Oxygen supply mask and oxygen supply mask with ventilation pipeline

Abstract

The utility model discloses an oxygen supply mask and an oxygen supply mask with a ventilation pipeline, and the oxygen supply mask comprises a mask body, an annular air bag and an air intake and exhaust control assembly, an oxygen supply pipe is installed on the mask body, a hard bite block pipe and a hard flange are integrally formed on the mask body, and the hard flange is located on the outer wall of the mask body. An air pipe joint is mounted on the annular air bag; the air inlet and exhaust control assembly is installed on the mask body. The oxygen supply mask with the ventilation pipeline comprises an oropharynx ventilation catheter, a mask body, an annular air bag and an air intake and exhaust control assembly. According to the utility model, the closed state of the gap between the central cavity and the endoscope can be adjusted, and the convenience and safety of endoscopic examination are improved while the oxygen introduction efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of endoscope mask technology, and in particular to a dual-diameter oxygen supply suction guide type endoscope mask. Background Technology

[0002] In current medical practice, endoscopy is a commonly used diagnostic and treatment method, especially in the diagnosis of respiratory and digestive system diseases, where fiberoptic bronchoscopes are particularly widely used. During endoscopic examinations, it is usually necessary to provide the patient with oxygen while maintaining a clear view of the examination site. Traditionally, this involves wearing a face mask to provide oxygen and using a separate bite block to keep the patient's mouth open, facilitating the insertion and manipulation of the endoscope.

[0003] However, existing mask and mouthguard designs have several shortcomings. First, the mask and mouthguard are often not integrated into a single unit, but rather used as two separate components. This makes it difficult to keep them aligned in a straight line during actual operation, causing inconvenience for the doctor and potentially affecting the accuracy and safety of the examination. Second, during pressurized oxygenation, the lack of an effective seal between the mask and the endoscope results in low oxygenation efficiency.

[0004] Therefore, a dual-diameter oxygen supply and suction-guided endoscope mask is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a mask for a dual-diameter oxygen supply and suction-guided endoscope, aiming to solve or improve at least one of the above-mentioned technical problems.

[0006] To achieve the above objectives, this utility model provides the following solution: This utility model provides an oxygen supply mask, comprising:

[0007] The mask body has an oxygen supply tube installed on it. The mask body also has a rigid bite block tube and a rigid flange integrally formed thereon. The rigid flange is located on the outer wall of the mask body and at the end of the rigid bite block tube away from the mask body. A fixing strap assembly is installed on the rigid flange.

[0008] An annular airbag is installed on the inner wall of the rigid dental pad tube at one end near the rigid flange, and an air tube connector is installed on the annular airbag.

[0009] An air intake and exhaust control assembly is mounted on the mask body. The output end of the air intake and exhaust control assembly is detachably connected to the air pipe connector. The air intake and exhaust control assembly is used to adjust the inflation volume of the annular airbag.

[0010] According to the oxygen supply mask provided by this utility model, the outer wall of the rigid bite pad tube is provided with anti-slip bite teeth, and a bite pad stop is fixedly installed at the end of the outer wall of the rigid bite pad tube away from the annular airbag.

[0011] According to the oxygen supply mask provided by this utility model, the cross-section of the rigid dental pad tube is elliptical.

[0012] According to the oxygen supply mask provided by this utility model, a sealing gasket or airbag is installed at the edge of the mask body.

[0013] According to the oxygen supply mask provided by this utility model, the fixing strap assembly includes a fixing strap body and two fixing blocks. The two fixing blocks are fixedly installed on both sides of the outer wall of the rigid flange. The fixing blocks are provided with elongated grooves. The two ends of the fixing strap body pass through the two elongated grooves respectively. Velcro is installed on both sides of the fixing strap body. The two sides of the fixing strap body are detachably connected to the fixing blocks through the Velcro.

[0014] This utility model also provides an oxygen supply mask with a ventilation tube, including:

[0015] The mask body has an oxygen supply tube installed on it. The mask body also has a rigid bite block tube and a rigid flange integrally formed thereon. The rigid flange is located on the outer wall of the mask body and at the end of the rigid bite block tube away from the mask body. A fixing strap assembly is installed on the rigid flange.

[0016] An oropharyngeal ventilation tube, wherein the oropharyngeal ventilation tube passes through the rigid dental pad tube, one end of the oropharyngeal ventilation tube is detachably connected to the rigid flange, a central cavity is formed at the center of the side wall of the oropharyngeal ventilation tube, and a high-frequency air channel and a suction channel are formed on both sides of the oropharyngeal ventilation tube, respectively.

[0017] An annular airbag is installed on the inner wall of the central cavity near one end of the rigid flange, and an air tube connector is installed on the annular airbag.

[0018] An air intake and exhaust control assembly is mounted on the mask body. The output end of the air intake and exhaust control assembly is detachably connected to the air pipe connector. The air intake and exhaust control assembly is used to adjust the inflation volume of the annular airbag.

[0019] According to the oxygen supply mask with ventilation duct provided by this utility model, an annular flange is integrally formed on one side of the outer wall of the oropharyngeal ventilation duct, a plurality of insert rods are integrally formed on the rigid flange, and a plurality of slots are opened through the annular flange, and the plurality of insert rods are respectively inserted into the plurality of slots.

[0020] According to the oxygen supply mask with ventilation tube provided by this utility model, a plurality of limiting blocks are provided in a ring on the outer wall of the oropharyngeal ventilation tube. The limiting blocks are integrally formed with the oropharyngeal ventilation tube, and the limiting blocks abut against the end of the rigid dental pad tube away from the rigid flange.

[0021] According to the oxygen supply mask with ventilation pipe provided by this utility model, the inner wall of the slot is fixed with a number of arc-shaped protrusions, and the insertion rod is provided with a number of arc-shaped grooves, the arc-shaped grooves being adapted to the shape of the arc-shaped protrusions.

[0022] According to the oxygen supply mask with ventilation pipe provided by this utility model, the air intake and exhaust control component includes a micro air pump, a first air pipe and a second air pipe. The micro air pump is installed on the outer wall of the mask body. The air intake end of the micro air pump is equipped with an air intake pipe and the exhaust end is equipped with an exhaust pipe.

[0023] Both the exhaust pipe and the second air pipe are fixedly connected to and communicate with the first air pipe through a ventilation diversion valve; a check valve is installed on the exhaust pipe, the first air pipe is detachably connected to the air pipe connector, and the first air pipe communicates with the inner cavity of the annular airbag through the air pipe connector.

[0024] The present invention discloses the following technical effects:

[0025] This invention ensures that the mask and the rigid dental pad tube are aligned on the same straight line by integrally molding a rigid dental pad tube and a rigid flange on the mask body. This reduces the operational difficulty and risk caused by component misalignment, provides doctors with a more stable and reliable endoscopic examination environment, and significantly improves the convenience and safety of endoscopic examination.

[0026] This invention uses an air intake and exhaust control component to adjust the inflation volume of the annular airbag, thereby realizing the inflation and deflation of the annular airbag. When the annular airbag is inflated, the airbag seals the gap between the central cavity and the endoscope, effectively preventing oxygen leakage, improving oxygenation efficiency, and ensuring the patient's oxygen supply during the examination. When the annular airbag is deflated, the airbag deflates, opening the gap between the central cavity and the endoscope, facilitating the insertion of the fiberoptic bronchial endoscope along the central cavity into the patient's body for endoscopic examination.

[0027] In use, this invention involves placing the mask over the patient's face, inserting the rigid dental pad tube into the patient's mouth for bite positioning of the incisors, and securing it to the patient's head with a fixing strap assembly. Then, the oropharyngeal ventilation tube is inserted through the rigid dental pad tube into the patient's oropharynx. The oropharyngeal ventilation tube and the rigid dental pad tube are then assembled and connected for subsequent examination procedures. The suction channel allows for easy connection to suction equipment, enabling timely removal of secretions, blood, or reflux generated during the examination, maintaining a clear endoscopic view, and improving the accuracy and safety of the examination. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is the front view of the present invention;

[0030] Figure 2 This is a schematic diagram of the structure of this utility model;

[0031] Figure 3 for Figure 2 A magnified view of part A in the image;

[0032] Figure 4 for Figure 2 A magnified view of part B in the image;

[0033] Figure 5 for Figure 2 A magnified view of part C;

[0034] Figure 6 This is a schematic diagram of the annular airbag in the deflated state in this utility model;

[0035] Figure 7 This is a schematic diagram of the installation of the Velcro in this utility model.

[0036] The components include: 1. Mask body; 2. Oxygen supply tube; 3. Rigid bite block tube; 4. Rigid wing; 5. Oropharyngeal ventilation tube; 6. Central cavity; 7. High-frequency air channel; 8. Suction channel; 9. Annular airbag; 10. Tracheal connector; 11. Miniature air pump; 12. Inlet tube; 13. Exhaust tube; 14. First tracheal tube; 15. Second tracheal tube; 16. Check valve; 17. Annular wing; 18. Insert rod; 19. Slot; 20. Arc-shaped protrusion; 21. Arc-shaped groove; 22. Limiting block; 23. Sealing gasket; 24. Fixing strap body; 25. Fixing block; 26. Velcro textured surface; 27. Velcro barbed surface; 28. Anti-slip bite teeth; 29. ​​Bite block. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] Reference Figures 1-7 This utility model provides an oxygen supply mask, comprising:

[0040] The mask body 1 has an oxygen supply tube 2 installed on it. The mask body 1 has a rigid bite pad tube 3 and a rigid flange 4 integrally formed on it. The rigid flange 4 is located on the outer wall of the mask body 1 and is located at the end of the rigid bite pad tube 3 away from the mask body 1. A fixing strap assembly is installed on the rigid flange 4.

[0041] An annular airbag 9 is installed on the inner wall of the rigid dental pad tube 3 at one end near the rigid flange 4, and an air tube connector 10 is installed on the annular airbag 9.

[0042] An air intake and exhaust control assembly is installed on the mask body 1. The output end of the air intake and exhaust control assembly is detachably connected to the air pipe connector 10. The air intake and exhaust control assembly is used to adjust the inflation volume in the annular airbag 9.

[0043] With this configuration, the oxygen supply mask provided by this utility model can adjust the inflation volume of the annular airbag 9 through the air intake and exhaust control component, thereby adjusting the gap between the end of the rigid dental pad tube 3 and the endoscope.

[0044] The design has been further optimized by adding anti-slip occlusal grooves 28 to the outer wall of the rigid dental pad tube 3, which increases the friction when the patient bites, prevents the rigid dental pad tube 3 from slipping or shifting during use, and ensures the patient's comfort and safety.

[0045] Further optimization of the design resulted in an elliptical cross-section for the rigid dental pad tube 3.

[0046] Further optimization of the design resulted in the rigid dental pad tube 3 being made of a transparent material.

[0047] In a further optimized design, a dental pad stop 29 is fixedly installed on the outer wall of the rigid dental pad tube 3 at the end away from the annular airbag 9. By setting the dental pad stop 29, the patient's teeth are prevented from slipping or shifting between the rigid dental pad tube 3 during use, thus ensuring the patient's comfort and safety.

[0048] The design is further optimized by installing a sealing gasket 23 or an airbag at the edge of the mask body 1. When the mask body 1 is placed on the patient's face, the sealing gasket 23 fits tightly against the patient's face to prevent oxygen leakage and improve oxygenation efficiency.

[0049] Further optimization of the solution: the fixing strap assembly includes a fixing strap body 24 and two fixing blocks 25. The two fixing blocks 25 are fixedly installed on both sides of the outer wall of the rigid flange 4. The fixing blocks 25 are provided with long slots. The two ends of the fixing strap body 24 pass through the two long slots respectively. Both sides of the fixing strap body 24 are equipped with Velcro. The two sides of the fixing strap body 24 are detachably connected to the fixing blocks 25 through Velcro.

[0050] The hook and loop fastener includes a hook and loop loop surface 26 and a hook and loop loop barbed surface 27 that are detachably connected to each other. The hook and loop loop surface 26 is fixedly installed at the center of the fastening strap body 24. There are two hook and loop loop surfaces 27, which are fixedly connected to both sides of the fastening strap body 24. The two hook and loop loop surfaces 27 and the hook and loop loop surface 26 are located on the same side of the fastening strap body 24.

[0051] This utility model also provides an oxygen supply mask with a ventilation tube, including:

[0052] The mask body 1 has an oxygen supply tube 2 installed on it. The mask body 1 has a rigid bite pad tube 3 and a rigid flange 4 integrally formed on it. The rigid flange 4 is located on the outer wall of the mask body 1 and is located at the end of the rigid bite pad tube 3 away from the mask body 1. A fixing strap assembly is installed on the rigid flange 4.

[0053] The oropharyngeal airway 5 passes through the rigid dental pad tube 3. One end of the oropharyngeal airway 5 is detachably connected to the rigid flange 4. A central cavity 6 is opened at the center of the side wall of the oropharyngeal airway 5. A high-frequency air channel 7 and a suction channel 8 are opened on both sides of the oropharyngeal airway 5, respectively. The channel on the left side can serve as both a high-frequency air channel and a suction channel, while the channel on the right side serves as a suction channel.

[0054] An annular airbag 9 is installed on the inner wall of the central cavity 6 at one end near the rigid flange 4, and an air tube connector 10 is installed on the annular airbag 9.

[0055] An air intake and exhaust control assembly is installed on the mask body 1. The output end of the air intake and exhaust control assembly is detachably connected to the air pipe connector 10. The air intake and exhaust control assembly is used to adjust the inflation volume in the annular airbag 9.

[0056] With this configuration, the present invention ensures that the mask body 1 and the rigid dental pad tube 3 are on the same straight line by integrally molding the rigid dental pad tube 3 and the rigid flange 4 on the mask body 1, which reduces the operational difficulty and risk caused by component misalignment, provides doctors with a more stable and reliable endoscopic examination environment, and significantly improves the convenience and safety of endoscopic examination.

[0057] This invention adjusts the inflation volume of the annular airbag 9 through an air intake and exhaust control component, thereby realizing the inflation and deflation operations of the annular airbag 9. When the annular airbag 9 is inflated, the airbag 9 seals the gap between the central cavity 6 and the endoscope, effectively preventing oxygen leakage, improving oxygenation efficiency, and ensuring the patient's oxygen supply during the examination. When the annular airbag 9 is deflated, the airbag 9 deflates and opens the gap between the central cavity 6 and the endoscope, making it easier for the fiberoptic bronchial endoscope to be inserted into the patient's body along the central cavity 6 for endoscopic examination.

[0058] In use, the mask body 1 is placed over the patient's face, and the rigid bite pad tube 3 is inserted into the patient's mouth for bite positioning of the incisors. It is then secured to the patient's head using a fixing strap assembly. The oropharyngeal ventilation tube 5 is then inserted through the rigid bite pad tube 3 into the patient's oropharynx. The oropharyngeal ventilation tube 5 and the rigid bite pad tube 3 are then assembled and connected for subsequent examination procedures. The suction channel 8 allows for easy connection to a suction device, enabling timely removal of secretions, blood, or reflux generated during the examination, maintaining a clear endoscopic view, and improving the accuracy and safety of the examination. This invention is applicable to all cases of intravenous general anesthesia and the management of most patients with difficult airways.

[0059] To further optimize the design, a high-frequency air intake connector is detachably connected to the inlet end of the high-frequency air channel 7. The high-frequency air intake connector is connected to the inlet end of the high-frequency air channel 7 by screwing.

[0060] The design is further optimized by adding removable sealing plugs to both the inlet of the high-frequency air channel 7 and the inlet of the suction channel 8, which can seal off the high-frequency air channel 7 and the suction channel 8.

[0061] In a further optimized design, an annular flange 17 is integrally formed on one side of the outer wall of the oropharyngeal ventilation tube 5, and several insert rods 18 are integrally formed on the rigid flange 4. Several slots 19 are opened through the annular flange 17, and the insert rods 18 are respectively inserted into the slots 19 to achieve a detachable connection between the oropharyngeal ventilation tube 5 and the rigid flange 4.

[0062] To further optimize the design, several limiting blocks 22 are arranged in a ring on the outer wall of the oropharyngeal airway 5. The limiting blocks 22 are integrally formed with the oropharyngeal airway 5. The limiting blocks 22 abut against the end of the rigid dental pad tube 3 away from the rigid flange 4, which further increases the stability of the oropharyngeal airway 5 and the rigid dental pad tube 3 after assembly.

[0063] In a further optimized design, the inner wall of the slot 19 is fixed with several arc-shaped protrusions 20, and the insertion rod 18 is provided with several arc-shaped grooves 21. The arc-shaped grooves 21 are adapted to the shape of the arc-shaped protrusions 20. When the insertion rod 18 is inserted into the slot 19, the arc-shaped protrusions 20 and the arc-shaped grooves 21 fit together, increasing the friction of the connection and preventing the oropharyngeal ventilation tube 5 from falling off during use.

[0064] Further optimization of the scheme: the intake and exhaust control component includes a miniature air pump 11, a first air pipe 14 and a second air pipe 15. The miniature air pump 11 is installed on the outer wall of the mask body 1. The intake end of the miniature air pump 11 is equipped with an intake pipe 12 and the exhaust end is equipped with an exhaust pipe 13.

[0065] Both the exhaust pipe 13 and the second air pipe 15 are fixedly connected to and connected to the first air pipe 14 through the air exchange diversion valve; a check valve 16 is installed on the exhaust pipe 13; the first air pipe 14 is detachably connected to the air pipe connector 10; the first air pipe 14 is connected to the inner cavity of the annular airbag 9 through the air pipe connector 10.

[0066] In this embodiment, the check valve 16 is a spring-loaded one-way valve. With this configuration, the miniature air pump 11 draws in outside air through the air inlet pipe 12 and discharges it through the exhaust pipe 13. The gas diversion valve can switch the direction of gas flow, allowing the gas to selectively enter the first air pipe 14 or the second air pipe 15. When it is necessary to inflate the annular airbag 9, the gas diversion valve guides the gas to the first air pipe 14. The first air pipe 14 is detachably connected to the air pipe connector 10 and communicates with the inner cavity of the annular airbag 9 through the air pipe connector 10. After the gas enters the annular airbag 9, it expands and tightly fits the gap between the central cavity 6 and the endoscope.

[0067] The spring-loaded check valve installed on the exhaust pipe 13 can prevent gas backflow and ensure the correct gas flow direction; when exhaust is required, the air diversion valve switches to the second air pipe 15 to discharge the gas in the annular airbag 9.

[0068] Example 2

[0069] The difference between this embodiment and embodiment 1 is that the intake and exhaust control component adopts a manual airbag. The manual airbag is detachably connected to the air pipe connector 10. During operation, the airbag is squeezed to supply air to the annular airbag 9. When deflation is required, the manual airbag is detached to perform the deflation operation.

[0070] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0071] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. For those skilled in the art, other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An oxygen face mask, characterized in that include: A mask body (1) is provided with an oxygen supply tube (2). A rigid bite block tube (3) and a rigid flange (4) are integrally formed on the mask body (1). The rigid flange (4) is located on the outer wall of the mask body (1) and at one end of the rigid bite block tube (3) away from the mask body (1). A fixing strap assembly is installed on the rigid flange (4). An annular airbag (9) is installed on the inner wall of the rigid dental pad tube (3) at one end near the rigid flange (4), and an air tube connector (10) is installed on the annular airbag (9). An air intake and exhaust control assembly is installed on the mask body (1). The output end of the air intake and exhaust control assembly is detachably connected to the air pipe connector (10). The air intake and exhaust control assembly is used to adjust the inflation volume of the annular airbag (9).

2. The oxygen supply mask of claim 1, wherein: The outer wall of the hard dental pad tube (3) is provided with anti-slip bite marks (28), and a dental pad stop (29) is fixedly installed at the end of the outer wall of the hard dental pad tube (3) away from the annular airbag (9).

3. The oxygen supply mask of claim 1, wherein: The cross-section of the rigid dental pad tube (3) is elliptical.

4. The oxygen supply mask of claim 1, wherein: A sealing gasket (23) or an airbag is installed at the edge of the mask body (1).

5. The oxygen supply mask of claim 1, wherein: The fixing strap assembly includes a fixing strap body (24) and two fixing blocks (25). The two fixing blocks (25) are fixedly installed on both sides of the outer wall of the rigid flange (4). The fixing blocks (25) are provided with elongated grooves. The two ends of the fixing strap body (24) pass through the two elongated grooves respectively. Both sides of the fixing strap body (24) are equipped with Velcro. The two sides of the fixing strap body (24) are detachably connected to the fixing blocks (25) through the Velcro.

6. An oxygen face mask with a venting conduit, characterized in that, include: A mask body (1) is provided with an oxygen supply tube (2). A rigid bite block tube (3) and a rigid flange (4) are integrally formed on the mask body (1). The rigid flange (4) is located on the outer wall of the mask body (1) and at one end of the rigid bite block tube (3) away from the mask body (1). A fixing strap assembly is installed on the rigid flange (4). Oropharyngeal ventilation tube (5), the oropharyngeal ventilation tube (5) passes through the rigid dental pad tube (3), one end of the oropharyngeal ventilation tube (5) is detachably connected to the rigid flange (4), a central cavity (6) is opened at the center of the side wall of the oropharyngeal ventilation tube (5), and a high-frequency air channel (7) and a suction channel (8) are respectively opened on both sides of the oropharyngeal ventilation tube (5); An annular airbag (9) is installed on the inner wall of the central cavity (6) near one end of the rigid flange (4), and an air tube connector (10) is installed on the annular airbag (9). An air intake and exhaust control assembly is installed on the mask body (1). The output end of the air intake and exhaust control assembly is detachably connected to the air pipe connector (10). The air intake and exhaust control assembly is used to adjust the inflation volume of the annular airbag (9).

7. The oxygen face mask with a vented conduit of claim 6, wherein: The oropharyngeal ventilation tube (5) has an integrally formed annular flange (17) on one side of its outer wall. A plurality of insert rods (18) are integrally formed on the rigid flange (4). A plurality of slots (19) are provided through the annular flange (17). The plurality of insert rods (18) are respectively inserted into the plurality of slots (19).

8. The oxygen face mask with a vented conduit of claim 6, wherein: The oropharyngeal airway (5) has a plurality of limiting blocks (22) arranged in a ring on its outer wall. The limiting blocks (22) are integrally formed with the oropharyngeal airway (5). The limiting blocks (22) abut against the end of the rigid dental pad tube (3) away from the rigid flange (4).

9. The oxygen face mask with a vented conduit of claim 7, wherein: The inner wall of the slot (19) is fixed with several arc-shaped protrusions (20), and the insert rod (18) is provided with several arc-shaped grooves (21), the arc-shaped grooves (21) being adapted to the shape of the arc-shaped protrusions (20).

10. The oxygen supply mask of claim 6, wherein: The intake and exhaust control assembly includes a micro air pump (11), a first air pipe (14), and a second air pipe (15). The micro air pump (11) is installed on the outer wall of the mask body (1). The intake end of the micro air pump (11) is equipped with an intake pipe (12), and the exhaust end is equipped with an exhaust pipe (13). The exhaust pipe (13) and the second air pipe (15) are both fixedly connected to and communicate with the first air pipe (14) through the air exchange diversion valve; a check valve (16) is installed on the exhaust pipe (13); the first air pipe (14) is detachably connected to the air pipe connector (10); the first air pipe (14) is communicated with the inner cavity of the annular airbag (9) through the air pipe connector (10).

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