Superiglottic airway carrier

Abstract

The invention provides a supraglottic airway carrier, and relates to the technical field of medical instruments. The carrier comprises a cover body, a pipe body connected with the cover body and an air bag arranged on the periphery of the cover body, at least three channels are formed in the pipe body and include the first channel, the second channel and the third channel, and the channels extend towards the interior of the cover body in the axial direction of the pipe body and are communicated with three independent far-end outlets in the cover body in a one-to-one correspondence mode. Through independent layout of the three channels and function isolation design of a far-end outlet, positive pressure ventilation can be maintained, meanwhile, trachea intubation and bronchial plugging device imbedding and gastric juice drainage can be synchronously implemented, the defect that multiple functions of a traditional laryngeal mask cannot be achieved in parallel is overcome, and the safety and adaptability of airway management are improved.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a visual, multifunctional supraglottic airway carrier that can be used via laryngeal mask airway intubation in conjunction with a bronchial occluder. Background Technology

[0002] In thoracic anesthesia and minimally invasive lung surgery, airway management needs to address multiple clinical requirements, including ventilation assurance, glottic visualization, one-lung ventilation, bilateral lung isolation, and gastric contents drainage. Currently, the mainstream solution employs a combined device approach: in routine procedures, a third-generation video laryngeal mask airway (such as LMA CTrach® or Air-Q®) is first inserted to achieve rapid ventilation and endotracheal intubation under bronchoscopic guidance; if one-lung ventilation is required, the laryngeal mask airway must be removed and a double-lumen endotracheal tube (DLT) reinserted, a process that inevitably interrupts ventilation and carries the risk of repeated pharyngeal irritation and airway injury; some procedures also attempt to use a bronchial blocker (BB) combined with a single-lumen endotracheal tube, but its insertion relies on an established tracheal channel and cannot independently achieve lung isolation without intubation. Furthermore, while existing intubation-type laryngeal mask airways (such as ILMA) support intubation via LMA, ventilation is interrupted during intubation, and they are incompatible with bronchial tube (or occluder) insertion. Dual-lumen tubes, on the other hand, are inherently rigid and have a large outer diameter (e.g., the 37F DLT has an outer diameter of approximately 14.3 mm), requiring rotation during insertion, resulting in poor compliance with laryngeal anatomy and a high risk of tracheal mucosal damage and postoperative sore throat. The aforementioned technical approaches have become the standard paradigm for thoracic airway management and are widely accepted and applied in clinical practice.

[0003] However, the current problem is that the functions of various airway devices in existing technologies are fragmented, making it impossible to simultaneously achieve the five core functions of "continuous positive pressure ventilation," "real-time monitoring with fiberoptic bronchoscopy," "endotracheal tube insertion (maximum ID 8.0 mm)," "placement of large-diameter bronchial occluders (rapid deflation)," and "gastric tube drainage" under the same supraglottic airway device. This results in lengthy clinical procedures, increased airway interventions, cumulative tissue trauma, and an increased risk of hypoxia. Especially in patients with preserved spontaneous breathing or hemodynamic instability, ventilation interruption during intubation and tube replacement may induce severe hypoxia or circulatory fluctuations. At the same time, the large size and high rigidity of double-lumen tubes limit their application in difficult airways or pediatric patients, while existing laryngeal masks lack the structural adaptation and combined application capabilities for large-diameter bronchial occluders or bronchial tubes, making it difficult to replace double-lumen tubes for rapid deflation of the surgical lung and reliable bilateral lung isolation. Therefore, there is an urgent need for a new supraglottic airway carrier with high structural integration, good anatomical compliance, and non-interference among multiple intervention pathways, in order to break through the inherent technical bottleneck of "incompatibility of functions and interruption of operation" and improve the comfort, safety, efficiency and universality of thoracic anesthesia. Summary of the Invention

[0004] A supraglottic airway carrier includes a cover, a tube connected to the cover, and an airbag disposed on the periphery of the cover. The tube has at least three channels, namely a first channel, a second channel, and a third channel. Each channel extends into the cover along the axial direction of the tube and corresponds to and communicates with three independent distal outlets in the cover.

[0005] Furthermore, the tube body is an elliptical tube body, and the tube body is provided with longitudinal dividing ribs, which divide the tube body into a first channel, a second channel, and a third channel, which are respectively a drainage channel, a ventilation channel, and an insertion channel. The second and third channels are also elliptical channels, and the cross-sections of the two channels are distributed side by side, in the shape of a kidney, a gourd, or a binocular telescope. The first channel is circular and is located at the connection between the second and third channels.

[0006] Furthermore, the first channel is completely isolated from the second and third channels from the tube inlet to the far end outlet of the cover. The second and third channels are interconnected within the tube and extend to the far end outlet of the cover, where they are completely isolated through the outlet.

[0007] Furthermore, the short diameter of the intubation channel is greater than the short diameter of the ventilation channel, which is greater than the diameter of the drainage channel. The total inner transverse diameter of the tube body is ≤32mm, and the inner anterior-posterior diameter is ≤20mm.

[0008] Furthermore, four raised ridges are symmetrically arranged on the inner wall of the third channel.

[0009] Furthermore, the intubation channel and the ventilation channel are parallel and interconnected dual-cavity channels. The left side is the intubation channel with an inner diameter of 6-12.0 mm in the minor axis direction, and the right side is the ventilation channel with an inner diameter of 5-7.5 mm in the minor axis direction. A drainage channel with an inner diameter of 5 mm is provided in the triangular area where the dual-cavity channels connect. The drainage channel extends from the tube body and passes under the outlet of the intubation channel, conforming to the inner edge of the cover and continuing to extend to the outlet of the drainage channel and connecting with it. This design effectively ensures the inner cavity space of the cover.

[0010] Furthermore, the cover has a triangular bow-shaped structure. The first channel outlet is provided on the back side of the tip of the cover. A boss is provided on one side of the cavity of the cover. A third channel outlet is opened on the upper surface of the boss. The outlet is a beveled surface with the same curvature as the back of the cover. A second channel outlet is provided on the other side of the cavity. The second channel outlet is close to the bottom of the cover. The first channel comes out of the tube and is isolated from the second channel. It passes under the third channel outlet and connects with the first channel outlet. The cross-section of the outlets of the three channels is circular and they are independent and isolated from each other.

[0011] The third channel outlet is located inside the guide hood, while the second channel outlet is close to the bottom of the hood. Since the second and third channels are interconnected inside the tube, the two outlet positions cross each other to form a safe ventilation barrier. The bottom second channel outlet and the upper third channel outlet act as Murphy's orifices to each other. That is, when the epiglottis or other secretions cover or block the upper third channel outlet, the bottom second channel outlet can ensure ventilation; conversely, when the bottom outlet is blocked by secretions, the upper outlet can ensure ventilation.

[0012] Preferably, after the first channel exits the tube, it continues to extend and passes below the third channel outlet (below the protrusion), and extends to the first channel outlet along the inner edge of the cover and connects with it. The first channel outlet has a beveled shape that matches the curvature of the back of the cover. This streamlined structure significantly reduces the resistance during carrier insertion and the damage to the pharyngeal mucosa.

[0013] Furthermore, the air bladder is a flexible structure adapted to the anatomy of the human pharynx. The air bladder is connected to an inflation tube for inflating it. After inflation, the air bladder forms a relatively flat and wide contact surface on the laryngeal surface, which facilitates a seal around the larynx. Figure 1 As shown in Figure 3.

[0014] Furthermore, the supraglottic airway carrier also includes an operating platform, which includes a connecting part that acts as a dental pad and an operating table located above the connecting part. The connecting part is fixedly connected to the tube body, and the internal structure of the connecting part matches the internal structure of the tube body. The operating table has operating holes that match the first, second, and third channels. A standard interface extends upward from the operating hole of the second channel, and a sealing cap is detachably connected to the operating hole of the third channel. Preferably, the operating hole corresponding to the first channel (i.e., the drainage channel operating hole) is a round hole or a conical round hole. More preferably, the operating hole corresponding to the first channel is a conical round hole, which has a large insertion opening for easy insertion of the gastric tube and a small inlet for better guiding effect.

[0015] Furthermore, the control panel is equipped with fixed wings on both sides, with the ends of the fixed wings extending outward and upward at an angle of ≥40 degrees.

[0016] The beneficial effects are as follows: The present invention provides a supraglottic airway carrier that integrates three independent and functionally specific channels within a limited tube body through a reasonable structural design. This achieves physical isolation and parallel operation of ventilation, intubation and drainage, and solves the technical problem that existing supraglottic airway devices cannot simultaneously perform large-diameter tracheal / bronchial instrument intubation while maintaining continuous ventilation. The second and third channels in the airway carrier of the present invention are designed with Murphy's holes for each other, providing multiple ventilation guarantees for complex airway environments and greatly ensuring the safety of airway management. The design of the operating platform of the airway carrier of the present invention makes the fixation effect better and the compatibility stronger during use; In summary, the airway carrier of the present invention provides a more functional airway management operation platform that can simultaneously realize five core functions: "continuous positive pressure ventilation", "real-time monitoring by fiberoptic bronchoscope", "insertion of endotracheal tube (maximum ID 8.0 mm)", "placement of large-diameter bronchial occluder (fast deflation)" and "gastric tube drainage", significantly improving comfort, safety, flexibility and clinical efficiency in complex airway management scenarios. Attached Figure Description

[0017] Figure 1 A schematic diagram of the structure of a supraglottic airway carrier provided by the present invention. Figure 1 .

[0018] Figure 2 A schematic diagram of the structure of a supraglottic airway carrier provided by the present invention. Figure 2 .

[0019] Figure 3 A schematic diagram of the structure of a supraglottic airway carrier provided by the present invention. Figure 3 .

[0020] Figure 4 This is a schematic diagram of the operating platform of a supraglottic airway carrier provided by the present invention.

[0021] In the diagram: 1. Cover; 2. Tube; 3. Airbag; 4. Longitudinal dividing rib; 5. Ridge; 6. Boss; 7. Operating platform; 8. Drainage channel operating hole; 9. Standard interface; 10. Sealing cap; 11. Fixed wing; 12. Hanging ring; 21. Drainage channel; 22. Ventilation channel; 23. Intubation channel; 211. First channel outlet; 221. Second channel outlet; 231. Third channel outlet; 71. Connecting part; 72. Operating table. Detailed Implementation

[0022] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0023] Traditional supraglottic airway devices often have a single-lumen or double-lumen design for airway management, which often leads to mutual exclusion between ventilation and intubation functions. They cannot simultaneously insert and position large-diameter instruments while maintaining continuous ventilation, and they also struggle to meet the needs of lung isolation, ventilation safety, and ease of operation.

[0024] In response, the present invention proposes a supraglottic airway carrier, which includes a cover 1, a tube 2 connected to the cover, and an airbag 3 disposed on the outer periphery of the cover. The tube is provided with at least three channels, namely a first channel 21, a second channel 22, and a third channel 23. Each channel extends into the cover along the axial direction of the tube and corresponds to and communicates with three independent distal outlets in the cover.

[0025] For ease of understanding, the following explains some key terms in this embodiment: A supraglottic airway device is a medical device used to establish an artificial airway above the glottis of a patient. Its main function is to maintain the patency of the patient's airway and to assist in procedures such as ventilation, drainage, or intubation.

[0026] A mask is the distal component of a supraglottic airway carrier that adapts to and seals against the anatomical structure of the patient's pharynx and larynx. Masks are typically designed to cover the laryngeal inlet area to ensure effective airway management.

[0027] The tube is a component in the supraglottic airway carrier that connects to the cover and extends outward. It contains channels for different functions. The tube is usually designed to have sufficient length and flexibility to facilitate the insertion and operation of instruments.

[0028] An airbag is an inflatable structure placed around the outside of a mask. Its main function is to expand and seal with the surrounding tissues after the mask is placed in the throat, thereby stabilizing the position of the mask and preventing gas leakage or foreign objects from entering the airway.

[0029] A channel is a tubular structure inside a tube used to guide gas, liquid, or medical devices through.

[0030] Remote exits refer to the end exits of each channel inside the enclosure. Through these exits, the medium or equipment inside the channel can enter or exit the internal space of the enclosure, or directly act on the target area.

[0031] Example 1 A supraglottic airway carrier, such as Figure 1 As shown, its structure includes a cover 1, a tube 2 connected to the cover, and an airbag 3 disposed on the outer periphery of the cover. The cover 1 is usually made of a medical material with a certain degree of flexibility, and its shape is designed to match the anatomical structure of the human throat (such as a triangular bow-shaped structure) to achieve an effective seal. The tube 2 is connected to the cover 1 and extends outward as the main structure. Its material is usually a medical-grade polymer with biocompatibility and appropriate rigidity to support the internal channel and facilitate operation. The airbag 3 is disposed on the outer periphery of the cover, and after inflation, it forms a relatively flat and wide contact surface on the laryngeal surface. Figure 1As shown in Figure 3, the auxiliary cover forms a stable seal in the throat.

[0032] The cover 1 adopts a triangular, boat-bow-shaped structure. This structure can be integrally molded from polyvinyl chloride (PVC) or soft silicone material with smooth transition edges. Its front end gradually narrows, forming a boat-bow or wedge-shaped structure. The beveled surface of the first channel outlet and the tube wall support the shape of the cover tip, which reduces the resistance during insertion and better conforms to the upper esophagus, hypopharynx, and pharyngeal anatomy. Alternatively, the cover can be composed of multiple flexible material layers, such as a medical-grade silicone inner layer and a thermoplastic polyurethane (TPU) outer layer with certain support. It can be injection molded or thermopressed to maintain flexibility while possessing a stable triangular, boat-bow-shaped shape. At the same time, it can ensure that the cover, airbag, and laryngeal surface form a relatively flat and wide contact surface, ensuring an effective seal between the upper esophagus and the laryngeal opening in the pharynx.

[0033] The tube body 2 has three channels, such as Figure 3 As shown, there are drainage channel 21, ventilation channel 22 and intubation channel 23, respectively. Each channel extends into the hood along the axial direction of the tube body. The direction of the channel is basically consistent with the long axis of the tube body and continues to extend into the internal space of the hood. This extension enables the channel to effectively connect the external operation with the target area inside the hood.

[0034] Each channel corresponds to and connects to one of the three independent distal outlets within the cover 1. This means each channel has a dedicated outlet inside the cover, physically isolated from the other outlets, thus resolving the mutual exclusion issues in ventilation, intubation, and drainage functions of existing supraglottic airway devices. These distal outlets can be designed with different shapes and sizes (preferably circular) and positioned at different locations within the cover to suit their respective functional requirements. For example, a first channel outlet is located on the dorsal side of the cover tip; a boss is located on one side of the cover cavity, with a third channel outlet on the upper surface of the boss; a second channel outlet is located on the other side of the cavity, close to the bottom of the cover; the first channel, after exiting the tube, is isolated from the second channel and passes under the third channel outlet, connecting to the first channel outlet. The cross-sections of the three channel outlets are all circular and mutually independent and isolated.

[0035] The third channel outlet is located inside the guide hood, while the second channel outlet is close to the bottom of the hood. Because the second and third channels are interconnected within the tube, their overlapping positions form a safe ventilation barrier. The bottom second channel outlet and the upper third channel outlet act as Murphy's orifices, ensuring ventilation even when the epiglottis or other obstructions cover or block the upper third channel outlet; conversely, when the bottom outlet is blocked by secretions, the upper outlet ensures ventilation. Therefore, this device can maintain continuous ventilation while simultaneously enabling the synchronous insertion and positioning of large-diameter instruments and reliable gastric drainage, significantly improving the convenience and safety of clinical procedures.

[0036] In practical implementation, the layout and shape of the channels may lead to insufficient space utilization or functional conflicts, making it impossible to efficiently perform ventilation, intubation, and drainage operations simultaneously. Therefore, the supraglottic airway carrier of the present invention has an elliptical tube body 2. The tube body 2 is provided with longitudinal dividing ribs 4, which divide the tube body 2 into a first channel, a second channel, and a third channel, namely a drainage channel 21, a ventilation channel 22, and an intubation channel 23. The second and third channels are elliptical channels with their cross-sections arranged side by side, resembling a kidney shape, a gourd shape, or a binocular telescope shape. The first channel has a circular cross-section and is located in the triangular area of ​​the longitudinal dividing ribs at the connection between the second and third channels.

[0037] The elliptical design of the tube body 2 provides a larger internal space within limited external dimensions, optimizing the space utilization within the tube body. The elliptical tube body can be manufactured using various mature processes such as extrusion molding, injection molding, or winding welding, ensuring production feasibility and cost-effectiveness. Inside the elliptical tube body, longitudinal dividing ribs 4 are arranged along its axial direction. These dividing ribs can be thin-walled structures integrally formed with the tube body, for example, through a co-extrusion process, or they can be manufactured separately and fixed inside the tube body by bonding or snap-fitting. The function of the longitudinal dividing ribs 4 is to effectively divide the internal space of the tube body into three independent channels: a first channel, a second channel, and a third channel. Specifically, the first channel is defined as a drainage channel, mainly used to drain gas and liquid from the patient's stomach or esophagus; the second channel is defined as a ventilation channel, used to deliver breathing gases to the patient and maintain ventilation; and the third channel is defined as an intubation channel, used to guide medical devices, such as endotracheal tubes, bronchial tubes, occluders, or fiberoptic bronchoscopes, into the patient's airway for operation. This clear functional division allows the supraglottic airway carrier to simultaneously meet multiple clinical needs. Both the second and third channels feature an elliptical cross-section and are arranged side-by-side within the tube. This arrangement ensures that the two main functional channels (ventilation and intubation) are closely adjacent, sharing the effective internal space. Their combined cross-sectional shape can resemble a kidney, a gourd, or a binocular telescope. This unique design not only optimizes space utilization but also ensures each channel has a sufficiently large inner diameter to support efficient ventilation and accommodate large-diameter intubation instruments. The first channel, the drainage channel, features a circular cross-section and is cleverly positioned in the triangular area of ​​the longitudinal dividing rib 4 at the junction of the second and third channels. This fully utilizes the space between the two main channels, avoiding any occupation or interference with ventilation and intubation functions. This layout ensures effective drainage while maintaining the overall structural compactness. Furthermore, the operating port of the first channel (drainage channel operating port) is a conical circular hole, facilitating the insertion of a gastric tube.

[0038] Through the above technical solution, this embodiment effectively solves the problems of insufficient channel space utilization and functional conflict in the prior art by optimizing the tube structure and channel layout, thereby realizing the efficient parallel operation of ventilation, intubation and drainage, which greatly improves the efficiency of clinical application and patient safety.

[0039] This embodiment further proposes that the first channel and the second and third channels are completely isolated from the tube inlet to the far end outlet of the cover. The second channel and the third channel are interconnected within the tube and extend to the far end outlet of the cover, where they are completely isolated through the outlet.

[0040] This complete isolation can be achieved by setting independent, airtight baffles or wall structures inside the tube, such as using a one-piece molding or multi-layer co-extrusion process, so that the wall of the first channel is completely unconnected to the walls of other channels. Another approach is to design the first channel as an independent tube-in-tube structure, where the first channel itself is an independent thin tube embedded or fixed within a larger cavity formed by the second and third channels, thus achieving complete physical isolation.

[0041] Simultaneously, the second and third channels are interconnected within the tube, meaning that the second and third channels are open and share space in specific areas within the tube. This connectivity significantly expands the gas flow space within the vehicle and avoids unnecessary structural redundancy. This connectivity can be achieved by omitting or partially removing the separating ribs inside the tube, allowing the inner walls of the second and third channels to be partially isolated along a certain section of the tube's axial direction, forming a shared cavity. Alternatively, it can be achieved by creating one or more connecting holes in the walls separating the second and third channels, allowing gas exchange at specific locations within the tube.

[0042] Building upon this, the channels extend to the far-end exit of the enclosure, where they are completely isolated. This means that each channel's far-end exit within the enclosure is independent and does not interfere with others, ensuring the specificity and effectiveness of each function. This complete isolation can be achieved by designing independent exit structures inside the enclosure, such as by creating independent holes in the enclosure wall, each hole corresponding to the end of a channel, ensuring sufficient physical spacing or partitions between these holes. Another approach is to use a transition piece (such as a boss) with an independent guiding structure at the connection between the tube end and the enclosure. This transition piece re-separates the second and third channels that are connected inside the tube before entering the enclosure and guides them to their respective far-end exits.

[0043] The airbag 3 is designed as a flexible structure adapted to the anatomy of the human pharynx. It can be made of medical-grade silicone, polyurethane, or thermoplastic elastomers with high elastic modulus and good biocompatibility. The airbag is connected to an inflation tube for inflating the airbag. This inflation tube is the channel connecting the airbag to an external inflation device, used to precisely control the inflation and deflation of the airbag. The inflation tube can be integrally molded with the tube body or firmly connected to the outer or inner wall of the tube body through heat fusion, bonding, or other methods. Its distal outlet communicates with the internal space of the airbag, while its proximal end leads to the outside of the carrier. It usually has a standard Luer connector or one-way valve for easy connection to an external inflation device. Alternatively, the inflation tube can be used as a separate component, connected to the airbag's inflation port through snaps, threads, or compression, and laid along the outside or inside of the tube body before finally leading out. The inflation tube can be made of medical-grade PVC, silicone, or polyethylene materials compatible with the tube body or airbag to ensure its flexibility, pressure resistance, and biocompatibility.

[0044] Through the above technical solution, the present invention optimizes the isolation and communication mechanism of the internal channels of the multi-channel supraglottic airway carrier, effectively solving the problem of mutual interference between the functions of the channels, thereby ensuring the independence and synergy of each function, enabling the supraglottic airway carrier to perform multiple tasks more safely and efficiently in clinical applications.

[0045] Example 2 A supraglottic airway carrier has the same structure as in Embodiment 1. However, this embodiment further proposes that the short diameter of the intubation channel in the supraglottic airway carrier is greater than the short diameter of the ventilation channel, which is greater than the diameter of the drainage channel.

[0046] Specifically, the intubation channel 23 is mainly used to guide and accommodate large-diameter medical devices, such as endotracheal tubes, bronchial tubes, or large-diameter bronchial occluders, to achieve procedures such as endotracheal intubation or lung isolation. Its short diameter design must ensure that the device can pass smoothly while maintaining the structural integrity of the channel. In this embodiment, the short diameter of the intubation channel 23 is designed to be 11.0 mm to be compatible with mainstream large-diameter endotracheal tubes (the largest endotracheal tube with an inner diameter of 8 mm can be inserted). The ventilation channel 22 is mainly used to deliver respiratory gases to provide ventilation support for the patient, especially in positive pressure ventilation mode. Its short diameter design needs to balance ventilation efficiency and tube space occupation. A larger short diameter helps to reduce airway resistance and increase gas flow, thereby ensuring efficient ventilation; while an appropriate short diameter can reserve necessary space for other channels. In this embodiment, the short diameter of the ventilation channel is designed to be 7.0 mm to ensure sufficient ventilation flow (due to its elliptical cross-section design and its connection with the intubation channel 23, its ventilation volume already exceeds the ventilation efficiency of an endotracheal tube with an inner diameter of 8 mm). The drainage channel 21 is mainly used to drain gas or liquid to prevent aspiration into the airway and improve patient safety. Its diameter should be designed to ensure sufficient drainage capacity while minimizing the impact on the overall size and structural strength of the tube. In this embodiment, the diameter of the drainage channel 21 is designed to be 5 mm to effectively drain gastric fluid.

[0047] Based on the above design dimensions and combined with the structural design in Embodiment 1, the overall inner horizontal diameter of the cover 2 in this embodiment is 30mm, and the inner front and rear diameter is 18mm.

[0048] Through the above technical solution, this embodiment rationally optimizes the size configuration of each channel within the supraglottic airway carrier, enabling the intubation channel, ventilation channel, and drainage channel to efficiently perform their respective functions and avoid mutual interference. Specifically, the short diameter of the intubation channel is designed to be larger than that of the ventilation channel, ensuring sufficient space to accommodate large-diameter endotracheal tubes or bronchial instruments. This allows for simultaneous intubation without interrupting ventilation, solving the problem of insufficient intubation channel capacity in existing technologies. Simultaneously, the inner diameter of the ventilation channel overlaps and connects with the intubation channel, ensuring ventilation efficiency while limiting the space within the tube body. The drainage channel, with a relatively smaller diameter, is designed in the triangular area formed by the intersection of the two larger channels. This satisfies the need for reliable drainage of gastric fluid while minimizing the occupation of internal space within the tube body, avoiding channel redundancy and thus optimizing the overall structural compactness and functional integration of the tube body. This gradient size design optimizes the use of limited internal space within the tube, significantly improving the versatility, safety, and ease of operation of supraglottic airway carriers in clinical applications.

[0049] Example 3 A supraglottic airway carrier, with the same structure as in Embodiment 2, is further proposed in this embodiment to have four symmetrically arranged protruding ridges 5 on the inner wall of the third channel, and the four ridges 5 are distributed in concentric circles.

[0050] Specifically, the raised ridge 5 is a structural protrusion located on the inner wall of the third channel. Its main function is to reduce the contact area between the endotracheal tube and the inner wall of the channel during intubation, thereby reducing intubation resistance. It also provides additional structural support and resistance to deformation. These ridges can be integrally formed with the wall of the third channel, for example, through injection molding or extrusion processes, thus ensuring structural strength and integrity; alternatively, they can be used as independent prefabricated components, firmly fixed to the inner wall of the third channel through bonding, welding, or hot-melt methods. "Symmetrical arrangement" means that these four raised ridges are concentrically distributed on the inner wall of the third channel. For example, in an elliptical or kidney-shaped third channel, these ridges can be evenly distributed around the concentric circles of the channel to ensure balanced support when subjected to external pressure or internal instrument friction, thus effectively resisting deformation.

[0051] These ridges, acting as internal support structures, guide and effectively reduce the radial pressure and friction generated when intubation instruments pass through. This enables rapid guidance of the instruments, ensuring smooth and stable passage and improving the efficiency and safety of intubation procedures while reducing operational difficulty. In addition, these ridges prevent deformation of the third channel and avoid potential compression or impact on adjacent channels (such as ventilation channels), thus ensuring the continuous effectiveness of ventilation during intubation and providing patients with safer airway management.

[0052] Example 4 A supraglottic airway carrier, with the same structure as Embodiment 3, but with the following features: a first channel outlet 211 at the tip of the cover; a boss on one side of the cover cavity with a third channel outlet 231; and a second channel outlet 221 on the other side of the cavity. The cross-sections of all three outlets are designed to be circular. (It should be noted that due to the different curvatures of the cover at different outlet positions, the circular outlets are chamfered or beveled at the connection point with the cover during processing, resulting in a visually elliptical shape.) Figure 2As shown, the first channel outlet 211 is visually shaped as an ellipse with a beveled cross-section that matches the curvature of the back of the cover. These outlets are independent and isolated from each other. The first channel passes through the side of the cover from below the third channel outlet, opening onto the back of the cover's tip, thus expanding the internal cavity. The third channel outlet is directed upwards and inwards, positioned higher than the second channel outlet. The second channel outlet is close to the bottom of the cover. Because the second and third channels are interconnected in the middle, their positions intersect vertically, forming a safe ventilation barrier. The bottom and upper outlets act as Murphy's orifices. That is, when the epiglottis or other secretions cover or block the upper third channel outlet, the bottom second channel outlet ensures ventilation; conversely, when the bottom second channel outlet is blocked by secretions, the upper third outlet ensures ventilation.

[0053] The first channel outlet 211 is the central hole on the frontmost back side of the cover. The outlet is beveled and chamfered, visually appearing elliptical and consistent with the curvature of the back of the cover, maintaining the streamlined structure of the cover to avoid tissue damage and ensure smooth passage of the drainage tube. Alternatively, the first channel outlet can be located slightly off-center at the tip of the cover, but still at the frontmost point. Its opening shape can be visually circular or elliptical to accommodate different drainage tube sizes, and it can be integrated with the first channel through a one-piece molding process.

[0054] The protrusion 6 within the cavity of the cover can be designed as an integrally formed structure on the inner wall of the cavity. For example, it can be designed as a semi-circular or chamfered square or rectangular protrusion. Its height and width must provide sufficient support and positioning without significantly increasing the volume of the cover and occupying as little space as possible. The third channel outlet 231 on the protrusion can be directly formed into a circular hole on the top or side of the protrusion. Its size matches the inner diameter of the intubation channel, and the outlet edge is ensured to be smooth to facilitate the smooth passage of catheters or fiberoptic bronchoscopes. Alternatively, a cavity communicating with the third channel can be reserved inside the protrusion. The cavity extends outward to the outlet of the third channel, and the outlet is designed as a circular shape with a certain upward and inward slope to guide the intubation instrument to enter the glottis more easily.

[0055] A second channel outlet 221 is provided on the other side of the cavity of the cover. The outlet is located on the side opposite to the boss in the cavity of the cover and is close to the bottom of the cover. The outlet is circular or elliptical, and its position and size are precisely calculated to ensure that the ventilation flow and rate can meet the needs of the human body.

[0056] Preferably, the exits of the three channels are all circular. The edges of the circular exits can be slightly chamfered or rounded to reduce the risk of friction and damage when the instrument is inserted. At the same time, the material of the exits can be integrally formed with the main material of the cover.

[0057] The above structural design forms a stepped outlet layout. This stepped design of the airway can also act as an epiglottic barrier, providing dual-port ventilation, which is equivalent to adding a Murphy hole to the laryngeal mask itself. Moreover, the above design physically eliminates the obstruction of the airway (the second and third channel outlets are Murphy holes for each other) and can effectively prevent gastric fluid from flowing back into the mask body, significantly improving the safety, functionality, and operational efficiency of the device. This allows for the simultaneous intubation of large-diameter instruments and reliable gastric fluid drainage while maintaining continuous ventilation.

[0058] Example 5 A supraglottic airway carrier, with the same structure as in Embodiment 4, further includes an operating platform 7, such as... Figure 4 As shown, the operating platform 7 includes a connecting part 71 that acts as a dental pad and an operating table 72 located above the connecting part 71. The connecting part 71 is fixedly connected to the tube body 2, and the internal structure of the connecting part 71 matches the internal structure of the tube body 2. The operating table 72 has operating holes that match the first, second, and third channels. These operating holes are pre-reserved openings on the operating platform for entering the various channels inside the tube body. A standard interface extends upward from the operating hole of the second channel, and a sealing cap is detachably connected to the operating hole of the third channel. Preferably, the operating hole (drainage channel operating hole) corresponding to the first channel is a round hole or a conical round hole. More preferably, the drainage channel operating hole 8 is a conical round hole, which has a large insertion opening for easy insertion and a small inlet opening for better guiding effect.

[0059] Specifically, this operating platform aims to provide a structure for sealing the tube inlet and functioning as a dental pad. It can be made from various medical-grade materials, such as polycarbonate, polypropylene, or silicone, to ensure biocompatibility and durability. It can be manufactured separately, but after completion, it needs to be assembled with the mask, tube, and airbag to form a complete supraglottic airway carrier. Therefore, the shape of the operating platform needs to be designed to match the tube. For example, if the tube is elliptical, the corresponding part of the operating platform should also be designed to be elliptical, with an edge structure adapted to the tube wall thickness. This allows for a sealed assembly with the tube and ensures that the channels within the tube extend to the connection points of the operating platform and precisely align and communicate with the operating holes on the operating table. The second channel's operating port extends upwards to form a standard interface 9. This standard interface 9 is a connection structure specifically designed for the second channel (ventilation channel), aiming to achieve standardized and convenient connection with external medical equipment (such as ventilators and anesthesia machines). This interface can adopt the internationally recognized tapered connector form to ensure broad compatibility. Its upward extension design helps operators avoid interference with the operating ports of other channels when connecting external equipment and provides a more ergonomic operating angle. The third channel's operating port also extends upwards to form an interface, at which a sealing cap 10 is detachably connected (the sealing cap 10 can be hung on the operating table 72 via the hanging ring 12 after removal). The sealing cap 10 is an accessory used to seal the third channel's operating port. When the third channel is not connected to external equipment, the sealing cap can reliably seal the interface to prevent gas leakage or the entry of outside air. The sealing cap can be connected to the third channel interface by means of threaded engagement, snap-fit, or friction fit, and can be made of flexible materials such as silicone, rubber, or medical plastics to ensure good sealing performance and ease of use.

[0060] Through the above technical solution, the present invention effectively solves the problems of inconvenient management and insufficient sealing of the operating hole at the inlet of the multi-channel glottic airway carrier tube.

[0061] In addition, during its implementation, the operating platform also serves to secure the supraglottic airway carrier. Therefore, to facilitate its fixation and prevent displacement or detachment during operation, which could affect the stability and safety of the device, the operating platform 72 is equipped with fixing wings on both sides. The ends of the fixing wings extend outward and upward at a 45-degree angle, making it easier for the operator to secure the device (for example, when the operating platform is close to the incisors, this design makes it easier to attach the fixing strap). These designs further facilitate the connection, operation, and fixation of external equipment, improving the overall usability of the carrier.

[0062] The following provides a more detailed explanation of the use of the supraglottic airway carrier of the present invention through a more specific application example: Case 1: The basic function of this supraglottic device - laryngeal mask First, medical staff insert the cover of the supraglottic airway carrier into the patient's pharynx. Then, the cuff is inflated via an inflation tube connected to it. This cuff is a flexible structure adapted to the anatomy of the human pharynx; after inflation, it forms an effective seal in the pharynx, isolating the patient's airway from the esophagus.

[0063] In practice, medical staff can connect patients to a ventilator and provide continuous positive pressure ventilation through the airway to maintain respiratory function. Simultaneously, a gastric tube is connected through the drainage channel to continuously drain gastric fluid, effectively preventing aspiration. Therefore, this device conforms to the characteristics of a second-generation laryngeal mask airway. The first channel, the gastric drainage tube, reduces intragastric pressure and prevents reflux and aspiration; the second and third channels form an unobstructed airway, the pre-formed curved tube facilitates device insertion, and the hooks on both sides of the platform facilitate device fixation. Furthermore, with the assistance of the third channel, combined with a flexible video endoscope (fiberoptic bronchoscope), visual positioning of the laryngeal mask airway can be conveniently performed under continuous ventilation—achieving the function of a visual laryngeal mask airway. It can be widely used for general anesthesia in minor and medium-sized surgeries and procedures.

[0064] Case 2: The combination of the second and third channels forms an intubation laryngeal mask airway and a video intubation laryngeal mask airway. For many emergency patients requiring general anesthesia, obese patients, patients with snoring, or patients with difficult airways, a laryngeal mask airway (LMA) is needed to quickly establish an airway to ensure ventilation and oxygenation, followed by endotracheal intubation to meet surgical requirements. In cases where airway spasm or gastric reflux occurs during LMA use, timely replacement of the endotracheal tube is necessary. In these situations, the second channel connects to the breathing circuit for ventilation, while the third channel is used for endotracheal intubation. Alternatively, a flexible video endoscope (fiberoptic bronchoscope) can be inserted through the second channel to the outlet to monitor the endotracheal intubation procedure, or the flexible video endoscope can be inserted into the endotracheal tube for guided intubation via the third channel.

[0065] Case 3: Bronchoscopy performed via the second and third access routes When bronchoscopy is required, general anesthesia can be administered under the support of this vehicle. A second ventilation channel is used, while a fiberoptic bronchoscope is inserted through a third channel with the aid of an inlet sealing ring to perform examinations and tissue biopsies. The patient remains calm and painless, with smooth ventilation. This is a prime example of comfortable medical care.

[0066] Case 4: Combined bronchial occlusion device application in the second and third channels Bronchial occluders are increasingly used in thoracic anesthesia, with their main advantage being minimally invasiveness. However, a significant drawback is the narrow occlusion tube, which slows down deflation of the affected lung and prevents ventilation via the occlusion tube. This device features a sufficiently wide third channel lumen to allow insertion of a large-diameter bronchial occluder (outer diameter > 7mm), enabling faster deflation and oxygenation or ventilation while achieving the functions of a conventional occluder. This significantly increases the applicability and safety of bronchial occluders in thoracic surgery.

[0067] Case 5: Second and Third Access Channels Combined to Replace Double-Lumen Endotracheal Tubes Double-lumen endotracheal tubes are a classic tool for anesthesia in open-chest surgery, enabling both lung isolation and separate ventilation. However, double-lumen endotracheal tubes lack pediatric sizes, and the insertion process is highly irritating, often causing tracheal mucosal damage. This device's third channel allows insertion of a bronchial tube (e.g., 3-5mm inner diameter for adults) into the left or right main bronchus, inflating the bronchial cuff. Depending on whether the lung is on the left or right side during surgery, the anesthesia machine's breathing circuit is connected to the standard connector of the second channel or the standard connector of the bronchial tube. In this way, the second channel of the device itself and the bronchial tube via the third channel combine to achieve the function of a double-lumen endotracheal tube, allowing for both lung isolation and separate ventilation. This significantly reduces the occurrence of difficult airways and greatly alleviates airway irritation and damage.

[0068] Therefore, this supraglottic airway carrier realizes the functions of a visual laryngeal mask, an intubated laryngeal mask, and a visual intubated laryngeal mask based on the functions of the second-generation laryngeal mask; it also facilitates bronchoscopy, can be used in conjunction with a large-diameter bronchial occluder for minimally invasive thoracic surgery, and can be combined with a bronchial tube to realize the function of a double-lumen endotracheal tube.

[0069] Compared to existing technologies where ventilation and intubation functions are often mutually exclusive, requiring ventilation to be paused or relying on external adapters, this integrated design significantly improves the safety, convenience, and efficiency of clinical applications, avoiding the risks and operational complexities that may arise from function switching.

[0070] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A supraglottic airway device comprising a mask body, a tube body connected to the mask body, and a balloon disposed on the outer periphery of the mask body, wherein, The pipe body is provided with at least three channels, i.e., a first channel, a second channel and a third channel, each of which extends along the axial direction of the pipe body to the inside of the cover body and corresponds to and communicates with three independent distal outlets in the cover body.

2. The supraglottic airway device of claim 1, wherein, The pipe body is an oval pipe body, and the inside of the pipe body is provided with a longitudinal separation rib, and the pipe body is separated into the first channel, the second channel and the third channel by the separation rib, which are a drainage channel, a ventilation channel and a cannula channel respectively.

3. A supraglottic airway device as claimed in claim 1 or 2, wherein, The first channel is completely isolated from the second and third channels from the inlet of the pipe body to the distal outlet of the cover body, and the second and third channels communicate with each other in the pipe body and are completely isolated by the outlet at the distal outlet of the cover body.

4. The supraglottic airway device of claim 2, wherein, The short diameter of the cannula channel is greater than the short diameter of the ventilation channel, and the diameter of the drainage channel is the smallest, and the overall inner transverse diameter of the pipe body is ≤32 mm, and the inner front-rear diameter is ≤20 mm.

5. A supraglottic airway device as claimed in claim 1 or 2 or 3, wherein, Four raised ridges are symmetrically arranged on the inner wall of the third channel.

6. The supraglottic airway device of claim 2, wherein, The cannula channel and the ventilation channel are double-lumen channels arranged side by side and communicating with each other, the left side is the cannula channel, the short axis direction inner diameter is 6-12.0 mm, the right side is the ventilation channel, the short axis direction inner diameter is 5-7.5 mm, and the triangular area at the connection of the double-lumen channels is provided with the drainage channel, and the inner diameter of the drainage channel is 5 mm.

7. The supraglottic airway device of claim 1 or 2, wherein, The cover body is a triangular bow-like structure, the first channel outlet is arranged on the back side of the tip of the cover body, and the outlet is consistent with the curvature of the back of the cover body, a boss is arranged on one side in the cavity of the cover body, a third channel outlet is arranged on the upper surface of the boss, a second channel outlet is arranged on the other side in the cavity, the second channel outlet is close to the bottom of the cover body, the first channel is isolated from the second channel after coming out of the pipe body, passes below the third channel outlet and communicates with the first channel outlet, and the cross sections of the outlets of the three channels are circular and independent of each other.

8. The supraglottic airway device of claim 1 or 2, wherein, The air bag is a flexible structure adapted to the anatomical structure of the human throat, and the air bag communicates with an inflation tube for inflating the air bag.

9. The supraglottic airway device of claim 1 or 2, wherein, An operation platform is further included, the operation platform includes a connecting part serving as a dental pad and an operation table located above the connecting part, the connecting part is fixedly connected with the pipe body, the internal structure of the connecting part is matched with the internal structure of the pipe body, and operation holes matched with the first, second and third channels are arranged on the operation table, wherein a standard interface is upwardly extended at the operation hole of the second channel, and a sealing cap is detachably connected at the operation hole of the third channel.

10. The supraglottic airway device of claim 1 or 2, wherein, Fixed wings are arranged on both sides of the operation table, and the two ends of the fixed wings are outwardly and upwardly extended by ≥40 degrees.

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