Snake bone structure and assembly
By setting multiple sets of clearance through holes on the side wall of the snake-bone structure and combining them with a driving component, the problem of twisting and deformation of the plastic snake-bone structure is solved, bending limit is achieved, cracking is prevented, and safe use is ensured.
Patent Information
- Application Number
- CN202422775785.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-13
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-11-13
AI Technical Summary
Existing plastic snake bones are prone to twisting and deformation during processing. The riveting process cannot limit the bending angle, resulting in excessive bending, which affects the performance and may cause the plastic to crack, causing injury to the patient.
A snake-bone structure is designed, in which multiple sets of rib holes are arranged axially on the side wall of the cylinder. Each set of holes includes two clearance through holes. The through holes are connected radially and staggered. Combined with a driving component, the snake-bone is driven to bend. The limiting structure of the rib holes prevents excessive bending.
It effectively prevents excessive bending of the tube, avoids deformation and breakage, ensures smooth movement of the snake bone inside the human body, and reduces the risk of injury to the patient.
Smart Images
Figure CN223601432U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of medical devices, in particular to a snake bone structure and assembly. BACKGROUND
[0002] An endoscope generally comprises a handle, an insertion tube, a snake bone and a tip device, the handle is at one end of the insertion tube close to the operator, the snake bone is at the other end of the insertion tube away from the operator, the distal end of the snake bone is connected to the tip device, etc., for observation and treatment operation, wherein the tip device is mainly imaging, lighting or operation clamping components, etc., for intraoperative imaging and surgical operation.
[0003] The existing plastic snake bone is generally processed by cutting or riveting of metal pipe material, so it is easy to twist and deform, and the riveting process cannot limit the bending angle during the twisting process, which is easy to cause excessive bending, and multiple excessive bending will cause the plastic to twist and deform, so that the snake bone moves slowly in the human body, and even the plastic may break, causing damage to the patient's body. CONTENT OF THE UTILITY MODEL
[0004] Therefore, it is necessary to provide a snake bone structure and assembly in view of the problem that the existing plastic snake bone is generally processed by cutting or riveting of metal pipe material, so it is easy to twist and deform, and the riveting process cannot limit the bending angle during the twisting process, which is easy to cause excessive bending, and multiple excessive bending will cause the plastic to twist and deform, so that the snake bone moves slowly in the human body, and even the plastic may break, causing damage to the patient's body.
[0005] A snake bone structure, comprising: a cylinder and a connecting part,
[0006] The cylinder has an operation through hole along its axial direction, and the two ends of the cylinder are operation end and insertion end respectively;
[0007] The connecting part is connected with the insertion end of the cylinder, one end of the connecting part away from the cylinder is used for connecting with the device of the tip, and the cable of the device of the tip is arranged through the operation through hole to the operation end; the side wall of the cylinder is provided with a plurality of groups of muscle position holes arranged in sequence along the axial direction thereof, each group of muscle position holes comprises two first avoiding through holes and two second avoiding through holes, the two first avoiding through holes are arranged on the two sides of the axis of the cylinder, the two second avoiding through holes are arranged on the two sides of the axis of the cylinder, and the first avoiding through hole and the second avoiding through hole on the same side of the axis of the cylinder are communicated along the radial direction of the cylinder and staggered.
[0008] In an embodiment, the first side wall of the first avoiding through hole in each group of muscle position holes on the same side of the axis of the cylinder is close to the second avoiding through hole, the first side wall is a plane and is arranged at an angle with the axis of the cylinder;
[0009] The second side wall of the second avoiding through hole located on the same side of the axis of the cylinder body as the muscle position hole is a second side wall, which is a plane and is arranged at an angle with the axis of the cylinder body.
[0010] In an embodiment, the first side wall is inclined from a direction close to the first avoiding through hole to a direction close to the second avoiding through hole.
[0011] The second side wall is inclined from a direction close to the second avoiding through hole to a direction close to the first avoiding through hole.
[0012] In an embodiment, the first avoiding through hole and the second avoiding through hole are axially offset along the cylinder body.
[0013] In an embodiment, the third side wall of the first avoiding through hole located on the same side of the axis of the cylinder body as the muscle position hole is away from the second avoiding through hole is an arc surface.
[0014] The fourth side wall of the second avoiding through hole located on the same side of the axis of the cylinder body as the muscle position hole is away from the first avoiding through hole is an arc surface.
[0015] In an embodiment, the two first avoiding through holes located on both sides of the axis of the cylinder body in each group of muscle position holes are symmetrically arranged along the axis of the cylinder body; the two second avoiding through holes located on both sides of the axis of the cylinder body in each group of muscle position holes are symmetrically arranged along the axis of the cylinder body; or
[0016] The two first avoiding through holes located on both sides of the axis of the cylinder body in each group of muscle position holes are coaxially arranged; the two second avoiding through holes located on both sides of the axis of the cylinder body in each group of muscle position holes are coaxially arranged.
[0017] In an embodiment, the two first avoiding through holes located on both sides of the axis of the cylinder body in each group of muscle position holes are symmetrically arranged along the axis of the cylinder body; the two second avoiding through holes located on both sides of the axis of the cylinder body in each group of muscle position holes are symmetrically arranged along the axis of the cylinder body.
[0018] The inclination directions of the first avoiding through holes located on the same side of the axis of the cylinder body in adjacent two groups of muscle position holes are opposite; the inclination directions of the second avoiding through holes located on the same side of the axis of the cylinder body in adjacent two groups of muscle position holes are opposite.
[0019] The application also provides a snake bone assembly, which comprises a driving member and the snake bone structure.
[0020] The driving member is connected with the snake bone structure for driving the snake bone structure to bend.
[0021] In an embodiment, the driving member is a plurality of steel wires, the barrel has a plurality of through holes along its axial direction, and the plurality of steel wires are arranged in the through holes and fixed relative to the position of the insertion end of the barrel, and the steel wires extend out of the through holes and close to the opening of the operating end.
[0022] In an embodiment, at least one end of at least part of the steel wires is fixed relative to the position of the insertion end of the barrel, and the steel wires extend out of the through holes and close to the opening of the operating end; and / or
[0023] The side wall of the insertion end of the barrel is provided with a plurality of fixing holes, and one of the steel wires corresponds to two adjacent fixing holes and two adjacent through holes, and both ends of the steel wire extend out of the through holes and close to the opening of the operating end.
[0024] The snake bone assembly described above, in actual use, the cable of the front-end device is arranged in the operating end through the operating through hole, so that the signal transmission and power supply of the front-end device can be realized, and the snake bone structure is driven to bend by the driving member. Since the side wall of the barrel is provided with a plurality of groups of muscle position holes arranged along its axial direction, each group of muscle position holes includes two first avoiding through holes and two second avoiding through holes, the two first avoiding through holes are arranged on both sides of the axis of the barrel, and the two second avoiding through holes are arranged on both sides of the axis of the barrel, so that the barrel can bend in a direction away from the axis of the barrel and opening to any first avoiding through hole or second avoiding through hole. At the same time, since only a plurality of groups of muscle position holes are arranged along its axial direction, the barrel as a whole is in a connected state and will not be segmented. At the same time, since the first avoiding through hole and the second avoiding through hole located on the same side of the axis of the barrel are communicated along the radial direction of the barrel, the first avoiding through hole and the second avoiding through hole located on the same side of the axis of the barrel can be close to each other, so that the barrel is bent. Since the first avoiding through hole and the second avoiding through hole located on the same side of the axis of the barrel are staggered along the radial direction of the barrel, when the side walls of the first avoiding through hole and the second avoiding through hole close to each other abut each other, the bending deformation of the barrel at this position reaches the maximum, so that a limiting structure can be formed only by the opening shape of the barrel, preventing the bending of the barrel from being excessive, and avoiding the deformation and rupture of the structure of the weak position of the barrel. BRIEF DESCRIPTION OF DRAWINGS
[0025] Figure 1 A schematic view of the snake bone structure of an embodiment.
[0026] Figure 2 A perspective view. Figure 1 A sectional view from one perspective.
[0027] Figure 3 is Figure 1 cutaway view from another perspective.
[0028] Figure 4 schematic view of a serpentine structure according to an embodiment.
[0029] Figure 5 is Figure 4 enlarged view of the insertion end.
[0030] Figure 6 is Figure 5 schematic view from another perspective.
[0031] Figure 7 schematic view of a serpentine structure according to another embodiment.
[0032] Figure 8 is Figure 7 enlarged view of the insertion end.
[0033] Figure 9 is Figure 8 schematic view from another perspective.
[0034] Figure 10 schematic view of a serpentine structure according to yet another embodiment.
[0035] Figure 11 is Figure 10 enlarged view of the insertion end.
[0036] Figure 12 is Figure 11 schematic view from another perspective.
[0037] Figure 13 schematic view of a serpentine assembly according to an embodiment.
[0038] Figure 14 is Figure 13 schematic view from another perspective.
[0039] Figure 15 is Figure 13 schematic view from yet another perspective.
[0040] Figure 16 is Figure 13 enlarged view of the insertion end.
[0041] BRIEF DESCRIPTION OF THE DRAWINGS
[0042] 100 - serpentine structure
[0043] 110 - barrel; 111 - operating through hole; 112 - through hole; 113 - tendon hole; 114 - first avoidance through hole; 115 - second avoidance through hole; 116 - first side wall; 117 - second side wall; 118 - third side wall; 119 - fourth side wall
[0044] 120 - connecting portion;
[0045] 210 - serpentine assembly; 211 - steel wire; 212 - fixing hole;
[0046] 220 - insertion end; 221 - operation end. DETAILED DESCRIPTION
[0047] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application can be practiced in a variety of ways beyond the specific embodiments described herein without departing from the spirit of the present application, and that the present application is not limited to the specific embodiments disclosed below.
[0048] In the description of the present application, it should be understood that, if the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.
[0049] In addition, if the terms "first", "second" appear, these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically limited.
[0050] In the present application, unless otherwise specifically defined and limited, if the terms "mounting", "connecting", "connecting", "fixing" and the like appear, these terms should be broadly understood. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0051] In this application, unless otherwise explicitly specified and limited, if there is a description of a first feature "on" or "under" a second feature, etc., it can mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "on", "above" and "over" the second feature can be that the first feature is directly above or obliquely above the second feature, or it only means that the first feature is horizontally higher than the second feature. The first feature "under", "below" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or it only means that the first feature is horizontally lower than the second feature.
[0052] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there can be a mediating element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be a mediating element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right", and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation.
[0053] Referring to Figure 1 , Figure 1 A structural diagram of a snake bone structure 100 in an embodiment of the present application is shown. The snake bone structure 100 provided by the embodiment of the present application includes a barrel 110 and a connecting portion 120.
[0054] Referring to Figures 1-3 In the snake bone structure 100 described above, the barrel 110 has an operation through hole 111 along its axial direction, and the two ends of the barrel 110 are an operation end 221 and an insertion end 220, respectively. The connecting portion 120 is connected to the insertion end 220 of the barrel 110, and the end of the connecting portion 120 away from the barrel 110 is used to be connected to a device at the front end, and the cable of the device at the front end is arranged through the operation through hole 111 to the operation end 221. The side wall of the barrel 110 is provided with a plurality of groups of muscle position holes 113 arranged in sequence along its axial direction, each group of muscle position holes 113 includes two first avoiding through holes 114 and two second avoiding through holes 115, the two first avoiding through holes 114 are arranged on both sides of the axis of the barrel 110, the two second avoiding through holes 115 are arranged on both sides of the axis of the barrel 110, and the first avoiding through hole 114 and the second avoiding through hole 115 on the same side of the axis of the barrel 110 are communicated along the radial direction of the barrel 110 and staggered.
[0055] Referring to Figures 4-6The cable of the device at the front end is arranged through the operation through hole 111 to the operation end 221 in actual use, so that signal transmission and power supply of the device at the front end can be realized. Since the side wall of the barrel 110 is provided with a plurality of groups of muscle position holes 113 arranged along the axial direction in sequence, each group of muscle position holes 113 includes two first avoiding through holes 114 and two second avoiding through holes 115, the two first avoiding through holes 114 are arranged on both sides of the axis of the barrel 110, and the two second avoiding through holes 115 are arranged on both sides of the axis of the barrel 110, so that the barrel 110 can be bent in a direction away from the axis of the barrel 110 and opening the first avoiding through hole 114 or the second avoiding through hole 115. Since only a plurality of groups of muscle position holes 113 arranged along the axial direction in sequence, the barrel 110 is in a connected state as a whole and cannot be segmented. Since the first avoiding through hole 114 and the second avoiding through hole 115 located on the same side of the axis of the barrel 110 are communicated along the radial direction of the barrel 110, the first avoiding through hole 114 and the second avoiding through hole 115 located on the same side of the axis of the barrel 110 can be close to each other, so that the barrel 110 is bent. Since the first avoiding through hole 114 and the second avoiding through hole 115 located on the same side of the axis of the barrel 110 are staggered along the radial direction of the barrel 110, when the side walls of the first avoiding through hole 114 and the second avoiding through hole 115 close to each other abut each other, the bending deformation amount of the barrel 110 at this position reaches the maximum, so that a limiting structure can be formed only by the opening shape of the barrel 110, preventing the barrel 110 from being bent too much, and avoiding deformation and rupture of the structure of the weak position of the barrel 110.
[0056] Referring to Figure 6 , 9 , 12, in an embodiment, the side wall of the first avoiding through hole 114 located on the same side of the axis of the barrel 110 in each group of muscle position holes 113 close to the second avoiding through hole 115 is a first side wall 116, the first side wall 116 is a plane and is arranged at an angle with the axis of the barrel 110, so that the first avoiding through hole 114. The side wall of the second avoiding through hole 115 located on the same side of the axis of the barrel 110 in each group of muscle position holes 113 close to the first avoiding through hole 114 is a second side wall 117, the second side wall 117 is a plane and is arranged at an angle with the axis of the barrel 110, so that the first side wall 116 does not hinder the process of close to the second side wall 117 due to convexity or arc surface. When the first side wall 116 finally contacts the second side wall 117, since both are planes, the abutting surface is increased, and the bending limiting of the barrel 110 is more stable.
[0057] Referring to Figure 6 , 9, 12, in an embodiment, the first side wall 116 is inclined from a direction close to the first avoiding through hole 114 to a direction close to the second avoiding through hole 115. The second side wall 117 is inclined from a direction close to the second avoiding through hole 115 to a direction close to the first avoiding through hole 114, so that the abutment of the first side wall 116 and the second side wall 117 is more smooth, and no jamming occurs.
[0058] Specifically, when the cylinder body 110 is not bent, the first side wall 116 is parallel to the second side wall 117.
[0059] Referring to Figure 6 , 9 , 12, in an embodiment, the first avoiding through hole 114 and the second avoiding through hole 115 on the same side of the axis of the cylinder body 110 in each group of muscle position holes 113 are staggered along the axial direction of the cylinder body 110. Specifically, referring to Figure 6 , it can be seen that the first avoiding through hole 114 and the second avoiding through hole 115 are staggered up and down and left and right along the axial direction of the cylinder body 110, so that the first side wall 116 and the second side wall 117 can better provide the bending amount of the cylinder body 110 through spacing, and when bending, the first side wall 116 and the second side wall 117 first approach each other, then contact, then slide a certain distance, and finally the cylinder body 110 reaches the bending limit, and the first side wall 116 and the second side wall 117 are completely abutted.
[0060] Referring to Figure 6 , 9 , 12, in an embodiment, the side wall of the first avoiding through hole 114 away from the second avoiding through hole 115 on the same side of the axis of the cylinder body 110 in each group of muscle position holes 113 is a third side wall 118, and the third side wall 118 is an arc surface. The side wall of the second avoiding through hole 115 away from the first avoiding through hole 114 on the same side of the axis of the cylinder body 110 in each group of muscle position holes 113 is a fourth side wall 119, and the fourth side wall 119 is an arc surface, so that when the cylinder body 110 is bent, the arc surface is more smooth for bending and recovery than the right-angled side wall, and the right-angled side wall does not appear to have a large resistance to bending.
[0061] Specifically, the first avoiding through hole 114 and the second avoiding through hole 115 are parallel to the opening plane formed by the circumferential direction of the cylinder body 110 and a certain radial direction of the cylinder body 110.
[0062] Referring to Figures 4-6 , 10-12, in an embodiment, the opening directions of the two first avoiding through holes 114 on both sides of the axis of the cylinder body 110 in each group of muscle position holes 113 are symmetrical along the axis of the cylinder body 110. The opening directions of the two second avoiding through holes 115 on both sides of the axis of the cylinder body 110 in each group of muscle position holes 113 are symmetrical along the axis of the cylinder body 110.
[0063] In this embodiment, the two first avoiding through holes 114 on both sides of the axis of the barrel 110 in each group of the muscle position hole 113 are symmetrically arranged along the axis of the barrel 110. The two second avoiding through holes 115 on both sides of the axis of the barrel 110 in each group of the muscle position hole 113 are symmetrically arranged along the axis of the barrel 110. Referring to Figures 10-11 , the first avoiding through holes 114 on the same side of the axis of the barrel 110 in two adjacent groups of the muscle position hole 113 are oppositely arranged, and the second avoiding through holes 115 on the same side of the axis of the barrel 110 in two adjacent groups of the muscle position hole 113 are oppositely arranged; or referring to Figures 4-5 , the first avoiding through holes 114 on the same side of the axis of the barrel 110 in two adjacent groups of the muscle position hole 113 are oppositely arranged, and the second avoiding through holes 115 on the same side of the axis of the barrel 110 in two adjacent groups of the muscle position hole 113 are oppositely arranged.
[0064] Referring to Figures 7-9 , in another embodiment, the two first avoiding through holes 114 on both sides of the axis of the barrel 110 in each group of the muscle position hole 113 are coaxially arranged. The two second avoiding through holes 115 on both sides of the axis of the barrel 110 in each group of the muscle position hole 113 are coaxially arranged.
[0065] The above embodiments are all for limiting the bending of the barrel 110, and the first avoiding through hole 114 and the second avoiding through hole 115 can also be arranged in other ways, which are not described herein.
[0066] Referring to Figures 13-15 , the application also provides a snake bone assembly 210, which comprises a driving member and a snake bone structure 100.
[0067] The driving member is connected with the snake bone structure 100 and used for driving the snake bone structure 100 to bend.
[0068] The cable of the device at the front end is arranged through the operation through hole 111 to the operation end 221 in actual use, so that the signal transmission and power supply of the device at the front end can be realized, and the snake bone structure 100 is driven to bend by the driving member. Since the side wall of the barrel 110 is provided with a plurality of groups of muscle position holes 113 arranged along the axial direction in sequence, each group of muscle position holes 113 includes two first avoiding through holes 114 and two second avoiding through holes 115, the two first avoiding through holes 114 are arranged on the two sides of the axis of the barrel 110, and the two second avoiding through holes 115 are arranged on the two sides of the axis of the barrel 110, so that the barrel 110 can bend in the direction away from the axis of the barrel 110 and opening the first avoiding through hole 114 or the second avoiding through hole 115. Since only a plurality of groups of muscle position holes 113 arranged along the axial direction in sequence, the barrel 110 is in a connected state as a whole and cannot be segmented. Since the first avoiding through hole 114 and the second avoiding through hole 115 located on the same side of the axis of the barrel 110 are communicated along the radial direction of the barrel 110, the first avoiding through hole 114 and the second avoiding through hole 115 located on the same side of the axis of the barrel 110 can be close to each other, so that the barrel 110 is bent. Since the first avoiding through hole 114 and the second avoiding through hole 115 located on the same side of the axis of the barrel 110 are staggered along the radial direction of the barrel 110, when the side walls of the first avoiding through hole 114 and the second avoiding through hole 115 close to each other abut each other, the bending deformation amount of the barrel 110 at this position reaches the maximum. Therefore, a limiting structure can be formed only by the opening shape of the barrel 110 to prevent excessive bending of the barrel 110 and avoid deformation and rupture of the structure at the weak position of the barrel 110.
[0069] Referring to Figures 13-15 In an embodiment, the driving member is a plurality of steel wires 211, the barrel 110 has a plurality of through holes 112 along the axial direction, the plurality of steel wires 211 are arranged through the through holes 112 and fixed relative to the position of the insertion end 220 of the barrel 110, and the steel wires 211 extend out of the through holes 112 and close to the opening of the operation end 221. Therefore, different parts of the steel wires 211 extending out of the through holes 112 and close to the opening of the operation end 221 can be pulled, so that the insertion end 220 of the barrel 110 is pulled to bend the barrel 110.
[0070] In an embodiment, one end of part of the steel wires 211 is fixed relative to the position of the insertion end 220 of the barrel 110, the steel wires 211 extend out of the through holes 112 and close to the opening of the operation end 221, the side wall of the insertion end 220 of the barrel 110 is provided with a plurality of fixing holes 212, one of the steel wires 211 corresponds to two adjacent fixing holes 212 and two adjacent through holes 112, and both ends of the steel wire 211 extend out of the through holes 112 and close to the opening of the operation end 221.
[0071] In another embodiment, one end of the steel wire 211 is fixed opposite to the insertion end 220 of the barrel 110, and the steel wire 211 extends out of the through hole 112 near the opening of the operating end 221.
[0072] Referring to Figure 16 In yet another embodiment, the side wall of the insertion end 220 of the barrel 110 is provided with a plurality of fixing holes 212, and one of the steel wires 211 corresponds to two adjacent fixing holes 212 and two adjacent through holes 112, and both ends of the steel wire 211 extend out of the through hole 112 near the opening of the operating end 221.
[0073] The above embodiments are all connected with the barrel 110 and achieve the bending of the barrel 110 in the direction of the steel wire 211, and other ways of connecting the steel wire 211 or installing bending shafts at various positions of the barrel 110 can also be used to achieve the bending of the barrel 110 by electric drive, and the specific ways are not described here.
[0074] The technical features of the above embodiments can be combined arbitrarily, and to make the description concise, all possible combinations of the technical features in the above embodiments are not described, but as long as the combinations of the technical features do not exist, they should be considered as the scope of the present application.
[0075] The above embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the scope of the present application. Therefore, the scope of the patent of the present application should be subject to the appended claims.
Claims
1. A serpentine bone structure, characterized in that, The snake bone structure comprises a cylinder and a connecting part; The cylinder has an operation through hole along its axial direction, and two ends of the cylinder are an operation end and an insertion end, respectively; The connecting part is connected with the insertion end of the cylinder, one end of the connecting part away from the cylinder is used for connecting with a device at the front end, a cable of the device at the front end passes through the operation through hole to the operation end; a side wall of the cylinder is provided with a plurality of groups of muscle position holes arranged in sequence along the axial direction of the cylinder, each group of muscle position holes comprises two first avoiding through holes and two second avoiding through holes, the two first avoiding through holes are arranged on both sides of the axis of the cylinder, the two second avoiding through holes are arranged on both sides of the axis of the cylinder, the first avoiding through hole and the second avoiding through hole on the same side of the axis of the cylinder are communicated along the radial direction of the cylinder and are staggered.
2. The serpentine bone structure of claim 1, wherein, The side wall of the first avoiding through hole on the same side of the axis of the cylinder in each group of muscle position holes is close to the second avoiding through hole, and the first side wall is a plane and is arranged at an angle with the axis of the cylinder; The side wall of the second avoiding through hole on the same side of the axis of the cylinder in each group of muscle position holes is close to the first avoiding through hole, and the second side wall is a plane and is arranged at an angle with the axis of the cylinder.
3. The serpentine bone structure of claim 2, wherein, The first side wall is inclined from the direction close to the first avoiding through hole to the direction close to the second avoiding through hole; The second side wall is inclined from the direction close to the second avoiding through hole to the direction close to the first avoiding through hole.
4. The serpentine bone structure of claim 2, wherein, The first avoiding through hole and the second avoiding through hole are staggered along the axial direction of the cylinder.
5. The serpentine bone structure of claim 1, wherein, The side wall of the first avoiding through hole on the same side of the axis of the cylinder in each group of muscle position holes is away from the second avoiding through hole, and the third side wall is a curved surface; The side wall of the second avoiding through hole on the same side of the axis of the cylinder in each group of muscle position holes is away from the first avoiding through hole, and the fourth side wall is a curved surface.
6. The serpentine bone structure of claim 1, wherein, The opening direction of the two first avoiding through holes on both sides of the axis of the cylinder in each group of muscle position holes is symmetrical along the axial direction of the cylinder; the opening direction of the two second avoiding through holes on both sides of the axis of the cylinder in each group of muscle position holes is symmetrical along the axial direction of the cylinder; or The opening direction of the two first avoiding through holes on both sides of the axis of the cylinder in each group of muscle position holes is coaxial; the opening direction of the two second avoiding through holes on both sides of the axis of the cylinder in each group of muscle position holes is coaxial.
7. The serpentine bone structure of claim 1, wherein, The opening direction of the two first avoiding through holes on both sides of the axis of the cylinder in each group of muscle position holes is symmetrical along the axial direction of the cylinder; the opening direction of the two second avoiding through holes on both sides of the axis of the cylinder in each group of muscle position holes is symmetrical along the axial direction of the cylinder; The inclination direction of the first avoiding through hole on the same side of the axis of the cylinder in the muscle position holes of adjacent two groups is opposite; the inclination direction of the second avoiding through hole on the same side of the axis of the cylinder in the muscle position holes of adjacent two groups is opposite.
8. A serpentine bone assembly, characterized by, The snake bone assembly comprises a driving member and the snake bone structure according to any one of claims 1-7. The driving member is connected with the snake bone structure for driving the snake bone structure to bend.
9. The serpentine bone assembly of claim 8, wherein, The driving member is a plurality of steel wires, the cylinder has a plurality of through holes along its axial direction, and the plurality of steel wires are arranged in the through holes and fixed relative to the position of the insertion end of the cylinder, and the steel wires are arranged outside the through holes and close to the opening of the operation end.
10. The serpentine bone assembly of claim 9, wherein, At least one end of at least part of the steel wires is fixed relative to the position of the insertion end of the cylinder, and the steel wires are arranged outside the through holes and close to the opening of the operation end; and / or The side wall of the insertion end of the cylinder is provided with a plurality of fixing holes, one of the steel wires corresponds to two adjacent fixing holes and two adjacent through holes, and both ends of the steel wire are arranged outside the through holes and close to the opening of the operation end.