A visual laryngeal mask facilitating insertion

Abstract

The present invention relates to the technical field of laryngeal masks, and discloses a visual laryngeal mask convenient for insertion, which includes a tube body. A connecting part is arranged at the upper end of the tube body, a film-shaped mask body is arranged at the upper end of the connecting part, and a sealing component is arranged at the upper end of the mask body, and the sealing component is placed at the glottis; A pair of suction channels are arranged through the side wall of the tube body, a gastric channel is arranged through the side wall of the tube body, a control tube is arranged on the inner wall of the gastric channel, the gastric channel passes through the mask body and the sealing component and is placed in the esophagus, and an expansion ring is arranged on the tube wall of the gastric channel and above the sealing component. The interior of the expansion ring is hollow and communicates with the control tube. For the visual laryngeal mask convenient for insertion, through the split laryngeal mask design, the sealing component covers the glottis to play a role in fitting and sealing the glottis. After the expansion ring penetrates into the esophagus, it is inflated through the control tube and expands in the esophagus to play a role in sealing the esophagus. At the same time, a gastric channel penetrating into the stomach is also provided to exhaust and decompress the stomach of the anesthetized patient.

Description

Technical Field

[0001] The present invention relates to the technical field of laryngeal masks, and in particular to a visual laryngeal mask that is easy to insert. Background Art

[0002] A laryngeal mask is a medical device for airway management, mainly used in anesthesia, first aid, or other scenarios that require short-term maintenance of airway patency. It is usually made of soft silicone or plastic materials and can be inserted through the oral cavity to form a seal above the glottis to ensure that oxygen or anesthetic gas can smoothly enter the airway. The advantages of the laryngeal mask include relatively simple operation, less trauma, less irritation to the airway, and in some cases, it can be used as an alternative to tracheal intubation. It is widely used in the ventilation management of general anesthesia, first aid resuscitation, and difficult airway management.

[0003] In the patent with the publication number CN117919553A, a laryngeal mask catheter is disclosed, which includes a mask body and a tube body connected to the mask body; two protruding piriform fossa matching parts spaced apart from each other are provided at the distal end of the mask body, and a recessed part is located between the two piriform fossa matching parts; a ventilation channel is formed in the tube body and communicated to the inside of the mask body, and the channel opening of the ventilation channel faces the distal end of the mask body; in the longitudinal section of the laryngeal mask catheter, the part of the mask body from the distal end to the channel opening of the ventilation channel is an extension section of the lower wall of the tube body. With the above technical solution, in the laryngeal mask catheter of the present invention, since the distal end of the mask body does not insert into the interval behind the cricoid cartilage.

[0004] The prior art has the following defects:

[0005] Existing laryngeal masks (such as traditional laryngeal masks) still have several key defects in clinical use, mainly manifested as insufficient sealing performance and anatomical adaptability. Its standard single-airbag design is prone to air leakage in a high-pressure ventilation environment because it cannot fully fit the complex laryngeal structure. Especially in the face of glottis anatomical variations or airway high-pressure situations, the sealing effect significantly decreases. The airbag usually adopts a symmetrical annular structure and is difficult to adapt to irregular anatomical forms such as the epiglottis and arytenoid cartilage. It may not only cause air leakage due to incomplete fitting but also cause nerve compression or mucosal damage due to local over-inflation. The existing silicone or PVC airbags lack pressure self-adaptive characteristics and cannot dynamically adjust during ventilation pressure fluctuations. They may not only have insufficient sealing at low pressure but also cause harmful mucosal compression at high pressure. In addition, the fixed design cannot effectively respond to airway pressure changes during patient coughing or under high PEEP conditions of the ventilator, increasing the risk of ventilation failure. These structural limitations may also cause secondary clinical problems, such as the risk of aspiration or local ischemic injury caused by repeated adjustments, highlighting the urgent need for optimization in aspects such as material selection, shape design, and dynamic response mechanism of existing products. Summary of the Invention

[0006] In view of the above problems in the prior art, a visual laryngeal mask that is easy to insert is proposed.

[0007] On the one hand, the present application provides a visual laryngeal mask that is easy to insert, and its purpose is to provide a laryngeal mask with good sealing performance and high adaptability.

[0008] The technical solution of the present invention is: a visual laryngeal mask that is easy to insert, including a tube body. A connecting part is provided at the upper end of the tube body. A film-shaped mask body is provided at the upper end of the connecting part. A sealing component is provided at the upper end of the mask body, and the sealing component is placed at the glottis. A pair of suction channels are penetrated through the side wall of the tube body. A gastric channel is penetrated through the side wall of the tube body. A control tube is provided on the inner wall of the gastric channel. The gastric channel passes through the mask body and the sealing component and is placed in the esophagus. An expansion ring is provided on the tube wall of the gastric channel and above the sealing component. The inside of the expansion ring is hollow and communicates with the control tube.

[0009] With the above solution, through the split laryngeal mask design, the sealing component covers the glottis to play a role in fitting and sealing the glottis. After the expansion ring penetrates into the esophagus, it is inflated through the control tube and expands in the esophagus to play a role in sealing the esophagus. At the same time, a gastric channel penetrating into the stomach is also provided to exhaust and decompress the stomach of the anesthetized patient.

[0010] Further, the sealing component is a silicone ring, and the cross-section of the silicone ring on the side away from the gastric channel is larger than the cross-section on the side close to the gastric channel.

[0011] With the above solution, by setting the silicone ring, the silicone ring covers the glottis to play a role in sealing the glottis.

[0012] Further, a camera is provided on the inner wall of the tube body 1 near the upper end opening.

[0013] With the above solution, through the camera, the pharyngeal image can be seen during intubation, and the sealing component can be smoothly sent to the glottis.

[0014] Further, a protrusion is provided on the outer wall of the upper end of the tube body, and a groove is provided on the inner wall of the connecting part. The protrusion is engaged in the groove.

[0015] With the above solution, through the cooperation of the protrusion and the groove, the mask body and the sealing component on the connecting part can be replaced, and sealing components of different sizes can be designed according to different body types of people, so as to be applicable to a wider range of people.

[0016] Further, a spiral groove is provided on the inner wall of the mask body.

[0017] With the above solution, by setting the spiral groove, the airflow is guided to form a laminar flow, reducing the local pressure fluctuation caused by the eddy current and reducing the risk of air leakage.

[0018] Further, the sealing assembly includes an air ring connected to the upper end of the cover body. The air ring is hollow inside, and an air nozzle for connecting a control tube is provided on the inner wall of the air ring. A plurality of air blocks are circumferentially distributed on the upper end surface of the air ring. The air blocks are hollow inside, and each air block is communicated with the inside of the air ring through a communication hole provided on the air ring.

[0019] With the above solution, by providing the air ring and the air blocks, and the communication holes are embedded in the air ring. When ventilating, the air flow enters the secondary air sacs (air blocks) through the communication holes. The high-pressure air flow automatically pushes the secondary air sacs (air blocks) to expand and fill the gap between the main air sac (air ring) and the glottis.

[0020] Further, a plurality of slender elastic bands are distributed on the surface of the air block, and capillary tubes communicated with the inside of the air block are provided inside the elastic bands.

[0021] With the above solution, by distributing a plurality of slender elastic bands on the surface of the air block, after inflation, they are radially attached to the mucosal folds of the irregular surface.

[0022] Further, covering valves are equidistantly distributed on the inner wall of the air ring. The covering valves are hollow inside and are connected to the inside of the air ring. When the control tube is not inflated, the covering valves are folded on the inner wall of the air ring. When the control tube is inflated, the covering valves straighten and cover the back of the epiglottis.

[0023] With the above solution, by providing the covering valves, a flexible membrane flap extends from the distal end of the air ring to cover the back of the epiglottis. It prevents the epiglottis from collapsing and blocking the airway during ventilation, and at the same time enhances the supra-glottic seal.

[0024] Further, a connecting band is provided between adjacent covering valves.

[0025] With the above solution, by providing the connecting band, the plurality of covering valves can keep stable when moving together.

[0026] Further, the silicone ring is hollow inside and filled with a shear thickening fluid.

[0027] With the above solution, by filling the shear thickening fluid, such as SiO2 particle suspension, in the silicone ring, it locally hardens under high pressure, remains soft during normal ventilation, and locally hardens during coughing or high pressure to prevent deformation and air leakage.

[0028] The beneficial effects of the present invention:

[0029] 1. Through the split glottis cover design, the sealing assembly covers the glottis to play a role in fitting and sealing the glottis. The expansion ring is inserted into the esophagus and inflated through the control tube to expand in the esophagus, playing a role in sealing the esophagus. At the same time, a gastric channel inserted into the stomach is also provided to exhaust and decompress the stomach of the anesthetized patient.

[0030] 2. By setting up air rings and air chambers, the traditional single-chamber airbag is improved into a multi-chamber structure, achieving precise zonal sealing of the pharyngeal region. This design divides it into air rings and air blocks along the longitudinal axis of the trachea. The proximal air ring has low elasticity and mainly functions to fix the position of the device to prevent the laryngeal mask from shifting; while the distal air block has high elasticity, and its special petal design can closely fit the irregular contour of the glottis.

[0031] 3. By setting up a covering valve, a flexible membrane flap extends from the distal end of the air ring to cover the back of the epiglottis. This prevents the epiglottis from collapsing and blocking the airway during ventilation, while enhancing the supra-glottic seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a perspective view of the visual glottis mask for easy insertion of the present invention;

[0033] Figure 2 is of the present invention Figure 1 a cross-sectional view taken along line A-A in;

[0034] Figure 3 is of the present invention Figure 1 exploded view;

[0035] Figure 4 is of the present invention Figure 1 top view;

[0036] Figure 5 is of the present invention Figure 4 a cross-sectional view taken along line B-B in;

[0037] Figure 6 is a perspective view of the sealing assembly in the visual glottis mask for easy insertion of the present invention;

[0038] Figure 7 is of the present invention Figure 6 top view;

[0039] Figure 8 is of the present invention Figure 7 a cross-sectional view taken along line C-C in;

[0040] Figure 9 is a perspective view of the extended state of the covering valve in the visual glottis mask for easy insertion of the present invention;

[0041] Figure 10 is a cross-sectional view of the extended state of the covering valve in the visual glottis mask for easy insertion of the present invention.

[0042] In the figures:

[0043] 1. Tube body; 2. Connection part; 3. Cover body; 4. Suction channel; 5. Intragastric channel; 6. Control tube; 7. Expansion ring; 8. Camera; 9. Protrusion; 10. Groove; 11. Spiral groove; 12. Air ring; 13. Air nozzle; 14. Air block; 15. Elastic band; 16. Covering valve; 17. Connection band. Detailed implementation manner

[0044] To make the above objects, features and advantages of the present invention more obvious and understandable, the following will make a detailed description of the specific implementation manner of the present invention in conjunction with the accompanying drawings of the specification.

[0045] Example 1, referring to Figures 1-5 , which is the first embodiment of the present invention, provides a visual glottis mask that is easy to insert, including a tube body 1. A connection part 2 is provided at the upper end of the tube body 1. A film-shaped cover body 3 is provided at the upper end of the connection part 2. A sealing component is provided at the upper end of the cover body 3, and the sealing component is placed at the glottis; A pair of suction channels 4 are penetrated in the side wall of the tube body 1, and an intragastric channel 5 is penetrated in the side wall of the tube body 1. A control tube 6 is provided on the inner wall of the intragastric channel 5. The intragastric channel 5 passes through the cover body 3 and the sealing component and is placed in the esophagus. An expansion ring 7 is provided on the tube wall of the intragastric channel 5 and above the sealing component. The expansion ring 7 is hollow inside and is connected to the control tube 6.

[0046] In this embodiment, the connection between the tube body 1 and the connection part 2 is a plug-in connection. The film-shaped cover body 3 has elasticity. The length of the intragastric channel 5 can communicate with the stomach. The suction channel 4, the intragastric channel 5, and the control tube 6 are fixed in the side wall of the tube body 1. Small holes are opened on the control tube 6 to communicate with the expansion ring 7. After the expansion ring 7 expands in the esophagus, it plays a role in sealing the esophagus and at the same time plays a role in fixing the sealing component.

[0047] Through the split design of the glottis mask, the sealing component covers the glottis to play a role in fitting and sealing the glottis. After the expansion ring 7 penetrates into the esophagus and is inflated through the control tube 6, it plays a role in sealing the esophagus. At the same time, an intragastric channel 5 that penetrates into the stomach is also provided to exhaust and decompress the stomach of the anesthetized patient.

[0048] Referring to Figure 5 , the sealing component of the visual glottis mask that is easy to insert is a silicone ring, and the cross-section of the silicone ring on the side away from the intragastric channel 5 is larger than the cross-section on the side close to the intragastric channel 5.

[0049] By providing the silicone ring, the silicone ring covers the glottis to play a role in sealing the glottis.

[0050] In other possible embodiments, the silicone ring can also be configured as a hollow structure. This hollow structure can be airtight, or the expansion and contraction of the silicone ring can be controlled by a catheter that passes through the side wall of the tube body 1 and exits from the bottom of the tube body 1. The multi-mode design of the silicone ring (solid, airtight hollow, hollow inflatable) can significantly improve clinical adaptability. The solid silicone ring provides rigid support to ensure accurate positioning and is suitable for standard patients with well-defined anatomical structures; the airtight hollow design reduces tissue pressure through internal gas buffering and reduces the risk of mucosal injury, making it suitable for long-term surgeries; the hollow inflatable structure is adjustable and can achieve personalized sealing through pressure adjustment, especially suitable for patients with anatomical variations or difficult airways. This modular design enables a single glottis mask to cover a wider range of clinical needs, and the optimal mode can be selected according to the specific situation of the patient during operation.

[0051] Referring to Figure 3 , a camera 8 is provided on the inner wall of the tube body 1 near the upper end opening. A wire is connected to the camera 8 and passes through the inside of the tube body 1 and is connected to a display device.

[0052] Through the camera 8, the pharyngeal image can be seen during intubation, and the sealing assembly can be smoothly sent to the glottis.

[0053] Furthermore, a protrusion 9 is provided on the outer wall of the upper end of the tube body 1 of the visual glottis mask for easy insertion, and a groove 10 is provided on the inner wall of the connecting portion 2. The protrusion 9 is engaged in the groove 10.

[0054] Referring to Figure 5 , through the cooperation of the protrusion 9 and the groove 10, the cover body 3 and the sealing assembly on the connecting portion 2 can be replaced, and different sizes of sealing assemblies can be designed according to different body types, so as to be applicable to a wider range of people.

[0055] Example 2, referring to Figures 1-10 , which is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is: specifically referring to Figure 8 , a spiral groove 11 is provided on the inner wall of the cover body 3.

[0056] By machining a precision spiral groove 10 (groove depth 0.3 - 0.5 mm, pitch 2 - 3 mm) on the inner surface of the distal end of the airbag, intelligent guidance of the ventilation airflow is achieved. When high-speed airflow passes through, it forms a stable laminar flow along the spiral trajectory. This structure effectively breaks the random eddies generated on the inner surface of the traditional smooth cover body 3, reduces the airflow turbulence by more than 60%, and significantly reduces the instantaneous air leakage phenomenon caused by pressure oscillation. At the same time, the spiral flow guiding design increases the axial velocity of the airflow by 15%, and a larger effective ventilation volume can be obtained under the same driving pressure.

[0057] Referring to Figures 6-8, The visual laryngeal mask airway sealing assembly that is convenient for insertion includes an air ring 12 connected to the upper end of the mask body 3. The air ring 12 is hollow inside, and an air nozzle 13 for connecting a control tube 6 is provided on the inner wall of the air ring 12. A plurality of air blocks 14 are circumferentially distributed on the upper end surface of the air ring 12. The air blocks 14 are hollow inside, and each air block 14 is communicated with the inside of the air ring 12 through a communication hole provided on the air ring 12.

[0058] In this embodiment, the wall thickness of the air ring 12 is greater than that of the air block 14. By modifying the traditional single-chamber airbag into a multi-chamber structure, accurate zonal sealing of the pharyngeal region is achieved. This design divides it into the air ring 12 and the air block 14 along the longitudinal axis of the trachea. The proximal air ring 12 has low elasticity and mainly functions to fix the position of the device to prevent the laryngeal mask from shifting; while the distal air block 14 has high elasticity, and its special petal design can closely fit the irregular contour of the glottis. The core of the petal design lies in that a precise micro-airflow channel network is embedded inside the air ring 12. These channels with a diameter of about 0.5 - 1 mm are radially distributed in the wall of the main air ring 12 and are connected to a plurality of secondary "skirt" structures on the periphery of the air ring 12. When positive pressure ventilation is performed, part of the airflow will be naturally diverted through these micro-channels to promote the expansion of the air block 14. The air block 14 will automatically inflate, unfold like a "petal" and fill the potential gap between the main air ring 12 and the glottis anatomical structure.

[0059] This zonal pressure design effectively solves the clinical dilemma brought by the "uniform pressure of the whole airbag" of the traditional laryngeal mask: it can achieve sufficient fitting in the glottis area that requires high sealing pressure, and can avoid excessive compression in the pharyngeal area that is sensitive to pressure, significantly reducing the risk of complications such as hypoglossal nerve injury. In vitro experiments show that this design can increase the effective contact area in the glottis area by more than 35%, and at the same time, under the same sealing effect, the tissue contact pressure in the pharyngeal area is reduced by 40%. This improvement in anatomical adaptability makes this device particularly suitable for the anesthesia management of patients with difficult airways and long-term surgeries.

[0060] Refer to Figure 7 , On the surface of the air block 14 of the visual laryngeal mask airway that is convenient for insertion, a plurality of slender elastic bands 15 are distributed. Capillaries communicated with the inside of the air block 14 are provided inside the elastic bands 15.

[0061] In this embodiment, the tentacle - type micro - elastic band 15 innovatively draws on the biological adsorption mechanism of octopus tentacles, and dozens of micro - elastic bands 15 with a diameter of 1 - 2 mm are integrated on the surface of the air block 14. These slender tentacle - shaped structures made of medical - grade silicone are radially arranged and will spontaneously extend and conform to the microscopic wrinkles on the surface of the laryngeal mucosa after inflation. A micro - suction cup structure is designed at the end of each sealing band, which forms a temporary adhesion with the tissue surface through van der Waals force, significantly improving the interface sealing performance without damaging the mucosa. This bionic design breaks through the limitation of the "surface contact" between the traditional smooth air block 14 and the tissue, and transforms it into a "multi - point contact" mode that is more in line with anatomical characteristics, capable of adapting to the surface irregularity of 0.1 - 2 mm in the glottis area. Experimental data shows that this structure can improve the uniformity of local contact pressure distribution by 60% and reduce the air leakage volume by 45% under a ventilation pressure of 30 cmH2O. Compared with the integral air block 14, this discrete sealing system greatly reduces the tissue compression force per unit area while ensuring airtightness.

[0062] Refer to Figures 6-10 , on the inner wall of the visually - observable glottis mask air ring 12 that is convenient for insertion, covering valves 16 are equidistantly distributed. The inside of the covering valve 16 is hollow and connected to the inside of the air ring 12. When the control tube 6 is not inflated, the covering valve 16 folds on the inner wall of the air ring 12, and when the control tube 6 is inflated, the covering valve 16 straightens and covers the back of the epiglottis.

[0063] In this embodiment, a ultra - thin flexible membrane flap with a thickness of less than 0.1 mm is integrated at the distal end of the air ring 12. The covering valve 16 has a folding handle and a circular arc head, and is made of medical - grade silicone or polyurethane material, with excellent biocompatibility and anti - fatigue characteristics. The folding handle is close to the cover body 3 downward in the non - inflated state, and after inflation, the folding handle unfolds upward in a radial umbrella shape, with a diameter of about 15 - 20 mm. The edge is designed with a progressive thickness gradient to ensure that when covering the back of the epiglottis, it can provide sufficient support strength without causing mechanical damage to the mucosa in the vallecula epiglottica. When the air ring 12 is inflated and positioned, the circular arc head will automatically unfold as the folding handle expands, gently covering the back of the epiglottis to form a physical barrier to prevent the epiglottis from collapsing backward and blocking the airway during positive - pressure ventilation. At the same time, the double - layer sealing structure formed between the membrane flap and the main body of the air ring 12 significantly improves the supra - glottic airtightness. Clinical tests show that it can reduce the airway leakage related to the epiglottis by more than 70%. The surface of the membrane flap is specially micro - textured, which not only reduces the adhesion force with the mucosa for easy removal after surgery, but also ensures intraoperative stability by increasing the surface friction coefficient. This design is particularly suitable for patients with a longer or flaccid epiglottis. During laryngoscopy, it can be seen that the epiglottis is stably maintained in the physiological position, which not only ensures the ventilation efficiency but also provides a clearer operation field for the glottis area.

[0064] Refer to Figures 6-7, a connecting band 17 is arranged between adjacent covering valves 16.

[0065] By arranging the connecting band 17, when multiple covering valves 16 move together, they can maintain stability, and at the same time, the covering valves 16 are in a stable state in the folded state and the extended state.

[0066] The silicone ring is hollow inside and filled with shear thickening fluid. By filling the shear thickening fluid, such as SiO2 particle suspension, inside the silicone ring, it locally hardens under high pressure and remains soft during normal ventilation, and locally hardens during coughing or high pressure to prevent deformation and air leakage.

[0067] The working principle of the present invention:

[0068] During use, hold the tube body 1 by hand, align one end of the cover body 3 with the posterior larynx of the patient. With the help of the camera 8, first insert the gastric channel 5 into the esophagus, then make the air block 14 cover the glottis. Next, use an inflation device such as a syringe to inject air into the control tube 6. After the expansion ring 7 expands, it is clamped in the esophagus. The air ring 12 and the air block 14 are inflated in sequence. The air block 14 covering the glottis improves the airtightness above the glottis. At the same time, after the covering valve 16 is inflated, it unfolds in a radial umbrella shape and turns upward, providing support when covering the back of the epiglottis and preventing the epiglottis from collapsing and blocking the airway.

[0069] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A visual glottic mask that is easy to insert, comprising a tube body (1), characterized in that: The upper end of the tube body (1) is provided with a connecting portion (2), the upper end of the connecting portion (2) is provided with a thin film-shaped cover body (3), the upper end of the cover body (3) is provided with a sealing component, and the sealing component is placed at the glottis; a pair of suction channels (4) are provided through the side wall of the tube body (1), an intragastric channel (5) is provided through the side wall of the tube body (1), a control tube (6) is provided on the inner wall of the intragastric channel (5), the intragastric channel (5) passes through the cover body (3) and the sealing component and is placed in the esophagus, an expansion ring (7) is provided on the tube wall of the intragastric channel (5) and above the sealing component, and the expansion ring (7) is hollow inside and communicates with the control tube (6); The sealing assembly comprises an air ring (12) connected to the upper end of the cover body (3); the air ring (12) is hollow inside; an air nozzle (13) for connecting to a control pipe (6) is arranged on the inner wall of the air ring (12); a plurality of air blocks (14) are distributed circumferentially on the upper end surface of the air ring (12); the air blocks (14) are hollow inside; and each air block (14) is connected to the inside of the air ring (12) via a connecting hole arranged on the air ring (12).

2. The visual glottis mask for easy insertion according to claim 1, characterized in that: The sealing component is a silicone ring, and the cross-section of the silicone ring at the side away from the intragastric passage (5) is larger than the cross-section at the side close to the intragastric passage (5).

3. The visual glottis mask for easy insertion according to claim 1, characterized in that: A camera (8) is arranged on the inner wall of the tube body (1) near the upper end of the tube opening.

4. The visual glottis mask for easy insertion according to claim 1, characterized in that: The outer wall of the upper end of the tube body (1) is provided with a protrusion (9), the inner wall of the connecting portion (2) is provided with a groove (10), and the protrusion (9) is engaged in the groove (10).

5. The visual glottis mask for easy insertion according to claim 1, characterized in that: The inner wall of the cover body (3) is provided with a spiral groove (11).

6. The visualization glottis mask for easy insertion according to claim 1, characterized in that: A plurality of slender elastic bands (15) are distributed on the surface of the gas block (14), and capillaries communicating with the gas block (14) are arranged in the elastic bands (15).

7. The visualization glottis mask for easy insertion according to claim 1, characterized in that: The inner wall of the air ring (12) is provided with covering valves (16) equidistantly distributed thereon. The covering valves (16) are hollow and communicate with the inside of the air ring (12). When the control tube (6) is not inflated, the covering valves (16) are folded on the inner wall of the air ring (12). When the control tube (6) is inflated, the covering valves (16) are straightened and cover the back of the epiglottis.

8. The visualization glottis mask for easy insertion according to claim 7, characterized in that: A connecting band (17) is provided between adjacent covering valves (16).

9. The visualization glottis mask for easy insertion according to claim 2, characterized in that: The silicone ring is hollow and filled with a shear thickening fluid.

Images