A snake bone assembly and an endoscope

Abstract

The present invention relates to an endoscope, and discloses a snake bone assembly and an endoscope. The snake bone assembly includes a snake bone assembly body, and the snake bone assembly body includes a plurality of snake bone assembly units (1) that are sequentially connected and have different bending strengths. The snake bone assembly unit (1) includes one or more snake bone unit segments (2) that are sequentially connected. The present invention provides a snake bone composed of snake bone assemblies with different bending strengths, which can achieve the effect that some bone segments of the snake bone bend first and other parts bend later according to actual clinical needs, and has better flexibility.

Description

Technical Field

[0001] The present invention relates to an endoscope, and more particularly to a snake bone assembly. Background Art

[0002] Endoscopes are commonly used tools in today's society, mainly applied in the medical and industrial fields, and are often used for medical examinations, minimally invasive surgeries, and equipment maintenance, etc.

[0003] When the existing endoscope realizes the bending and deflection of the head at the bending angle, it is achieved by pulling the steel wire rope built in the snake bone and connected to the snake bone to bend the endoscope head.

[0004] When the existing snake bone is in use, after the user pulls the control wire, it cannot deflect in an orderly manner according to the operator's intention. For example, when the operator needs the head end of the snake bone to bend first, the situation where the rear end bends first often occurs, increasing the difficulty of use for the operator. Summary of the Invention

[0005] The present invention provides a snake bone assembly and an endoscope for the problems existing in the control of the snake bone in the prior art.

[0006] In order to solve the above technical problems, the present invention is solved by the following technical solutions:

[0007] A snake bone assembly includes a snake bone assembly body, and the snake bone assembly body includes a plurality of snake bone assembly units connected in sequence and having different bending strengths. The snake bone assembly unit includes one or more snake bone unit segments connected in sequence.

[0008] By assembling the snake bone by connecting snake bone assemblies with different bending strengths, the operator can select to set different bending difficulty segments at the required positions according to actual needs to achieve the orderly bending of the snake bone according to actual requirements, so as to realize more flexible control of the snake bone.

[0009] Preferably, the snake bone assembly unit includes a snap-fit snake bone assembly, a riveted snake bone assembly, and a semi-rigid snake bone assembly.

[0010] Preferably, the snap-fit snake bone assembly includes a plurality of snap-fit snake bone unit segments connected in sequence and in a cylindrical shape. The adjacent snap-fit snake bone unit segments are rotatably connected. The end of the snap-fit snake bone unit segment is provided with a circular lock groove or a circular lock that cooperates with the adjacent snap-fit snake bone unit segment. The adjacent snap-fit snake bone unit segments are rotatably connected through the cooperation of the circular lock groove and the circular lock.

[0011] The rotating shaft formed by the circular lock groove and the circular lock is perpendicular to the central axis of the clamping snake bone assembly. Through the cooperation between the circular lock groove and the circular lock, the rotational connection between adjacent clamping snake bone unit joints can be realized. The mutual rotation process is the bending process of the clamping snake bone assembly to achieve the bending of the entire snake bone.

[0012] Preferably, bumps or grooves for cooperating with adjacent clamping snake bone unit joints are further provided on the end faces of the clamping snake bone unit joints. The adjacent clamping snake bone unit joints are limited by the cooperation of the bumps and the grooves. The clamping between the bumps and the grooves can prevent the radial displacement between adjacent clamping snake bone unit joints and effectively ensure the stability of the rotation process between adjacent clamping snake bone unit joints.

[0013] Preferably, the riveted snake bone assembly includes a plurality of sequentially connected and cylindrical riveted snake bone unit joints. The adjacent riveted snake bone unit joints are rotatably connected. Circular connecting pieces for rotatably connecting with adjacent riveted snake bone unit joints by rivets are provided at the ends of the riveted snake bone unit joints.

[0014] The rotation between adjacent riveted snake bone unit joints is realized by connecting the circular connecting pieces between adjacent riveted snake bone unit joints with rivets. The mutual rotation process is the bending process of the riveted snake bone assembly to achieve the bending of the entire snake bone.

[0015] Preferably, the circular connecting piece includes a first circular connecting piece and a second circular connecting piece respectively arranged at both ends of the riveted snake bone unit joint. A first circular shoulder for inserting the second circular connecting piece on the adjacent riveted snake bone unit joint is formed between the first circular connecting piece and the end face of the riveted snake bone unit joint. A second circular shoulder for inserting the first circular connecting piece on the adjacent riveted snake bone unit joint is formed between the second circular connecting piece and the end face of the riveted snake bone unit joint. The first circular shoulder and the second circular shoulder can make the overall structure more compact when adjacent riveted snake bone unit joints are cooperatively connected, reduce the interference of the circular connecting piece and the rivet to the space outside the outer side surface of the riveted snake bone assembly, and at the same time can play a role in limiting the connection between the first circular connecting piece and the second circular connecting piece to ensure the smooth and stable operation of the snake bone.

[0016] Preferably, the semi-rigid snake bone assembly includes semi-rigid snake bone unit joints. The semi-rigid snake bone unit joints are cylindrical. First arc-shaped long holes and second arc-shaped long holes are oppositely arranged on the side walls of the semi-rigid snake bone unit joints. A connecting rib capable of elastic deformation is formed between the end of the first arc-shaped long hole and the end of the second arc-shaped long hole on the side wall of the semi-rigid snake bone unit joint.

[0017] The first arcuate long strip hole and the second arcuate long strip hole form a deflection gap, the connecting rib forms a semi-rigid connecting shaft, and multiple semi-rigid snake bone unit joints form a semi-rigid snake bone assembly. The semi-rigid snake bone assembly can be cut according to actual needs to obtain connecting ribs with different thicknesses to achieve different bending difficulties of the semi-rigid snake bone assembly, so that the operator can select a semi-rigid snake bone assembly with different bending difficulties according to clinical needs for splicing to obtain a snake bone that can be sequentially bent as needed.

[0018] Preferably, the first arcuate long strip hole and the second arcuate long strip hole are relatively staggered or directly opposite in the axial direction of the semi-rigid snake bone unit joint.

[0019] Preferably, a connecting piece that bends towards the center of the snake bone assembly body is integrally formed on the side wall of the snake bone unit joint, and the bent portion of the connecting piece forms a steel wire channel for the steel wire to pass through. The composition method of the steel wire channel makes its processing simple and the steel wire assembly convenient.

[0020] An endoscope, including a snake bone, and the snake bone includes a snake bone assembly as described above.

[0021] Due to the adoption of the above technical solutions, the present invention has significant technical effects:

[0022] The present invention provides a snake bone composed of snake bone assemblies with different bending strengths, which can achieve the effect that some bone joints of the snake bone bend first and other parts bend later according to actual clinical needs, and has better flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the connection structure of the snap-fit snake bone assembly and the semi-rigid snake bone assembly of the present invention.

[0024] Figure 2 is Figure 1 the schematic diagram of the usage state of Figure 1 .

[0025] Figure 3 is Figure 1 the schematic diagram of the usage state of Figure 2 .

[0026] Figure 4 It is a schematic diagram of the connection structure of the riveted snake bone assembly and the semi-rigid snake bone assembly of the present invention.

[0027] Figure 5 is Figure 4 the schematic diagram of the usage state of Figure 1 .

[0028] Figure 6 is Figure 4 the schematic diagram of the usage state of Figure 2 .

[0029] Figure 7Yes Figure 1 Schematic diagram of the structure of the snap - connected snake bone assembly in [].

[0030] Figure 8 Yes Figure 4 Schematic diagram of the structure of the riveted snake bone assembly in [].

[0031] Figure 9 Yes Figure 1 or Figure 4 Schematic diagram of the structure of the semi - rigid snake bone assembly in [].

[0032] Figure 10 Yes Figure 7 Schematic diagram of the structure of the snap - connected snake bone unit section in [].

[0033] Figure 11 Yes Figure 10 Cross - sectional view of the A - A plane in [].

[0034] Figure 12 Yes Figure 10 Side view of [].

[0035] Figure 13 Yes Figure 8 Schematic diagram of the cooperation of adjacent riveted snake bone unit sections in [].

[0036] Figure 14 Yes Figure 13 Schematic diagram of the structure of the riveted snake bone unit section in [].

[0037] Figure 15 Yes Figure 14 Side view of [].

[0038] Figure 16 Yes Figure 9 Side view of [].

[0039] Figure 17 Yes Figure 9 Front view of [].

[0040] Figure 18 Yes Figure 9 Schematic diagram of the usage state of []. Figure 1 .

[0041] Figure 19 Yes Figure 9 Schematic diagram of the usage state of []. Figure 2 .

[0042] Figure 20 Yes Figure 9 Schematic diagram of the structure of the semi - steel snake bone unit section in [].

[0043] Figure 21 Yes Figure 20 Top view of [].

[0044] Figure 22 YesFigure 20 Schematic diagram of the usage state.

[0045] Figure 23 It is a schematic structural diagram of the semi - steel snake bone unit section in Embodiment 2.

[0046] Figure 24 It is the schematic structure of the semi - steel snake bone unit section in Embodiment 3 Figure 1 .

[0047] Figure 25 It is the schematic structure of the semi - steel snake bone unit section in Embodiment 3 Figure 2 .

[0048] Figure 26 It is the schematic structure of the semi - steel snake bone unit section in Embodiment 3 Figure 3 .

[0049] Figure 27 It is the schematic structure of the semi - steel snake bone unit section in Embodiment 4 Figure 1 .

[0050] Figure 28 It is the schematic structure of the semi - steel snake bone unit section in Embodiment 4 Figure 2 .

[0051] Figure 29 It is the schematic structure of the semi - steel snake bone unit section in Embodiment 4 Figure 3 . Specific implementation manners

[0052] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0053] Embodiment 1

[0054] A snake bone assembly, as Figures 1 - 22 shown, includes a snake bone assembly body. The snake bone assembly body includes multiple snake bone assembly units 1 connected in sequence and having different bending strengths. The snake bone assembly unit 1 includes one or more snake bone unit sections 2 connected in sequence.

[0055] In this embodiment, the snake bone assembly unit 1 includes a snap - fit snake bone assembly 11, a riveted snake bone assembly 12, and a semi - rigid snake bone assembly 13.

[0056] Among them, the snap - fit snake bone assembly 11 includes a plurality of snap - fit snake bone unit sections 21 connected in sequence and in a cylindrical shape. The adjacent snap - fit snake bone unit sections 21 are rotatably connected. The end of the snap - fit snake bone unit section 21 is provided with a circular lock groove 202 or a circular lock 203 that cooperates with the adjacent snap - fit snake bone unit section 21. The adjacent snap - fit snake bone unit sections 21 are rotatably connected through the cooperation of the circular lock groove 202 and the circular lock 203.

[0057] The opening angle of the circular locking groove 202 is less than 90°, which can effectively limit the axial displacement after the adjacent snap-connected snake bone unit joints 21 are fitted. In addition, the snap-connected snake bone unit joint 21 has a certain thickness, so that when the circular lock 203 is fitted with the circular locking groove 202, the adjacent snap-connected snake bone unit joints 21 can be prevented from rotating around the axis.

[0058] The end face of the snap-connected snake bone unit joint 21 is also provided with a convex block 204 or a groove 205 for cooperating with the adjacent snap-connected snake bone unit joint 21. The adjacent snap-connected snake bone unit joints 21 are limited by the cooperation of the convex block 204 and the groove 205. When the adjacent snap-connected snake bone unit joints 21 are fitted and connected, the convex block 204 is snapped into the groove 205, which can prevent the adjacent snap-connected snake bone unit joints 21 from having radial displacement.

[0059] After the adjacent snap-connected snake bone unit joints 21 are fitted, due to the existence of the circular locking groove 202, the circular lock 203, the convex block 204 and the groove 205, when one of the snap-connected snake bone unit joints 21 is fixed, the other snap-connected snake bone unit joint 21 can rotate around the circular lock 203, without axial displacement, nor rotation around the axis and radial displacement. The operator can adjust the size of the rotation angle by adjusting the gap between the adjacent snap-connected snake bone unit joints 21, and different sizes of gaps can also be designed according to needs during the processing to meet the operation requirements.

[0060] The riveted snake bone assembly 12 includes a plurality of riveted snake bone unit joints 22 that are sequentially connected and cylindrical. The adjacent riveted snake bone unit joints 22 are rotatably connected. The end of the riveted snake bone unit joint 22 is provided with a circular connecting piece 301 that is rotatably connected to the adjacent riveted snake bone unit joint 22 by a rivet 302.

[0061] Among them, the circular connecting piece 301 includes a first circular connecting piece 303 and a second circular connecting piece 304 respectively arranged at both ends of the riveted snake bone unit joint 22. A first circular shoulder 305 for inserting the second circular connecting piece 304 on the adjacent riveted snake bone unit joint 22 is formed between the first circular connecting piece 303 and the end face of the riveted snake bone unit joint 22. A second circular shoulder 306 for inserting the first circular connecting piece 303 on the adjacent riveted snake bone unit joint 22 is formed between the second circular connecting piece 304 and the end face of the riveted snake bone unit joint 22.

[0062] The connection between the first circular connecting piece 303 and the second circular connecting piece 304 is realized through the rivet 302, which can effectively prevent the two riveted snake bone unit joints 22 from having other displacements except for rotating relatively around the axis of the rivet 302. And on the riveted snake bone unit joint 22, there are provided a first circular concave shoulder 305 for inserting the second circular connecting piece 304 and a second circular concave shoulder 306 for inserting the first circular connecting piece 303, which can make the overall structure more compact when adjacent riveted snake bone unit joints 22 are connected in cooperation, reduce the interference of the circular connecting piece 301 and the rivet 302 to the space outside the outer side of the riveted snake bone assembly 12, ensure the smooth and stable operation of the snake bone, and at the same time can play a role in limiting the connection between the current first circular connecting piece 303 and the second circular connecting piece 304, ensuring the connection stability between the two.

[0063] In this embodiment, the semi-rigid snake bone assembly 13 includes semi-rigid snake bone unit joints 23. The semi-rigid snake bone unit joints 23 are in a cylindrical shape. On the side wall of the semi-rigid snake bone unit joints 23, there are provided a first arc-shaped long hole 101 and a second arc-shaped long hole 102 which are oppositely arranged. Between the end of the first arc-shaped long hole 101 and the end of the second arc-shaped long hole 102 on the side wall of the semi-rigid snake bone unit joints 23, there is formed a connecting rib 103 capable of elastic deformation.

[0064] Among them, the first arc-shaped long hole 101 and the second arc-shaped long hole 102 are relatively staggered in the axial direction of the semi-rigid snake bone unit joints 23, and the shapes of the first arc-shaped long hole 101 and the second arc-shaped long hole 102 are the same and the widths are equal from one end to the other end.

[0065] During the use process, when pulling the steel wire on one side, the semi-rigid snake bone unit joints 23 are relatively deflected by relying on the elastic deformation of the connecting rib 103 on the semi-rigid snake bone unit joints 23. Among them, the deflection gap determines the deflection angle, and the thickness of the connecting rib 103 determines the force for making the snake bone joint deflect when pulling the steel wire. The thicker the connecting rib 103, the greater the required force.

[0066] When designing, according to the principle that the thicker the thickness of the connecting rib 103, the greater the required pulling force, the thickness of the connecting rib 103 can be set according to actual needs. Specifically, it can be set by cutting the cutting width of the first arc-shaped long hole 101 and the second arc-shaped long hole 102. Only need to make the thickness of the semi-rigid connecting shaft of the part that needs to be bent first thinner than the thickness of other connecting shafts, then the snake bone of this part can be bent first and the other parts can be bent later. For example, when the operator needs the head end of the snake bone to be bent first and the tail end of the snake bone to be bent later, the thickness of the connecting rib 103 on the front half of the snake bone unit body near the head end of the snake bone is set thinner than that of the semi-rigid snake bone unit joint 2 in the rear half near the tail end of the snake bone.

[0067] In this embodiment, a steel wire channel 15 for the steel wire to pass through is provided on the side wall of the snake bone unit section 2. There are two steel wire channels 15 symmetrically arranged on the side wall of the snake bone unit section 2, and a steel wire is passed through each of the two symmetrically arranged steel wire channels 15. The steel wires pass through the steel wire channels 15 on the snake bone unit sections 2 connected in sequence one by one, and after the steel wires are fixed to the head end of the snake bone, the fixing method can be welding, bonding or other methods. When the steel wire is pulled from the other end, the snake bone will deflect to the side where the steel wire is pulled, and then the movement of the snake bone can be effectively and stably controlled by the steel wire.

[0068] The specific structure of the steel wire channel 15 is that a connecting piece 14 bent toward the center of the snake bone component body is integrally formed on the side wall of the snake bone unit segment 2, and the bending part of the connecting piece 14 forms the steel wire channel 15 for the steel wire to pass through.

[0069] Among them, the connecting piece 14 of the clamping snake bone unit segment 21 is formed by opening an intermittent hole on the side wall of the clamping snake bone unit segment 21, and the end of the clamping snake bone unit segment 21 is spaced by the intermittent hole to form a connecting piece 14, and the connecting piece 14 is bent toward the center of the snake bone component body to form a wire channel 15.

[0070] Among them, the specific construction methods of the steel wire channel 15 on the riveted serpentine unit section 22 and the semi-rigid serpentine unit section 23 are the same, that is, a connecting piece 16 is provided on the side wall of the serpentine unit section 2, and a connecting piece 14 bent toward the center of the serpentine unit section 2 is provided on the inner wall of the connecting piece 16, and the bending part of the connecting piece 14 constitutes the steel wire channel 15, the connecting piece 14 and the side wall of the serpentine unit section 2 are integrally formed, and the connecting piece 16 and the connecting piece 14 are directly formed by cutting, and two corresponding cutting grooves are cut on the side wall of the serpentine unit section 2, and then the part between the two cutting grooves is bent toward the inside of the serpentine unit section 2 to form the connecting piece 16, and the part between the two cutting grooves constitutes the connecting piece 14.

[0071] The steel wire channel 15 formed by the above two methods is simple and convenient to process, and there is no need to fix extra parts to form the steel wire channel 15. At the same time, compared with the existing method of punching to realize the processing of the steel wire channel 15, the steel wire channel 15 in this way can also adjust the size to a certain extent during the process of threading the steel wire, which can better cooperate with the operator to thread the steel wire, and the subsequent assembly is more convenient.

[0072] When connecting different snake bone component units 1, a connecting structure cooperating with an adjacent snake bone component is provided at the end of the corresponding snake bone component unit 1. For example, when the snap-in snake bone component 11 is connected to the semi-rigid snake bone component 13, at the end of the snake bone unit section 2 of the semi-rigid snake bone component 13 connected to the snap-in snake bone component 11, there are provided a circular lock groove 202 or a circular lock 203 and a convex block 204 or a groove 205 that cooperate with the end of the snake bone unit section 2. The snap-in snake bone component 11 and the semi-rigid snake bone component 13 are connected on the one hand through the cooperation of the circular lock groove 202 and the circular lock 203 as well as the convex block 204 and the groove 205, and on the other hand, a steel wire is passed through the steel wire channels 15 on the snap-in snake bone component 11 and the semi-rigid snake bone component 13 to achieve the connection between the two and the manipulation of the steel wire on the two of them.

[0073] Similarly, the connection between the semi-rigid snake bone component 13 and the riveted snake bone component 12 is designed in the same way. That is, when connecting the semi-rigid snake bone component 13 connected to the riveted snake bone component 12, at the end of the semi-rigid snake bone unit section 23 of the semi-rigid snake bone component 13 connected to the riveted snake bone component 12, there is provided a circular connecting piece 301 that cooperates with the end of the riveted snake bone component 12. The riveted snake bone component 12 and the semi-rigid snake bone component 13 are connected on the one hand through a rivet to connect the circular connecting pieces 301 of the two.

[0074] Embodiment 2

[0075] Same as Embodiment 1, as Figure 23 shown, the difference is that in this embodiment, the first arc-shaped long hole 101 and the second arc-shaped long hole 102 are arranged opposite to each other in the axial direction of the semi-rigid snake bone unit section 23.

[0076] Embodiment 3

[0077] Same as Embodiment 1, as Figures 24 - 26 shown, the difference is that in this embodiment, the first arc-shaped long hole 101 and the second arc-shaped long hole 102 have the same shape and the width gradually decreases from the middle to both ends.

[0078] Embodiment 4

[0079] Same as Embodiment 2, as Figures 27 - 29 shown, the difference is that in this embodiment, the first arc-shaped long hole 101 and the second arc-shaped long hole 102 have the same shape and the width gradually decreases from the middle to both ends.

[0080] Embodiment 5

[0081] An endoscope includes a snake bone, and the snake bone includes a snake bone component in any one of Embodiments 1-4.

[0082] As Figures 1 - 19As shown, when the adjacent snap-fit ​​snake bone unit sections 21 in the snap-fit ​​snake bone component 11 rotate relative to each other, only the friction between the circular lock buckle 203 and the circular lock buckle groove 202 is generated, and the friction is very small; when the adjacent riveted snake bone unit sections 22 in the riveted snake bone component 12 rotate relative to each other, it is necessary to overcome the friction between the first circular connecting piece 303 and the second circular connecting piece 304, and the friction can be controlled by the riveting degree of the rivet 302. The greater the riveting degree of the rivet 302, the greater the friction, and the greater the difficulty of rotation. It is different from the snap-fit ​​snake bone component 11 that only needs to overcome the friction between the circular lock buckle 203 and the circular lock buckle groove 202 The friction between them may be the same or different; when the semi-rigid snake bone component 13 rotates, the steel wire needs to overcome the elastic deformation force of the semi-rigid connecting shaft to cause relative deflection between the snake bone nodes. Therefore, during operation, the snap-fit ​​snake bone component 11 and / or the riveted snake bone component 12 will bend first, and the semi-rigid snake bone component 13 will bend later. During assembly, the snap-fit ​​snake bone component 11 and / or the riveted snake bone component 12 can be placed in the part that the operator needs to bend in advance, and the semi-rigid snake bone component 13 can be placed in other parts that do not need to be bent in advance, so as to achieve the effect required by the operator and realize the sequential control of each part of the snake bone.

[0083] In addition, during assembly, multiple semi-rigid snake bone components 13 with connecting ribs 103 of different thicknesses can be set to complete the assembly of the entire snake bone. The connecting ribs 103 in different semi-rigid snake bone unit sections 23 of a single semi-rigid snake bone component 13 can also be set to be different. The processing personnel can process connecting ribs 103 of different thicknesses according to actual needs, and then realize the bending of the snake bone in sequence according to actual clinical needs, and perform sequential deflection according to the operator's wishes, which is more flexible to cooperate with the operator.

[0084] In conclusion, the above is only a preferred embodiment of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention should fall within the scope of the patent of the present invention.

Claims

1. A snake bone component, including the snake bone component body, characterized in that: The snake bone component body includes multiple snake bone component units (1) connected in sequence with different bending strengths, and the snake bone component unit (1) includes one or more snake bone unit segments (2) connected in sequence; The snake bone component unit (1) includes a snap - on snake bone component (11), a riveted snake bone component (12), and a semi - rigid snake bone component (13); Among them, the semi - rigid snake bone component (13) includes semi - rigid snake bone unit segments (23). The semi - rigid snake bone unit segment (23) is cylindrical. On the side wall of the semi - rigid snake bone unit segment (23), there are oppositely arranged first arc - shaped long holes (101) and second arc - shaped long holes (102). Between the end of the first arc - shaped long hole (101) and the end of the second arc - shaped long hole (102) on the side wall of the semi - rigid snake bone unit segment (23), there is a connecting rib (103) that can elastically deform; The semi - rigid snake bone component (13) includes one or more types of semi - rigid snake bone unit segments (23). For different types of semi - rigid snake bone unit segments (23), the cutting widths of the first arc - shaped long holes (101) and the second arc - shaped long holes (102) set are different, and the thicknesses of the connecting ribs (103) formed between the end of the first arc - shaped long hole (101) and the end of the second arc - shaped long hole (102) are different.

2. The snake bone component according to claim 1, wherein: The snap - on snake bone component (11) includes multiple snap - on snake bone unit segments (21) connected in sequence and in a cylindrical shape. The adjacent snap - on snake bone unit segments (21) are rotatably connected. At the end of the snap - on snake bone unit segment (21), there is a circular lock groove (202) or a circular lock (203) that cooperates with the adjacent snap - on snake bone unit segment (21). The adjacent snap - on snake bone unit segments (21) are rotatably connected through the cooperation of the circular lock groove (202) and the circular lock (203).

3. A snake bone assembly according to claim 2, characterized in that: On the end face of the snap - on snake bone unit segment (21), there is also a convex block (204) or a groove (205) that cooperates with the adjacent snap - on snake bone unit segment (21). The adjacent snap - on snake bone unit segments (21) are limited by the cooperation of the convex block (204) and the groove (205).

4. A snake bone component according to claim 1, characterized in that: The riveted snake bone component (12) includes multiple riveted snake bone unit segments (22) connected in sequence and in a cylindrical shape. The adjacent riveted snake bone unit segments (22) are rotatably connected. At the end of the riveted snake bone unit segment (22), there is a circular connecting piece (301) that is rotatably connected to the adjacent riveted snake bone unit segment (22) through a rivet (302).

5. The snake bone assembly according to claim 4, wherein: The circular connecting piece (301) includes a first circular connecting piece (303) and a second circular connecting piece (304) respectively arranged at both ends of the riveted snake bone unit segment (22). Between the first circular connecting piece (303) and the end face of the riveted snake bone unit segment (22), there is a first circular shoulder (305) for the second circular connecting piece (304) on the adjacent riveted snake bone unit segment (22) to insert. Between the second circular connecting piece (304) and the end face of the riveted snake bone unit segment (22), there is a second circular shoulder (306) for the first circular connecting piece (303) on the adjacent riveted snake bone unit segment (22) to insert.

6. A snake bone assembly according to claim 1, wherein: The first arcuate elongated hole (101) and the second arcuate elongated hole (102) are arranged offset relative to each other or facing each other in the axial direction of the semi-rigid snake bone unit section (23).

7. A snake bone component according to claim 1, characterized in that: A connecting piece (14) bent towards the center of the snake bone assembly body is integrally formed on the side wall of the snake bone unit section (2), and the bent portion of the connecting piece (14) forms a wire passage (15) for the wire to pass through.

8. An endoscope, including a snake bone, characterized in that: The snake bone includes a snake bone assembly according to any one of claims 1-7.

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