CN114177459A

CN114177459A - Trachea cannula auxiliary structure

Info

Publication number: CN114177459A
Application number: CN202111430632.8A
Authority: CN
Inventors: 赵国栋; 翟中云; 陈涵; 刘万里
Original assignee: Chongqing Anasheng Bioengineering Co ltd
Current assignee: Guangdong Anesthesia Medicine Technology Co ltd
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2022-03-15
Also published as: WO2023093901A1

Abstract

The invention discloses an auxiliary structure of a trachea cannula, which comprises a catheter and a video device. The catheter comprises a shape fixing section, a snake bone section and a video section which are connected in sequence. The signal line of the vision device is connected to the image sensor and is located within the catheter and extends from the distal end of the catheter to the proximal end of the catheter. The form fixed section is connected with a control device, and the control device is connected with a first control rope and a second control rope in a driving mode. The first control rope is connected with the snake bone section, and the second control rope is connected with the snake bone section. The first control rope is sleeved with the first protection pipe and can move relative to the first protection pipe along the length direction of the first protection pipe; the second control rope has cup jointed the second protection tube, and the second control rope can move along the length direction of second protection tube for the second protection tube. The snake bone section is sleeved with a metal braided sleeve which is arranged around the periphery of the snake bone section. It can guide the trachea to penetrate the throat of a human body efficiently and complete butt joint, and avoids repeatedly stabbing throat tissues.

Description

Trachea cannula auxiliary structure

Technical Field

The invention relates to the technical field of trachea cannula equipment, in particular to a trachea cannula auxiliary structure.

Background

The clinical need frequently uses the auxiliary structure of the trachea cannula to insert the trachea into the throat of the human body so as to provide oxygen to the lungs of the human body through a respirator. At present, no visual trachea cannula auxiliary structure is generally inserted into a patient body in a blind mode, and due to the fact that the throat part cannot be peeped during operation, an operator can only conduct blind insertion through personal hand feeling and experience. Thus, the trachea may be inserted incorrectly or not sealed well, which may affect the oxygen supply effect. Moreover, if the operator cannot accurately guide the trachea to the throat part for many times, the tissues of the throat of the human body can be abraded, and the rescue opportunity can be delayed.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide an auxiliary structure of a tracheal intubation, which can efficiently guide a trachea to penetrate into the throat of a human body and complete butt joint, and avoids repeatedly stabbing throat tissues.

The purpose of the invention is realized by adopting the following technical scheme:

an auxiliary structure of a trachea cannula comprises a catheter and a video device,

the catheter comprises a shape fixing section, a snake bone section and a video section which are connected in sequence;

the video device is arranged in the video segment;

the visual device is provided with an image sensor, and a signal wire of the visual device is connected with the image sensor, is positioned in the catheter and extends from the distal end of the catheter to the proximal end of the catheter;

the shape fixing section is connected with a control device at the near end far away from the snake bone section, and the control device is connected with a first control rope and a second control rope which are positioned in the catheter and extend to the far end of the catheter in a driving way;

the far end of the first control rope far away from the control device is connected with the snake bone segment, and the far end of the second control rope far away from the control device is connected with the snake bone segment, so that the first control rope and the second control rope can drive the snake bone segment to bend and reset;

the first control rope is sleeved with a first protection pipe extending along the length direction of the first control rope, and can move along the length direction of the first protection pipe relative to the first protection pipe; the second control rope is sleeved with a second protection pipe extending along the length direction of the second control rope, and can move relative to the second protection pipe along the length direction of the second protection pipe;

the snake bone section is sleeved with a metal braided sleeve which is arranged around the periphery of the snake bone section.

Furthermore, a soft protective pipe is sleeved on the periphery of the metal braided sleeve; the first protection pipe and the second protection pipe are both metal spring pipes.

Furthermore, the catheter also comprises an adapter sleeve, the shape fixing section, the adapter sleeve, the snake bone section and the image section are sequentially arranged along the length direction of the catheter, the proximal end of the adapter sleeve is inserted into the shape fixing section, and the distal end of the adapter sleeve is inserted into the tube wall of the snake bone section.

Further, the joint of the tube wall of the snake bone segment close to the near end of the adapter sleeve and the adapter sleeve is fixed through a laser welding technology; the joint of the metal braided sleeve and the near end of the metal braided sleeve, which is close to the adapter sleeve, is fixed by a laser welding technology; the soft protective tube is fixed on the adapter sleeve and the shape fixing section through a laser welding technology at the near end close to the adapter sleeve.

Furthermore, the outer curved surface wall of the adapter sleeve forms a layered structure along the length direction thereof, so that a first outer diameter pipe wall, a second outer diameter pipe wall and a third outer diameter pipe wall of the adapter sleeve are arranged at intervals along the axial direction of the adapter sleeve, and the first outer diameter pipe wall, the second outer diameter pipe wall and the third outer diameter pipe wall are sequentially enlarged; the pipe wall of the snake bone section close to the near end of the adapter sleeve is sleeved on the periphery of the pipe wall of the first outer diameter; the metal braided sleeve is sleeved on the periphery of the second outer diameter pipe wall near the near end of the adapter sleeve; the soft protective pipe is sleeved on the periphery of the pipe wall of the third outer diameter near the near end of the adapter sleeve, and the outer diameter of the soft protective pipe is equal to that of the shape fixing section;

the outer curved surface wall of the video segment forms a layered structure along the length direction of the video segment, so that a fourth outer diameter pipe wall, a fifth outer diameter pipe wall and a sixth outer diameter pipe wall of the video segment are arranged at intervals along the axial direction of the video segment, and the fourth outer diameter pipe wall, the fifth outer diameter pipe wall and the sixth outer diameter pipe wall are sequentially increased; the pipe wall of the snake bone section close to the far end of the video section is sleeved on the periphery of the pipe wall of the fourth outer diameter; the far end of the metal braided sleeve, which is close to the video section, is sleeved on the periphery of the fifth outer diameter pipe wall; the far end of the soft protective pipe close to the visual image section is sleeved on the periphery of the pipe wall with the sixth outer diameter; and the outer diameter of the soft protective tube is equal to the outer diameter of the video segment;

the pipe wall of the snake bone section close to the far end of the video section is fixed with the connection part of the video section through a laser welding technology; the metal braided sleeve is fixed at the joint of the far end close to the video section and the video section by a laser welding technology; and the joint of the far end of the soft protective tube close to the video segment and the video segment is fixed by a laser welding technology.

Furthermore, the first control rope and the second control rope are both steel wire ropes, the far end of the first control rope is fixedly connected with the inner side of the snake bone section, the far end of the second control rope is fixedly connected with the inner side of the snake bone section, and the far end of the first control rope and the far end of the second control rope are respectively connected to two opposite sides of the snake bone section.

Further, the far end of the visual image section is blocked by the light-transmitting plate to form a sealing structure.

Further, the control device comprises a motor and a turntable in driving connection with the motor, wherein the proximal end of the first control rope and the proximal end of the second control rope are respectively and fixedly connected to two opposite sides of the turntable, so that when the turntable rotates, one of the first control rope and the second control rope is released, and the other control rope contracts, so that the snake bone segment is bent or reset.

Furthermore, the shape fixing section and the outer curved surface wall of the image viewing section are both made of stainless steel materials.

Further, a display is connected to the proximal end of the catheter, and a signal line of the video device is connected with the display.

Compared with the prior art, the invention has the beneficial effects that:

1. the visual device is arranged on the visual section of the catheter, so that the acquired signals are transmitted to the display at the near end of the catheter through the image sensor of the visual device, doctors can know throat tissues and complete intubation actions conveniently, and a trachea sleeved outside the catheter is connected to the throat of a human body; so as to avoid tissue damage caused by blind insertion and avoid the phenomenon of delaying treatment time.

2. And through the telescopic matching of the first control rope and the second control rope (namely, one control rope is pulled and the other control rope is released), the snake bone segment of the catheter can be pulled and released, so that the bending and resetting of the snake bone segment of the catheter are realized.

3. Moreover, the first protection pipe and the second protection pipe are arranged in a relatively static state relative to the signal wire, namely, the first control rope stretches and retracts and the second control rope stretches and retracts, so that the signal wire is not abraded any more, and the service life of the signal wire is prolonged.

4. Furthermore, the metal braided sleeve can be used for flexibly contacting and blocking the edge of the snake bone section, so that the snake bone section is prevented from being exposed due to being too sharp, and further the throat tissues of a human body are scratched.

Drawings

FIG. 1 is a schematic structural view of an auxiliary structure for endotracheal intubation according to the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a partial enlarged view of FIG. 1 at B;

FIG. 4 is a partial cross-sectional view of FIG. 1;

FIG. 5 is a partial cross-sectional view of FIG. 1;

FIG. 6 is an enlarged view of a portion of FIG. 5 at C, with the weld streaks not shown;

FIG. 7 is the effect diagram of FIG. 6 after welding stripes;

FIG. 8 is an enlarged view of a portion of FIG. 5 at D, with the weld streaks not shown;

FIG. 9 is the effect diagram of FIG. 8 after welding stripes;

FIG. 10 is a schematic structural view of a snake bone segment;

fig. 11 is a front elevational view, in full section, of fig. 10.

In the figure: 1. a conduit; 11. a form fixing section; 12. an adapter sleeve; 121. a first outer diameter tube wall; 122. a second outer diameter tube wall; 123. a third outer diameter tube wall; 13. a snake bone segment; 14. a video segment; 141. a fourth outer diameter tube wall; 142. a fifth outer diameter tube wall; 143. a sixth outer diameter tube wall; 144. a light-transmitting plate; 2. a video device; 3. a control device; 31. a motor; 32. a turntable; 4. a first control cord; 5. a second control cord; 6. a first protective tube; 7. a second protection tube; 8. a metal braided sleeve; 9. a soft protective tube; 10. a display.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. As used herein, "vertical," "horizontal," "left," "right," and similar expressions are for purposes of illustration only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Fig. 1-3 show an auxiliary structure for endotracheal intubation according to a preferred embodiment of the present invention, which includes a guide tube 1 and a vision device 2. The catheter 1 comprises a shape fixing section 11, an adapter sleeve 12, a snake bone section 13 (see fig. 10 and 11 in detail) and a vision section 14 which are connected in sequence.

Referring to fig. 2, the viewing device 2 is mounted within the viewing segment 14. The visualization device 2 has an image sensor (not shown in the figure), and the signal line of the visualization device 2 is connected with the image sensor and is positioned in the catheter 1 and extends from the distal end of the catheter 1 to the proximal end of the catheter 1. In this way, the image sensor can transmit the collected signals to the self-contained display 10 of the auxiliary structure for endotracheal intubation or an external independent display through the signal line. At this time, the doctor can not only understand the specific tissue structure of the throat, but also solve the blind insertion of the trachea.

Referring to fig. 1 and 4, a control device 3 is connected to a proximal end of the morphological fixation segment 11, which is far away from the snake bone segment 13, and the control device 3 is drivingly connected to a first control string 4 and a second control string 5 which are located inside the catheter 1 and extend towards the distal end of the catheter 1. Specifically, referring to fig. 2, the far end of the first control rope 4 away from the control device 3 is connected to the snake bone segment 13, and the far end of the second control rope 5 away from the control device 3 is connected to the snake bone segment 13, so that the first control rope 4 and the second control rope 5 can drive the snake bone segment 13 to bend and reposition, and the snake bone segment 13 can be linked with the vision segment 14 to bend and reposition. Therefore, the trachea is sleeved outside the catheter 1, the end part of the trachea can be bent and advanced along with the visual image section 14, and therefore a doctor can conveniently and efficiently complete the inserting work of the trachea. The snake bone section 13 is already applied to other existing medical instruments, namely, the snake bone section 13 can be selected according to existing products.

More importantly, referring to fig. 3, the first control rope 4 is sleeved with a first protection pipe 6 extending along the length direction of the first control rope 4, and the first control rope 4 can move relative to the first protection pipe 6 along the length direction of the first protection pipe 6; the second control string 5 is coupled to a second protection pipe 7 extending in the longitudinal direction thereof, and the second control string 5 is movable in the longitudinal direction of the second protection pipe 7 with respect to the second protection pipe 7. With this arrangement, the first control cord 4 and the second control cord 5 are isolated from each other, and therefore, neither friction is applied to the signal wire, thereby preventing the signal wire from being scratched by the first control cord 4 or the second control cord 5. Moreover, the first protection tube 6 can prevent the first control rope 4 from knotting, and the second protection tube 7 can prevent the second control rope 5 from knotting, so that the catheter 1 can not be knotted even if being in a bending state when being stored, and further cannot work normally due to the fact that the first control rope 4 or the second control rope 5 are knotted.

More importantly, referring to fig. 5 and 6, the snake bone segment 13 is sleeved with the metal braided sleeve 8 which is arranged around the snake bone segment 13. It will be appreciated that the metal braided sleeve 8 is bendable to accommodate bending and reduction of the snake bone segment 13. Moreover, the metal braided sleeve 8 can flexibly contact and separate the edge of the snake bone section 13, so that the snake bone section 13 is prevented from being exposed due to being too sharp, and further the throat tissues of a human body are prevented from being scratched.

When the device is used, the trachea is sleeved outside the catheter 1, the far end of the trachea, which is used for extending into the throat of a human body, is provided with an air bag generally, and the air bag is used for sealing the respiratory tract of the human body), then a doctor inserts the catheter 1 into the respiratory tract of the human body along the throat of the human body, when the video device 2 touches or almost touches the tissues of the throat of the human body, the far end of the catheter 1 is driven to be properly bent through the control device 3, so that the trachea is driven to be smoothly inserted into the throat of the human body and sealed and compressed, and then breathing equipment is started in time to replace the lung of the human body for oxygen supply. After the intubation is finished, the catheter 1 can be pulled out of the trachea.

Obviously, the video device 2 is installed on the video section 14 of the catheter 1, so that the image sensor of the video device 2 transmits the acquired signal to the display 10 at the proximal end of the catheter 1, thereby facilitating the understanding of the throat tissue and the completion of intubation actions by the doctor, and further connecting the trachea sleeved outside the catheter 1 to the throat of the human body; so as to avoid tissue damage caused by blind insertion and avoid the phenomenon of delaying treatment time. And, through the telescopic cooperation of the first control rope 4 and the second control rope 5 (i.e. one is pulled and the other is released), the snake bone segment 13 of the catheter 1 can be pulled and released, thereby realizing the bending and resetting of the snake bone segment 13 of the catheter 1. In addition, the first protection pipe 6 and the second protection pipe 7 are arranged in a relatively static state relative to the signal line, namely, the signal line is not abraded any more in the process of stretching the first control rope 4 and stretching the second control rope 5, so that the service life of the signal line is prolonged. Furthermore, the metal braided sleeve 8 can flexibly contact and separate the edge of the snake bone section 13, so that the snake bone section 13 is prevented from being exposed due to being too sharp, and further the throat tissues of a human body are scratched.

Preferably, referring to fig. 6, in order to prevent the metal braided sleeve 8 from being exposed, a soft protective tube 9 is sleeved on the periphery of the metal braided sleeve 8, wherein the soft protective tube 9 is preferably made of a rubber material; the soft protective pipe 9 is additionally arranged, namely the soft protective pipe 9 is contacted with the throat of a human body, so that the working difficulty and the risk coefficient are greatly reduced, and the snake bone section 13 can be more effectively prevented from scratching the throat of the human body.

Preferably, the first protection tube 6 and the second protection tube 7 are both metal spring tubes. Set up like this, first protective tube 6 and second protective tube 7 all have certain rigidity to make first protective tube 6 and second protective tube 7 can not become the suffocation, in order to guarantee the work that first control rope 4 and second control rope 5 can be normal. In addition, the metal spring tube has a small friction coefficient, so that the friction force of the first control rope 4 and the second control rope 5 during sliding can be reduced, and the first control rope 4 and the second control rope 5 can control the snake bone section 13 smoothly and stably.

Referring to fig. 1, the form fixing section 11, the adapter sleeve 12, the snake bone section 13 and the vision section 14 are sequentially arranged along the length direction of the catheter 1, and referring to fig. 6, in order to improve the connection stability of the catheter 1, the proximal end of the adapter sleeve 12 is inserted into the form fixing section 11, and the distal end of the adapter sleeve 12 is inserted into the tube wall of the snake bone section 13.

Referring to FIG. 7, the tube wall of the snake bone segment 13 near the proximal end of the adapter sleeve 12 is secured to the adapter sleeve 12 by laser welding and forms a first weld stripe H1. The metal braided sleeve 8 is secured by laser welding near the junction of the proximal end of the adapter sleeve 12 and the metal braided sleeve 8, and a second weld stripe H2 is formed. The proximal end of the flexible shield tube 9 near the adapter sleeve 12 is fixed to the adapter sleeve 12 and the form-fixing segment 11 by a laser welding technique, and a third welding stripe H3 is formed. The welding technology is used for welding, so that high-temperature hot melting of all components can be avoided as much as possible, and the welding efficiency is high.

Referring to fig. 6, the outer curved wall of the adapter sleeve 12 is layered along its length such that the first outer diameter tube wall 121, the second outer diameter tube wall 122 and the third outer diameter tube wall 123 of the adapter sleeve 12 are spaced along the axial direction of the adapter sleeve 12. The first outer diameter pipe wall 121, the second outer diameter pipe wall 122 and the third outer diameter pipe wall 123 are sequentially enlarged. The tube wall of the snake bone section 13 close to the near end of the adapter sleeve 12 is sleeved on the periphery of the tube wall 121 with the first outer diameter; the metal braided sleeve 8 is sleeved on the periphery of the second outer diameter pipe wall 122 near the near end of the adapter sleeve 12; the soft protection tube 9 is sleeved on the periphery of the third outer diameter tube wall 123 near the proximal end of the adapter sleeve 12, and the outer diameter of the soft protection tube 9 is equal to the outer diameter of the form fixing section 11. Set up like this, not only make switching sleeve 12 weave sleeve 8, soft protecting tube 9 with snake bone section 13, metal respectively when being connected inseparabler, make snake bone section 13, metal moreover weave the relation that sleeve 8 and soft protecting tube 9 successive layer cup jointed comparatively inseparabler, and then make the external diameter of soft protecting tube 9 equal with the external diameter of form fixed segment 11 to do benefit to after the grafting trachea, be convenient for take catheter 1 out from the trachea.

Referring to fig. 8, the outer curved wall of the view segment 14 is layered along its length such that the fourth, fifth and sixth

outer diameter walls

141, 142 and 143 of the view segment 14 are spaced apart along the axial direction of the view segment 14. The fourth outer diameter tube wall 141, the fifth outer diameter tube wall 142, and the sixth outer diameter tube wall 143 are enlarged in this order. The pipe wall of the snake bone section 13 close to the far end of the video section 14 is sleeved on the periphery of the fourth outer diameter pipe wall 141; the far end of the metal braided sleeve 8 close to the visual image section 14 is sleeved on the periphery of the fifth outer diameter pipe wall 142; the far end of the soft protective tube 9 close to the visual image section 14 is sleeved on the periphery of the sixth outer diameter tube wall 143; and the outer diameter of the soft protective tube 9 is equal to the outer diameter of the visual image section 14. In the same way, set up like this, it is inseparabler not only to make video section 14 weave sleeve 8, soft protecting tube 9 with snake bone section 13, metal respectively when being connected, and it is comparatively inseparabler to make relation that snake bone section 13, metal woven sleeve 8 and soft protecting tube 9 successive layer cup jointed moreover, and then makes the external diameter of soft protecting tube 9 equal with video section 14's external diameter to do benefit to after the grafting trachea, be convenient for take catheter 1 out from the trachea.

Referring to fig. 9, the connection between the tube wall of the snake bone segment 13 near the distal end of the visual image segment 14 and the visual image segment 14 is fixed by laser welding technique, and a fourth welding stripe H4 is formed; the joint of the far end of the metal braided sleeve 8 close to the video segment 14 and the video segment 14 is fixed by laser welding technology, and a fifth welding stripe H5 is formed; the soft protective tube 9 is fixed by laser welding technique near the connection between the distal end of the visual image section 14 and the visual image section 14, and a sixth welding stripe H6 is formed. The welding is carried out by the laser welding technology, so that high-temperature hot melting of each component can be avoided as much as possible, and the welding efficiency is higher.

It is understood that the first control rope 4 and the second control rope 5 may be hemp ropes or the like, and in this embodiment, in order to improve the service life of the first control rope 4 and the second control rope 5, it is preferable that the first control rope 4 and the second control rope 5 are both steel ropes, the distal end of the first control rope 4 is fixedly connected with the inner side of the snake bone section 13, the distal end of the second control rope 5 is fixedly connected with the inner side of the snake bone section 13, and the distal end of the first control rope 4 and the distal end of the second control rope 5 are respectively connected to two opposite sides of the snake bone section 13.

Referring to fig. 2, to avoid bacteria in the viewing segment 14 from infecting the respiratory tract of the human body, the distal end of the viewing segment 14 is blocked by the transparent plate 144 to form a seal structure.

Referring to fig. 4, the control device 3 includes a motor 31, a rotating disc 32 drivingly connected to the motor 31, and a proximal end of the first control cord 4 and a proximal end of the second control cord 5 are fixedly connected to opposite sides of the rotating disc 32, respectively, such that when the rotating disc 32 rotates, one of the first control cord 4 and the second control cord 5 is released and the other one is retracted to bend or reposition the snake bone segment 13. With this arrangement, the first control cord 4 and the second control cord 5 are constant in overall length, and in operation, when the dial 32 is rotated by, for example, 180 °, the proximal end of the first control cord 4 is moved in a circular oscillating motion to pull the snake bone segment 13, so that the snake bone segment 13 is bent, and simultaneously, the proximal end of the second control cord 5 is moved in a synchronous circular oscillating motion to allow the distal end of the second control cord 5 to be pulled by the snake bone segment 13 (and in the case of the first protection tube 6 and the second protection tube 7, the first control cord 4 and the second control cord 5 are moved in a telescopic motion). When resetting, the dial 32 needs to be reset to the initial position, the dial 32 rotates reversely, for example, 180 °, that is, the proximal end of the second control cord 5 makes a circular swinging motion, so as to pull the snake bone segment 13, so that the snake bone segment 13 can start resetting, and synchronously, the proximal end of the first control cord 4 is pulled by the snake bone segment 13 to make a synchronous circular swinging motion, so as to be reset, so as to reset the distal end of the first control cord 4. In this way, the movement of the snake bone segment 13 drives the bending and resetting of the vision device 2, that is, the bending and resetting of the trachea, so as to complete the intubation of the trachea as soon as possible. It is understood that as an alternative arrangement of the control device 3, the first control cord 4 and the second control cord 5 may be controlled by two motors 31; as an alternative arrangement of the control device 3, the control device 3 may be a manual rotary dial 32 for controlling the first control rope 4 and the second control rope 5, and so on.

Preferably, the shape fixing section 11 and the outer curved wall of the image viewing section 14 are made of hard metal material, such as stainless steel or copper material. In the present embodiment, the entire shape fixing section 11 and the entire image viewing section 14 are made of stainless steel.

Preferably, a display 10 is connected to the proximal end of the catheter 1, and the signal line of the visualization device 2 is connected to the display 10. It is understood that the display 10 can be installed in the operating room, and the signal line can be connected to it, and in this embodiment, it is connected to the catheter 1, i.e. the present auxiliary structure for endotracheal intubation is a complete device and has a portable function.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims

1. Trachea cannula auxiliary structure, including pipe (1) and video device (2), its characterized in that:

the catheter (1) comprises a shape fixing section (11), a snake bone section (13) and a video section (14) which are connected in sequence;

the vision device (2) is arranged in the vision section (14);

the visual device (2) is provided with an image sensor, and a signal wire of the visual device (2) is connected with the image sensor, is positioned in the catheter (1), and extends from the far end of the catheter (1) to the near end of the catheter (1);

the shape fixing section (11) is connected with a control device (3) at the near end far away from the snake bone section (13), and the control device (3) is connected with a first control rope (4) and a second control rope (5) which are positioned in the catheter (1) and extend towards the far end of the catheter (1) in a driving way;

the far end of the first control rope (4) far away from the control device (3) is connected with the snake bone section (13), and the far end of the second control rope (5) far away from the control device (3) is connected with the snake bone section (13), so that the first control rope (4) and the second control rope (5) can drive the snake bone section (13) to bend and reset;

the first control rope (4) is sleeved with a first protection pipe (6) extending along the length direction of the first control rope, and the first control rope (4) can move along the length direction of the first protection pipe (6) relative to the first protection pipe (6); the second control rope (5) is sleeved with a second protection pipe (7) extending along the length direction of the second control rope, and the second control rope (5) can move along the length direction of the second protection pipe (7) relative to the second protection pipe (7);

the snake bone section (13) is sleeved with a metal braided sleeve (8) which is arranged around the periphery of the snake bone section (13).

2. An endotracheal intubation assistance structure according to claim 1, wherein: a soft protective pipe (9) is sleeved on the periphery of the metal braided sleeve (8); the first protection pipe (6) and the second protection pipe (7) are both metal spring pipes.

3. An endotracheal intubation assistance structure according to claim 2, wherein: the catheter (1) further comprises an adapter sleeve (12), the shape fixing section (11), the adapter sleeve (12), the snake bone section (13) and the image section (14) are sequentially arranged along the length direction of the catheter (1), the near end of the adapter sleeve (12) is inserted into the shape fixing section (11), and the far end of the adapter sleeve (12) is inserted into the tube wall of the snake bone section (13).

4. An endotracheal intubation assistance structure according to claim 3, wherein: the connection part of the tube wall of the snake bone section (13) close to the near end of the adapter sleeve (12) and the adapter sleeve (12) is fixed through a laser welding technology; the joint of the metal braided sleeve (8) and the near end close to the adapter sleeve (12) is fixed by laser welding technology; the soft protective tube (9) is fixed on the adapter sleeve (12) and the form fixing section (11) through the laser welding technology at the near end close to the adapter sleeve (12).

5. An endotracheal intubation assistance structure according to claim 4, wherein: the outer curved surface wall of the adapter sleeve (12) forms a layered structure along the length direction thereof, so that a first outer diameter pipe wall (121), a second outer diameter pipe wall (122) and a third outer diameter pipe wall (123) of the adapter sleeve (12) are arranged at intervals along the axial direction of the adapter sleeve (12), and the first outer diameter pipe wall (121), the second outer diameter pipe wall (122) and the third outer diameter pipe wall (123) are sequentially increased; the pipe wall of the snake bone section (13) close to the near end of the adapter sleeve (12) is sleeved on the periphery of the pipe wall (121) with the first outer diameter; the metal braided sleeve (8) is sleeved on the periphery of the second outer diameter pipe wall (122) close to the near end of the adapter sleeve (12); the soft protective pipe (9) is sleeved on the periphery of the third outer diameter pipe wall (123) near the near end of the adapter sleeve (12), and the outer diameter of the soft protective pipe (9) is equal to that of the shape fixing section (11);

the outer curved wall of the video segment (14) forms a layered structure along the length direction thereof, so that a fourth outer diameter pipe wall (141), a fifth outer diameter pipe wall (142) and a sixth outer diameter pipe wall (143) of the video segment (14) are arranged at intervals along the axial direction of the video segment (14), and the fourth outer diameter pipe wall (141), the fifth outer diameter pipe wall (142) and the sixth outer diameter pipe wall (143) are sequentially increased; the pipe wall of the snake bone section (13) close to the far end of the video section (14) is sleeved on the periphery of the pipe wall (141) with the fourth outer diameter; the far end of the metal braided sleeve (8) close to the visual image section (14) is sleeved on the periphery of the fifth outer diameter pipe wall (142); the far end of the soft protective tube (9) close to the visual image section (14) is sleeved on the periphery of the sixth outer diameter tube wall (143); and the outer diameter of the soft protective tube (9) is equal to the outer diameter of the visual image section (14);

the pipe wall of the snake bone segment (13) close to the far end of the visual image segment (14) is fixed with the connection part of the visual image segment (14) through a laser welding technology; the joint of the far end of the metal braided sleeve (8) close to the video segment (14) and the video segment (14) is fixed by laser welding technology; the soft protective tube (9) is fixed at the joint of the far end close to the visual image section (14) and the visual image section (14) by a laser welding technology.

6. An endotracheal intubation assistance structure according to claim 1, wherein: the first control rope (4) and the second control rope (5) are both steel wire ropes, the far end of the first control rope (4) is fixedly connected with the inner side of the snake bone section (13), the far end of the second control rope (5) is fixedly connected with the inner side of the snake bone section (13), and the far end of the first control rope (4) and the far end of the second control rope (5) are respectively connected to two opposite sides of the snake bone section (13).

7. An endotracheal intubation assistance structure according to claim 1, wherein: the far end of the visual image section (14) is sealed by a light-transmitting plate (144) to form a sealing structure.

8. An endotracheal intubation assistance structure according to claim 1, wherein: the control device (3) comprises a motor (31) and a rotary table (32) in driving connection with the motor (31), wherein the near end of the first control rope (4) and the near end of the second control rope (5) are fixedly connected to two opposite sides of the rotary table (32) respectively, so that when the rotary table (32) rotates, one of the first control rope (4) and the second control rope (5) is released, and the other one of the first control rope and the second control rope contracts, so that the snake bone section (13) is bent or reset.

9. An endotracheal intubation assistance structure according to claim 1, wherein: the shape fixing section (11) and the outer curved surface wall of the image viewing section (14) are both made of stainless steel materials.

10. An endotracheal intubation assistance structure according to claim 1, wherein: the near end of the catheter (1) is connected with a display (10), and a signal wire of the video device (2) is connected with the display (10).