Tracheal catheter, trachea cannula and endoscope

Abstract

The invention discloses a tracheal catheter, a trachea cannula and an endoscope, and belongs to the technical field of medical instruments. The tracheal catheter comprises a catheter body and a traction structure, the catheter body comprises a near-end catheter section, a bent section and a far-end catheter section which are arranged from the near end to the far end of the catheter body, and the bent section is arranged close to the far-end end face of the catheter body relative to the near-end end face of the catheter body; the far end of the traction structure is connected with the bent section, the near end of the traction structure extends towards the near end of the tube body, and the traction structure is configured to be capable of extruding part of the tube wall of the bent section under traction of an operator, so that the bent section is bent towards the side where the extruded part of the tube wall is located, and the far-end tube section rotates relative to the near-end tube section. The traction structure is matched with the bending section, the tube body is driven to start bending from the position of the bending section, the size of the far end of the tube body cannot be increased, and normal insertion and use of the tube body are facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular, to a tracheal catheter, a tracheal intubation tube, and an endoscope. Background Art

[0002] In the prior art, during the process of inserting a tracheal intubation tube into the human airway, it is necessary to appropriately bend the tracheal intubation tube to adapt to the curvature of the human airway.

[0003] In the related art, some tracheal intubation tubes directly adopt the structure of the endoscope snake bone. A traction member is connected to the snake bone part, and the tracheal intubation tube is controlled to bend by pulling the traction member. By using the bent tracheal tube, the tracheal intubation tube is smoothly inserted into the airway by avoiding the surrounding tissues and the glottis. However, this intubation structure is complex, costly, and the wall thickness of the distal snake bone part increases; in addition, during the process of advancing after the intubation tube enters the airway, the snake bone part is easily bent by the compression of the surrounding tissues and cannot maintain the stability of the overall shape, resulting in poor advancement effect; and the snake bone part starts to bend from its distal position. During the bending process of the snake bone part, the overall size of the distal end of the intubation tube will increase excessively, affecting the advancement effect. Summary of the Invention

[0004] The purpose of the present application is to provide a tracheal catheter, a tracheal intubation tube, and an endoscope to solve the above technical problems existing in the prior art.

[0005] The present application is implemented as follows: In a first aspect, an embodiment of the present application provides a tracheal catheter, including a tube body and a pulling structure. The tube body includes a proximal tube segment, a bending segment, and a distal tube segment arranged from its proximal end to its distal end. The bending segment is disposed closer to the distal end face of the tube body than the proximal end face of the tube body; the distal end of the pulling structure is connected to the bending segment, and the proximal end of the pulling structure extends towards the proximal end of the tube body. The pulling structure is configured to be able to squeeze a part of the tube wall of the bending segment under the pulling of an operator, so that the bending segment bends towards the side where the squeezed part of the tube wall is located, so that the distal tube segment rotates relative to the proximal tube segment.

[0006] In a second aspect, an embodiment of the present application provides a tracheal intubation tube, including the tracheal catheter provided in the first aspect embodiment.

[0007] In a third aspect, an embodiment of the present application provides an endoscope, including the tracheal catheter provided in the first aspect embodiment, and further including a camera module, and the camera module is installed at the distal position of the tube body.

[0008] The technical solution provided by the present application can achieve the following beneficial effects: In this application, by providing a pulling structure on the outer wall surface of the tube body, the pulling structure is used to drive the bending section to bend, so that the distal tube section of the tube body bends relative to its proximal tube section. The tube body starts to bend from the position of the bending section, which will not cause an increase in the size of the distal end of the tube body and is beneficial to the normal insertion and use of the tube body. Moreover, in this application, an additional structure is directly provided on the tube body, and the tube body can maintain its existing structure. When the bending of the tube body is not required, the pulling structure can be released, which will not affect the use of the tube body. When the bending of the tube body is required, the pulling structure can be pulled to bend the tube body, and the use is convenient. Brief Description of the Drawings

[0009] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0010] Figure 1 is a schematic diagram of the overall structure of the tracheal catheter provided by some embodiments of the present application Figure 1 ; Figure 2 is a schematic diagram of the overall structure of the tracheal catheter provided by some embodiments of the present application Figure 2 ; Figure 3 is a schematic diagram of the overall structure of the tracheal catheter provided by some embodiments of the present application Figure 3 ; Figure 4 is a cross-sectional view of the tracheal catheter provided by some embodiments of the present application; Figure 5 is about the present application Figure 4 detail at A Figure 1 ; Figure 6 is about the present application Figure 4 detail at A Figure 2 ; Figure 7 is a schematic diagram of the overall structure of the tube body provided by some embodiments of the present application; Figure 8 is about the present application Figure 7 detail view at B; Figure 9 is a schematic diagram of the pulling structure provided by some embodiments of the present application.

[0011] In the figure: 100 - tube body, 110 - proximal tube section, 120 - bending section, 121 - shallow groove, 130 - distal tube section, 140 - incision, 200 - pulling structure, 210 - connecting piece, 220 - pulling member, 230 - limiting ring, 300 - operating handle, 400 - airbag, 510 - isolation piece, 520 - pulling channel, 600 - shuttling gap, 700 - protective layer. Detailed implementation manners

[0012] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Apparently, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other implementation manners obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0013] In the description and claims, "and / or" means at least one of the connected objects. The character " / " generally indicates an "or" relationship between the related objects before and after.

[0014] In the embodiments of the present application, "proximal" and "distal" refer to the relative distances from the user in the usage environment of the endoscope and its accessories. Among them, the end closer to the user is designated as "proximal", and the end farther from the user is designated as "distal".

[0015] The embodiments of the present application provide a tracheal catheter, including a tube body 100 and a pulling structure 200. The tube body 100 is an elongated tubular structure, and its structural dimensions are similar to those of the catheters in existing products. The tube body 100 includes a proximal tube section 110, a bending section 120, and a distal tube section 130 arranged in sequence from its proximal end to its distal end, as shown in the reference Figures 1 to 4 figure. The proximal tube section 110 is close to the proximal end face of the tube body 100, and the distal tube section 130 is close to the distal end face of the tube body 100. The distal end of the tube body 100 is used to be inserted into the human airway, and the proximal end of the tube body 100 is used to connect a connector, and the connector is used to connect the breathing pipeline of devices such as a ventilator and an anesthetic machine or other auxiliary instruments to ensure that gas can flow smoothly between the patient's lungs and the breathing equipment.

[0016] The bending section 120 is located between the proximal tube section 110 and the distal tube section 130. Moreover, the bending section 120 is arranged closer to the distal end face of the tube body 100 relative to the proximal end face of the tube body 100. That is, along the axial direction of the tube body 100, the distance between the bending section 120 and the distal end face of the tube body 100 is less than the distance between the bending section 120 and the proximal end face of the tube body 100. Since the bending section 120 and the distal end face are relatively close, when the bending section 120 bends, it can smoothly drive the distal tube section 130 of the tube body 100 to change its position, enabling the distal tube section 130 to rotate relative to the proximal tube section 110 with the bending section 120 as the rotation point.

[0017] The distal end of the pulling structure 200 is connected to the bending section 120, and the proximal end of the pulling structure 200 extends towards the proximal end of the tube body 100 for easy operation by the operator. The pulling structure 200 is configured to be able to squeeze a part of the tube wall of the bent part under the pulling of the operator, so that the bending section 120 bends towards the side where the part of the tube wall being squeezed is located, causing the distal tube section 130 to rotate relative to the proximal tube section 110 and realizing the overall bending of the tube body 100.

[0018] When the operator pulls the pulling structure 200, the pulling structure 200 is pulled from the distal end of the tube body 100 towards the proximal end of the tube body 100. The distal end of the pulling structure 200 moves accordingly, and a part of the bending section 120 connected to the distal end of the pulling structure 200 also moves accordingly. However, since the proximal end of the tube body 100 remains stable, with the movement of the pulling structure 200, a part of the tube wall of the bending section 120 will be squeezed, and the length of this part of the tube wall is shortened, causing the bending section 120 to bend towards the side where the part of the tube wall being squeezed is located, realizing the bending of the bending section 120.

[0019] Before the bending section 120 bends, the overall shape of the tube body 100 can be referred to Figure 2 as shown. After the bending section 120 bends, the overall shape of the tube body 100 can be referred to Figure 3 as shown. In addition, it should be noted that in existing products, the structure of the tracheal catheter has a certain bending angle. Therefore, for the convenience of bending the tube body 100, the part of the tube wall of the tube body 100 connected to the pulling structure 200 is located on the bending side of the tube body 100. With such a setting, when pulling the pulling structure 200 to bend the bending section 120, the bending angle of the part of the tube section between the distal end face of the distal tube section 130 and the connection position of the pulling structure 200 and the bending section 120 of the tube body 100 can be further increased.

[0020] In the tube body 100 provided in the embodiment of the present application, the bending position is close to the distal end face of the tube body 100, and at the same time, there is a certain distance from the distal end face of the tube body 100. After the bending section 120 is bent, the bending section 120 can smoothly drive the distal tube section 130 of the tube body 100 to change position. Compared with the proximal tube section 110, the distal tube section 130 can change position more obviously, and at the same time, it will not cause the increase of the distal size of the tube body 100, which is conducive to the normal insertion and use of the tube body 100. After the distal tube section 130 of the tube body 100 changes position, the distal tube section 130 can be used to push aside the tissue near the glottis, so that the tube body 100 can be smoothly inserted into the human airway.

[0021] Compared with the snake-bone structure, the tube body 100 provided in the embodiment of the present application has a simpler structure, a simpler manufacturing process, and a lower cost. The tube body 100 is generally made of a material with moderate hardness and softness. If the tube body 100 is too soft, the tube body 100 will be easily flattened, affecting the ventilation function of the tube body 100. If the tube body 100 is too hard and difficult to bend, it will cause difficulty in insertion and easily cause discomfort to the human body. When the tube body 100 is pulled by the pulling structure 200, the tube body 100 can maintain a stable bending state after bending, and is not easy to deform under the squeeze of human tissue. At the same time, the tube body 100 itself has a certain elasticity. After the operator releases the pulling structure 200, the force applied to the bending section 120 disappears, and the tube body 100 can return to its initial state.

[0022] The pulling structure 200 is an additional structure additionally provided on the tube body 100. The tube body 100 can maintain its existing structure without the need to improve the existing structure of the tube body 100. When the tube body 100 needs to be bent, the operator can pull the tube body 100, and the tube body 100 can maintain a stable bending state to push aside the human tissue blocking the glottis and insert the tube body 100 into the airway. When the tube body 100 does not need to be bent, the pulling structure 200 can be released.

[0023] The pulling structure 200 plays a role in transmitting force, transmitting the pulling force of the operator to the tube wall of the bending section 120. The pulling structure 200 can have a variety of structures. In some embodiments, the pulling structure 200 can be directly a pulling rope, which is attached to the outer wall of the tube body 100. It is necessary to set a related limiting structure to limit the position of the pulling rope, so that the pulling rope can only move along the outer wall of the tube body 100. Pulling the pulling rope controls the movement of the part of the tube wall connected to the pulling rope, and drives the tube body 100 to bend.

[0024] In some other embodiments of the present application, the pulling structure 200 includes a connecting piece 210 and a pulling member 220. Figure 9As shown, the cross-section of the connecting piece 210 is arc-shaped, and when the bending section 120 is not bent, the connecting piece 210 fits against the outer wall of the bending section 120. The distal end of the connecting piece 210 is fixed to the bending section 120, the distal end of the traction member 220 is fixed to the proximal end of the connecting piece 210, and the proximal end of the traction member 220 extends towards the proximal end of the tube body 100.

[0025] By pulling the traction member 220, the connecting piece 210 is driven to move, so as to control the bending of the bending section 120. The connecting piece 210 is a sheet-like structure, which increases the acting area of the traction member 220 on the bending section 120, so that the acting force transmitted by the traction member 220 can act on the bending section 120 as evenly as possible, making the bending effect of the bending section 120 better. At the same time, the connecting piece 210 is an arc-shaped sheet-like structure, which fits against the outer wall of the bending section 120, minimizing the overall size of the catheter in the radial direction and avoiding affecting the insertion and use of the catheter.

[0026] The central angle corresponding to the connecting piece 210 is generally about 120 degrees. This reduces the influence of the connecting piece 210 on the bending effect of the bending section 120. At the same time, it also makes the connecting piece 210 as wide as possible, making it more convenient for the operator to drive the bending section 120 to bend.

[0027] In some preferred embodiments, the traction member 220 is also arranged as a sheet-like structure, and the traction member 220 is arranged to fit against the wall surface of the tube body 100. The sheet-like traction member 220 can further reduce the size of the catheter in the radial direction and reduce the influence of the traction structure 200 on the use of the catheter.

[0028] In some embodiments, referring to Figure 5 As shown, a cut 140 communicating the inner and outer sides of the tube body 100 is provided at the tube wall of the tube body 100. A traction channel 520 communicating with its proximal end is provided inside the tube body 100. The cut 140 communicates with the traction channel 520. The distal end of the traction member 220 is located outside the tube body 100 and is connected to the connecting piece 210, and the other end of the traction member 220 passes through the cut 140 and extends into the traction channel 520 inside the tube body 100. The traction member 220 extends into the tube body 100 through the cut 140, which will not cause an increase in the radial size of the catheter. At the same time, it can also prevent the traction member 220 from directly contacting human tissues outside the tube body 100 and avoid the traction member 220 affecting the insertion of the tube body 100.

[0029] The connection positions of the cut 140 with the inner wall surface and the outer wall surface of the tube body 100 are both rounded to reduce the friction force received when the traction member 220 moves. At the same time, it also avoids the edges of the cut 140 rubbing against the traction member 220, resulting in damage to the structure of the traction member 220.

[0030] An isolation sheet 510 can be arranged inside the tube body 100. The isolation sheet 510 is fixed to the inner wall of the tube body 100, and a pulling channel 520 is formed between the isolation sheet 510 and the inner wall of the tube body 100. The isolation sheet 510 divides the inner space of the tube body 100 into two parts. One part is the pulling channel 520 communicating with the incision 140, and the other part is a gas channel. The gas channel only has openings communicating with the outside at both ends thereof. The pulling channel 520 provides an activity space for the pulling member 220, and at the same time avoids the situation that the presence of the incision 140 causes air leakage of the tube body 100.

[0031] After the pulling member 220 passes through the incision 140 and extends into the pulling channel 520, it can directly extend out through the proximal end of the tube body 100. In some other embodiments, an incision 140 can be arranged at the proximal tube section 110 of the tube body 100, and the pulling member 220 extends out of the pulling channel 520 through the incision 140.

[0032] In some other embodiments of the present application, reference can be made to Figure 6 As shown, the pulling member 220 is always outside the tube body 100. A protective layer 700 is sleeved outside the tube body 100. The protective layer 700 covers the outside of the tube body 100. The pulling member 220 is located between the outer wall of the tube body 100 and the protective layer 700 and moves in the gap between the protective layer 700 and the outer wall of the tube body 100. The protective layer 700 limits the radial relative position between the pulling member 220 and the tube body 100 to ensure that the pulling member 220 can always fit against the outer wall of the tube body 100. The protective layer 700 can be selected as a film structure to avoid excessive increase in the radial dimension of the catheter. In this structure, the pulling member 220 is preferably arranged as a sheet structure to further reduce the radial dimension of the catheter.

[0033] In some preferred embodiments of the present application, reference can be made to Figure 5 As shown, the pulling structure 200 further includes a limiting ring 230. The limiting ring 230 is sleeved outside the tube body 100. A shuttle gap 600 is formed between the inner wall of the limiting ring 230 and the outer wall of the tube body 100. The distal end of the connecting piece 210 is fixed to the tube body 100, and the proximal end movably passes through the shuttle gap 600. The limiting ring 230 is used for limiting and cooperating with the connecting piece 210 in the radial direction of the tube body 100 so that the connecting piece 210 can move while fitting against the outer wall of the tube body 100. The arrangement of the limiting ring 230 limits the moving direction of the connecting piece 210 to ensure that the connecting piece 210 can stably move in a preset direction under the pulling of the pulling member 220 so as to smoothly drive the bending section 120 to bend. The limiting ring 230 cooperates with the connecting piece 210 to limit the moving path of the connecting piece 210, and can also increase the bending angle of the bending section 120.

[0034] In some embodiments, the limiting ring 230 can be tightly sleeved outside the tube body 100, and the limiting ring 230 is fixed outside the tube body 100 by the frictional force between it and the tube body 100. When the operator pulls the connecting piece 210, the frictional force between the connecting piece 210 and the limiting ring 230 is not sufficient to drive the limiting ring 230 to move.

[0035] In some other embodiments, a fixed connection method such as gluing is used between the limiting ring 230 and the tube body 100. It can be that the proximal end of the limiting ring 230 is connected to the tube body 100, and there is still a shuttle gap 600 between the distal end of the limiting ring 230 and the tube body 100, which does not affect the movement of the connecting piece 210. Refer to Figure 5 as shown. It can also be that other areas of the limiting ring 230 are fixed to the tube body 100. The other areas refer to the areas located on the radial two sides of the tube body 100 with respect to the connecting piece 210. The fixed connection of this part of the limiting ring 230 to the tube body 100 will not affect the movement of the connecting piece 210 either.

[0036] When a protective layer 700 is sleeved outside the tube body 100 and the traction member 220 is located between the protective layer 700 and the tube body 100, refer to Figure 6 as shown. The limiting ring 230 is directly fixed to the protective layer 700. The limiting ring 230 can be sleeved outside the protective layer 700, or the protective layer 700 can be sleeved outside the limiting ring 230. At the same time, the protective layer 700 is spaced a certain distance from the connecting piece 210, and there is no mutual influence between the protective layer 700 and the connecting piece 210.

[0037] In some embodiments of the present application, the tracheal catheter further includes an operation handle 300. The operation handle 300 is sleeved outside the tube body 100 and is correspondingly located at the proximal tube section 110. Refer to Figures 1 to 4 as shown. The operation handle 300 is fixedly connected to the proximal end of the traction member 220. The operation handle 300 is configured to slide axially along the tube body 100 under the drive of the operator, so as to drive the traction member 220 to move.

[0038] Connecting the operation handle 300 to the traction member 220 makes it more convenient for the operator to control the movement of the traction member 220. The operation handle 300 can be provided with a groove curvature that fits the fingers to facilitate controlling the movement of the operation handle 300.

[0039] In some preferred embodiments, the distance between the operation handle 300 and the proximal end face of the tube body 100 is between 5 and 10 centimeters. When the palm of the operator presses tightly against the proximal end of the tube body 100, the fingers can hook the operation handle 300 to control the movement of the operation handle 300.

[0040] The tracheal tube further includes an airbag 400 for blocking the airway. The airbag 400 is sleeved outside the tube body 100, and the airbag 400 is located between the distal tube segment 130 and the bending segment 120. The airbag 400 is arranged closer to the distal end of the tube body 100 than the proximal end of the tube body 100. During the insertion of the tube body 100, the operator can also correct the direction of the distal end of the tube body 100 by controlling the size of the airbag 400. Moreover, the airbag 400 and the bending segment 120 are arranged close to each other, and the position of the airbag 400 can also be adjusted by controlling the bending of the bending segment 120 to give full play to the blocking effect of the airbag 400.

[0041] In some embodiments, when controlling the bending of the bending segment 120 so that the distal tube segment 130 pushes aside the surrounding human tissues and continues to be inserted forward, the airbag 400 can be inflated, so that the airbag 400 expands slightly, and the slightly expanded airbag 400 expands the surrounding tissues, providing a better operation view for the doctor and also facilitating the insertion of the tube body 100.

[0042] An inflation tube is connected to the airbag 400. The inflation tube is generally arranged inside the tube body 100 and is used to connect to a gas source to inflate the airbag 400.

[0043] In some preferred embodiments, the distal end of the connecting piece 210 is fixed between the outer wall of the tube body 100 and the airbag 400. The airbag 400 is sleeved outside the tube body 100 and at the same time outside the distal end of the connecting piece 210. The distal end of the connecting piece 210 is fixed to both the airbag 400 and the tube body 100, further increasing the connection stability between the connecting piece 210 and the tube body 100.

[0044] In some embodiments of the present application, refer to Figure 5 、 Figure 7 and Figure 8 As shown, at least one shallow groove 121 is provided on the outer wall surface of the part of the tube wall of the bending segment 120 that is squeezed. The shallow groove 121 can weaken the structural strength of this part of the tube wall, making the bending segment 120 easier to bend. At the same time, the part of the bending segment 120 that is squeezed corresponds to the connecting piece 210. When the bending segment 120 is not bent, the connecting piece 210 fits on the bending segment 120 to make up for the reduction in the structural strength of the tube wall caused by the provision of the shallow groove 121. Preferably, the depth of the shallow groove 121 is not greater than 40% of the wall thickness of the tube body 100. The shallow groove 121 should not be too deep, otherwise it is easy to cause the part of the tube wall provided with the shallow groove 121 to crack and be damaged during the bending process of the bending segment 120.

[0045] And / or, the tube body 100 further includes a first threaded section, and the first threaded section is located on the proximal side of the bending segment 120. The first threaded section can enhance the structural strength of this part of the tube segment and prevent the tube body 100 from collapsing.

[0046] And / or, the tube body 100 further includes a second threaded section, which is located on the distal side of the bending section 120 and on the proximal side of the distal tube section 130. The function of the second threaded section is the same as that of the first threaded section. At the same time, the arrangement of the second threaded section avoids the distal end of the tube body 100. The distal end of the tube body 100 needs to be in direct contact with the inner wall of the human body cavity. To avoid excessive strength at the distal end of the tube body 100, which may cause discomfort to the human body.

[0047] The embodiment of the present application also provides an endotracheal tube, which includes the tracheal catheter provided in any of the above embodiments. In the tracheal catheter, a connector can be further connected to the distal end of its tube body 100, and components such as a ventilator are connected by using the connector.

[0048] The embodiment of the present application also provides an endoscope, which includes the tracheal catheter provided in any of the above embodiments, and further includes a camera module, which is installed at the distal position of the tube body 100. Compared with the endotracheal tube, the endoscope structure can obtain image information inside the human airway. The camera module is also connected with a data line and the like for data transmission.

[0049] It should be noted that in this article, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including that element.

[0050] As described above, the above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, and all of them should be covered within the protection scope of the present invention.

Claims

1. A tracheal tube, characterized in that: The invention comprises a tube body (100) and a pulling structure (200), wherein the tube body (100) comprises a proximal tube segment (110), a curved segment (120), and a distal tube segment (130) arranged from the proximal end to the distal end thereof. The curved section (120) is arranged close to the distal end surface of the tube body (100) relative to the proximal end surface of the tube body (100); The distal end of the pulling structure (200) is connected to the curved section (120), and the proximal end of the pulling structure (200) extends toward the proximal end of the tube body (100). The pulling structure (200) is configured to squeeze a portion of the tube wall of the curved section (120) under the pulling of an operator, so that the curved section (120) bends toward the side where the squeezed portion of the tube wall is located, so that the distal tube section (130) rotates relative to the proximal tube section (110).

2. An endotracheal tube according to claim 1, characterized in that: The pulling structure (200) comprises a connecting piece (210) and a pulling member (220); the connecting piece (210) has an arc-shaped cross section, and when the bending section (120) is not bent, the connecting piece (210) is attached to the outer wall of the bending section (120); the distal end of the connecting piece (210) is fixed to the bending section (120); the distal end of the pulling member (220) is fixed to the proximal end of the connecting piece (210); and the proximal end of the pulling member (220) extends toward the proximal end of the tube body (100).

3. An endotracheal tube according to claim 2, characterized in that: The traction member (220) is a sheet-like structure, and the traction member (220) is arranged to fit the wall surface of the tube body (100).

4. An endotracheal tube according to claim 2, characterized in that: The tube body (100) is provided with a notch (140) on the tube wall which is connected to the inner and outer sides of the tube body (100); the tube body (100) is provided with a pulling channel (520) which is connected to the proximal end thereof; the notch (140) is connected to the pulling channel (520); the distal end of the traction member (220) is located outside the tube body (100) and is connected to the connecting piece (210); the other end passes through the notch (140) and extends into the pulling channel (520) in the tube body (100); Alternatively, the outer shell of the tube body (100) is provided with a protective layer (700), and the traction member (220) is located between the outer wall of the tube body (100) and the protective layer (700).

5. An endotracheal tube according to claim 2, characterized in that: The pulling structure (200) further comprises a limiting ring (230), wherein the limiting ring (230) is sleeved outside the tube body (100), and a shuttle gap (600) is formed between the inner wall of the limiting ring (230) and the outer wall of the tube body (100), and the proximal end of the connecting piece (210) is movably inserted into the shuttle gap (600), and the limiting ring (230) is used to limit and cooperate with the connecting piece (210) in the radial direction of the tube body (100), so that the connecting piece (210) can move in contact with the outer wall of the tube body (100).

6. An endotracheal tube according to claim 2, characterized in that: The endotracheal tube further comprises an operating handle (300), the operating handle (300) being sleeved outside the tube body (100) and correspondingly located at the proximal tube section (110), the operating handle (300) being fixedly connected to the proximal end of the traction member (220), and the operating handle (300) being configured to slide along the axial direction of the tube body (100) under the drive of an operator.

7. An endotracheal tube according to claim 2, characterized in that: The endotracheal tube further comprises an airbag (400) for blocking the airway, wherein the airbag (400) is sleeved outside the tube body (100), and the airbag (400) is located between the distal tube section (130) and the curved section (120), and the distal end of the connecting piece (210) is fixed between the outer wall of the tube body (100) and the airbag (400).

8. An endotracheal tube according to claim 1, characterized in that: The outer wall surface of the squeezed part of the tube wall of the curved section (120) is provided with at least one shallow groove (121), and the depth of the shallow groove (121) is not greater than 40% of the wall thickness of the tube body (100); And / or, the tube body (100) further comprises a first thread segment, the first thread segment being located at the proximal end side of the curved segment (120); And / or, the tube body (100) further comprises a second thread segment, the second thread segment is located at the distal end side of the curved segment (120), and the second thread segment is located at the proximal end side of the distal tube segment (130); And / or, the endotracheal tube further comprises an airbag (400) for blocking the airway, wherein the airbag (400) is sleeved outside the tube body (100), and the airbag (400) is located between the distal tube section (130) and the curved section (120).

9. A tracheal intubation, characterized in that: A tracheal tube comprising the tracheal tube according to any one of claims 1 to 8.

10. An endoscope, characterized in that: The endotracheal tube comprises the endotracheal tube according to any one of claims 1 to 8, and further comprises a camera module, wherein the camera module is installed at the distal end of the tube body (100).

Images