Electronic endoscope snake bone structure

Abstract

The utility model provides a snake bone structure of an electronic endoscope. The snake bone structure comprises a first section, a front section, a middle section, a rear section and a tail section which are sequentially connected, the front section, the middle section and the rear section are all bendable sections, the bending angle of the front section and the bending angle of the middle section are larger than that of the rear section, the front section, the middle section and the rear section all comprise a plurality of movable sections of the same structure, one end of each movable section is provided with a C-shaped arm, and the other end of each movable section is provided with a C-shaped groove. All the movable joints are connected by installing the C-shaped arms in the C-shaped grooves, and all the sections are bent through rotation of the C-shaped arms in the C-shaped grooves. Compared with the prior art, the snake bone structure of the endoscope does not need to customize steel pipes with uncommon specifications, is good in adaptability, can save the assembly size, can freely adjust the bending angle and the arc size of the snake bone, and meets the requirements for examination and treatment of different parts.

Description

TECHNICAL FIELD

[0001] The utility model belongs to electronic endoscope technical field, especially relate to a electronic endoscope snake bone structure. BACKGROUND

[0002] An endoscope is a detection instrument commonly used in modern medical diagnosis and treatment, which can enter the stomach through the oral cavity or enter the body through other natural orifices, and can also enter the human body through a small incision made by surgery. The endoscope is provided with an insertion part inserted into a living body or a pipe, and a controllable bending part is provided on the front end side of the insertion part, which is commonly known as a snake bone tube. The snake bone tube can be bent by the operation of the operation device provided in the operation part. Therefore, in the endoscope with the snake bone tube, the direction of the observation part provided in the front end part can be directed to the desired direction by the operation device. The front end part of the snake bone tube is provided with a front end piece, and an image sensor is installed in the front end piece. Doctors can see the lesions that X-rays cannot display through the image sensor, which is very useful for diagnosing diseases.

[0003] The bending performance of the electronic mirror snake bone is excellent, which is an important performance of the endoscope. Excellent performance can obtain multiple view angle images of the lesion tissue front, side and top during use, and better and flexible synchronous treatment.

[0004] However, the existing endoscope snake bone is usually not flexible enough, and the structure is complex and difficult to assemble. UTILITY MODEL CONTENT

[0005] The utility model discloses an electronic endoscope snake bone structure, which has simple structure, flexible bending and easy assembly.

[0006] Technical scheme: in order to achieve the above-mentioned invention purpose, the utility model adopts the following technical scheme:

[0007] An electronic endoscope snake bone structure comprises a first segment, a front segment, a middle segment, a rear segment and a last segment connected in sequence.

[0008] The front segment, the middle segment and the rear segment are all bendable segments, and the bending angle of the front segment and the middle segment is greater than that of the rear segment, the front segment, the middle segment and the rear segment all comprise a plurality of movable segments with the same structure, one end of the movable segment is provided with a C-shaped arm, and the other end is provided with a C-shaped groove, the movable segments are connected by being installed in the C-shaped groove through the C-shaped arm, and the segments are bent by rotating in the C-shaped groove through the C-shaped arm.

[0009] As a specific embodiment, the first section is provided with a cutting group at the end away from the front section, the cutting group comprises a first cutting and a second cutting, a front end piece is connected in the end of the first section away from the front section, the front end piece is provided with an image sensor and an instrument channel tube, the first cutting corresponds to the position of the image sensor cable, and the second cutting corresponds to the position of the instrument channel tube.

[0010] As a specific embodiment:

[0011] In the front section, the inclination angle of the connecting platform of adjacent movable sections is 8.5°±2°, the length of the movable section is 2.2±0.2mm, and the number of nodes is 16±4.

[0012] In the middle section, the inclination angle of the connecting platform of adjacent movable sections is 7.5°±1°, the length of the movable section is 2.5±0.2mm, and the number of nodes is 4±2.

[0013] In the rear section, the inclination angle of the connecting platform of adjacent movable sections is 5°±1°, the length of the movable section is 3.2±0.2mm, and the number of nodes is 4±2.

[0014] As a specific embodiment, two C-shaped arms are symmetrically arranged at one end of the movable section, and two C-shaped grooves are also symmetrically arranged at the other end of the movable section.

[0015] As a specific embodiment, the end of the movable section is located on both sides of the C-shaped arm to form a first platform, and the end of the movable section is located on both sides of the C-shaped groove to form a second platform, the first platform and the second platform are both inclined surfaces with the same inclination angle.

[0016] As a further solution, the height of the first platform is between the top height and the bottom height of the C-shaped arm, and the height of the second platform is between the top height and the bottom height of the C-shaped groove.

[0017] As a further solution:

[0018] In the front section, the inclination angle of the first platform and the second platform is 8.5°±2°, the distance between the center of the C-shaped arm and the center of the C-shaped groove is 2.2±0.2mm, and the number of nodes of the movable section is 16±4.

[0019] In the middle section, the inclination angle of the first platform and the second platform is 7.5°±1°, the distance between the center of the C-shaped arm and the center of the C-shaped groove is 2.5±0.2mm, and the number of nodes of the movable section is 4±2.

[0020] In the rear section, the inclination angle of the first platform and the second platform is 5°±1°, the distance between the center of the C-shaped arm and the center of the C-shaped groove is 3.2±0.2mm, and the number of nodes of the movable section is 4±2.

[0021] As a specific implementation, the side wall of the movable joint is provided with a fixed pressing groove recessed to the inside of the movable joint; the fixed pressing grooves on adjacent movable joints are arranged alternately left and right.

[0022] As a specific implementation, one end of the last joint is connected with the rear joint, and the other end is provided with a compression cut, wherein the compression cut is symmetrically provided with two; the outer wall of the last joint is provided with an observation hole at a position close to the rear joint.

[0023] As a specific implementation, the connection of the first joint and the front joint, and the connection of the rear joint and the last joint are both connected by installing a C-shaped arm in a C-shaped groove; one end of the first joint and the front joint and one end of the last joint and the rear joint are both provided with the same structure as the end of the movable joint.

[0024] Advantages: Compared with the prior art, the snake bone structure has the following advantages:

[0025] 1. By the connection mode of the C-shaped arm and the C-shaped groove, each movable joint can rotate freely in multiple directions, so that complex multi-directional bending is realized; the bending angle of the front joint and the middle joint is greater than that of the rear joint, and this segmented design makes the front end more flexible and can better perform fine operation, and the rear joint provides certain rigidity to ensure the stability of the whole.

[0026] 2. The front joint, the middle joint and the rear joint all include a plurality of movable joints with the same structure, which is simple in structure, only one steel pipe is needed during production, and a steel pipe with an uncommon specification does not need to be customized; the modular design enables each movable joint to be independently produced and tested, and the modular design makes the assembly process more simple, thereby improving the production efficiency; if a movable joint is damaged, it can be replaced individually, without the need to replace the entire joint segment, thereby reducing the maintenance cost.

[0027] 3. One end of the movable joint is provided with a C-shaped arm, and the other end is provided with a C-shaped groove, which is a simple and reliable connection mode, and the connection can be completed only by inserting the C-shaped arm into the C-shaped groove, which not only reduces the assembly steps, but also reduces the assembly difficulty; the connection mode of the C-shaped arm and the C-shaped groove enables the connection between the movable joints to be very fast, and the entire snake bone structure can be quickly completed. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 FIG. 1 is a structural schematic view of the snake bone structure of the present application.

[0029] Figure 2 FIG. 3 is a structural schematic view of the movable joint in the snake bone structure of the present application.

[0030] Figure 3 FIG. 5 is a connection state diagram of two adjacent movable joints in the snake bone structure of the present application.

[0031] Figure 4The utility model discloses a structure diagram of the first section of the snake bone structure.

[0032] Figure 5 The utility model discloses a structure diagram of the first section of the snake bone structure.

[0033] Figure 6 The utility model discloses a structure diagram of the first section of the snake bone structure.

[0034] Figure 7 The utility model discloses a structure diagram of the first section of the snake bone structure.

[0035] 1, first section;101, first cutout;102, second cutout;2, front section;3, middle section;4, rear section;5, last section;501, compression cutout;502, observation hole;6, movable section;601, C type arm;602, C type slot;603, first mesa;604, second mesa;605, fixed pressure slot;7, front end piece;701, image sensor;702, LED lamp hole position;703, instrument channel pipe. DETAILED DESCRIPTION

[0036] The utility model will be further described below in connection with the drawings.

[0037] In the description of the present application, it is understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the present application, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0038] An electronic endoscope snake-like structure includes a first segment 1, a front segment 2, a middle segment 3, a rear segment 4, and a last segment 5 connected in sequence. The front segment 2, the middle segment 3, and the rear segment 4 are all flexible segments, and the bending angle of the front segment 2 and the middle segment 3 is greater than that of the rear segment 4. The front segment 2, the middle segment 3, and the rear segment 4 each include several movable segments 6 with the same structure. One end of the movable segment 6 is provided with a C-shaped arm 601, and the other end is provided with a C-shaped groove 602. Each movable segment 6 is connected to the other by the C-shaped arm 601 installed in the C-shaped groove 602. Each segment bends by the rotation of the C-shaped arm 601 in the C-shaped groove 602.

[0039] In this application, the identical structure of the movable section 6 in the front section 2, middle section 3, and rear section 4 refers only to its structural shape and does not include dimensional data. The structure refers to the C-shaped arm 601 at one end of the movable section 6 and the C-shaped groove 602 at the other end. Dimensional data includes the distance between the centers of the C-shaped arm 601 and the C-shaped groove 602, as well as other assembly data such as the cutting angle α.

[0040] In this application, the bending angles of the front section 2 and the middle section 3 are greater than the bending angle of the rear section 4. Specifically, in one embodiment, the bending angle of the front section 2 is greater than the bending angle of the middle section 3, and the bending angle of the middle section 3 is greater than the bending angle of the rear section 4. In another embodiment, the bending angle of the front section 2 is equal to the bending angle of the middle section 3, and the bending angles of the front section 2 and the middle section 3 are greater than the bending angle of the rear section 4.

[0041] In use, the front end piece 7 is connected within the first section 1, and the control component is connected to the last section 5. The rotation of the front section 2, middle section 3, and rear section 4 can adapt to the movement of the control component, thereby driving the front end piece 7 to move. This operation is a routine operation of an endoscope and will not be further described in this application. This application uses a design with several structurally identical movable sections 6, which is simple in structure and easy to assemble and replace. The bending angles of the front section 2 and middle section 3 are greater than the bending angle of the rear section 4. This segmented design makes the front end more flexible and allows for better precision operation.

[0042] like Figure 2 As shown, one end of the movable section 6 is provided with a C-shaped arm 601, and the other end is provided with a C-shaped groove 602. The movable sections 6 are connected to each other and to each segment via the C-shaped arm 601 mounted in the C-shaped groove 602 (e.g., ...). Figure 3As shown in the figure, each segment is bent by rotation of the C-shaped arm 601 in the C-shaped groove 602. As a preferred solution, two C-shaped arms 601 are symmetrically arranged at one end of the movable segment 6, and two C-shaped grooves 602 are symmetrically arranged at the other end of the movable segment 6, that is, the line connecting the centers of the two C-shaped arms 601 passes through the axis of the movable segment 6, and similarly, the line connecting the centers of the two C-shaped grooves 602 also passes through the axis of the movable segment 6, and the position corresponds to the position of the two C-shaped arms 601. As designed above, the connection of the movable segment is more firm, and the rotation is more stable.

[0043] In the front segment 2, the inclination angle of the connecting platform of adjacent movable segments 6 is 8.5°±2°; in the middle segment 3, the inclination angle of the connecting platform of adjacent movable segments 6 is 7.5°±1°, and in the rear segment 4, the inclination angle of the connecting platform of adjacent movable segments 6 is 5°±1°, and the connecting platform refers to the platform on both sides of the C-shaped arm 601 and the C-shaped groove 602.

[0044] As a more specific design, the end of the movable segment 6 is located on both sides of the C-shaped arm 601 to form a first platform 603, and is located on both sides of the C-shaped groove 602 to form a second platform 604, both the first platform 603 and the second platform 604 are inclined surfaces, both inclined surfaces are inclined to the middle position of the movable segment 6, and the inclination angles are the same. The height of the first platform 603 is between the top height and the bottom height of the C-shaped arm 601; the height of the second platform 604 is between the top height and the bottom height of the C-shaped groove 602. The side wall of the movable segment 6 is provided with a fixed pressing groove 605 recessed to the inside of the movable segment 6; preferably, the fixed pressing grooves 605 on adjacent movable segments 6 are alternately arranged left and right, which can ensure that the minimum space of the pressing groove part can meet the demand, and the pipeline can avoid the pressing groove arrangement left and right.

[0045] As a more preferred design:

[0046] In the front segment 2, the inclination angle α of the first platform 603 and the second platform 604 is 8.5°±2°, the distance a between the center of the C-shaped arm 601 and the center of the C-shaped groove 602 is 2.2±0.2mm, and the number of nodes of the movable segment 6 is 16±4;

[0047] In the middle segment 3, the inclination angle α of the first platform 603 and the second platform 604 is 7.5°±1°, the distance a between the center of the C-shaped arm 601 and the center of the C-shaped groove 602 is 2.5±0.2mm, and the number of nodes of the movable segment 6 is 4±2;

[0048] In the rear segment 4, the inclination angle α of the first platform 603 and the second platform 604 is 5°±1°, the distance a between the center of the C-shaped arm 601 and the center of the C-shaped groove 602 is 3.2±0.2mm, and the number of nodes of the movable segment 6 is 4±2.

[0049] It should be noted that in the snake bone structure, the bending angle of the active joint 6 is affected by the cutting angle (inclination angle), the greater the inclination angle, the greater the bending angle. In addition, the bending angle is also related to the number of active joints and the distance a of the center. As in the previous section 2, the inclination angle a is 10°, the distance a is 2.1 mm, and the number of active joints 6 is 18, and the corresponding middle section and rear section are designed, which can make the bending angle of the snake bone front section 2 exceed 360°. That is, the bending range of the snake bone front section 0-360° is realized. Through the above specific inclination angle design, the bending performance, rigidity and stability of the snake bone are better integrated, so that the snake bone has good bending performance while improving the rigidity and stability of the snake bone. Specifically, the larger cutting angle of the front section 2 and the shorter distance a make the front section be able to realize a smaller bending radius, thereby providing a highly flexible steering capability at the front end. The medium-sized cutting angle and medium length of the middle section 3 ensure that the middle section can still realize moderate bending while maintaining a certain rigidity and support force, supporting more complex movement of the front end. The smaller cutting angle and longer distance of the rear section 4 enhance the structural strength of the rear section, while allowing slight angle adjustment, providing necessary support for the entire device.

[0050] As in one embodiment, the inclination angle a of the first table 603 and the second table 604 of the front section 2 is 10°, the inclination angle a of the first table 603 and the second table 604 of the middle section 3 is 8°, and the inclination angle a of the first table 603 and the second table 604 of the rear section 4 is 5°. At this design, the bending angles of the front section 2, the middle section 3, and the rear section 4 decrease in turn.

[0051] As in another embodiment, the inclination angle a of the first table 603 and the second table 604 of the front section 2 is 8°, the inclination angle a of the first table 603 and the second table 604 of the middle section 3 is 8°, and the inclination angle a of the rear section 4 is 5°. At this design, the bending angles of the front section 2 and the middle section 3 are the same and greater than the bending angle of the rear section 4.

[0052] In some embodiments, the inclination angle a of the first table 603 and the second table 604 of each movable section 6 in the front section 2 is the same, the inclination angle a of the first table 603 and the second table 604 of each movable section 6 in the middle section 3 is the same, and the inclination angle a of the first table 603 and the second table 604 of each movable section 6 in the rear section 4 is the same. In other embodiments, the inclination angle a of the first table 603 and the second table 604 of each movable section 6 in the front section 2 decreases in turn, the inclination angle a of the first table 603 and the second table 604 of each movable section 6 in the middle section 3 decreases in turn, and the inclination angle a of the first table 603 and the second table 604 of each movable section 6 in the rear section 4 decreases in turn. For example, the inclination angle a of the first table 603 and the second table 604 of the first movable section 6 in the front section 2 is 10.5°, the inclination angle a of the first table 603 and the second table 604 of the last movable section 6 is 8°, and the inclination angle a of the first table 603 and the second table 604 of the first movable section 6 in the middle section 3 cannot be greater than 8°.

[0053] As shown in FIG. 1, the first section 1 is provided with a cutting group at one end away from the front section 2, and the cutting group at the end of the first section 1 includes a first cutting 101 and a second cutting 102. Figure 4 As shown in FIG. 1, the first section 1 is provided with a cutting group at one end away from the front section 2, and the cutting group at the end of the first section 1 includes a first cutting 101 and a second cutting 102. Figure 5 As shown in FIG. 1, the first section 1 is provided with a cutting group at one end away from the front section 2, and the cutting group at the end of the first section 1 includes a first cutting 101 and a second cutting 102. Figure 6 As shown in FIG. 1, the first section 1 is provided with a cutting group at one end away from the front section 2, and the cutting group at the end of the first section 1 includes a first cutting 101 and a second cutting 102. As shown in FIG. 1, the first section 1 is provided with a cutting group at one end away from the front section 2, and the cutting group at the end of the first section 1 includes a first cutting 101 and a second cutting 102.

[0054] As shown in FIG. 1, the first section 1 is provided with a cutting group at one end away from the front section 2, and the cutting group at the end of the first section 1 includes a first cutting 101 and a second cutting 102. Figure 7 As shown in FIG. 1, the first section 1 is provided with a cutting group at one end away from the front section 2, and the cutting group at the end of the first section 1 includes a first cutting 101 and a second cutting 102. As shown in FIG. 1, the first section 1 is provided with a cutting group at one end away from the front section 2, and the cutting group at the end of the first section 1 includes a first cutting 101 and a second cutting 102.

[0055] In one embodiment, the first section 1, the front section 2, the middle section 3, the rear section 4 and the tail section 5 are all cylindrical structures, and the cylinders have the same diameter.

[0056] The endoscope snake bone structure of the present application does not need to customize steel pipes of uncommon specifications, has good adaptability, can save assembly size, can freely adjust the bending angle and the arc size of the snake bone, and meets the needs of examination and treatment of different parts.

[0057] The specific design principle of the electronic endoscope snake bone structure is as follows:

[0058] 1. Design explanation of the snake bone first section: The snake bone first section 1 is connected with the front end piece of the electronic endoscope, and the cutout part avoids the electrical elements and cables of the module to avoid damage to the outer skin. The first cutout 101 can avoid extrusion on the image sensor cable, and the second cutout 102 can avoid extrusion on the instrument channel pipe to prevent damage to the outer skin.

[0059] 2. Design explanation of the snake bone front section: When the product enters the body, the bending radius is small, and the design of the C-shaped groove and the C-shaped arm avoids compression of the internal instrument cavity. It has the functions of providing rigidity and support force and large-angle bending. The front section 2 needs to be flexibly bent at the front end, so each movable section 6 needs to have a large cutting angle a and a short length a, as shown in Figure 2 The angle a is 8.5°±2°, and the length a is 2.2±0.2mm. The number of movable sections 6 in the front section is selected according to the length of the product to be adapted, and the number of nodes is 16±4. The left and right alternating fixed pressure grooves 605 are not symmetrical due to the limited internal space of the snake bone, and the minimum internal space needs to be controlled. The left and right alternating pressure grooves can ensure that the minimum space of the pressure groove part can also meet the demand, and the pipeline can avoid the pressure groove arrangement left and right.

[0060] 3. Design explanation of the snake bone middle section: It has the functions of providing rigidity and support force and medium-angle bending. The middle section 3 needs to be flexibly bent at the middle end, so each movable section 6 needs to have a medium cutting angle a and a medium length a, as shown in Figure 2 The angle a is 7.5°±1°, and the length a is 2.5±0.2mm. The number of movable sections 6 in the front section is selected according to the length of the product to be adapted, and the number of nodes is 4±2. The left and right alternating fixed pressure grooves 605 are not symmetrical due to the limited internal space of the snake bone, and the minimum internal space needs to be controlled. The left and right alternating pressure grooves can ensure that the minimum space of the pressure groove part can also meet the demand, and the pipeline can avoid the pressure groove arrangement left and right.

[0061] 4. Design Description of the Rear Section of the Snake Bone: Primarily provides rigidity and support, with a slight angular bending function. Since the rear section 4 only requires small-directional bending at the rear end, it provides some support for the bending (the further back the snake bone, the greater the force required to bend the wire rope, the larger the cutting angle, and the weaker the structural strength for a shorter length). Therefore, each movable section 6 needs a small cutting angle α and a large length a, such as... Figure 2 As shown. Angle α is 5°±1°, and length a is 3.2±0.2mm. The number of movable sections 6 in the rear section is selected according to the product and length to be compatible, with a number of sections of 4±2. The fixed pressure grooves 605 are alternately arranged on the left and right sides rather than symmetrically because the internal space of the snake-shaped structure is limited, and it is necessary to control the minimum internal space. Alternating left and right pressure grooves can ensure that the minimum space of the pressure groove section can also meet the requirements, and the pipeline can be arranged to avoid the pressure grooves on the left and right sides.

[0062] 5. Design Description of the Snake Bone Terminal Segment: The snake bone terminal segment 5 requires welding a capillary tube (through which the tension wire rope passes, restricting its movement and preventing twisting and knotting) and connecting it to the braided mesh tube. The observation hole 502 is used to observe whether the thin-walled steel pipe is in the correct position, facilitating positioning during laser welding. The compression notch 501 is to provide a compression allowance for the snake bone terminal segment, allowing for a reduction in the outer diameter of the compressed section.

[0063] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A snake-bone structure for an electronic endoscope, characterized in that, It includes the first section (1), the first section (2), the middle section (3), the last section (4), and the last section (5) connected in sequence; The front section (2), middle section (3) and rear section (4) are all bendable segments, and the bending angle of the front section (2) and middle section (3) is greater than that of the rear section (4). The front section (2), middle section (3) and rear section (4) each include several movable sections (6) with the same structure. One end of each movable section (6) is provided with a C-shaped arm (601) and the other end is provided with a C-shaped groove (602). Each movable section (6) is connected to the other by the C-shaped arm (601) installed in the C-shaped groove (602). Each segment bends by the rotation of the C-shaped arm (601) in the C-shaped groove (602).

2. The serpentine structure of the electronic endoscope according to claim 1, characterized in that, The first section (1) is provided with a slit group at the end away from the front section (2). The slit group includes a first slit (101) and a second slit (102). The end of the first section (1) away from the front section (2) is connected to a front end member (7). The front end member (7) is provided with an image sensor (701) and an instrument channel tube (703). The first slit (101) corresponds to the position of the image sensor cable, and the second slit (102) corresponds to the position of the instrument channel tube.

3. The serpentine structure of the electronic endoscope according to claim 1, characterized in that: In the front section (2), the tilt angle of the connecting platform of the adjacent movable sections (6) is 8.5°±2°, the length of the movable section (6) is 2.2±0.2mm, and the number of sections is 16±4; In the middle section (3), the tilt angle of the connecting platform of the adjacent movable section (6) is 7.5°±1°, the length of the movable section (6) is 2.5±0.2mm, and the number of sections is 4±2; In the rear section (4), the tilt angle of the connecting platform of the adjacent movable section (6) is 5°±1°, the length of the movable section (6) is 3.2±0.2mm, and the number of sections is 4±2.

4. The serpentine structure of the electronic endoscope according to claim 1, characterized in that, Two C-shaped arms (601) are symmetrically arranged at one end of the movable section, and two C-shaped grooves (602) are also symmetrically arranged at the other end of the movable section.

5. The serpentine structure of the electronic endoscope according to claim 1, characterized in that, The ends of the movable section (6) are located on both sides of the C-shaped arm (601) to form a first platform (603); the ends of the movable section (6) are located on both sides of the C-shaped groove (602) to form a second platform (604). Both the first platform (603) and the second platform (604) are inclined surfaces with the same inclination angle.

6. The serpentine structure of the electronic endoscope according to claim 5, characterized in that, The height of the first platform (603) is between the top and bottom heights of the C-arm (601); the height of the second platform (604) is between the top and bottom heights of the C-groove (602).

7. The serpentine structure of the electronic endoscope according to claim 5, characterized in that: In the front section (2), the tilt angle of the first platform (603) and the second platform (604) is 8.5°±2°, the distance between the center of the C-arm (601) and the center of the C-groove (602) is 2.2±0.2mm, and the number of movable sections (6) is 16±4. In the middle section (3), the tilt angle of the first platform (603) and the second platform (604) is 7.5°±1°, the distance between the center of the C-arm (601) and the center of the C-groove (602) is 2.5±0.2mm, and the number of movable sections (6) is 4±2. In the rear section (4), the tilt angle of the first platform (603) and the second platform (604) is 5°±1°, the distance between the center of the C-arm (601) and the center of the C-groove (602) is 3.2±0.2mm, and the number of movable sections (6) is 4±2.

8. The serpentine structure of the electronic endoscope according to claim 1, characterized in that, The side wall of the movable section (6) is provided with a fixing groove (605) that is recessed into the movable section (6); the fixing grooves (605) on adjacent movable sections (6) are alternately arranged on the left and right.

9. The serpentine structure of the electronic endoscope according to claim 1, characterized in that, One end of the last section (5) is connected to the rear section (4), and the other end is provided with a compression cut (501), wherein two compression cuts (501) are symmetrically arranged; on the outer wall of the last section (5), an observation hole (502) is provided near the rear section (4).

10. The serpentine structure of the electronic endoscope according to claim 1, characterized in that, The connection between the first section (1) and the front section (2), and the connection between the rear section (4) and the last section (5), are all made by using C-arms installed in C-grooves for connection; the end of the connection between the first section (1) and the front section (2), and the end of the connection between the last section (5) and the rear section (4) are all set with the same structure as the end of the movable section (6).

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