# US 11,439,782 B2 · Inflatable laryngeal mask airway for endoscopic diagnosis and treatment > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,439,782 B2 - Document ID: US11439782B2 - Status: Granted - Kind: B2 - Application number: 16/744,355 - Filed: 2020-01-16 - Published: 2020-07-23 - Granted: 2022-09-13 - Earliest claimed: 2019-01-18 - Assignees: Zhejiang Jenston Medical Technology Co., Ltd. - Applicants: Zhejiang Jenston Medical Technology Co., Ltd. - Inventors: Zan Cao; Feng Deng; Fan Li - Web page: https://patentgrep.com/patent/US11439782B2 ## CPC - A61M 16/0409: {with mean for closing the oesophagus} - A61M 16/045: {with cuffs partially or completely inflated by the respiratory gas} - A61B 1/267: for the respiratory tract, e.g. laryngoscopes or bronchoscopes - A61M 16/0415: {with access means to the stomach} - A61M 16/0486: {Multi-lumen tracheal tubes} - A61M 16/0488: {Mouthpieces; Means for guiding, securing or introducing the tubes (guiding or introducing with laryngoscopes A61B1/267; holding devices on the body A61M25/02)} - A61M 16/06: Respiratory or anaesthetic masks - A61M 16/0434: {Cuffs} - 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)} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract The present invention provides an inflatable laryngeal mask airway (LMA) for endoscopic diagnosis and treatment. The inflatable LMA for endoscopic diagnosis and treatment includes a cuff and an airway tube. The cuff is fixedly connected to the airway tube. The airway tube includes a ventilation airway, an endoscope channel and an inflation channel which are arranged in parallel. The ventilation inlet, the endoscope inlet and the inflation inlet are located at the end of the airway tube away from the cuff. The cuff includes a base body and an air bag connected to the base body. The inflation outlet is connected to the air bag. The endoscope outlet is connected to a lower surface of the base body and directed to the front side of the base body. The back surface of the endoscope channel is provided with an expansion port extending from the endoscope inlet to the endoscope outlet. ## Claims ### Claim 1 An inflatable laryngeal mask airway (LMA) for endoscopic diagnosis and treatment, comprising a cuff (1) and an airway tube, wherein the cuff (1) is fixedly connected to the airway tube; the airway tube comprises a ventilation airway, an endoscope channel and an inflation channel which are arranged in parallel; the ventilation airway comprises an ventilation inlet (21) and an ventilation outlet (22); the endoscope channel comprises an endoscope inlet (31) and an endoscope outlet (32); the inflation channel comprise an inflation inlet (41) and an inflation outlet (42), the ventilation inlet (21), the endoscope inlet (31) and the inflation inlet (41) are located at one end of the airway tube away from the cuff (1), the cuff (1) comprises a base body (11) and an air bag (12) connected to the base body (11), and the air bag (12) surrounds an edge of the base body (11) in an annular shape, the inflation outlet (42) is connected to the air bag (12), the endoscope outlet (32) is connected to a lower surface of the base body (11) and directed to a front side of the base body (11), and wherein a back surface of the endoscope channel is provided with an expansion port (33) extending from the endoscope inlet (31) to the endoscope outlet (32), the expansion port (33) penetrates through a side wall of the endoscope channel so that a shape of the endoscope channel is changeable during insertion of an endoscope into the endoscope channel, and the air bag (12) is tapered from a rear side to the front side of the base body (11); wherein the endoscope channel is internally provided with a plastic tube (34), and a side surface of the plastic tube (34) is provided with an opening corresponding to the expansion port (33). ### Claim 2 (depends on 1) The inflatable LMA for endoscopic diagnosis and treatment according to claim 1, wherein the ventilation outlet (22) penetrates upward from the lower surface of the base body (11) to an upper surface of the base body (11). ### Claim 3 (depends on 1) The inflatable LMA for endoscopic diagnosis and treatment according to claim 1, wherein the ventilation inlet (21) is externally connected with a connecting end (23) protruding from the end of the airway tube, and the connecting end (23) inclines outwards away from the endoscope inlet (31). ### Claim 4 (depends on 1) The inflatable LMA for endoscopic diagnosis and treatment according to claim 1, wherein the inflation inlet (41) is a hose extending outward from the airway tube. ### Claim 5 (depends on 4) The inflatable LMA for endoscopic diagnosis and treatment according to claim 4, wherein at the inflation inlet (41) there is a one-way valve (43) with a flow direction directed to the inflation outlet (42). ### Claim 6 (depends on 5) The inflatable LMA for endoscopic diagnosis and treatment according to claim 5, wherein a pressure indicator (44) is connected between the one-way valve (43) and the inflation outlet (42). ### Claim 7 (depends on 1) The inflatable LMA for endoscopic diagnosis and treatment according to claim 1, wherein a middle part of the airway tube is an arc transition, and an included angle of airway tube sections on both sides of the arc transition is 80-110°. ### Claim 8 (depends on 1) The inflatable LMA for endoscopic diagnosis and treatment according to claim 1, wherein an end (23) of the airway tube connecting to the cuff (1) is tapered from the rear side to the front side of the base body (11). ### Claim 9 (depends on 1) The inflatable LMA for endoscopic diagnosis and treatment according to claim 1, wherein the plastic tube (34) has an outward flanging (35) at the endoscope inlet (31).