A visual endotracheal tube kit

Abstract

The present invention discloses a visual endotracheal tube kit, comprising an endotracheal tube and a guide core, wherein the endotracheal tube extends from a proximal end to a distal end and forms a lumen inside, the endotracheal tube is provided with a first opening at the distal end and a second opening at the proximal end, and an inflatable cuff is provided on the outer wall near the first opening; a camera is provided at the distal end of the guide core, the guide core can be inserted into the lumen of the endotracheal tube from the second opening at the proximal end, and the camera is positioned near the first opening, and the camera is used to capture images of the distal end of the endotracheal tube; and a first positioning device is also included, which is used to position the camera in the inner cavity of the endotracheal tube near the first opening, so that the insertion of the guide core into the endotracheal tube is simpler, and the airway images captured by the camera are more accurate and clear, so that intubation is smoother, the success rate of endotracheal intubation of difficult airways and the safety of patients in the perioperative period are greatly improved, and the pain of patients during intubation is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of medical equipment, and in particular to a tracheal tube kit with a visual function. Background Art

[0002] Tracheal intubation is the insertion of a tracheal tube into the patient's trachea, which is widely used in medical rescue and surgical anesthesia. However, difficult airway has always been the nightmare of every anesthesiologist. The application of visual technology in intubation has made tracheal intubation easier and easier. Various types of visual soft mirrors and visual hard mirrors facilitate doctors' intubation, improve the success rate of intubation, reduce intubation time, and reduce the pain of patients during intubation.

[0003] The application of visual technology has important reference significance for the visual introduction kit of tracheal tube. The visual laryngoscope is easy to operate, but the front end cannot be turned at will, and the glottis cannot be found at will in the oral cavity. It is subject to certain restrictions in the application of difficult airway, especially in the treatment of emergency airway, where it is particularly important to find the glottis quickly. The use of a visual soft mirror is not suitable for emergency difficult airway due to the lack of accuracy, complexity, and time-consuming operation, and requires certain operating experience and skills.

[0004] In addition, endotracheal intubation involves the use of endotracheal tubes for intubation and tube replacement. Since traditional endotracheal tubes are relatively soft as intubation tubes, a guide core is usually required for intubation and tube replacement. The endotracheal tube guide core is mainly used clinically to shape the endotracheal tube during endotracheal intubation, so that the shape of the endotracheal tube and the shape of the airway are as consistent as possible, so that it can be inserted into the airway more smoothly. This guide core needs to be pre-bent before intubation so that the endotracheal tube can pass through the glottis smoothly and enter the corresponding bronchus. However, the airway structure of different patients is different, so the bending angle of the guide core needs to be bent according to the patient's airway structure. This will result in an inappropriate pre-bending angle, and the endotracheal tube and the guide core need to be pulled out and bent again for intubation, which not only prolongs the intubation time, but also causes more pain to the patient due to multiple intubations.

[0005] In addition, there are products that add a camera to the front end of the guide core to solve the problem of blind insertion. However, since the tracheal tube needs to provide auxiliary ventilation to the patient during the intubation process, the inner diameter of the ventilation lumen of the tracheal tube is relatively large. When inserting the guide core into the tracheal lumen, a certain gap still needs to be retained between the guide core and the inner wall of the trachea to ensure that the patient can still be actively ventilated through this gap during the intubation process. Since the guide core needs to be bent before intubation in order to pre-bend and shape the flexible tracheal tube, and the existence of this gap causes the camera to not be positioned at the center of the tracheal tube after the guide core is pre-bent, especially the front end of the camera is close to the inner wall of one side of the tracheal tube, so that the axis of the camera forms a large angle with the longitudinal axis of the tracheal tube, and the image collected by the camera is biased to one side of the airway, and even can only observe the inner wall of the airway, but cannot observe the image of the front end of the airway. In addition, since the guide core is usually designed to be longer than the tracheal tube, when inserting the guide core into the tracheal tube, the doctor or nurse needs to position the camera at an uncertain position from the front end of the tracheal tube to the opening based on experience. Different camera positions will also lead to inconsistent images captured by the camera, thereby affecting the visual effect. Summary of the invention

[0006] In view of the technical problems raised in the background art, the present invention provides a visual endotracheal tube kit, in order to at least partially solve at least one of the above technical problems.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] The present invention relates to a visual tracheal tube kit, which comprises a tracheal tube and a guide core, wherein:

[0009] The tracheal tube extends from the proximal end to the distal end and forms a lumen inside. The tracheal tube is provided with a first opening at the distal end and a second opening at the proximal end. An inflatable cuff is provided on the outer wall near the first opening.

[0010] A camera is provided at the distal end of the guide core, and the guide core can be inserted into the lumen of the tracheal tube from the second opening at the proximal end, and the camera is placed close to the first opening, and the camera is used to capture an image of the distal end of the tracheal tube;

[0011] The invention also comprises a first positioning device for positioning the camera near the first opening and positioning the camera in the inner cavity of the endotracheal tube axially and radially.

[0012] In a further preferred embodiment, the first positioning device is disposed on the periphery of the camera head and positioned with the inner wall of the endotracheal tube, and the first positioning device is a hollow structure.

[0013] In a further preferred embodiment, the first positioning device includes an inner ring, an outer ring, and a plurality of support rods arranged between the inner ring and the outer ring, the plurality of support rods are used to fix the inner ring and the outer ring, the inner ring is fixedly connected to the outer periphery of the camera, and the outer ring can be positioned on the inner wall of the tracheal tube to position the camera relative to the inner wall of the tracheal tube.

[0014] A further preferred embodiment further comprises at least one engaging device, which is arranged on the inner wall of the endotracheal tube and is used to position the outer ring, and the engaging device comprises at least one of an annular groove, a clamping ring, a clamping block or a protrusion arranged on the inner wall of the endotracheal tube.

[0015] In a further preferred embodiment, the outer ring and the inner ring are offset along the longitudinal axis of the endotracheal tube, and the outer ring is arranged at the front end of the inner ring.

[0016] In a further preferred embodiment, the outer ring is provided with at least one notch.

[0017] In a further preferred embodiment, at least the outer surface of the outer ring has an arc-shaped cross section, and the annular groove matches the arc-shaped cross section of the outer ring.

[0018] In a further preferred embodiment, the distal end of the guide core is a bendable section, and the proximal end is provided with an angle adjustment device for adjusting the angle of the bendable section.

[0019] In a further preferred embodiment, the second opening at the proximal end of the endotracheal tube is provided with an auxiliary ventilation connection piece for actively ventilating the patient during the insertion of the endotracheal tube.

[0020] A further preferred embodiment further comprises a second positioning device, which is disposed at the proximal end of the endotracheal tube and is used to position the guide core proximally to the endotracheal tube.

[0021] Compared with the prior art, the visual endotracheal tube kit of the patent of the present invention has the following beneficial effects: the operation of inserting the guide core into the endotracheal tube is simpler, and it can ensure that the camera at the front end of the guide core always remains consistent with the longitudinal axis of the endotracheal tube, the collected airway images are more accurate and clear, the intubation process is smoother, and the guide core has a structure with an adjustable bending angle, so there is no need to pre-bend and shape the endotracheal tube in advance or repeatedly. The bending angle of the endotracheal tube can be adjusted at any time according to the patient's airway structure and the observed images, which can greatly improve the one-time success rate of endotracheal intubation and reduce the time and injury of endotracheal intubation. Even inexperienced doctors can complete endotracheal intubation after training in a shorter time, greatly improving the success rate of endotracheal intubation in difficult airways and perioperative patient safety, and reducing the pain of patients during intubation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1A stereoscopic diagram of an embodiment of a visual endotracheal tube kit protected by the present invention;

[0023] Figure 2 A front view of an embodiment of a visual endotracheal tube kit protected by the present invention;

[0024] Figure 3 for Figure 2 A cross-sectional view of an embodiment along AA;

[0025] Figure 4 for Figure 3 A partial enlarged view of point B in the middle;

[0026] Figure 5 A stereoscopic diagram of an embodiment of a first positioning device of a visual endotracheal tube kit protected by the present invention;

[0027] Figure 6 for Figure 5 Middle view along C direction;

[0028] Figure 7 for Figure 2 A cross-sectional view of another embodiment along the AA line;

[0029] Figure 8 for Figure 7 A partial enlarged view of point D in the middle;

[0030] Fig. 9 A stereoscopic diagram of another embodiment of the first positioning device of the visual endotracheal tube kit protected by the present invention;

[0031] Fig.10 A left side view of another embodiment of the first positioning device of the visual endotracheal tube kit protected by the present invention;

[0032] Fig.11 for Fig. 9 Middle view along E direction;

[0033] Fig.12 A three-dimensional diagram of another embodiment of the visual endotracheal tube kit protected by the present invention;

[0034] Fig.13 A front view of another embodiment of the visual endotracheal tube kit protected by the present invention;

[0035] Fig.14 for Fig.13 Sectional view at the middle edge FF;

[0036] Fig.15 for Fig.12 Partial cross-sectional view at point G in the middle.

[0037] In the figure: 10-visual endotracheal tube kit, 11-endotracheal tube, 111-first opening, 112-second opening, 113-inflatable cuff, 1131-inflation nozzle, 114-annular groove, 115-block, 12-guide core, 121-camera, 122-connector, 123-angle adjustment device, 1231-snake structure, 1232-first traction guide wire, 1233-second traction guide wire, 1234-operating component, 12341-grip portion, 12342-rotating shaft, 12343-rotating sheet, 12344-sliding element, 13-first positioning device, 131-inner ring, 132-outer ring, 133-support rod, 134-notch, 14-second positioning device, 141-connector, 142-end cap, 15-auxiliary ventilation connector, 151-lateral connecting channel. DETAILED DESCRIPTION

[0038] 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.

[0039] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and Examples. It should be understood that the specific embodiments described herein are only configured to explain the present invention and are not configured to limit the present invention. For those skilled in the art, the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by illustrating examples of the present invention.

[0040] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0041] like Figure 1-Figure 15Shown are various views and partial views of the visual endotracheal tube kit protected by the patent of the present invention.

[0042] For the sake of ease of description, the end where the doctor operates is defined as the "proximal end" or "rear end", and the end away from the doctor's operation is defined as the "distal end" or "front end".

[0043] in, Figure 1 It is a stereoscopic diagram of an embodiment of a visual tracheal tube kit 10 of the present invention. The visual tracheal tube kit 10 includes a tracheal tube 11 and a guide core 12. The guide core 12 can be inserted into the tracheal tube 11 and can bend and shape the tracheal tube kit 10 to adapt to the patient's airway structure during tracheal intubation.

[0044] For details, see Figure 1-Figure 3 As shown, the endotracheal tube 11 extends from the proximal end to the distal end, and a lumen is formed inside the endotracheal tube 11. The endotracheal tube 11 is provided with a first opening 111 at the distal end and a second opening 112 at the proximal end. An inflatable cuff 113 is provided on the outer wall near the first opening 111. An inflation channel is provided in the tube wall of the endotracheal tube 11. The distal end of the inflation channel is connected to the inflatable cuff 113. The proximal end of the inflation channel is connected to an inflation tube. An inflation nozzle 1131 is provided at the end of the inflation tube. The inflatable cuff 113 can be converted from a contracted state to a filled state by injecting gas into the inflation nozzle 1131, and the inflatable cuff 113 can also be converted from a filled state to a contracted state by extracting gas.

[0045] Furthermore, the guide core 12 extends from the proximal end to the distal end, and is provided with a camera 121 at the distal end, and a connector 122 is provided at the proximal end. The guide core 12 can be inserted into the lumen of the tracheal tube 11 from the second opening 112 at the proximal end, and the camera 122 is positioned near the first opening 111. The camera 122 is used to capture images of the distal end of the tracheal tube. The connector 122 is used to connect to a display device (not shown in the figure) to display the image information collected by the camera 122 on the display device, so that the doctor can observe the image in the airway during the intubation process at any time.

[0046] Furthermore, the tracheal tube kit 10 also includes an auxiliary ventilation connector 15, which is arranged at the second opening 112 of the tracheal tube 11, is sealed and connected, and is provided with a lateral connection channel 151 connected to a ventilator (not shown in the figure). A cavity is arranged inside the auxiliary ventilation connector 15 and is connected to the internal cavity of the tracheal tube 11, so as to temporarily provide active ventilation to the patient during tracheal tube intubation.

[0047] Furthermore, the tracheal tube kit 10 also includes a first positioning device 13, which is used to position the camera 13 in the inner cavity of the tracheal tube 11 near the first opening 111, and to position it along the axial and radial directions of the tracheal tube 11. Preferably, the camera 13 is positioned at the axis of the tracheal tube 11.

[0048] Preferably, Figure 4 As shown, the first positioning device 13 is disposed on the periphery of the camera 122 and can be positioned relative to the inner wall of the tracheal tube 11. Figure 5 and Figure 6 As shown, the first positioning device 13 is a hollow structure, so that gas can still flow between the camera 122 and the inner wall of the tracheal tube 11, so that during the tracheal intubation process, the inner cavity of the tracheal tube 11 can still provide active ventilation for the patient.

[0049] Specifically, Figure 5 and Figure 6 As shown, the first positioning device 13 of the hollow structure includes an inner ring 131, an outer ring 132, and a plurality of support rods 133 disposed between the inner ring 131 and the outer ring 132, and the plurality of support rods 133 are used to fix the inner ring 131 and the outer ring 132. The inner ring 131 is fixedly connected to the outer periphery of the camera 121, and the outer ring 132 can be positioned on the inner wall of the tracheal tube 11 so that the camera 121 is positioned relative to the inner wall of the tracheal tube 11.

[0050] Preferably, the support rod 133 can be deformed by applying a certain pressure, and the outer ring 132 can also be deformed by being squeezed. Preferably, the support rod 133 and the outer ring 132 are made of plastic material, and more preferably TPU material.

[0051] Preferably, the plurality of support rods 133 are arranged at equal intervals and have the same length, so that the camera 121 can be positioned at the axial center of the endotracheal tube 11 .

[0052] Preferably, there are three or more support rods 133, and more preferably four. Too many support rods will hinder gas circulation, and when there are too few support rods, such as two or even one, the position between the inner ring 131 and the outer ring 132 is not stable enough, which in turn affects the positioning stability between the camera 121 and the inner wall of the endotracheal tube 11, and the camera 121 and the guide core 12 are prone to move or shake, affecting the clarity or effect of the airway image captured by the camera 121.

[0053] Furthermore, the visual endotracheal tube kit 10 further includes at least one engaging device, which is disposed on the inner wall of the endotracheal tube 11 and is used to position the outer ring 132, especially along the axial direction of the endotracheal tube 11. Preferably, the engaging device is an annular groove 114 disposed on the inner wall of the endotracheal tube 11, such as Figure 4As shown, when the guide core 12 is inserted into the tracheal tube 11, the outer ring 132 of the first positioning device 13 can be inserted into the annular groove 114, thereby positioning the camera 121 along the axial direction of the tracheal tube 11. Preferably, the outer diameter of the outer ring 132 is larger than the diameter of the annular groove 114, so that the outer ring 132 and the annular groove 114 are pressed and matched, and the positioning of the camera 121 in the inner cavity of the tracheal tube 11 is more stable.

[0054] Preferably, at least the outer surface of the outer ring 132 has an arc-shaped cross section, and the annular groove 114 matches the arc-shaped cross section of the outer ring 132 .

[0055] As an optional embodiment, Figure 8 As shown, the engaging device is a clamping ring, a clamping block 115 or a convex block protruding from the inner wall of the endotracheal tube 11. When the guide core 12 is inserted into the endotracheal tube 11, the clamping ring, the clamping block 115 or the convex block blocks the outer ring 132 of the first positioning device 13, thereby limiting the axial position of the camera 121 in the endotracheal tube 11, so that the position of the camera 121 in the endotracheal tube 11 is fixed during each intubation process, and the image captured in the patient's airway is also consistent.

[0056] Further preferably, Figure 7-Figure 11 As shown, the outer ring 132 and the inner ring 131 are offset along the longitudinal axis of the tracheal tube 11. Preferably, the outer ring 132 is arranged at the front end of the inner ring 131. In this embodiment, since the support rod 133 has a certain elastic deformation, when the guide core 12 is inserted into the tracheal tube 11, when the outer ring 132 of the first positioning device 13 is pushed against the engaging device, it can be further pushed to the front end, so that the support rod 133 is radially expanded and deformed, and the outer ring 132 is expanded to a certain size, so that the outer ring 132 and the inner wall of the tracheal tube 11 are more closely matched, and the positioning of the camera 121 in the tracheal tube 11 is more stable. When the guide core 12 is pulled out, the inner wall of the tracheal tube 11 squeezes the outer ring 132, and the support rod 133 shrinks and deforms in the radial direction, so that the outer ring 132 and the inner wall of the tracheal tube 11 change from a tight fit to a loose fit, which is convenient for the withdrawal of the guide core 12.

[0057] Further preferably, Fig. 9 and Fig.11As shown, in order to improve the degree of deformation of the outer ring 132 when the guide core 12 is inserted and withdrawn, at least one notch 134 is provided on the outer ring 132. More preferably, the notch 134 is provided between adjacent support rods 133. In this way, when the guide core 12 is inserted into the tracheal tube 11, even if the outer diameter of the outer ring 132 is the same as the inner diameter of the tracheal tube 11, or even if it is slightly larger than the inner diameter of the tracheal tube 11, the outer ring 132 can be appropriately contracted and deformed inward due to the presence of the notch 134, which can ensure that the guide core 12 is smoothly inserted into the tracheal tube 11, and when the outer ring 132 reaches the engaging device, it can also apply a force to push the guide core 12 forward, so that the outer ring 132 expands radially, increases the squeezing force with the inner wall of the tracheal tube 11, and thus the camera 121 is more stably positioned in the inner cavity of the tracheal tube 11. When the guide core 12 is pulled out, the outer ring 132 can shrink and deform inward appropriately under the squeezing force of the inner wall of the tracheal tube 11, thereby reducing the squeezing force between the outer ring 132 and the inner surface of the tracheal tube 11, making it easier to pull out the guide core 12.

[0058] Further preferably, Figure 12-Figure 15 As shown, the distal end of the guide core 12 is a bendable section, and the proximal end is provided with an angle adjustment device 123 for adjusting the angle of the bendable section. Preferably, the bendable section includes a snake bone structure 1231.

[0059] Further preferably, Fig.15 As shown, the angle adjustment device 123 also includes an operating component 1234 located at the proximal end, and the operating component 1234 includes a gripping portion 12341, a rotating shaft 12342, a rotating plate 12343 and a toggle element 12344, wherein the rotating shaft 12342 is rotatably arranged on the fixed shell 12341, the rotating plate 12343 is arranged at one end of the rotating shaft 12342 located in the gripping portion 12341, and the toggle element 12344 is arranged at one end of the rotating shaft 12342 extending out of the gripping portion 12341, and the first pulling guide wire 1232 and the second pulling guide wire 1233 are fixed at opposite positions along the circumference of the rotating plate 12343, and the first pulling guide wire 1232 and the second pulling guide wire 1233 are fixed at the front end of the snake bone structure 1231 at intervals along the circumferential direction at the distal end. In this way, the rotating plate 12343 is controlled to rotate back and forth by rotating the toggle element 12344, so that the first pulling guide wire 1232 or the second pulling guide wire 1233 is tightened, and the snake-bone structure 1231 at the distal end of the guide core 12 is controlled to bend at a certain angle.

[0060] Further preferably, Figure 3 , Figure 7 and Fig.14As shown, the visual tracheal tube kit 10 further includes a second positioning device 14, which is disposed at the proximal end of the tracheal tube 11 and is used to position the guide core 12 at the proximal end with the tracheal tube 11, including positioning along the axial and radial directions of the tracheal tube 11. Preferably, the second positioning device 14 includes a connector 141 that can be tightly matched with the guide core 12 and an end cap 142 that is threadedly matched with the connector 141. Preferably, the second positioning device 14 is disposed at the rear end of the auxiliary ventilation connector 15, and the auxiliary ventilation connector 15 is pushed against the second opening 112 of the tracheal tube 11 for positioning. By means of the first positioning device 13 at the distal end and the second positioning device 14 at the proximal end, the guide core 12 and the camera 121 can be firmly positioned in the inner cavity of the tracheal tube 11, especially in the center of the inner cavity, to avoid relative displacement of the guide core 12 with respect to the tracheal tube 11. The camera 121 can capture images more clearly and accurately, and can also avoid contact with the inner wall of the tracheal tube 11, which would affect the active ventilation effect of the patient during the operation.

[0061] The present invention is not limited to the above-mentioned embodiments. In the case of no conflict, the above-mentioned embodiments can be recombined to form new embodiments, all of which belong to the protection scope of the present invention. The present invention is not limited to the specific structures and processes described above and shown in the figures. For the sake of simplicity, a detailed description of the known methods is omitted here. In the above-mentioned embodiments, several specific steps are described and shown as examples. However, the method process of the present invention is not limited to the specific steps described and shown. Those skilled in the art can make various changes, modifications and additions, or change the order between the steps after understanding the spirit of the present invention.

[0062] It should also be noted that the exemplary embodiments mentioned in the present invention describe some methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the above steps, that is, the steps can be performed in the order mentioned in the embodiments, or in a different order from the embodiments, or several steps can be performed simultaneously.

[0063] The above is only a specific implementation of the present invention. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working process of the system, module and unit described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here. It should be understood that the protection scope of the present invention is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be covered within the protection scope of the present invention.

Claims

1. A visual endotracheal tube kit, characterized in that: Comprising an endotracheal tube and a guide core, wherein: The tracheal tube extends from the proximal end to the distal end and forms a lumen inside. The tracheal tube is provided with a first opening at the distal end and a second opening at the proximal end. An inflatable cuff is provided on the outer wall near the first opening. A camera is provided at the distal end of the guide core, and the guide core can be inserted into the lumen of the tracheal tube from the second opening at the proximal end, and the camera is placed close to the first opening, and the camera is used to capture an image of the distal end of the tracheal tube; It also includes a first positioning device, which is used to position the camera near the first opening and to position the camera in the inner cavity of the tracheal tube from the axial and radial directions. The first positioning device is arranged at the outer periphery of the camera and is positioned with the inner wall of the tracheal tube. The first positioning device is a hollow structure. The first positioning device includes an inner ring, an outer ring, and a plurality of support rods arranged between the inner ring and the outer ring. The plurality of support rods are used to fix the inner ring and the outer ring. The inner ring is fixedly connected to the outer periphery of the camera. The outer ring can be positioned on the inner wall of the tracheal tube so that the camera is positioned relative to the inner wall of the tracheal tube. The outer ring and the inner ring are offset along the longitudinal axis of the tracheal tube. The outer ring is arranged at the front end of the inner ring. The outer ring is provided with at least one notch. It also includes at least one engaging device, which is arranged on the inner wall of the tracheal tube and is used to position the outer ring.

2. The visual endotracheal tube kit according to claim 1, characterized in that: The engaging device comprises at least one of an annular groove, a clamping ring, a clamping block or a protrusion arranged on the inner wall of the tracheal tube.

3. The visual endotracheal tube kit according to claim 2, characterized in that: At least the outer surface of the outer ring has an arc-shaped cross section, and the annular groove matches the arc-shaped cross section of the outer ring.

4. The visual endotracheal tube kit according to any one of claims 1 to 2, characterized in that: The distal end of the guide core is a bendable section, and the proximal end is provided with an angle adjustment device for adjusting the angle of the bendable section.

5. The visual endotracheal tube kit according to any one of claims 1 to 2, characterized in that: The second opening at the proximal end of the endotracheal tube is provided with an auxiliary ventilation connector for actively ventilating the patient during the insertion of the endotracheal tube.

6. The visual endotracheal tube kit according to any one of claims 1 to 2, characterized in that: Also included is a second positioning device, which is disposed at the proximal end of the endotracheal tube and is used to position the guide core proximally with the endotracheal tube.

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