Tracheal tube, tracheal cannula and endoscope

Abstract

The application discloses a tracheal catheter, a tracheal cannula and an endoscope, and belongs to the technical field of medical devices. The tracheal catheter comprises a pipe body and a pulling structure. The pipe body comprises a proximal pipe section, a curved section and a distal pipe section arranged from the proximal end to the distal end of the pipe body. The curved section is arranged close to the distal end face of the pipe body relative to the proximal end face of the pipe body. The distal end of the pulling structure is connected with the curved section, and the proximal end of the pulling structure extends towards the proximal end of the pipe body. The pulling structure is configured to extrude part of the pipe wall of the curved section under the pulling of an operator, so that the curved section bends towards the side where the part of the pipe wall is extruded, and the distal pipe section rotates relative to the proximal pipe section. The pulling structure is arranged to cooperate with the curved section to drive the pipe body to bend from the position of the curved section, so that the increase of the size of the distal end of the pipe body is avoided, and the normal insertion and use of the pipe body are facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a tracheal catheter, a tracheal cannula and an endoscope. BACKGROUND

[0002] In the prior art, in the process of inserting the tracheal cannula into the airway of the human body, the tracheal cannula needs to be appropriately bent to adapt to the bending of the airway of the human body.

[0003] In the related art, some tracheal cannulas directly adopt the structure of an endoscope snake bone, and the snake bone part is connected with a traction member, and the bending of the tracheal cannula is controlled by pulling the traction member. By using the curved trachea, the tracheal cannula is smoothly inserted into the airway by avoiding the surrounding tissues and the glottis. However, this cannula structure is complex, the cost is high, and the wall thickness of the distal snake bone part is increased; in addition, in the process of advancing the cannula into the airway, the snake bone part is easily bent by the surrounding tissues and cannot maintain the stability of the overall shape, which affects the advancing effect; and the snake bone part is bent from the distal end position thereof, and in the process of bending, the overall size of the distal end of the cannula is excessively increased, which affects the advancing effect. SUMMARY

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

[0005] The present application is implemented as follows:

[0006] In a first aspect, the present application provides a tracheal catheter, which comprises a tube body and a pulling structure, the tube body comprises a proximal tube segment, a bending segment and a distal tube segment arranged from the proximal end to the distal end thereof, the bending segment is arranged close to the distal end face of the tube body relative to the proximal end face of the tube body; the distal end of the pulling structure is connected with the bending segment, and the proximal end of the pulling structure extends toward the proximal end of the tube body; the pulling structure is configured to be capable of extruding part of the tube wall of the bending segment under the pulling of the operator, so as to make the bending segment bend toward the side where the part of the tube wall is extruded, so as to make the distal tube segment rotate relative to the proximal tube segment.

[0007] In a second aspect, the present application provides a tracheal cannula, which comprises the tracheal catheter provided in the first aspect.

[0008] In a third aspect, the present application provides an endoscope, which comprises the tracheal catheter provided in the first aspect, and further comprises a camera module, the camera module is installed at the distal end position of the tube body.

[0009] The technical scheme provided by the present application can achieve the following beneficial effects:

[0010] In the application, the pulling structure is arranged on the outer wall of the pipe body, the bending section is driven to bend by the pulling structure, so that the distal end pipe section of the pipe body is bent relative to the proximal end pipe section, the pipe body is bent from the position of the bending section, which does not cause the increase of the size of the distal end of the pipe body, and is beneficial to the normal insertion and use of the pipe body; and the additional structure is directly arranged on the pipe body, the pipe body can maintain its existing structure, when the pipe body is not needed to be bent, the pulling structure is loosened, and the use of the pipe body is not affected, when the pipe body is needed to be bent, the pipe body is bent by pulling the pulling structure, and the use is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0012] Figure 1 is the overall structure schematic of the tracheal tube provided by some embodiments of the present application Figure 1 ;

[0013] Figure 2 is the overall structure schematic of the tracheal tube provided by some embodiments of the present application Figure 2 ;

[0014] Figure 3 is the overall structure schematic of the tracheal tube provided by some embodiments of the present application Figure 3 ;

[0015] Figure 4 is the sectional view of the tracheal tube provided by some embodiments of the present application

[0016] Figure 5 is the detail of A in the present application Figure 4 ; Figure 1

[0017] Figure 6 is the detail of A in the present application Figure 4 ; Figure 2

[0018] Figure 7 is the overall structure schematic of the pipe body provided by some embodiments of the present application

[0019] Figure 8 is the detail of B in the present application Figure 7 ;

[0020] Figure 9 is the schematic diagram of the pulling structure provided by some embodiments of the present application ​​

[0021] In the figure: 100-tube body, 110-proximal tube segment, 120-bent segment, 121-shallow groove, 130-distal tube segment, 140-incision, 200-pulling structure, 210-connection sheet, 220-pulling piece, 230-limiting ring, 300-operation handle, 400-air bag, 510-isolation sheet, 520-pulling channel, 600-shuttle gap, 700-protection layer. DETAILED DESCRIPTION

[0022] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described in detail below. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present application.

[0023] In the specification and claims, "and / or" means at least one of the connected objects, and the character " / " generally means that the front and rear associated objects are in an "or" relationship.

[0024] In the embodiments of the present application, "proximal end" and "distal end" refer to the relative position of the endoscope and its accessories in the use environment relative to the user, wherein the end closer to the user is designated as "proximal end", and the end farther away from the user is designated as "distal end".

[0025] The present application provides a tracheal tube, which comprises a tube body 100 and a pulling structure 200. The tube body 100 is an elongated tubular structure, and its structural size is similar to that of the existing product. Figures 1 to 4 The tube body 100 comprises a proximal tube segment 110, a bent segment 120 and a distal tube segment 130 arranged from the proximal end to the distal end of the tube body 100, as shown in the figure. The proximal tube segment 110 is close to the proximal end face of the tube body 100, and the distal tube segment 130 is close to the distal end face of the tube body 100. The distal end of the tube body 100 is used for insertion into the human airway, and the proximal end of the tube body 100 is used for connecting a connector, which is used for connecting the breathing pipeline of a breathing machine, an anesthesia machine or other auxiliary instruments, to ensure that the gas can flow smoothly between the patient's lungs and the breathing equipment.

[0026] The bending section 120 is located between the proximal tube section 110 and the distal tube section 130, and 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 smaller than the distance between the bending section 120 and the proximal end face of the tube body 100. The bending section 120 is closer to the distal end face, and when the bending section 120 bends, the distal tube section 130 of the tube body 100 can be smoothly driven to change position, so that the distal tube section 130 can rotate relative to the proximal tube section 110 with the bending section 120 as the rotation point.

[0027] 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 the operator to control. The pulling structure 200 is configured to be able to extrude the part of the tube wall when pulled by the operator, so that the bending section 120 bends towards the side where the part of the tube wall is extruded, so that the distal tube section 130 rotates relative to the proximal tube section 110, realizing the overall bending of the tube body 100.

[0028] 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, and the distal end of the pulling structure 200 moves accordingly, and the 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 is stable, as the pulling structure 200 moves, it will extrude part of the tube wall of the bending section 120, the length of the part of the tube wall is shortened, so that the bending section 120 bends towards the side where the part of the tube wall is extruded, realizing the bending of the bending section 120.

[0029] Before the bending section 120 bends, the overall shape of the tube body 100 can refer to Figure 2 After the bending section 120 bends, the overall shape of the tube body 100 can refer to Figure 3 In addition, it should be noted that in existing products, the structure of the tracheal tube has a certain bending angle. Therefore, in order to facilitate the bending of 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, so that when the pulling structure 200 is pulled 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 can be further increased.

[0030] The pipe body 100 provided by the embodiments of the present application has a bending position close to the distal end surface of the pipe body 100, and meanwhile, there is a certain distance from the distal end surface of the pipe body 100. After the bending section 120 is bent, the bending section 120 can smoothly drive the position change of the distal end pipe section 130 of the pipe body 100. Compared with the proximal end pipe section 110, the distal end pipe section 130 can have a more obvious position change, and meanwhile, the increase of the size of the distal end of the pipe body 100 is avoided, which is beneficial to the normal insertion and use of the pipe body 100. After the position change of the distal end pipe section 130 of the pipe body 100, the distal end pipe section 130 can be used to push away the tissues near the glottis, so that the pipe body 100 can be smoothly inserted into the airway of the human body.

[0031] Compared with the snake bone structure, the pipe body 100 provided by the embodiments of the present application has a simpler structure, a simpler manufacturing process and a lower cost. The pipe body 100 is generally made of a material with moderate hardness. If the pipe body 100 is too soft, the pipe body 100 is easy to be crushed, which affects the ventilation function of the pipe body 100. If the pipe body 100 is too hard, it is not easy to bend, which causes difficulty in insertion and easily causes discomfort to the human body. When the pulling structure 200 is used to pull the pipe body 100, the pipe body 100 can maintain a stable bending state after being bent and is not easy to be deformed under the extrusion of the human tissues. Meanwhile, the pipe body 100 has a certain elasticity. After the operator releases the pulling structure 200, the acting force applied to the bending section 120 disappears, and the pipe body 100 can return to the initial state.

[0032] The pulling structure 200 is an additional structure additionally arranged on the pipe body 100. The pipe body 100 can maintain its existing structure, and the existing structure of the pipe body 100 does not need to be improved. When the pipe body 100 needs to be bent, the operator can pull the pipe body 100. The pipe body 100 can maintain a stable bending state to push away the human tissues blocking the glottis and insert the pipe body 100 into the airway. When the pipe body 100 does not need to be bent, the pulling structure 200 can be released.

[0033] The pulling structure 200 plays a role of force transmission and transmits the pulling force of the operator to the pipe wall of the bending section 120. The pulling structure 200 can have various structures. In some embodiments, the pulling structure 200 can be directly a traction rope attached to the outer wall of the pipe body 100. A related limiting structure needs to be arranged to limit the position of the traction rope, so that the traction rope can only move along the outer wall surface of the pipe body 100. The traction rope is pulled to control the movement of the part of the pipe wall connected with the traction rope and drive the pipe body 100 to bend.

[0034] In some other embodiments of the present application, the pulling structure 200 includes a connecting piece 210 and a traction piece 220. For details, refer to the description of the connecting piece 210 and the traction piece 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 is attached to the outer side 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.

[0035] By pulling the traction member 220, the connecting piece 210 is driven to move to control the bending of the bending section 120. The connecting piece 210 is a sheet structure, which increases the acting area of the traction member 220 on the bending section 120, so that the force transmitted by the traction member 220 can act on the bending section 120 as evenly as possible, so that the bending effect of the bending section 120 is better. At the same time, the connecting piece 210 is an arc-shaped sheet structure, which is attached to the outer wall of the bending section 120, so that the overall size of the catheter in the radial direction is as small as possible, avoiding affecting the insertion of the catheter.

[0036] The corresponding central angle of 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, and also makes the connecting piece 210 as wide as possible, which is more convenient for the operator to drive the bending section 120 to bend.

[0037] In some preferred embodiments, the traction member 220 is also provided in a sheet structure, which is attached to the wall of the tube body 100. The sheet-shaped traction member 220 can further reduce the size of the catheter in the radial direction, reducing the influence of the traction structure 200 on the use of the catheter.

[0038] In some embodiments, referring to Figure 5 As shown, the tube wall of the tube body 100 is provided with a cutout 140 communicating between the inner and outer sides of the tube body 100, and the tube body 100 is provided with a pulling channel 520 communicating with the proximal end thereof, the cutout 140 communicates with the pulling channel 520, the distal end of the traction member 220 is located outside the tube body 100 and connected to the connecting piece 210, and the other end of the traction member 220 extends into the pulling channel 520 inside the tube body 100 through the cutout 140. The traction member 220 extends into the tube body 100 through the cutout 140, which does not increase the radial size of the catheter, and also avoids direct contact of the traction member 220 with human tissues outside the tube body 100, avoiding the influence of the traction member 220 on the insertion of the tube body 100.

[0039] The junctions of the cutout 140 with the inner wall and the outer wall of the tube body 100 are chamfered to reduce the friction force when the traction member 220 moves, and also to avoid the edges of the cutout 140 rubbing the traction member 220, which may damage the structure of the traction member 220.

[0040] An isolation plate 510 can be installed inside the tube body 100. The isolation plate 510 is fixed to the inner wall of the tube body 100, forming a traction channel 520 between itself and the inner wall of the tube body 100. The isolation plate 510 divides the internal space of the tube body 100 into two parts: one part is the traction channel 520 that communicates with the cut 140, and the other part is a gas channel. The gas channel only has openings at both ends that communicate with the outside. The traction channel 520 provides room for the traction member 220 to move, while preventing air leakage from the tube body 100 caused by the presence of the cut 140.

[0041] After the traction member 220 extends into the traction channel 520 through the cut 140, it can extend directly through the proximal end of the tube body 100. In some other embodiments, the cut 140 can be provided at the proximal tube segment 110 of the tube body 100, through which the traction member 220 extends from the traction channel 520.

[0042] In other embodiments of this application, reference may be made to Figure 6 As shown, the traction member 220 remains outside the tube body 100. A protective layer 700 is provided over the tube body 100, covering it. The traction member 220 is located between the outer wall of the tube body 100 and the protective layer 700, moving within the gap between them. The protective layer 700 restricts the radial relative position of the traction member 220 and the tube body 100, ensuring that the traction member 220 remains in contact with the outer wall of the tube body 100. The protective layer 700 can be a thin-film structure to avoid excessive increase in the radial dimension of the conduit. In this structure, the traction member 220 is preferably a sheet-like structure to further reduce the radial dimension of the conduit.

[0043] In some preferred embodiments of this application, reference is made to Figure 5 As shown, the tensioning structure 200 also includes a limiting ring 230, which is sleeved on the outside of 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, while the proximal end movably passes through the shuttle gap 600. The limiting ring 230 is used to limit the movement of the connecting piece 210 in the radial direction of the tube body 100, allowing the connecting piece 210 to move against the outer wall of the tube body 100. The limiting ring 230 restricts the movement direction of the connecting piece 210, ensuring that the connecting piece 210 can move stably in a preset direction under the tension of the tensioning member 220, thus smoothly driving the bending section 120 to bend. The limiting ring 230, in cooperation with the connecting piece 210, restricts the movement path of the connecting piece 210 and can also increase the bending angle of the bending section 120.

[0044] 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 friction force between the limiting ring 230 and the tube body 100. When the operator pulls the connecting sheet 210, the friction force between the connecting sheet 210 and the limiting ring 230 is also not enough to drive the limiting ring 230 to move.

[0045] In other embodiments, the limiting ring 230 and the tube body 100 are connected by a fixed connection mode such as glue. The proximal end of the limiting ring 230 can be connected with the tube body 100, and the distal end of the limiting ring 230 and the tube body 100 still have the shuttle gap 600, which does not affect the movement of the connecting sheet 210, as shown in Figure 5 . The other regions of the limiting ring 230 can also be fixed with the tube body 100, and the other regions refer to the regions on the two sides of the connecting sheet 210 in the radial direction of the tube body 100. The part of the limiting ring 230 fixedly connected with the tube body 100 also does not affect the movement of the connecting sheet 210.

[0046] In the case that the 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, the limiting ring 230 can be directly fixed to the protective layer 700, and 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, as shown in Figure 6 . At the same time, the protective layer 700 is spaced apart from the connecting sheet 210 by a certain distance, and the protective layer 700 and the connecting sheet 210 do not affect each other.

[0047] In some embodiments of the present application, the tracheal tube further comprises an operation handle 300, which is sleeved outside the tube body 100 and corresponds to the proximal tube segment 110, as shown in Figures 1 to 4 . The operation handle 300 is fixedly connected with the proximal end of the traction member 220, and the operation handle 300 is configured to slide along the axial direction of the tube body 100 under the driving of the operator, so as to drive the traction member 220 to move.

[0048] By connecting the operation handle 300 with the traction member 220, it is more convenient for the operator to control the movement of the traction member 220. The operation handle 300 can be provided with a recessed arc that fits the fingers, so as to facilitate the control of the movement of the operation handle 300.

[0049] In some preferred embodiments, the distance between the operation handle 300 and the proximal end face of the tube body 100 is between 5-10 cm. When the palm of the operator abuts 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.

[0050] The tracheal tube further comprises a cuff 400 for blocking the airway, the cuff 400 is sleeved outside the tube body 100, and the cuff 400 is located between the distal tube segment 130 and the curved segment 120. The cuff 400 is arranged closer to the distal end of the tube body 100 than the proximal end of the tube body 100, and the operator can also correct the pointing of the distal end of the tube body 100 by controlling the size of the cuff 400 during the insertion of the tube body 100. Moreover, the cuff 400 and the curved segment 120 are arranged close to each other, and the position of the cuff 400 can also be adjusted by controlling the bending of the curved segment 120 to fully exert the blocking effect of the cuff 400.

[0051] In some embodiments, the curved segment 120 is bent so that the distal tube segment 130 pushes away the surrounding human tissue and continues to insert forward, and at the same time, the cuff 400 is inflated so that the cuff 400 is slightly inflated, the slightly inflated cuff 400 expands the surrounding tissue, providing a better operating field for the doctor, and the tube body 100 can be better inserted.

[0052] The cuff 400 is connected with an inflation tube, which is generally arranged inside the tube body 100, and the inflation tube is used to connect a gas source to inflate the cuff 400.

[0053] 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 cuff 400. The cuff 400 is sleeved outside the tube body 100, and at the same time, the distal end of the connecting piece 210 is sleeved outside the cuff 400, so that the distal end of the connecting piece 210 is fixed with the cuff 400 and the tube body 100, further increasing the connection stability between the connecting piece 210 and the tube body 100.

[0054] In some embodiments of the present application, as shown in Figure 5 、 Figure 7 and Figure 8 , the outer wall surface of the part of the tube wall of the curved segment 120 that is extruded is provided with at least one shallow groove 121. The shallow groove 121 can weaken the structural strength of the part of the tube wall, so that the curved segment 120 is more easily bent. At the same time, the part of the curved segment 120 that is extruded corresponds to the connecting piece 210, and when the curved segment 120 is not bent, the connecting piece 210 is attached to the curved segment 120, making up for the decrease in the structural strength of the tube wall caused by 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 where the shallow groove 121 is provided to be damaged or broken during the bending of the curved segment 120.

[0055] Furthermore, the tube body 100 further comprises a first threaded segment, which is located on the proximal side of the curved segment 120. The first threaded segment can enhance the structural strength of the part of the tube segment, avoiding the collapse of the tube body 100, etc.

[0056] And / or, the pipe body 100 further comprises a second threaded segment, which is located on the distal end side of the curved segment 120 and on the proximal end side of the distal pipe segment 130. The second threaded segment has the same function as the first threaded segment, and meanwhile, the second threaded segment is arranged away from the distal end of the pipe body 100. The distal end of the pipe body 100 needs to be directly in contact with the inner wall of the human body cavity, and the strength of the distal end of the pipe body 100 is avoided to be too large to cause the discomfort of the human body.

[0057] The embodiments of the present application further provide a tracheal cannula, which comprises the tracheal tube provided by any of the above embodiments. In the tracheal tube, the distal end of the pipe body 100 can be further connected with a connector, which is used to connect components such as a breathing machine.

[0058] The embodiments of the present application further provide an endoscope, which comprises the tracheal tube provided by any of the above embodiments and further comprises a camera module, which is installed at the distal end of the pipe body 100. Compared with the tracheal cannula, the endoscope structure can obtain image information in the airway of the human body. The camera module is also connected with a data line and the like for data transmission.

[0059] It should be noted that, in the present text, the terms "comprising", "containing" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of another identical element in the process, method, article or device including the element.

[0060] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A tracheal tube, characterized in that, It includes a tube body (100) and a tension structure (200), the tube body (100) including a proximal tube segment (110), a curved section (120) and a distal tube segment (130) arranged from its proximal end to its distal end. The curved section (120) is positioned with its proximal end face close to the distal end face of the tube body (100) relative to the tube body (100). The distal end of the traction structure (200) is connected to the bending section (120), and the proximal end of the traction structure (200) extends toward the proximal end of the tube body (100). The traction structure (200) is configured to compress a portion of the tube wall of the bending section (120) under the pull of an operator, thereby causing the bending section (120) to bend toward the side where the compressed portion of the tube wall is located, so that the distal tube section (130) rotates relative to the proximal tube section (110). The traction structure (200) includes a connecting piece (210) and a traction member (220). The connecting piece (210) has an arc-shaped cross-section, and when the curved section (120) is not bent, the connecting piece (210) is attached to the outer wall of the curved section (120). The distal end of the connecting piece (210) is fixed to the curved section (120), and the distal end of the traction member (220) is fixed to the proximal end of the connecting piece (210). The proximal end of the traction member (220) extends toward the proximal end of the tube body (100). The tensioning structure (200) further includes a limiting ring (230), which is sleeved on the outside of 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 proximal end of the connecting piece (210) is movably inserted into the shuttle gap (600). The limiting ring (230) is used to limit the connection piece (210) in the radial direction of the tube body (100), so that the connecting piece (210) can move against the outer wall of the tube body (100). The endotracheal tube also includes an airbag (400) for blocking the airway. The airbag (400) is sleeved outside the tube body (100) and is located between the distal tube segment (130) and the curved segment (120). The distal end of the connecting piece (210) is fixed between the outer wall of the tube body (100) and the airbag (400).

2. The endotracheal tube according to claim 1, characterized in that, The traction component (220) is a sheet-like structure and is fitted to the wall of the tube body (100).

3. The endotracheal tube according to claim 1, characterized in that, The tube body (100) has a cut (140) on its wall that connects the inner and outer sides of the tube body (100). The tube body (100) has a traction channel (520) that connects to its proximal end. The cut (140) is connected to the traction channel (520). The distal end of the traction member (220) is located outside the tube body (100) and connected to the connecting piece (210). The other end passes through the cut (140) and extends into the traction channel (520) inside the tube body (100). Alternatively, the tube body (100) may be covered with a protective layer (700), and the traction member (220) may be located between the outer wall of the tube body (100) and the protective layer (700).

4. The endotracheal tube according to claim 1, characterized in that, The endotracheal tube also includes an operating handle (300), which is sleeved on the outside of the tube body (100) and located at the proximal tube segment (110). The operating handle (300) is fixedly connected to the proximal end of the traction member (220). The operating handle (300) is configured to slide along the axial direction of the tube body (100) under the drive of the operator.

5. A tracheal tube according to claim 1, characterized in that, The outer wall surface of the compressed portion of the pipe wall in the bent section (120) is provided with at least one shallow groove (121), the depth of which is no greater than 40% of the wall thickness of the pipe body (100); And / or, the tube body (100) further includes a first threaded section located on the proximal side of the bent section (120); And / or, the tube body (100) further includes a second threaded section located on the distal side of the curved section (120) and on the proximal side of the distal tube section (130).

6. An endotracheal tube, characterized in that, Includes the endotracheal tube as described in any one of claims 1-5.

7. An endoscope, characterized in that, The endotracheal tube according to any one of claims 1-6 further includes a camera module, the camera module being installed at the distal end of the tube body (100).

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