of the user's nose and direct high flow respiratory gases into the nares; a mouthpiece adapted to engage the mouth of the user; wherein the prongs and/or the mouthpiece are configured to partially occlude either an oral airway, a nasal passage, or both the oral airway and the nasal passage in use; wherein each prong is independently inflatable to create a partial seal with the nares of the user; and wherein the prongs are configured to be inflatable to create a partial occlusion with the nares of the user during use while the nasal interface directs high flow respiratory gases into the nares, wherein the partial occlusion comprises a gap between an outer surface of each of the prongs and the nares of the user. ### Claim 2 (depends on 1) The user interface according to claim 1 wherein the mouthpiece is configured to create at least a partial seal with the mouth/oral airway of the user. ### Claim 3 (depends on 1) The user interface according to claim 1 wherein the user interface is adapted to allow a user to selectively create at least a partial occlusion with the nares of the user or with the oral airway/mouth or with both. ### Claim 4 (depends on 1) The user interface according to claim 1 wherein the mouthpiece is shaped to create a seal with the user's mouth or oral airways. ### Claim 5 (depends on 1) The user interface according to claim 1 wherein the mouthpiece is arranged to direct high flow respiratory gases into the mouth/oral airways of the user. ### Claim 6 (depends on 1) The user interface according to claim 1, wherein the mouthpiece is inflatable to create at least a partial seal with the mouth of the user. ### Claim 7 (depends on 6) The user interface according to claim 6, further comprising a mechanical control mechanism that allows selective inflation of the prongs, the mouthpiece, or both the prongs and the mouthpiece. ### Claim 8 (depends on 6) The user interface according to claim 6, wherein the nasal interface is removably connectable to the mouthpiece. ### Claim 9 (depends on 8) The user interface according to claim 8, wherein the mouthpiece is inflatable when the nasal interface is connected to the mouthpiece. ### Claim 10 (depends on 6) The user interface according to claim 6, wherein the mouthpiece comprises a passage to allow insertion of a medical instrument through the mouthpiece, the mouthpiece being shaped to conform to the shape of a user's mouth to create a seal with the mouth. ### Claim 11 (depends on 10) The user interface according to claim 10 wherein the passage is selectively openable and closeable to seal around the medical instrument inserted through the mouthpiece. ### Claim 12 (depends on 10) The user interface according to claim 10, wherein the passage comprises a passage inflatable seal, the passage inflatable seal being adapted to seal around a medical instrument inserted into the passage. ### Claim 13 (depends on 6) The user interface according to claim 6, wherein the mouthpiece comprises an outer inflatable seal that is adapted to inflate to create a seal with the mouth of the patient user. ### Claim 14 (depends on 6) The user interface according to claim 6, further comprising a seal activation mechanism controlling the inflation and deflation of the prongs and/or the mouthpiece. ### Claim 15 (depends on 6) The user interface according to claim 6, wherein the mouthpiece comprises a valve that can be selectively opened or closed based on the patient's user's inspiration and expiration. ### Claim 16 (depends on 15) The user interface according to claim 15, wherein the mouthpiece comprises a pressure line, the pressure line includes a cover slip that is moveable within the pressure line, the movement of the cover slip controlling opening and closing of the valve, the cover slip configured to move to open the valve during inspiration and the cover slip configured to move to close the valve during expiration.