Tracheal catheter capable of moving back and forth

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to a tracheal catheter capable of moving back and forth, which comprises a catheter body, three side openings are formed in the periphery of the bottom end of the catheter body, three separation blades are arranged on the periphery of the interior of the bottom end of the catheter body, and limiting strips are arranged on the two sides of each separation blade. The middle position of the upper end of the blocking piece is fixedly connected with a lifting line. An inner air bag is fixedly connected to the periphery of the outer wall of the bottom end of the tube body, a plurality of upper connecting strips are fixedly connected to the periphery of the outer wall of the upper end of the inner air bag, a plurality of lower connecting strips are fixedly connected to the periphery of the outer wall of the bottom end of the inner air bag, and an outer air bag is arranged on the periphery of the outer portion of the inner air bag. The front end of the catheter body is provided with the three side holes which can be lifted to control opening and closing, the inner air bag and the outer air bag are arranged outside the catheter body, and the catheter body and the inner air bag can move front and back relative to the outer air bag, so that the side holes in the front end of the catheter body can be better aligned to the upper lung lobe breathing opening, and oxygen supply of the lung lobe is facilitated.

Description

Technical Field

[0001] The invention belongs to the technical field of medical appliances, and in particular relates to a tracheal tube which can move forwards and backwards. Background Art

[0002] The endotracheal tube currently used in clinical practice is mainly composed of the following parts: a tube body (made of transparent PVC, bendable, and with a side opening on one side of the front end of the tube body), a joint (located at the upper end of the tube body for connecting to an oxygen machine), an air bag (located at the front end of the tube body, not inflated during intubation, and after the intubation is in place, when the air bag is located at the opening of the right upper lung, inflation is limited to prevent the tube body from moving forward and backward), an inflation tube and an inflation valve (used for inflating the air bag). Among them, in addition to the front end tube mouth of the tube body, the front end of the tube body is also provided with a side opening on one side of the front end. The front end tube mouth is used for oxygen supply to the lower lung lobe, and the side opening is for oxygen supply to the upper lung lobe. Because the human body has a total of three lung lobes for ventilation, namely the upper, middle and lower lung lobes, when a person is not breathing, oxygen needs to be transported to their lung lobes.

[0003] The existing endotracheal tubes used in clinical practice have the following defects when in use:

[0004] 1. The front end of the existing tracheal tube generally has only one side opening, but the internal structure of each person's body is different. When inserting the tracheal tube, the side opening at the front end may not be exactly aligned with the respiratory opening of the upper lung lobe. At present, when encountering this problem, either the oxygen supply to the lower lung lobe is only carried out through the tube opening at the front end of the tube body, and the patient is only oxygenated through the lower lung lobe. Although the vital signs can be basically maintained, the oxygen intake is relatively small and the oxygen supply effect is not good. Another method is to rotate the tube body to align the side opening at the front end of the tube body with the respiratory opening of the upper lung lobe, but the existing tube bodies are relatively soft, and it is not easy to rotate in the human body, and it is difficult to adjust.

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

[0006] Therefore, the present invention makes a further innovative design based on the existing tracheal tube. Summary of the invention

[0007] In order to solve the above problems existing in the prior art, the present invention provides an endotracheal tube that can be moved forward and backward, and three side openings are provided around the front end of the tube body, and a baffle is further movably provided on the inner side of the side opening. At the same time, through the arrangement and coordination of the limit strip and the lifting line, the baffle can be lifted up to open the side opening so as to align with the respiratory opening of the upper lung lobe for oxygen supply, so as to ensure the oxygen flow rate and improve the oxygen supply effect of the lung lobe, which is labor-saving and convenient. In addition, an inner air bag is fixedly provided outside the front end of the tube body, and an outer air bag is movably connected to the outside of the inner air bag through a plurality of upper connecting strips and lower connecting strips. The inner air bag and the tube body can further move forward and backward relative to the outer air bag to adjust the position of the front end of the tube body so as to better align the side opening at the front end of the tube body with the respiratory opening of the upper lung lobe. After alignment, air is inflated into the inner air bag. The inner air bag is inflated and expanded to fit tightly with the outer air bag to complete the limitation of the inner air bag and the tube body relative to the outer air bag to prevent the tube body from moving forward and backward, which is convenient to use.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a tracheal tube that can move forward and backward, comprising a tube body, three side openings are opened around the bottom end of the tube body, three baffles are arranged around the inside of the bottom end of the tube body and the baffles are located at the rear ends of the side openings, both sides of the baffles are provided with limit strips, 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 wire is fixedly connected to the middle position of the upper end of the baffle;

[0009] The upper end of the tube body is provided with three guide grooves around, the outer wall of the upper end of the tube body is fixedly connected with three pull sleeves and the pull sleeves are communicated with the guide grooves, the front end of the pull sleeve is movably connected with a pull block, and the upper end of the pulling 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 is provided with a slot 1, the slot 1 is movably connected with a pull rod, and the front end of the pull rod is fixedly connected to the rear end of the pull block, the rear end of the pull rod is fixedly connected with a pull button, the upper end of the pull sleeve is provided with a slot 2, the upper end of the slot 2 is fixedly connected with a seat cap, the inner upper end of the seat cap is fixedly connected to a spring, the bottom end of the spring is fixedly connected with a clamping button and the clamping button is movably connected to the seat cap;

[0010] An inner airbag is fixedly connected to the outer wall of the bottom end of the tube body, an inflation tube 1 is fixedly connected to the upper right end of the inner airbag and the inflation tube 1 is fixedly connected to the outer wall of the tube body, a plurality of upper connecting strips are fixedly connected to the outer wall of the upper end of the inner airbag, a plurality of lower connecting strips are fixedly connected to the outer wall of the bottom end of the inner airbag, an outer airbag is arranged around the outside of the inner airbag, and the ends of the upper connecting strips and the lower connecting strips that are different from the inner airbag are fixedly connected to the inner wall of the outer airbag, and an inflation tube 2 is fixedly connected to the upper left end of the outer airbag and the inflation tube 2 is fixedly connected to the outer wall of the tube body.

[0011] As a preferred technical solution of the endotracheal tube that can move forward and backward according to the present invention, the blocking piece is an arc-shaped structure, and the limiting strip is an "L"-shaped structure.

[0012] As a preferred technical solution of the tracheal tube that can move forward and backward according to the present invention, a plurality of limiting sleeves are fixedly connected to the inner wall of the tube body, and the pulling wire passes through the limiting sleeves.

[0013] As a preferred technical solution of a tracheal tube that can move forward and backward according to the present invention, axial holes are provided on the inner walls on both sides of the guide groove, a support wheel is arranged inside the guide groove, the support wheel is an "H" structure, and the pulling wire is in contact with the upper end of the support wheel, both ends of the support wheel are fixedly connected with wheel axles, and the wheel axles are rotatably connected to the axial holes.

[0014] As a preferred technical solution of a tracheal tube that can move forward and backward according to the present invention, grooves are provided at both the upper and lower ends of the pull button.

[0015] As a preferred technical solution of the endotracheal tube that can move forward and backward according to the present invention, the upper surface of the rear end of the pull block and the bottom end surface of the button are both inclined surfaces.

[0016] As a preferred technical solution of the endotracheal tube that can move forward and backward according to the present invention, the inner air bag is a cylindrical structure, and the outer air bag is an elliptical structure.

[0017] As a preferred technical solution of the endotracheal tube that can move forward and backward according to the present invention, the upper connecting bar is a "V"-shaped structure, and the lower connecting bar is an inverted "V"-shaped structure.

[0018] As a preferred technical solution of the endotracheal tube that can move forward and backward of the present invention, the upper end of the inflation tube 1 is fixedly connected to the inflation valve 1, and the upper end of the inflation tube 2 is fixedly connected to the inflation valve 2.

[0019] As a preferred technical solution of the endotracheal tube that can move forward and backward according to the present invention, the upper end of the tube body is snap-connected with a joint.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention is provided with three side openings around the front end of the tube body, and a baffle is further movably provided inside the side opening. At the same time, the baffle can be lifted up to open the side opening through the arrangement and coordination of the limit strip and the lifting line. When in use, after the side opening of the front end of the tube body is in place, which side opening can be opened for use according to which side opening is closest to the respiratory port of the lower lung lobe, while the other two side openings remain closed so as to align with the respiratory port of the upper lung lobe for oxygen supply, so as to ensure the oxygen flow, improve the oxygen supply effect of the lung lobe, and compared with the method of rotating and adjusting the tube body in the prior art to align a single side opening on one side of the front end with the respiratory port of the upper lung lobe, it is more labor-saving and convenient;

[0022] At the same time, through the three pulling sleeves arranged around the upper end of the tube body and the arrangement and coordination of the inner pulling blocks, pulling rods and pulling buttons, the pulling control of the pulling wire and the baffle inside the tube body can be achieved from the outside of the tube body, which is labor-saving and convenient. Moreover, through the further arrangement and coordination of the seat cap, spring and card button on the pulling sleeve, the rear pulling block can be automatically limited, which can prevent the pulling wire and the baffle from moving downward after lifting, and is better to use.

[0023] 2. The present invention has an inner airbag fixedly provided outside the front end of the tube body, and an outer airbag is movably connected to the outside of the inner airbag through a plurality of upper connecting bars and a lower connecting bar. Before intubation, neither the inner airbag nor the outer airbag is inflated. After the intubation is in place, when the outer airbag is located at the opening of the upper lobe, the outer airbag is inflated to fix it. At this time, the inner airbag is not inflated, and the outer airbag is movably connected to the inner airbag through a plurality of upper connecting bars and a lower connecting bar, so that the inner airbag and the tube body can further move forward and backward relative to the outer airbag to adjust the position of the front end of the tube body, so that the side opening at the front end of the tube body can be better aligned with the respiratory opening of the upper lobe. After alignment, the inner airbag is inflated again. The inner airbag is inflated and expanded to fit tightly with the outer airbag to complete the limitation of the inner airbag and the tube body relative to the outer airbag to prevent the tube body from moving forward and backward, which is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0025] Figure 1 It is a structural schematic diagram of the present invention;

[0026] Figure 2 It is a schematic diagram of the connection structure of the tube body, the inner airbag and the outer airbag of the present invention;

[0027] Figure 3 It is a schematic diagram of the cross-sectional structure of the side opening and the baffle connection of the present invention;

[0028] Figure 4 It is a schematic diagram of the cross-sectional structure of the connection between the limit strip and the baffle of the present invention;

[0029] Figure 5 It is a schematic diagram of the connection structure between the inner airbag and the outer airbag of the present invention;

[0030] Figure 6 It is a schematic diagram of a partial cross-sectional structure of the connection between the inner airbag and the outer airbag of the present invention;

[0031] Figure 7 It is a schematic diagram of the upper connecting bar and the lower connecting bar structure of the present invention;

[0032] Figure 8 It is a schematic diagram of the pipe body and pull sleeve connection structure of the present invention;

[0033] Fig. 9 It is a schematic diagram of the cross-sectional structure of the connection between the pipe body and the pull sleeve of the present invention;

[0034] Fig.10 for Fig. 9 A schematic diagram of the enlarged structure at point A;

[0035] Fig.11 It is a schematic diagram of the side cross-sectional structure of the connection between the pipe body and the pull sleeve of the present invention.

[0036] In the figure: 1. tube body; 2. side opening; 3. limit strip; 4. baffle; 5. pull line; 6. limit sleeve; 7. inner air bag; 8. inflation tube one; 9. inflation valve one; 10. upper connecting strip; 11. lower connecting strip; 12. outer air bag; 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. clamp button; 29. ​​connector. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Example

[0039] See also Figure 1-11The present invention provides the following technical solutions: a tracheal tube that can move forward and backward, comprising a tube body 1, a joint 29 is snap-connected at the upper end of the tube body 1, three side openings 2 are opened around the bottom end of the tube body 1, three baffles 4 are arranged around the bottom end of the tube body 1, and the baffles 4 are located at the rear end of the side openings 2, the baffles 4 are arc-shaped structures, and both sides of the baffles 4 are provided with limit strips 3, the limit strips 3 are "L"-shaped structures, 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 position of the upper end of the baffle 4, and the inner wall of the tube body 1 is fixedly connected to the inner wall of the tube body 1. There are three limiting sleeves 6, and the lifting wire 5 passes through the limiting sleeve 6, wherein the joint 29 is the original structure of the existing tracheal tube, and the design is retained, which is used to connect the tube body 1 with the external oxygen machine. The side openings 2 are provided at three places, and are opened at different positions. When not in use, they are blocked and closed by the baffle 4. When in use, the lifting wire 5 is lifted, and the baffle 4 moves up relative to the limiting strip 3, and the side opening 2 is opened. The side opening 2 is used for oxygen supply to the upper lobe, while the oxygen supply to the lower lobe is realized by the front end pipe mouth of the tube body 1. The limiting sleeve 6 is used to limit the lifting wire 5 of the long section in the tube body 1 to prevent the three lifting wires 5 from being entangled together;

[0040] Reference Figure 1 , Figure 8 , Fig. 9 , Fig.10 and Fig.11As shown, further, three guide grooves 15 are opened around the upper end of the tube body 1, and shaft holes 16 are opened on the inner walls of both sides of the guide groove 15. A support wheel 17 is arranged inside the guide groove 15. The support wheel 17 is an "H" structure, and the pulling line 5 is in contact with the upper end of the support wheel 17. Both ends of the support wheel 17 are fixedly connected with a wheel axle 18, and the wheel axle 18 is rotatably connected to the shaft hole 16. The outer wall of the upper end of the tube body 1 is fixedly connected with three pull sleeves 19, and the pull sleeve 19 is connected to the guide groove 15. The groove 15 is connected, the front end of the pull sleeve 19 is movably connected to the pull block 20, and the upper end of the pulling wire 5 passes through the guide groove 15 and is fixedly connected to the front end of the pull block 20. The rear end of the pull sleeve 19 is provided with a slot 21, and the slot 21 is movably connected to the pull rod 22, and the front end of the pull rod 22 is fixedly connected to the rear end of the pull block 20. The rear end of the pull rod 22 is fixedly connected to a pull button 23, and the upper and lower ends of the pull button 23 are provided with grooves 24. The upper end of the pull sleeve 19 A second slot 25 is provided, the upper end of the second slot 25 is fixedly connected to a seat cap 26, the inner upper end of the seat cap 26 is fixedly connected to a spring 27, the bottom end of the spring 27 is fixedly connected to a button 28, and the button 28 is movably connected to the seat cap 26. The upper surface of the rear end of the pull block 20 and the bottom end surface of the button 28 are both inclined surfaces, wherein the guide groove 15 is used to lead the upper end of the lifting wire 5 in the tube body 1 to the outside of the tube body 1, and the support wheel 17 is used to support the lifting wire 5 passing through the guide groove 15. The pull block 20 and the upper end of the pulling wire 5 can be pulled backwards through the pull button 23 and the pull rod 22, thereby further driving the baffle 4 to move upward to open the side opening 2, and the elastically movable card button 28 in the seat cap 26 can further limit the backward pulled block 20 automatically.

[0041] In this embodiment, the present invention is provided with three side openings 2 around the front end of the tube body 1, and a baffle 4 is further movably provided inside the side opening 2. At the same time, through the arrangement and cooperation of the limit strip 3 and the lifting line 5, the baffle 4 can be lifted to open the side opening 2. When in use, when the side opening 2 at the front end of the tube body 1 is in place, which side opening 2 can be opened for use according to which side opening 2 is closest to the respiratory port of the lower lobe, while the other two side openings 2 remain in a closed state, so as to align with the respiratory port of the upper lobe for oxygen supply, so as to ensure the oxygen flow, and improve the oxygen supply effect of the lung lobe. Compared with the method of rotating and adjusting the tube body 1 in the prior art to align the single side opening 2 on the front end side with the respiratory port of the upper lobe, it is more labor-saving and convenient.

[0042] At the same time, through the arrangement and coordination of the three pull sleeves 19 and the inner pull block 20, the pull rod 22 and the pull button 23 arranged around the upper end of the tube body 1, the pulling control of the pulling wire 5 and the baffle 4 inside the tube body 1 can be realized from the outside of the tube body 1, which is labor-saving and convenient, and through the further arrangement and coordination of the seat cap 26, the spring 27 and the card button 28 on the pull sleeve 19, the rear-pulled pull block 20 can be automatically limited, which can prevent the pulling wire 5 and the baffle 4 from moving downward after being lifted, and is better to use.

[0043] Reference Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 7 As shown, further, the outer wall of the bottom end of the tube body 1 is fixedly connected with an inner air bag 7, the inner air bag 7 is a cylindrical structure, the upper right end of the inner air bag 7 is fixedly connected with an inflation tube 8, and the inflation tube 8 is fixedly connected to the outer wall of the tube body 1, and the upper end of the inflation tube 8 is fixedly connected with an inflation valve 9, and the outer wall of the upper end of the inner air bag 7 is fixedly connected with a plurality of upper connecting strips 10, and the upper connecting strips 10 are a "V"-shaped structure. There are several lower connecting strips 11, and the lower connecting strips 11 are in an inverted "V" shaped structure. An outer air bag 12 is arranged around the outside of the inner air bag 7. The outer air bag 12 is an elliptical structure, and the upper connecting strip 10 and the lower connecting strip 11 are different from the inner air bag 7. The end is fixedly connected to the inner wall of the outer air bag 12, and the upper end of the left side of the outer air bag 12 is fixedly connected to the second inflation tube 13, and the second inflation tube 13 is fixedly connected to the outer wall of the tube body 1, and the upper end of the second inflation tube 13 is fixedly connected to the inflation valve 214, wherein the inner airbag 7 is cylindrical after being inflated, and the inner airbag 7 is in an incompletely inflated state in the figure, and the outer airbag 12 is elliptical after being inflated, and the inner airbag 7 is connected to the outer airbag 12 by a plurality of upper connecting strips 10 and a lower connecting strip 11, which not only ensures the connection between the inner airbag 7 and the outer airbag 12, but also enables the inner airbag 7 in the uninflated state to move a certain distance forward and backward relative to the outer airbag 12, and because the inner airbag 7 is fixed on the outer wall of the tube body 1, the tube body 1 and the inner airbag 7 can both move a certain distance forward and backward relative to the outer airbag 12, so as to adjust the position of the tube body 1, and after the alignment position is reached, the inner airbag 7 is inflated again, and the inner airbag 7 can be inflated to fit closely with the outer airbag 12, thereby realizing the limiting of the inner airbag 7 and the tube body 1 relative to the outer airbag 12, and the inflation tube and the inflation valve are used for the inflation of the airbag, which is a conventional setting of the existing endotracheal catheter, and the existing structural parts will not be described in detail one by one here.

[0044] In the present embodiment, the present invention has an inner airbag 7 fixedly provided outside the front end of the tube body 1, and an outer airbag 12 is movably connected to the outside of the inner airbag 7 through a plurality of upper connecting strips 10 and a lower connecting strip 11. Before intubation, neither the inner airbag 7 nor the outer airbag 12 is inflated. After the intubation is in place, when the outer airbag 12 is located at the opening of the upper lobe, the outer airbag 12 is inflated to fix it. At this time, the inner airbag 7 is not inflated, and the outer airbag 12 is movably connected to the inner airbag 7 through a plurality of upper connecting strips 10 and a lower connecting strip 11, so that the inner airbag 7 and the tube body 1 can further move forward and backward relative to the outer airbag 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 can be better aligned with the respiratory opening of the upper lobe. After alignment, the inner airbag 7 is inflated again. The inner airbag 7 is inflated and expanded to fit tightly with the outer airbag 12, so as to complete the limitation of the inner airbag 7 and the tube body 1 relative to the outer airbag 12 to prevent the tube body 1 from moving forward and backward, which is convenient to use.

[0045] The use process and working principle of the present invention are as follows: when in use, the tube body 1 is inserted, and after the outer airbag 12 reaches the opening of the upper lobe, the outer airbag 12 is inflated by the second inflation valve 14 and the second inflation tube 13, and the inner airbag 7 is not inflated. At this time, the inner airbag 7 is not inflated, and the outer airbag 12 is movably connected to the inner airbag 7 by a plurality of upper connecting strips 10 and a lower connecting strip 11, so that the inner airbag 7 and the tube body 1 can further move forward and backward relative to the outer airbag 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 respiratory opening of the upper lobe. After the side opening 2 at the front end of the tube body 1 is aligned with the respiratory opening of the upper lobe, the inner airbag 7 is inflated by the first inflation valve 9 and the first inflation tube 8. The inner airbag 7 is inflated and expands to fit tightly with the outer airbag 12 to complete the limitation of the inner airbag 7 and the tube body 1 relative to the outer airbag 12, which can prevent the tube body 1 from moving forward and backward.

[0046] Afterwards, which side opening 2 is opened for use according to which side opening 2 is closest to the lower lung lobe, while the other two side openings 2 remain closed. During the specific operation, the pull block 20 and the upper end of the lifting wire 5 are pulled backward by the pull button 23 and the pull rod 22. The upper end of the lifting wire 5 is supported by the support wheel 17, and the wheel axle 18 and the shaft hole 16 are rotated together to make the lifting wire 5 and the support wheel 17 in rolling contact, which can reduce friction, and the other sections of the lifting wire 5 are limited by a number of limit sleeves 6 to prevent the three lifting wires 5 in the tube body 1 from being entangled together. When the pull block 20 is moving backward, when the pull block 20 contacts the clamping button 28, the bottom end of the clamping button 28 Under the squeezing force of the pull block 20, it can move up and retract into the seat cap 26, and compress the spring 27. When the pull block 20 moves back to the rear of the card button 28, the pressure on the bottom end of the card button 28 disappears. Under the rebound force of the card button 28, the card button 28 pops out from the seat cap 26 by itself and is stuck in front of the pull block 20 to limit the backward moving pull block 20, thereby limiting the lifted pull line 5 and the baffle 4, and preventing the lifted pull line 5 and the baffle 4 from moving downward. By lifting the pull line 5 and pulling the baffle 4, the baffle 4 can move upward relative to the limit strip 3, thereby exposing the side opening 2, and then the joint 29 on the tube body 1 is further connected to the external oxygen supply machine for subsequent oxygen supply.

[0047] In addition, the contents not described in detail in this embodiment are all within the scope of prior art and common knowledge.

[0048] Finally, it should be noted that the above are only 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 aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A tracheal tube that can move forward and backward, comprising a tube body (1), characterized in that: The bottom end of the tube body (1) is provided with three side openings (2) around it, the bottom end of the tube body (1) is provided with three baffles (4) around it, and the baffles (4) are located at the rear ends of the side openings (2), both sides of the baffles (4) are provided with limit strips (3), 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), and the middle position of the upper end of the baffle (4) is fixedly connected to a lifting line (5); The upper end of the tube body (1) is provided with three guide grooves (15) around it, the outer wall of the upper end of the tube body (1) is fixedly connected with three pull sleeves (19) and the pull sleeves (19) are communicated with the guide grooves (15), the front end of the pull sleeve (19) is internally movably connected with a pull block (20), and the upper end of the pulling wire (5) passes through the guide groove (15) and is fixedly connected with the front end of the pull block (20), the rear end of the pull sleeve (19) is provided with a slot (21), and the slot (21) is internally movably connected with A pull rod (22), wherein the front end of the pull rod (22) is fixedly connected to the rear end of the pull block (20), the rear end of the pull rod (22) is fixedly connected to a pull button (23), the upper end of the pull sleeve (19) is provided with a second slot (25), the upper end of the second slot (25) is fixedly connected to a seat cap (26), the inner upper end of the seat cap (26) is fixedly connected to a spring (27), the bottom end of the spring (27) is fixedly connected to a clamping button (28), and the clamping button (28) is movably connected to the seat cap (26); The outer wall of the bottom end of the tube body (1) is fixedly connected to an inner air bag (7), the upper right end of the inner air bag (7) is fixedly connected to an inflation tube (8), and the inflation tube (8) is fixedly connected to the outer wall of the tube body (1), the upper outer wall of the inner air bag (7) is fixedly connected to a plurality of upper connecting strips (10), the outer wall of the bottom end of the inner air bag (7) is fixedly connected to a plurality of lower connecting strips (11), an outer air bag (12) is arranged around the outside of the inner air bag (7), and the ends of the upper connecting strips (10) and the lower connecting strips (11) different from the inner air bag (7) are fixedly connected to the inner wall of the outer air bag (12), and the upper left end of the outer air bag (12) is fixedly connected to an inflation tube (13), and the inflation tube (13) is fixedly connected to the outer wall of the tube body (1).

2. The endotracheal tube that can move forward and backward according to claim 1, characterized in that: The blocking piece (4) is an arc-shaped structure, and the limiting strip (3) is an "L"-shaped structure.

3. The endotracheal tube that can move forward and backward according to claim 1, characterized in that: A plurality of limiting sleeves (6) are fixedly connected around the inner wall of the tube body (1), and the pulling wire (5) passes through the limiting sleeves (6).

4. The endotracheal tube that can move forward and backward according to claim 1, characterized in that: The inner walls on both sides of the guide groove (15) are provided with axial holes (16), and a support wheel (17) is arranged inside the guide groove (15). The support wheel (17) is an "H" structure, and the lifting wire (5) is in contact with the upper end of the support wheel (17). Both ends of the support wheel (17) are fixedly connected with a wheel axle (18), and the wheel axle (18) is rotatably connected to the axial hole (16).

5. The endotracheal tube that can move forward and backward according to claim 1, characterized in that: Grooves (24) are provided at both the upper and lower ends of the pull button (23).

6. The endotracheal tube that can move forward and backward according to claim 1, characterized in that: The rear end upper surface of the pull block (20) and the bottom end surface of the button (28) are both inclined surfaces.

7. The endotracheal tube that can move forward and backward according to claim 1, characterized in that: The inner airbag (7) is a cylindrical structure, and the outer airbag (12) is an elliptical structure.

8. The endotracheal tube that can move forward and backward according to claim 1, characterized in that: The upper connecting bar (10) is a "V"-shaped structure, and the lower connecting bar (11) is an inverted "V"-shaped structure.

9. The endotracheal tube that can move forward and backward according to claim 1, characterized in that: The upper end of the inflation tube 1 (8) is fixedly connected to the inflation valve 1 (9), and the upper end of the inflation tube 2 (13) is fixedly connected to the inflation valve 2 (14).

10. The endotracheal tube that can move forward and backward according to claim 1, characterized in that: The upper end of the tube body (1) is snap-connected with a joint (29).

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