Anti-suffocation device

By designing a pull-out box assembly and breathing mask for the anti-suffocation device, and utilizing the pressure change of the one-way valve, the suffocation problem caused by foreign object blockage is solved, and the effect of quickly clearing the airway is achieved.

CN223615224UActive Publication Date: 2025-12-02ZHEJIANG YIZAI MEDICAL TECH CO LTD
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Patent Information

Application Number
CN202422374529.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-27
Publication Date
2025-12-02
Estimated Expiration
2034-09-27

AI Technical Summary

Technical Problem

Current technology lacks effective emergency tools to clear the airway, which can lead to suffocation when foreign objects block the airway, especially in young children and the elderly.

Method used

An anti-suffocation device was designed, including a pull-out box assembly and a breathing mask. Through the cooperation of a connecting tube and a one-way valve, foreign objects are sucked out by changes in air pressure. The device includes a pull-out box assembly, a breathing mask and a connecting tube. A one-way air inlet valve is provided on the inner side of the lower part of the connecting tube and a one-way air outlet valve is provided on the upper part. Foreign objects are sucked out by repeated operation to change the air pressure.

Benefits of technology

It enables rapid and effective airway clearing, prevents suffocation, simplifies single-person operation, and improves clearing efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to an anti-suffocation device which comprises a drawing box assembly, a breathing mask and a connecting pipe, the two ends of the connecting pipe are detachably connected to the drawing box assembly and the breathing mask in an inserted mode, the connecting pipe is communicated with a bag cavity and a mask cavity, the drawing box assembly comprises a bag body, and the bag cavity which can be repeatedly compressed and filled is formed in the bag body of the drawing box assembly. A mask cavity is formed in the breathing mask after the breathing mask is attached to the face of the human body, a one-way air inlet valve allowing the mask cavity to feed air into the bag cavity is arranged on the inner side of the lower portion of the connecting pipe, and at least one one-way air outlet valve allowing the bag cavity to discharge air outwards is arranged on the side wall, above the one-way air inlet valve, of the connecting pipe. During use, the space of the bag cavity is reduced by acting on the drawing box assembly, internal air is discharged from the one-way air outlet valve, and the air pressure in the bag cavity is increased; the air pressure in the bag cavity is reduced, and the air flow in the respiratory tract and the air flow in the mask cavity enter the bag cavity through the one-way air inlet valve; and repeating the two actions until the foreign matters are sucked out of the respiratory tract.
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Description

Technical Field

[0001] This utility model relates to the field of medical equipment technology, and in particular to an anti-asphyxiation device. Background Technology

[0002] In the human body, the airway for breathing and the esophagus for food passage share a common entrance, namely the mouth. During eating, especially in young children and the elderly, improper handling can easily cause food to enter the airway through the esophagus, leading to choking, coughing, and in severe cases, even suffocation.

[0003] Currently, there are no effective emergency tools to help people clear their airways. People mainly try to clear the airways by patting the back of the person choking, but this method requires the help of others and is not very effective. Summary of the Invention

[0004] In order to solve the above problems, the purpose of this utility model is to provide an anti-suffocation device that can help users remove foreign objects from their airways, thereby solving the suffocation problem caused by foreign object blockage.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An anti-asphyxiation device includes a pull-out box assembly and a breathing mask. The pull-out box assembly includes a bladder, within which a bladder cavity that can be repeatedly compressed and inflated is formed. The breathing mask, when fitted to the human face, forms a mask cavity. The device is characterized by further including a connecting tube whose two ends are detachably inserted into the pull-out box assembly and the breathing mask, connecting the bladder cavity and the mask cavity. The lower inner side of the connecting tube is provided with a one-way air inlet valve allowing air from the mask cavity into the bladder cavity, and at least one one-way air outlet valve is provided on the side wall of the connecting tube above the one-way air inlet valve, allowing air from the bladder cavity to escape. The connecting tube includes an upper tube and a lower tube. The upper tube is inserted into the lower end of the pull-out box assembly, and the lower tube is inserted into the breathing mask. The one-way air inlet valve is located on the inner side of the lower tube, and the one-way air outlet valve is located on the side wall of the upper tube.

[0007] In the above technical solution, the anti-asphyxiation device includes a pull-out box assembly, a breathing mask, and a connecting tube connecting the pull-out box assembly and the breathing mask. A one-way air inlet valve is provided on the lower inner wall of the connecting tube, and at least one one-way air outlet valve is provided on the side wall of the connecting tube above the one-way air inlet valve. In use, the breathing mask is placed over the user's mouth, so that the mask cavity is connected to the user's airway. The pull-out box assembly reduces the space of the capsule cavity, causing internal air to be expelled through the one-way air outlet valve, increasing the air pressure inside the capsule cavity. The pull-out box assembly then increases the space of the capsule cavity, reducing the air pressure inside the capsule cavity, allowing airflow from the airway and the mask cavity to enter the capsule cavity through the one-way air inlet valve. These two actions are repeated until the foreign object is suctioned out of the airway.

[0008] It should be noted that multiple one-way exhaust valves can be set to increase exhaust efficiency.

[0009] Preferably, the upper tube and the lower tube are integrally formed.

[0010] Preferably, the sidewall of the upper tube extends outward to form at least one convex ring, and each convex ring has a through hole; the one-way air valve is disposed in the through hole of the convex ring. In this technical solution, the convex ring on the sidewall of the upper tube improves the structural strength of the connecting pipe and facilitates the installation of the one-way air valve. In addition, the convex ring protrudes from the sidewall of the pipe, which can further reduce the influence of the one-way air valve when air is introduced into the bladder cavity. It should be noted that both the inner and outer walls of the upper tube have a certain degree of inclination. The inclination of the outer wall facilitates the insertion with the pull-out box assembly, and the inclination of the inner wall can increase the air intake.

[0011] Preferably, the diameter of the lower tube is larger than that of the upper tube, and a ventilation column communicating with the mask cavity is provided on the upper surface of the breathing mask. The ventilation column is inserted into the lower tube of the connecting tube. In this technical solution, the diameter of the lower tube is larger than that of the upper tube. After the breathing mask is inserted into the lower tube through the ventilation column, the diameter of the ventilation column can be set relatively large, which can improve the air intake effect.

[0012] Preferably, the pull-out box assembly further includes a grip and a lower connecting cover respectively connected to the upper and lower ends of the bladder body. The grip and the lower connecting cover seal the upper and lower ends of the bladder cavity. The lower connecting cover has a flow port in the middle that communicates with the bladder cavity, and the upper end of the connecting tube is tensioned and positioned inside the flow port. In this technical solution, the pull-out box assembly includes a bladder body, and grips and a lower connecting cover that seal both sides of the bladder body, providing a better sealing effect. Users can compress or unfold the bladder body by applying pressure to the grips, which is more convenient. Furthermore, the connection tube is tensioned and positioned inside the flow port, ensuring a stable assembly structure and effectively preventing air leakage inside the bladder cavity.

[0013] Preferably, the lower connecting cover has a lower connecting groove on the outer side of the guide port, and the inner wall of the lower connecting groove is provided with a lower connecting thread. The lower end of the bladder is formed with a lower connecting ring, and the side wall of the lower connecting ring is provided with a first external thread that mates with the lower connecting thread. A sealing groove is formed around the bottom surface of the lower connecting groove, and a sealing ring is provided inside the sealing groove. In this technical solution, the lower end of the bladder is formed with a lower connecting ring, which is threadedly connected to the lower connecting cover, making disassembly and assembly very convenient and avoiding the inconvenience and easy damage problems caused by direct assembly of the bladder. In addition, a sealing ring is also provided inside the lower connecting cover to improve the airtightness of the connection between the bladder and the lower connecting cover and prevent air leakage.

[0014] Preferably, the grip is formed by splicing two pieces together. The lower part of the grip forms an upper connecting cover, and the upper part forms a handle. The handle is configured in an arc shape and forms a grip opening between it and the upper connecting cover. In this technical solution, the grip is formed by splicing two pieces together, which is easy to process, disassemble, and clean. At the same time, the lower part of the grip forms an upper connecting cover for connecting the bladder body, and the upper part is an arc-shaped handle with a grip opening between it and the upper connecting cover, making it more comfortable to hold and easier to pull out.

[0015] Preferably, the bottom surface of the upper connecting cover has an upper connecting groove, and the side wall of the upper connecting groove has an upper connecting thread. The upper end of the bladder body has an upper connecting ring, and the side wall of the upper connecting ring has a second external thread that mates with the upper connecting thread. In this technical solution, the upper end of the bladder body has an upper connecting ring, which is threadedly connected to the upper connecting cover, making it convenient to assemble and disassemble the gripper and the bladder body, avoiding the inconvenience and easy damage caused by direct assembly of the bladder body.

[0016] Preferably, a sealing gasket is fitted onto the bottom surface of the upper connecting groove. In this technical solution, since the gripping component is a spliced ​​component, a sealing gasket is provided at the bottom of the upper connecting groove to improve the airtightness of the connection between the two.

[0017] Preferably, the outer edge of the lower connecting cover forms a lower retaining ring upwards on the outer side of the bladder body, and / or the outer edge of the upper connecting cover forms an upper retaining ring downwards on the outer side of the bladder body; during bladder compression, the upper end of the bladder body can partially extend into the upper retaining ring of the upper connecting cover and / or the lower end of the bladder body can partially extend into the lower retaining ring of the lower connecting cover. In this technical solution, the lower retaining ring and / or the upper retaining ring allow the upper and lower ends of the bladder body to partially extend into the retaining rings during bladder compression, thereby reducing the possibility of bladder body misalignment and compression, and playing a guiding role. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of an anti-suffocation device.

[0019] Figure 2 This is a front structural diagram of an anti-suffocation device.

[0020] Figure 3 This is a side view of an anti-suffocation device.

[0021] Figure 4 Figure 3 shows a schematic diagram of the CC-direction cross-sectional structure.

[0022] Figure 5 This is a three-dimensional structural diagram of the connecting pipe.

[0023] Figure 6 This is a three-dimensional structural diagram of the connecting pipe from another perspective.

[0024] Figure 7 This is a schematic diagram of the arrangement of the convex rings.

[0025] Figure 8 This is a three-dimensional structural diagram of a one-way valve.

[0026] Figure 9 This is a three-dimensional structural diagram of a one-way valve from another perspective.

[0027] Figure 10 This is a schematic diagram of the three-dimensional structure of the cyst.

[0028] Figure 11 This is a schematic diagram of the three-dimensional structure of the cyst from another perspective.

[0029] Figure 12 This is a three-dimensional structural diagram of the lower connecting cover.

[0030] Figure 13 This is a schematic diagram of the three-dimensional structure of the gripping component.

[0031] Figure 14 This is a three-dimensional structural diagram of a breathing mask.

[0032] Figure 15 This is a three-dimensional structural diagram of a breathing mask from another perspective. Detailed Implementation

[0033] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0034] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", 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 simplifying the description, 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.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more, unless otherwise expressly defined.

[0036] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] like Figures 1-4The illustrated anti-asphyxiation device includes a pull-out box assembly 1, a breathing mask 2, and a connecting tube 3 whose two ends are detachably inserted into the pull-out box assembly 1 and the breathing mask 2, and which connects the bladder cavity 111 and the mask cavity 21. The pull-out box assembly 1 includes a bladder body 11, and the pull-out box assembly 1 forms a bladder cavity 111 that can be repeatedly compressed and inflated within the bladder body 11. The breathing mask 2 forms a mask cavity 21 inside after it is fitted to the human face. The lower inner side of the connecting tube 3 is provided with a one-way air inlet valve 4 that allows air to enter the bladder cavity 111 from the mask cavity 21. At least one one-way air outlet valve 5 is provided on the side wall of the connecting tube 3 above the one-way air inlet valve 4 that allows air to exit the bladder cavity 111.

[0039] In the above technical solution, the anti-asphyxiation device includes a pull-out box assembly, a breathing mask, and a connecting tube connecting the pull-out box assembly and the breathing mask. A one-way air inlet valve is provided on the lower inner wall of the connecting tube, and at least one one-way air outlet valve is provided on the side wall of the connecting tube above the one-way air inlet valve. In use, the breathing mask is placed over the user's mouth, so that the mask cavity is connected to the user's airway. The pull-out box assembly reduces the space of the capsule cavity, causing internal air to be expelled through the one-way air outlet valve, increasing the air pressure inside the capsule cavity. The pull-out box assembly then increases the space of the capsule cavity, reducing the air pressure inside the capsule cavity, allowing airflow from the airway and the mask cavity to enter the capsule cavity through the one-way air inlet valve. These two actions are repeated until the foreign object is suctioned out of the airway.

[0040] It should be noted that multiple one-way exhaust valves can be set to increase exhaust efficiency.

[0041] like Figures 5-7 As shown, the connecting pipe 3 includes an integrally formed upper pipe 31 and a lower pipe 32. The upper pipe 31 is inserted into the lower end of the pull-out box assembly 1, and the lower pipe 32 is inserted into the breathing mask 2. The one-way air inlet valve 4 is located on the inner side of the lower pipe 32, and the one-way air outlet valve 5 is located on the side wall of the upper pipe 31.

[0042] Furthermore, the sidewall of the upper tube 31 extends outward to form at least one protrusion 311, and each protrusion 311 has a through hole 312; the one-way air valve 5 is disposed in the through hole 312 within the protrusion 311. In this technical solution, the protrusion on the sidewall of the upper tube improves the structural strength of the connecting tube and facilitates the installation of the one-way air valve. In addition, the protrusion protrudes from the sidewall of the tube, which can further reduce the influence of the one-way air valve when air is introduced into the bladder cavity. It should be noted that both the inner and outer walls of the upper tube have a certain degree of inclination. The inclination of the outer wall facilitates insertion with the pull-out box assembly, and the inclination of the inner wall can increase the air intake.

[0043] Furthermore, the diameter of the lower pipe 32 is larger than the diameter of the upper pipe 31, such as... Figures 14-15As shown, a ventilation column 22 communicating with the mask cavity 21 is provided on the upper surface of the breathing mask 2. The ventilation column 22 is inserted into the lower tube 32 of the connecting tube 3. In this technical solution, the diameter of the lower tube is larger than the diameter of the upper tube. After the breathing mask is inserted into the lower tube through the ventilation column, the diameter of the ventilation column can be set relatively large, which can improve the air intake effect.

[0044] It should be noted here that, in combination Figure 8 and Figure 9 In this case, both the one-way exhaust valve and the one-way intake valve are umbrella valves, including a silicone sheet and a valve core 103 mounted on the silicone sheet. The head portion of the valve core 103 is formed within the silicone sheet. The silicone sheet includes a main body 102 and an annular blocking portion 101 formed obliquely on the edge of the main body 102. The valve core 103 is provided with an anti-detachment protrusion 104. A cross-shaped support strip 100 is provided in the through hole of the connecting pipe and on the inner side of the connecting pipe, forming multiple air holes 106. The middle of the support strip 100 is provided with an assembly hole 105 for mounting the valve core 103. The anti-detachment protrusion 104 is positioned inside the assembly hole 105 relative to the head of the valve core 103 to prevent the valve core 103 from detaching.

[0045] When the one-way vent valve releases air, the umbrella valve's shield 101, located on the side wall, flips outward, and the air inside the bladder cavity comes out through the vent 106.

[0046] When air is introduced through the one-way inlet valve, the shielding part 101 of the umbrella valve located inside the connecting tube flips upward, and the airflow in the respiratory tract flows from the air hole 106 into the bladder cavity.

[0047] like Figure 1 and Figure 13 As shown, the pull-out box assembly 1 also includes a gripper 12 and a lower connecting cover 13 connected to the upper and lower ends of the bladder body 11, respectively. The gripper 12 and the lower connecting cover 13 seal the upper and lower ends of the bladder cavity 111. The lower connecting cover 13 has a guide port 131 communicating with the bladder cavity 111 in the middle. The upper end of the connecting tube 3 is tensioned and set inside the guide port 131. In this technical solution, the pull-out box assembly includes a bladder body, as well as grippers and a lower connecting cover sealed on both sides of the bladder body, which provides a good sealing effect. Users can compress or unfold the bladder body by applying force to the gripper, which is more convenient. Furthermore, the connecting tube is tensioned and set inside the guide port, ensuring a stable assembly structure and effectively preventing air leakage inside the bladder cavity.

[0048] like Figures 10-12As shown, the lower connecting cover 13 has a lower connecting groove 132 on the outer side of the guide port 131. The inner wall of the lower connecting groove 132 is provided with a lower connecting thread 133. The lower end of the bladder 11 is formed with a lower connecting ring 112, and the side wall of the lower connecting ring 112 is provided with a first external thread 113 that mates with the lower connecting thread 133. A sealing groove 134 is formed around the bottom surface of the lower connecting groove 132, and a sealing ring 135 is provided inside the sealing groove 134. In this technical solution, the lower end of the bladder is formed with a lower connecting ring, which is threadedly connected to the lower connecting cover, making assembly and disassembly very convenient and avoiding the inconvenience and easy damage problems caused by direct assembly of the bladder. In addition, a sealing ring is also provided inside the lower connecting cover to improve the airtightness of the connection between the bladder and the lower connecting cover and prevent air leakage.

[0049] like Figure 13 As shown, the grip 12 is formed by splicing two pieces. The lower part of the grip 12 forms an upper connecting cover 121, and the upper part forms a handle 122. The handle 122 is configured in an arc shape and forms a grip opening 123 between the handle and the upper connecting cover 121. In this technical solution, the grip is formed by splicing two pieces, which is easy to process, disassemble, and clean. At the same time, the lower part of the grip forms an upper connecting cover for connecting the bladder body, and the upper part is an arc-shaped handle. The grip opening is formed between the handle and the upper connecting cover, making it more comfortable to hold and easier to pull out.

[0050] Furthermore, the bottom surface of the upper connecting cover 121 is formed with an upper connecting groove 1211, and the side wall of the upper connecting groove 1211 is provided with an upper connecting thread 1212. The upper end of the bladder 11 is formed with an upper connecting ring 114, and the side wall of the upper connecting ring 114 is provided with a second external thread 115 that mates with the upper connecting thread 1212. In this technical solution, the upper end of the bladder is formed with an upper connecting ring, and the upper connecting ring is threadedly connected to the upper connecting cover, making it convenient to assemble and disassemble the gripper and the bladder, avoiding the inconvenience and easy damage caused by direct assembly of the bladder.

[0051] Furthermore, a sealing gasket 1214 is attached to the bottom surface of the upper connecting groove 1211. In this technical solution, since the gripping component is a spliced ​​component, a sealing gasket is provided at the bottom of the upper connecting groove to improve the airtightness of the connection between the two.

[0052] like Figure 12 and Figure 13As shown, the outer edge of the lower connecting cover 13 forms a lower retaining ring 136 upward on the outside of the bladder body 11, and / or the outer edge of the upper connecting cover 121 forms an upper retaining ring 1213 downward on the outside of the bladder body 11; during the compression of the bladder body 11, the upper end of the bladder body 11 can partially extend into the upper retaining ring 1213 of the upper connecting cover 121 and / or the lower end of the bladder body 11 can partially extend into the lower retaining ring 136 of the lower connecting cover 13. In this technical solution, the setting of the lower retaining ring and / or the upper retaining ring allows the upper and lower ends of the bladder body to partially extend into the retaining ring during the compression of the bladder body, thereby reducing the possibility of misalignment and compression of the bladder body and playing a guiding role.

[0053] In this specific embodiment, addressing the problem of the lack of effective tools for clearing the airway for choking victims, the above solution involves an anti-choking device. This device includes a pull-out box assembly, a breathing mask, and a connecting tube connecting the pull-out box assembly and the breathing mask. A one-way inlet valve is provided on the lower inner wall of the connecting tube, and at least one one-way outlet valve is provided on the side wall of the connecting tube above the one-way inlet valve. In use, the breathing mask is placed over the user's mouth, so that the mask cavity is connected to the user's airway. The pull-out box assembly reduces the space of the bag cavity, causing internal air to be expelled through the one-way outlet valve, increasing the air pressure inside the bag cavity. Conversely, the pull-out box assembly increases the space of the bag cavity, reducing the air pressure inside the bag cavity, allowing airflow from the airway and the mask cavity to enter the bag cavity through the one-way inlet valve. These two actions are repeated until the foreign object is suctioned out of the airway, achieving an effective first-aid effect.

[0054] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0055] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention.

Claims

1. An anti-asphyxiation device, comprising a pull-out box assembly (1) and a breathing mask (2), wherein the pull-out box assembly (1) includes a bladder (11), and the pull-out box assembly (1) has a bladder cavity (111) that can be repeatedly compressed and inflated within the bladder cavity (111), and the breathing mask (2) forms a mask cavity (21) inside after being fitted to the human face, characterized in that: It also includes a connecting tube (3) that can be detachably inserted into the pull-out box assembly (1) and the breathing mask (2) and connects the bladder cavity (111) and the mask cavity (21); the lower inner side of the connecting tube (3) is provided with a one-way air intake valve (4) that allows the mask cavity (21) to enter the bladder cavity (111), and at least one one-way air outlet valve (5) that allows the bladder cavity (111) to expel air is provided on the side wall of the connecting tube (3) above the one-way air intake valve (4); the connecting tube (3) includes an upper tube (31) and a lower tube (32), the upper tube (31) is inserted into the lower end of the pull-out box assembly (1), the lower tube (32) is inserted into the breathing mask (2), the one-way air intake valve (4) is located on the inner side of the lower tube (32), and the one-way air outlet valve (5) is located on the side wall of the upper tube (31).

2. The anti-suffocation device according to claim 1, characterized in that: The upper tube (31) and the lower tube (32) are integrally formed.

3. The anti-suffocation device according to claim 2, characterized in that: The sidewall of the upper tube (31) extends outward to form at least one convex ring (311), and each convex ring (311) has a through hole (312); the one-way vent valve (5) is disposed in the through hole (312) in the convex ring (311).

4. The anti-suffocation device according to claim 2, characterized in that: The diameter of the lower tube (32) is larger than that of the upper tube (31). A ventilation column (22) communicating with the mask cavity (21) is provided on the upper end surface of the breathing mask (2). The ventilation column (22) is inserted into the lower tube (32) of the connecting tube (3).

5. The anti-suffocation device according to claim 1, characterized in that: The pull-out box assembly (1) also includes a grip (12) and a lower connecting cover (13) connected to the upper and lower ends of the bladder body (11), respectively. The grip (12) and the lower connecting cover (13) close the upper and lower ends of the bladder cavity (111). The lower connecting cover (13) has a flow port (131) communicating with the bladder cavity (111) in the middle. The upper end of the connecting tube (3) is tensioned and set in the flow port (131).

6. The anti-suffocation device according to claim 5, characterized in that: The lower connecting cover (13) has a lower connecting groove (132) on the outer side of the guide port (131). The inner wall of the lower connecting groove (132) is provided with a lower connecting thread (133). The lower end of the bladder (11) is formed with a lower connecting ring (112). The side wall of the lower connecting ring (112) is provided with a first external thread (113) that mates with the lower connecting thread (133). A sealing groove (134) is formed on the outer periphery of the bottom surface of the lower connecting groove (132). A sealing ring (135) is provided in the sealing groove (134).

7. The anti-suffocation device according to claim 5, characterized in that: The grip (12) is formed by splicing two splicing parts. The lower part of the grip (12) forms an upper connecting cover (121), and the upper part forms a handle (122). The handle (122) is configured in an arc shape and forms a grip opening (123) between it and the upper connecting cover (121).

8. The anti-suffocation device according to claim 7, characterized in that: The bottom surface of the upper connecting cover (121) is formed with an upper connecting groove (1211), and the side wall of the upper connecting groove (1211) is provided with an upper connecting thread (1212). The upper end of the bladder (11) is formed with an upper connecting ring (114), and the side wall of the upper connecting ring (114) is provided with a second external thread (115) that mates with the upper connecting thread (1212).

9. The anti-suffocation device according to claim 8, characterized in that: A sealing gasket (1214) is attached to the bottom surface of the upper connecting groove (1211).

10. The anti-suffocation device according to claim 5, characterized in that: The outer edge of the lower connecting cover (13) forms a lower retaining ring (136) on the outside of the bladder (11), and / or the outer edge of the upper connecting cover (121) forms an upper retaining ring (1213) on the outside of the bladder (11); during the compression of the bladder (11), the upper end of the bladder (11) can partially extend into the upper retaining ring (1213) of the upper connecting cover (121) and / or the lower end of the bladder (11) can partially extend into the lower retaining ring (136) of the lower connecting cover (13).