A movable endotracheal tube

Abstract

The application belongs to the technical field of medical appliances, and is especially a tracheal catheter capable of moving forward and backward, comprising a pipe body, three side openings are arranged around the bottom end of the pipe body, three flaps are arranged around the inside of the bottom end of the pipe body, limiting strips are arranged on both sides of the flaps, a pull line is fixedly connected to the middle position of the upper end of the flaps, an inner air bag is fixedly connected to the outer wall around the bottom end of the pipe body, a plurality of upper connecting strips are fixedly connected to the outer wall around the upper end of the inner air bag, a plurality of lower connecting strips are fixedly connected to the outer wall around the bottom end of the inner air bag, and an outer air bag is arranged around the outside of the inner air bag, the application is provided with three side openings capable of being pulled and controlled to open and close at the front end of the pipe body, and the inner and outer air bags are arranged outside the pipe body, and the pipe body and the inner air bag can move forward and backward relative to the outer air bag, so that the side openings at the front end of the pipe body can be better aligned with the breathing port of the upper lung lobe, and the oxygen supply of the lung lobe is facilitated.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically relating to a tracheal tube that can move back and forth. Background Technology

[0002] The endotracheal tubes currently used in clinical practice mainly consist of the following parts: the tube body (made of transparent PVC, flexible, with a side opening on one side of the front end), the connector (located at the top of the tube body for connection to an oxygen concentrator), the cuff (located at the front end of the tube body, not inflated during insertion, but inflated to limit movement of the tube body when the cuff is positioned at the opening of the right upper lung), the inflation tube, and the inflation valve (for inflating the cuff). In addition to the tube opening at the front end, the tube body also has a side opening on one side. The front tube opening is used for oxygen supply to the lower lung lobe, while the side opening is used for oxygen supply to the upper lung lobe. This is because the human body uses three lung lobes—upper, middle, and lower—for ventilation. When a person is not breathing, oxygen needs to be delivered to their lung lobes.

[0003] The endotracheal tubes currently used in clinical practice have the following defects:

[0004] 1. Existing endotracheal tubes generally have only one side opening at the tip. However, due to differences in individual internal structures, this side opening may not be aligned precisely with the upper lobe's breathing opening when the endotracheal tube is inserted. Currently, when encountering this problem, either oxygen is supplied to the lower lobe only through the tube's tip opening, allowing the patient to receive oxygen only through the lower lobe, which can basically maintain vital signs, but the oxygen intake is relatively small and the oxygen supply effect is poor, or the tube is rotated to align the side opening at the tip with the upper lobe's breathing opening. However, existing tubes are relatively flexible and difficult to rotate within the body, making adjustments quite challenging.

[0005] 2. In clinical use, after the cuff is fixed to the opening of the right upper lung, it is found that the side opening at the front end of the tube cannot be aligned with the breathing port of the upper lobe. The reason is that the cuff is directly fixed to the tube, and the length of the cuff to the front opening of the tube is fixed. However, the internal structure of each person's body is different. After the cuff is fixed to the opening of the right upper lung, the side opening at the front end of the tube may still be too far away from the breathing port of the upper lobe. Whether the distance is too long or too short, it is not easy to make the side opening at the front end of the tube align with the breathing port of the upper lobe.

[0006] Therefore, this invention makes further innovative designs based on existing endotracheal tubes. Summary of the Invention

[0007] To address the aforementioned problems in the prior art, this invention provides a movable endotracheal tube. Three side openings are located around the front end of the tube, with baffles further movable inside each opening. Through the coordination of limiting strips and lifting lines, the baffles can be lifted to open the side openings, allowing for oxygen supply to the upper lobe's breathing opening, ensuring adequate oxygenation and improving lung oxygenation efficiency. This design is labor-saving and convenient. Furthermore, an inner air bladder is fixed to the front end of the tube, and an outer air bladder is movably connected to it via several upper and lower connecting strips. The inner air bladder and the tube can move back and forth relative to the outer air bladder to adjust the position of the tube's front end, ensuring better alignment of the side openings with the upper lobe's breathing opening. Once aligned, the inner air bladder is inflated, allowing it to fit tightly against the outer air bladder, thus limiting the tube's movement and preventing further back and forth movement. This design ensures ease of use.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a tracheal tube that can move back and forth, comprising a tube body, three side openings are provided around the bottom end of the tube body, three baffles are provided around the bottom end of the tube body and the baffles are located at the rear end of the side openings, limit strips are provided on both sides of the baffles, the baffles are fixedly connected to the inner wall of the tube body and the baffles are slidably connected to the limit strips, and a lifting line is fixedly connected to the middle position of the upper end of the baffle;

[0009] The upper end of the tube has three guide grooves around its perimeter. The upper outer wall of the tube is fixedly connected to three pull sleeves, which communicate with the guide grooves. A pull block is movably connected inside the front end of the pull sleeve, and the upper end of the lifting line passes through the guide groove and is fixedly connected to the front end of the pull block. The rear end of the pull sleeve has a slot one, and a pull rod is movably connected inside the slot one. The front end of the pull rod is fixedly connected to the rear end of the pull block, and a pull button is fixedly connected to the rear end of the pull rod. The upper end of the pull sleeve has a slot two, and a seat cap is fixedly connected to the upper end of the slot two. A spring is fixedly connected inside the upper end of the seat cap, and a latch is fixedly connected to the bottom end of the spring, which is movably connected to the seat cap.

[0010] An inner air bladder is fixedly connected to the outer wall of the bottom end of the tube. An inflation tube is fixedly connected to the upper right end of the inner air bladder and is fixedly connected to the outer wall of the tube. Several upper connecting strips are fixedly connected to the outer wall of the upper end of the inner air bladder. Several lower connecting strips are fixedly connected to the outer wall of the bottom end of the inner air bladder. An outer air bladder is provided around the outer perimeter of the inner air bladder. The ends of the upper and lower connecting strips that are different from the inner air bladder are fixedly connected to the inner wall of the outer air bladder. An inflation tube is fixedly connected to the upper left end of the outer air bladder and is fixedly connected to the outer wall of the tube.

[0011] Several limiting sleeves are fixedly connected around the inner wall of the tube, and the lifting line passes through the limiting sleeves.

[0012] The inner air bladder has a cylindrical structure, and the outer air bladder has an elliptical structure.

[0013] The upper connecting strip has a "V" shape, and the lower connecting strip has an inverted "V" shape.

[0014] The inner walls on both sides of the guide groove are provided with shaft holes, and a support wheel is provided inside the guide groove. The support wheel has an "H" structure, and the lifting line is in contact with the upper end of the support wheel.

[0015] The upper rear surface of the pull block and the bottom surface of the latch are both beveled.

[0016] As a preferred technical solution of the endotracheal tube that can move back and forth according to the present invention, the baffle is an arc-shaped structure and the limiting strip is an "L"-shaped structure.

[0017] As a preferred embodiment of the present invention, an inflatable endotracheal tube that can move back and forth is provided with an inflation valve fixedly connected to the upper end of the first inflation tube and an inflation valve fixedly connected to the upper end of the second inflation tube.

[0018] As a preferred embodiment of the present invention, the endotracheal tube that can move back and forth is provided with axles fixedly connected to both ends of the support wheel, and the axles are rotatably connected to the shaft holes.

[0019] As a preferred embodiment of the present invention, a movable endotracheal tube is provided with grooves at both the upper and lower ends of the pull button.

[0020] As a preferred embodiment of the present invention, a movable endotracheal tube is provided with a connector at the upper end of the tube body.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] This invention features three side openings around the front end of the tube, with a baffle plate further movable inside each opening. A limiting strip and a lifting line allow the baffle plate to be lifted to open the side openings. During use, once the side openings are in position, the opening closest to the lower lung lobe's breathing opening can be selected for use, while the other two side openings remain closed to align with the upper lung lobe's breathing opening, ensuring adequate oxygen supply and improving lung oxygenation. Compared to existing technologies that require rotating the tube to align a single side opening on one side with the upper lung lobe's breathing opening, this method is more labor-saving and convenient.

[0023] Meanwhile, the three pull sleeves around the upper end of the tube, along with their internal pull blocks, pull rods, and pull buttons, allow for the lifting control of the internal lifting line and baffle from the outside of the tube. This is labor-saving and convenient. Furthermore, the pull sleeve caps, springs, and latches further enable automatic limiting of the pull block when pulled back, preventing the lifting line and baffle from moving downwards after being lifted, thus improving usability.

[0024] This invention features an inner air bladder fixedly attached to the front end of the tube, with an outer air bladder movably connected to it via several upper and lower connecting strips. Before intubation, neither the inner nor outer air bladder is inflated. Once the tube is in place and the outer air bladder is positioned at the opening of the upper lobe, it is inflated for fixation. Because the inner air bladder is not inflated at this time, and the outer and inner air bladders are movably connected via the upper and lower connecting strips, the inner air bladder and the tube can move back and forth relative to the outer air bladder to adjust the position of the tube's front end. This allows the side opening at the tube's front end to be better aligned with the upper lobe's breathing opening. After alignment, the inner air bladder is inflated, allowing it to expand and fit tightly against the outer air bladder, thus limiting the movement of the tube relative to the outer air bladder and preventing further movement. This design makes the tube convenient to use. Attached Figure Description

[0025] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0026] Figure 1 This is a schematic diagram of the structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the connection structure of the tube body, inner air bladder, and outer air bladder of the present invention.

[0028] Figure 3 This is a schematic diagram of the cross-sectional structure of the side opening and baffle connection of the present invention;

[0029] Figure 4 This is a schematic diagram of the cross-sectional structure of the connection between the limiting strip and the baffle of the present invention;

[0030] Figure 5 This is a schematic diagram of the connection structure between the inner and outer airbags of the present invention;

[0031] Figure 6 This is a partial cross-sectional structural diagram of the connection between the inner and outer airbags of the present invention;

[0032] Figure 7 This is a schematic diagram of the upper and lower connecting strips of the present invention;

[0033] Figure 8 This is a schematic diagram of the tube body and pull sleeve connection structure of the present invention;

[0034] Figure 9 This is a schematic diagram of the cross-sectional structure of the tube body and the sleeve connection of the present invention;

[0035] Figure 10 for Figure 9 A magnified structural diagram at point A;

[0036] Figure 11 This is a side cross-sectional view of the tube body and the sleeve connection of the present invention.

[0037] In the diagram: 1. Tube body; 2. Side opening; 3. Limiting strip; 4. Baffle; 5. Lifting line; 6. Limiting sleeve; 7. Inner airbag; 8. Inflation tube one; 9. Inflation valve one; 10. Upper connecting strip; 11. Lower connecting strip; 12. Outer airbag; 13. Inflation tube two; 14. Inflation valve two; 15. Guide groove; 16. Shaft hole; 17. Support wheel; 18. Wheel axle; 19. Pull sleeve; 20. Pull block; 21. Slot one; 22. Pull rod; 23. Pull button; 24. Groove; 25. Slot two; 26. Seat cap; 27. Spring; 28. Locking button; 29. ​​Connector. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0039] Please see Figure 1-11 The present invention provides the following technical solution: a tracheal tube that can move back and forth, including a tube body 1, a connector 29 being snapped onto the upper end of the tube body 1, three side openings 2 being provided around the bottom end of the tube body 1, three baffles 4 being provided around the bottom end of the tube body 1 with the baffles 4 located at the rear end of the side openings 2, the baffles 4 having an arc-shaped structure, and limit strips 3 being provided on both sides of the baffles 4, the limit strips 3 having an "L"-shaped structure, the baffles 4 being fixedly connected to the inner wall of the tube body 1, and the baffles 4 being slidably connected to the limit strips 3, a lifting line 5 being fixedly connected to the middle position of the upper end of the baffles 4, and several... A limiting sleeve 6 is installed, and the lifting line 5 passes through the limiting sleeve 6. The connector 29 is the original structure on the existing endotracheal tube and is retained for connecting the tube body 1 to the external oxygen machine. There are three side openings 2, which are located in different positions. When not in use, they are closed by the baffle 4. When in use, the lifting line 5 is lifted, the baffle 4 moves upward relative to the limiting strip 3, and the side openings 2 are opened. The side openings 2 are used for oxygen supply to the upper lung lobe, while the oxygen supply to the lower lung lobe is achieved by the front end of the tube body 1. The limiting sleeve 6 is used to limit the long section of the lifting line 5 inside the tube body 1 to prevent the three lifting lines 5 from getting tangled together.

[0040] Reference Figure 1 , Figure 8 , Figure 9 , Figure 10 and Figure 11 As shown, furthermore, three guide grooves 15 are provided around the upper end of the tube body 1. Shaft holes 16 are provided on the inner walls of both sides of each guide groove 15. Support wheels 17 are installed inside the guide grooves 15. The support wheels 17 have an "H" structure, and the lifting line 5 contacts the upper end of the support wheel 17. Axles 18 are fixedly connected to both ends of the support wheel 17, and the axles 18 are rotatably connected to the shaft holes 16. Three pull sleeves 19 are fixedly connected to the outer wall of the upper end of the tube body 1, and the pull sleeves 19 are connected to the guide... The groove 15 is connected to the pull sleeve 19. A pull block 20 is movably connected inside the front end of the pull sleeve 19. The upper end of the lifting cable 5 passes through the guide groove 15 and is fixedly connected to the front end of the pull block 20. A slot 21 is opened at the rear end of the pull sleeve 19. A pull rod 22 is movably connected inside the slot 21, and the front end of the pull rod 22 is fixedly connected to the rear end of the pull block 20. A pull button 23 is fixedly connected to the rear end of the pull rod 22. Grooves 24 are opened at both the upper and lower ends of the pull button 23. The upper end of the pull sleeve 19... A second slot 25 is provided, and a seat cap 26 is fixedly connected to the upper end of the second slot 25. The upper end of the inner part of the seat cap 26 is fixedly connected to a spring 27. A latch 28 is fixedly connected to the bottom end of the spring 27 and is movably connected to the seat cap 26. The upper rear surface of the pull block 20 and the bottom surface of the latch 28 are both beveled. The guide groove 15 is used for leading the upper end of the lifting line 5 inside the tube 1 out of the tube 1, and the support wheel 17 is used for supporting the lifting line 5 passing through the guide groove 15. The support is provided, and the rotational engagement between the axle 18 and the shaft hole 16 allows the lifting cable 5 and the support wheel 17 to roll in contact, reducing friction. The groove 24 allows the pull button 23 to be gripped and pulled in an anti-slip manner. The pull button 23 and the pull rod 22 can pull the upper end of the pull block 20 and the lifting cable 5 backward, thereby further moving the baffle 4 upward to open the side opening 2. The elastically movable latch 28 inside the seat cap 26 can further automatically limit the backward pull block 20.

[0041] In this embodiment, the present invention has three side openings 2 around the front end of the tube body 1, and a baffle 4 is further movable inside the side opening 2. With the help of the limiting strip 3 and the lifting line 5, the baffle 4 can be lifted to open the side opening 2. When in use, after the side opening 2 at the front end of the tube body 1 is in place, the side opening 2 can be opened according to which side opening 2 is closest to the lower lobe breathing port. The other two side openings 2 remain closed so as to align with the upper lobe breathing port for oxygen supply, thereby ensuring oxygenation and improving the oxygen supply effect of the lungs. Compared with the prior art, which uses rotation to adjust the tube body 1 to align a single side opening 2 on one side of the front end with the upper lobe breathing port, this method is more labor-saving and convenient.

[0042] Meanwhile, through the combination of three pull sleeves 19 and their inner pull blocks 20, pull rods 22, and pull buttons 23 around the upper end of the tube body 1, the lifting control of the lifting line 5 and baffle 4 inside the tube body 1 can be realized from the outside of the tube body 1, which is labor-saving and convenient. Furthermore, through the further combination of the seat cap 26, spring 27, and latch 28 on the pull sleeve 19, the pull block 20 can be automatically limited when pulled back, which can prevent the lifting line 5 and baffle 4 from moving downward after being lifted, making it even better to use.

[0043] Reference Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 7 As shown, further, an inner air bladder 7 is fixedly connected to the outer wall of the bottom end of the tube body 1. The inner air bladder 7 has a cylindrical structure. An inflation tube 8 is fixedly connected to the upper right end of the inner air bladder 7 and is fixedly connected to the outer wall of the tube body 1. An inflation valve 9 is fixedly connected to the upper end of the inflation tube 8. Several upper connecting strips 10 are fixedly connected to the outer wall of the upper end of the inner air bladder 7. The upper connecting strips 10 have a "V" shaped structure. The outer wall of the bottom end of the inner air bladder 7 is fixedly connected to... Several lower connecting strips 11 are attached, each with an inverted "V" shape. An outer airbag 12 is provided around the outer perimeter of the inner airbag 7. The outer airbag 12 has an elliptical shape, and the ends of the upper connecting strips 10 and lower connecting strips 11, which are different from the inner airbag 7, are fixedly connected to the inner wall of the outer airbag 12. An inflation tube 2 13 is fixedly connected to the upper left side of the outer airbag 12, and the inflation tube 2 13 is fixedly connected to the outer wall of the tube body 1. An inflation valve is fixedly connected to the upper end of the inflation tube 2 13. In section 2.14, the inner airbag 7, after inflation, is cylindrical. In the figure, the inner airbag 7 is in a partially inflated state. The outer airbag 12, after inflation, is elliptical. The inner airbag 7 and the outer airbag 12 are connected by several upper connecting strips 10 and lower connecting strips 11, which not only ensures the connection between the inner airbag 7 and the outer airbag 12, but also allows the inner airbag 7 to move a certain distance back and forth relative to the outer airbag 12 when it is not inflated. Since the inner airbag 7 is fixed to the outer wall of the tube body 1, both the tube body 1 and the inner airbag 7 can move a certain distance back and forth relative to the outer airbag 12 to adjust the position of the tube body 1. After aligning the position, the inner airbag 7 is inflated. The inflated inner airbag 7 can fit tightly with the outer airbag 12, thereby achieving the limitation of the inner airbag 7 and the tube body 1 relative to the outer airbag 12. The inflation tube and inflation valve are used for inflating the airbags. This is a conventional setting of the existing endotracheal tube. The specific details of this existing structure will not be described here.

[0044] In this embodiment, an inner air bladder 7 is fixedly provided on the front end of the tube body 1, and an outer air bladder 12 is movably connected to the inner air bladder 7 by several upper connecting strips 10 and lower connecting strips 11. Before intubation, neither the inner air bladder 7 nor the outer air bladder 12 is inflated. After intubation, when the outer air bladder 12 is located at the opening of the upper lobe, the outer air bladder 12 is inflated for fixation. Since the inner air bladder 7 is not inflated at this time, and the outer air bladder 12 is movably connected to the inner air bladder 7 by several upper connecting strips 10 and lower connecting strips 11, the inner air bladder 7 and the tube body 1 can move back and forth relative to the outer air bladder 12 to adjust the position of the front end of the tube body 1 so that the side opening 2 at the front end of the tube body 1 is better aligned with the breathing opening of the upper lobe. After alignment, the inner air bladder 7 is inflated. The inflated inner air bladder 7 can fit tightly with the outer air bladder 12 to complete the limitation of the inner air bladder 7 and the tube body 1 relative to the outer air bladder 12, thereby preventing the tube body 1 from moving back and forth, making it convenient to use.

[0045] The usage process and working principle of this invention are as follows: When in use, insert the tube 1. After the outer air bladder 12 reaches the opening of the upper lobe, inflate the outer air bladder 12 through the inflation valve 14 and the inflation tube 13. The inner air bladder 7 is not inflated. Since the inner air bladder 7 is not inflated at this time, and the outer air bladder 12 and the inner air bladder 7 are movably connected by several upper connecting strips 10 and lower connecting strips 11, the inner air bladder 7 and the tube 1 can move back and forth relative to the outer air bladder 12 to adjust the position of the front end of the tube 1 so that the side opening 2 at the front end of the tube 1 is better aligned with the breathing opening of the upper lobe. After the side opening 2 at the front end of the tube 1 is aligned with the breathing opening of the upper lobe, inflate the inner air bladder 7 through the inflation valve 9 and the inflation tube 8. The inner air bladder 7 inflates and expands and fits tightly with the outer air bladder 12 to complete the limitation of the inner air bladder 7 and the tube 1 relative to the outer air bladder 12, which can prevent the tube 1 from moving back and forth.

[0046] Then, depending on which side opening 2 is closest to the lower lobe, the side opening 2 is selected for opening and use, while the other two side openings 2 remain closed. During operation, the upper end of the pull block 20 and the lifting cable 5 is pulled backward by the pull button 23 and pull rod 22. The upper end of the lifting cable 5 is supported by the support wheel 17, and the rotational engagement of the wheel axle 18 and the shaft hole 16 ensures that the lifting cable 5 and the support wheel 17 are in rolling contact, reducing friction. The other sections of the lifting cable 5 are limited by several limiting sleeves 6 to prevent the three lifting cables 5 inside the tube body 1 from tangling together. During the backward movement of the pull block 20, when the pull block 20 contacts the locking button 28, the bottom end of the locking button 28... Under the squeezing force of the pull block 20, it can move upward and retract into the seat cap 26, compressing the spring 27. When the pull block 20 moves backward behind the latch 28, the pressure on the bottom of the latch 28 disappears. Under the rebound force of the latch 28, the latch 28 pops out from the seat cap 26 and locks in front of the pull block 20 to limit the backward movement of the pull block 20, thereby limiting the upward lifting line 5 and the baffle 4. This prevents the lifting line 5 and the baffle 4 from moving downward after being lifted. By lifting the baffle 4 with the lifting line 5, the baffle 4 can move upward relative to the limiting strip 3, thereby exposing the side opening 2. Then, the upper connector 29 of the tube body 1 is further connected to the external oxygen supply machine for subsequent oxygen supply.

[0047] In addition, all content not described in detail in this embodiment falls within the scope of existing technology and common knowledge.

[0048] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A tracheal tube that can move back and forth, comprising a tube body (1), characterized in that: The tube body (1) has three side openings (2) around its bottom end. The tube body (1) has three baffles (4) around its bottom end, and the baffles (4) are located at the rear end of the side openings (2). The baffles (4) have limit strips (3) on both sides. The baffles (4) are fixedly connected to the inner wall of the tube body (1), and the baffles (4) are slidably connected to the limit strips (3). A lifting line (5) is fixedly connected to the middle of the upper end of the baffles (4). The upper end of the tube (1) has three guide grooves (15) around its perimeter. Three pull sleeves (19) are fixedly connected to the outer wall of the upper end of the tube (1), and the pull sleeves (19) communicate with the guide grooves (15). A pull block (20) is movably connected inside the front end of each pull sleeve (19), and the upper end of the lifting line (5) passes through the guide groove (15) and is fixedly connected to the front end of the pull block (20). A slot (21) is opened at the rear end of the pull sleeve (19), and a slot (21) is movably connected inside the slot (21). A pull rod (22) is provided, and the front end of the pull rod (22) is fixedly connected to the rear end of the pull block (20). A pull button (23) is fixedly connected to the rear end of the pull rod (22). A slot two (25) is provided at the upper end of the pull sleeve (19). A seat cap (26) is fixedly connected to the upper end of the slot two (25). The upper end of the seat cap (26) is fixedly connected to a spring (27). A latch (28) is fixedly connected to the bottom end of the spring (27), and the latch (28) is movably connected to the seat cap (26). An inner airbag (7) is fixedly connected to the outer wall of the bottom end of the tube (1). An inflation tube (8) is fixedly connected to the upper right side of the inner airbag (7) and the inflation tube (8) is fixedly connected to the outer wall of the tube (1). Several upper connecting strips (10) are fixedly connected to the outer wall of the upper end of the inner airbag (7). Several lower connecting strips (11) are fixedly connected to the outer wall of the bottom end of the inner airbag (7). An outer airbag (12) is provided around the outer perimeter of the inner airbag (7). The ends of the upper connecting strips (10) and lower connecting strips (11) that are different from the inner airbag (7) are fixedly connected to the inner wall of the outer airbag (12). An inflation tube (13) is fixedly connected to the upper left side of the outer airbag (12) and the inflation tube (13) is fixedly connected to the outer wall of the tube (1). The inner wall of the tube (1) is fixedly connected with several limiting sleeves (6), and the lifting line (5) passes through the limiting sleeves (6). The inner air bladder (7) has a cylindrical structure, and the outer air bladder (12) has an elliptical structure; The upper connecting strip (10) has a "V" shaped structure, and the lower connecting strip (11) has an inverted "V" shaped structure; The inner walls on both sides of the guide groove (15) are provided with shaft holes (16), and a support wheel (17) is provided inside the guide groove (15). The support wheel (17) has an "H" structure, and the lifting line (5) is in contact with the upper end of the support wheel (17). The upper rear surface of the pull block (20) and the bottom surface of the latch (28) are both inclined surfaces.

2. The endotracheal tube that can move back and forth according to claim 1, characterized in that: The baffle (4) has an arc-shaped structure, and the limiting strip (3) has an "L"-shaped structure.

3. The endotracheal tube that can move back and forth according to claim 1, characterized in that: The upper end of the first inflation tube (8) is fixedly connected to the first inflation valve (9), and the upper end of the second inflation tube (13) is fixedly connected to the second inflation valve (14).

4. The endotracheal tube that can move back and forth according to claim 1, characterized in that: Both ends of the support wheel (17) are fixedly connected to axles (18), and the axles (18) are rotatably connected to the shaft hole (16).

5. A movable endotracheal tube according to claim 1, characterized in that: The pull button (23) has grooves (24) at both the top and bottom ends.

6. The endotracheal tube that can move back and forth according to claim 1, characterized in that: The upper end of the tube (1) is fitted with a connector (29).

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