Method for manufacturing a serpentine structure and jig

Abstract

The application discloses a preparation method and a clamp of a snake bone structure and relates to the technical field of medical devices. The preparation method of the snake bone comprises the following steps: preparing a pipe body, the pipe body comprising a plurality of sequentially connected bone segments, two adjacent bone segments being provided with an avoiding gap, and the two adjacent bone segments being capable of deflecting to a first radial side; providing a limiting wool material, the limiting wool material being provided with an outer diameter smaller than an inner diameter of the pipe body; fixing the limiting wool material to an inner wall of the first radial side of the bone segment, and each bone segment being fixedly connected with the limiting wool material; and cutting the limiting wool material to form a limiting piece, at least one end of the limiting piece being protruded from an end face of the bone segment forming the avoiding gap, and in the case that the pipe body is bent, the two adjacent bone segments can be limited by the limiting piece on the same side.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, and in particular to a preparation method of a snake bone structure and a clamp. BACKGROUND

[0002] An endoscope is a commonly used medical device, which is an inspection device capable of directly entering a natural duct of a human body to provide sufficient diagnostic information for a doctor to treat a disease. The endoscope includes an insertion portion, which can enter the human body through a body cavity or a surgically avoided gap.

[0003] In the related art, the insertion portion includes a main body portion, a front end assembly, and a snake bone. One end of the snake bone in the extension direction is connected to the distal end of the main body portion. The front end assembly is arranged at the second end of the snake bone in the extension direction. The snake bone includes a plurality of bone segments, and the plurality of bone segments are rotationally connected to each other to adjust the orientation of the front end assembly by relative rotation between two adjacent bone segments, thereby adapting to a curved body cavity or adjusting the visual field of the front end assembly.

[0004] The edge portions of two adjacent bone segment members in the snake bone structure are prone to be nested. In the related art, the preparation of the snake bone structure capable of preventing the nesting is difficult, thereby resulting in low preparation efficiency and high production cost of the snake bone structure capable of preventing the nesting. SUMMARY

[0005] The present application discloses a preparation method of a snake bone structure and a clamp to solve the problem of difficulty in preparing a snake bone structure capable of preventing nesting in the related art.

[0006] To solve the above problems, the technical scheme adopted by the present application is as follows:

[0007] In a first aspect, the present application provides a preparation method of a snake bone structure. The preparation method of the snake bone structure includes the following steps: preparing a tube body, the tube body including a plurality of sequentially connected bone segments, the two adjacent bone segments having an avoidance gap therebetween, and the two adjacent bone segments being deflectable relative to a first radial side; providing a limiting material, the limiting material having an outer diameter smaller than the inner diameter of the tube body; fixing the limiting material to the inner wall of the first radial side of the bone segment, and each bone segment being fixedly connected to the limiting material; cutting the limiting material to form a limiting member, at least one end of the limiting member protruding from the end face of the bone segment forming the avoidance gap, and in the case of bending of the tube body, the two adjacent bone segments being stoppable by the limiting member on the same side.

[0008] The technical scheme adopted by the present application can achieve the following beneficial effects:

[0009] The method for manufacturing the snake bone structure provided in the application comprises the following steps: fixing a limiting material for forming a limiting piece on a pipe body, and then cutting the limiting material to form the limiting piece. In this way, the limiting piece on one side of the pipe body is only aligned once, and then each limiting piece is aligned and fixed with the inner wall of the first side of the pipe body, thereby reducing the difficulty of manufacturing the snake bone structure. Furthermore, the limiting material is connected with each bone segment, and then the limiting material is cut, thereby improving the consistency of the installation position of the limiting piece on the same side of the snake bone structure, and improving the installation accuracy of the snake bone structure.

[0010] According to some optional embodiments, the limiting material is fixed on the first side of the bone segment in the radial direction, comprising the following steps: abutting the limiting material against the first side of each bone segment in the radial direction; and welding the limiting material with each bone segment.

[0011] According to some optional embodiments, the limiting material is abutted against the first side of each bone segment in the radial direction, comprising the following steps: installing the limiting material on an auxiliary shaft, the outer diameter of the auxiliary shaft is matched with the inner diameter of the pipe body, the outer peripheral wall of the auxiliary shaft is matched with the inner wall of the pipe body, and the auxiliary shaft has an installation groove for installing the limiting material; inserting the auxiliary shaft with the installed limiting material into the pipe body, so that the outer peripheral wall of the limiting material is abutted against the groove wall of the installation groove and the inner wall of the pipe body; and adjusting the relative position of the auxiliary shaft and the pipe body, so that the limiting material is abutted against the inner wall of the first side of the pipe body.

[0012] According to some optional embodiments, the first end of the pipe body in the extension direction has a positioning groove. The auxiliary shaft is provided with a positioning protrusion matched with the positioning groove. When the positioning protrusion is embedded in the positioning groove, one installation groove of the auxiliary shaft is opposite to the inner wall of the first side of the pipe body. Adjusting the relative position of the auxiliary shaft and the pipe body, so that at least part of the positioning protrusion is embedded in the positioning groove.

[0013] According to some optional embodiments, the two adjacent bone segments can be deflected towards the second side which is opposite to the first side in the radial direction. Before cutting the limiting material to form the limiting piece, the method for manufacturing the snake bone structure further comprises the following steps: fixing the limiting material on the inner wall of the second side of the bone segment in the radial direction, and each bone segment is fixedly connected with the limiting material.

[0014] According to some optional embodiments, the auxiliary shaft has two installation grooves. The two installation grooves are located on the opposite sides of the auxiliary shaft. In the two installation grooves, when the limiting material installed in one of the installation grooves is abutted against the inner wall of the first side of the pipe body, the limiting material installed in the other installation groove is abutted against the inner wall of the second side of the pipe body.

[0015] According to some optional embodiments, welding the limiting material to each bone segment comprises the following steps: welding the limiting material to the bone segment at the first end in the extending direction of the tube body; welding the limiting material to the bone segment at the second end in the extending direction of the tube body; and welding the limiting material to the bone segment at the middle part in the extending direction of the tube body.

[0016] According to some optional embodiments, welding the limiting material to each bone segment comprises the following steps: welding the limiting material to the first end in the extending direction of the bone segment; welding the limiting material to the second end in the extending direction of the bone segment; and welding the limiting material to the middle part in the extending direction of the bone segment.

[0017] In another aspect, the present application also provides a preparation jig for a snake bone structure. The preparation jig for the snake bone structure can be used in the preparation method for the snake bone structure provided by the present application. The snake bone structure comprises a tube body and a limiting member. The preparation jig for the snake bone structure comprises an auxiliary shaft. The outer diameter of the auxiliary shaft is adapted to the inner diameter of the tube body. The outer peripheral wall of the auxiliary shaft is in contact with the inner wall of the tube body. The auxiliary shaft has a mounting groove for mounting a limiting material. The limiting material is used to prepare the limiting member. In the case that the auxiliary shaft with the mounted limiting material is inserted into the tube body, the outer peripheral wall of the limiting material is in abutment with the groove wall of the mounting groove and the inner side wall of the tube body, respectively.

[0018] The preparation jig for the snake bone structure provided by the above embodiments can provide limiting for the limiting material by using the mounting groove provided on the auxiliary shaft during the assembly of the limiting material to the tube body, thereby improving the assembly precision of the limiting material and the tube body.

[0019] According to some optional embodiments, the auxiliary shaft has two mounting grooves, which are located at two opposite sides of the auxiliary shaft, respectively.

[0020] According to some optional embodiments, the mounting groove is an arc-shaped groove.

[0021] According to some optional embodiments, one end of the auxiliary shaft has a positioning protrusion, and one end of the tube body has a positioning groove. In the case that the auxiliary shaft is mounted to the tube body and the positioning protrusion is located in the positioning groove, the positioning protrusion is in abutment with the positioning groove. In the two mounting grooves, the limiting material mounted in one groove is in abutment with the inner wall of the first side of the tube body, and the limiting material mounted in the other groove is in abutment with the inner wall of the second side of the tube body. BRIEF DESCRIPTION OF DRAWINGS

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a flowchart of a method for preparing a snake-bone structure provided in some optional embodiments of this application;

[0024] Figure 2 This is a schematic diagram of the limiting material being fixed to the first and second sides of the tube body according to some optional embodiments of this application;

[0025] Figure 3 This is a schematic diagram of the auxiliary axis provided in some optional embodiments of this application. Figure 1 ;

[0026] Figure 4 This is a schematic diagram of the auxiliary axis provided in some optional embodiments of this application. Figure 2 ;

[0027] Figure 5 This is a schematic diagram of a snake-bone structure provided in some optional embodiments of this application;

[0028] Figure 6 yes Figure 5 Enlarged view of point A in the middle;

[0029] Figure 7 This is a schematic diagram of two adjacent limiting members stopping and limiting in some optional embodiments of this application.

[0030] Explanation of reference numerals in the attached figures:

[0031] 10-Limiting material; 100-Limiting component; 110-Limiting surface; 101-Wire hole; 200-Tube body; 210-Bone segment; 211-Helical surface; 212-Rotating part; 201-Avoidance notch; 202-Positioning groove; 400-Auxiliary shaft; 401-Mounting groove; 410-Positioning protrusion. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0033] The terms "first", "second", and the like in the description and in the claims of the present application are used for distinguishing between similar objects and are not necessarily used to describe a particular sequential or chronological order. It is to be understood that the use of the term "first", "second", and the like does not limit the order in which the objects are used, unless explicitly stated otherwise. The objects are typically one of a number of similar objects, and thus the use of "first", "second", and the like is not intended to limit the number of objects. For example, a first object can be one of several objects, and thus "first" does not imply that the object is one among the first of a number of objects. In addition, the use of "and / or", "and", "or", and the like in the description and in the claims of the present application is intended to represent that the objects so conjoined can exist alone or in any combination. The use of "and / or", "and", "or", and the like is intended to encompass the meaning of "and / or", "and", "or", and the like as set forth above.

[0034] The present application will be described in detail below with reference to the accompanying drawings. Figures 1 to 7 The present application will be described in detail below with reference to the accompanying drawings.

[0035] In a first aspect, the present application provides a method for manufacturing a snake bone structure. In an example, the method can be used to manufacture a snake bone structure that can prevent the first and the last segments from being connected.

[0036] Referring to Figure 1 The method for manufacturing a snake bone structure provided by the present application includes:

[0037] In step S100, a tube body is manufactured. The tube body includes a plurality of bone segments connected in sequence. Adjacent two bone segments have an avoiding gap therebetween, and the adjacent two bone segments can be deflected relative to a first radial side.

[0038] The tube body 200 is a basic structural member to provide a mounting base for other components. The avoiding gap is formed between adjacent two bone segments to allow the two adjacent bone segments to be deflected relative to each other, and thus the active bending or turning of the snake bone structure can be achieved by rotating the two adjacent bone segments to be deflected relative to each other.

[0039] In some optional embodiments, the shape of the tube body 200 can be, but is not limited to, a spiral shape. In some optional embodiments, the tube body 200 can also be formed by connecting the cylindrical bone segments 210 in sequence and rotating the adjacent bone segments 210 end to end. In some optional embodiments, the bone segments 210 can also be connected by being riveted.

[0040] In some optional embodiments, the shape of the tube body 200 is a spiral shape. Each bone segment 210 is one turn around the axis of the tube body 200. In an example, when the tube body 200 is in a straight state, the axis of the tube body 200 refers to the central axis of the tube body 200. In an example, the axis of the tube body 200 can be the central axis of the tube body 200. Figure 6axis L1 shown in FIG. 1. In some alternative embodiments, the plurality of bone segments 210 can be an integral structure. Specifically, the tube body 200 with the plurality of bone segments 210 can be formed by a cutting process during the manufacturing of the tube body 200.

[0041] Referring to Figure 5 In some alternative embodiments, a helical clearance gap 201 is formed between two adjacent bone segments 210 to provide clearance space for the deflection of the two adjacent bone segments 210, so that the tube body 200 can be deflected to one or more sides.

[0042] In some alternative embodiments, the step S100 of manufacturing the tube body includes the following steps: a step S110 of providing a tube body blank. Exemplarily, the tube body blank can be but is not limited to a metal tube. A step S120 of laser cutting the tube body blank to form the tube body.

[0043] A step S300 of providing a limiting blank. The limiting blank has an outer diameter smaller than an inner diameter of the tube body.

[0044] According to some alternative embodiments, the limiting blank 10 has an outer diameter smaller than one half of an inner diameter of the tube body 200, so that two limiting blanks 10 can be accommodated in the tube body 200 to limit the deflection of the tube body 200 in two different directions. Exemplarily, the limiting blank 10 can be but is not limited to a metal tube.

[0045] A step S400 of fixing the limiting blank to the inner wall of the first side of the bone segment in the radial direction, and each bone segment is fixedly connected with the limiting blank.

[0046] Exemplarily, the limiting blank can be fixed to the inner wall of the bone segment by but is not limited to welding. For example, the limiting blank can also be fixed to each bone segment by clamping, riveting, etc.

[0047] A step S500 of cutting the limiting blank to form a limiting member, at least one end of the limiting member protrudes from the end face of the bone segment forming the clearance gap, and in the case of bending of the tube body, two adjacent bone segments can be limited by the limiting member on the same side.

[0048] Exemplarily, as shown in Figure 5 and Figure 6 In the case of forming a helical clearance gap 201 between two adjacent bone segments 210, the end face of the bone segment 210 forming the clearance gap 201 is a helical surface 211.

[0049] Referring to Figures 5 to 7 At least one end of the extending direction of the limiting member 100 protrudes from the helical surface 211. As shown in Figure 3As shown, in the case of bending of the tube body 200, two adjacent bone segments 210 can be limited by the same side stopper 100. For example, the end of the extension direction of the stopper 100 is provided with a stop surface 110. Referring to Figure 6 and Figure 7 In some optional embodiments, two adjacent stoppers 100 on the same side are limited by the stop surface 110. Specifically, in the case of deflection of the snake bone structure to the maximum bending angle on the first side, the two adjacent stoppers 100 on the first side of the bone segment 210 are limited by the stop surface 110. In the case of deflection of the snake bone structure to the maximum bending angle on the second side, the two adjacent stoppers 100 on the second side of the bone segment 210 are limited by the stop surface 110.

[0050] In some optional embodiments, the stop surface 110 is a section after cutting of the stopper 10. For example, the stop surface 110 is obliquely arranged to enable the two stoppers 100 on the same side to be limited by surface-to-surface contact.

[0051] Referring to Figure 1 The bone segment 210 has a rotating portion 212. The rotating portion 212 is located between the two stoppers 100. The two adjacent bone segments 210 are rotatably connected by the rotating portion 212, and the two adjacent bone segments 210 can be deflected to the first side or the second side of the bone segment 210 about the first axis. For example, the rotating portion 212 can be formed by cutting the tube body 10.

[0052] According to some optional embodiments, the stop surface 110 of the stopper 100 in the extension direction is parallel to the first axis. During deflection and bending of the snake bone structure, the stopper 100 rotates in the first plane. In this way, the stop surface 110 is perpendicular to the first plane. Therefore, this embodiment is beneficial to prevent the two adjacent stoppers 100 on the same side from being limited and then relatively sliding, and is further beneficial to prevent the two stoppers 100 from being misaligned with each other, thereby improving the reliability of the limitation of the two stoppers 100 on the same side.

[0053] During bending of the snake bone structure, the end surface of one of the two adjacent bone segments 210 slides along the end surface of the other bone segment 210 to the inside of the bone segment 210. In the above-mentioned embodiments, the end of the stopper 100 protrudes from the helical surface 211, thereby enabling the stopper 100 to be limited on the inner wall of the bone segment 210, so as to avoid embedding of part of the bone segment 210 into the adjacent bone segment 210. In addition, in the case of deflection of the two adjacent bone segments 210 to the maximum bending angle, the stoppers 100 on the same side of the two adjacent bone segments 210 are limited. Therefore, the two adjacent bone segments 210 can be prevented from being deflected to too large an angle by the two stoppers 100 on the same side, so as to avoid embedding of the two adjacent bone segments 210 end to end due to too large a torsional deformation between the two adjacent bone segments 210.

[0054] The two limiters 100 on the same side of the two adjacent bone segments 210 in the snake bone structure provided by the above embodiments not only can limit the maximum deflection angle between the two bone segments 210 to avoid excessive bending between the two adjacent bone segments 210, but also can support each other between the same side to make the pulling force of the traction rope acting on the bone segment 210 at the distal end of the snake bone structure be transmitted in sequence through the limiters 100 on the same side, thereby limiting the maximum deflection angle of any two adjacent bone segments 210 and improving the controllability of the deflection angle of different segments of the snake bone structure.

[0055] In some optional embodiments, the structure of the limiting material 10 is a tubular structure. The lumen in the tubular structure can be used to pass the traction rope in the endoscope. For example, in the case of the snake bone structure with the endoscope, the traction rope in the endoscope can be arranged along the lumen in the limiter 100. Specifically, the limiters 100 on the same side of the snake bone structure share one traction rope. In this way, the traction rope can guide the two adjacent limiters 100 to stop and limit during the bending of the snake bone structure, and can also provide resistance to prevent the deflection of the two adjacent bone segments 210. In addition, the force of the traction rope acting on the snake bone structure can form a pressing force between the two limiters 100, thereby improving the reliability of the two limiters 100 to stop and limit, and further preventing the two adjacent bone segments 210 from being nested end to end.

[0056] In the endoscope preparation method provided by the above embodiments, the limiters 100 on the same side of the tube body 200 are formed by cutting the same limiting material 10. Moreover, the limiting material 10 for preparing the limiters 100 on the same side of the tube body 200 is first welded and fixed to each bone segment 210, and then the cutting operation is performed, thereby reducing the welding difficulty of each bone segment 210 and the limiter 100, improving the assembly accuracy of the limiters 100 on the same side, and preventing the two adjacent bone segments 210 from being nested end to end.

[0057] According to some optional embodiments, the step S400 of fixing the limiting material to the first side of the bone segment in the radial direction includes the following steps:

[0058] The step S410 of stopping and limiting the limiting material to the first side of each bone segment in the radial direction is to prepare for welding the limiting material 10 and the bone segment 210.

[0059] The step S430 of welding and fixing the limiting material and each bone segment. There are many ways of welding, such as gas flame welding, electric arc welding, laser welding, electron beam welding, friction welding, and ultrasonic welding, etc. Therefore, the specific type of welding of the limiting material 10 and the bone segment 210 is not limited in the present embodiment.

[0060] In some optional embodiments, the step S410 of abutting the spacer against the first side of each bone segment in the radial direction comprises the following steps:

[0061] The step S411 of installing the spacer on the auxiliary shaft. The outer diameter of the auxiliary shaft 400 is adapted to the inner diameter of the tube. The outer peripheral wall of the auxiliary shaft is in contact with the inner wall of the tube. The auxiliary shaft has an installation groove for installing the spacer.

[0062] With reference to Figure 3 For example, the spacer 10 is assembled into the installation groove 401 to limit the position of the spacer 10 through the installation groove 401, thereby facilitating the abutment of the spacer 10 against the first side of the bone segment 210 in the radial direction through the auxiliary shaft 400.

[0063] The step S413 of inserting the auxiliary shaft with the spacer into the tube so that the outer peripheral wall of the spacer is abutted against the groove wall of the installation groove and the inner wall of the tube, respectively.

[0064] For example, the tube 200 is first adjusted to be in a straight state, i.e., the tube 200 is adjusted to extend in a straight direction, so as to facilitate the assembly of the auxiliary shaft 400 with the spacer 10 into the tube 200. In the above-mentioned embodiments, the auxiliary shaft 400 can not only provide support for the spacer 10 and limit the position of the spacer 10, but also prevent the spacer 10 from moving relative to the bone segment 210 during welding.

[0065] The step S415 of adjusting the relative position of the auxiliary shaft and the tube so that the spacer is abutted against the inner wall of the first side of the tube. In this way, after the auxiliary shaft 400 and the spacer 10 are assembled into the tube 200, the position of the auxiliary shaft 400 and the spacer 10 is adjusted again so that the spacer is abutted against the inner wall of the first side of the tube, thereby ensuring assembly accuracy.

[0066] The method for manufacturing the snake bone structure provided in the above-mentioned embodiments utilizes the auxiliary shaft 400 to provide support for the spacer 10 and limit the position of the spacer 10, which not only facilitates the abutment of the spacer 10 against the bone segment 210 during welding, but also prevents the spacer 10 from moving relative to the bone segment 210 during welding. Therefore, the method for manufacturing the snake bone provided in this embodiment facilitates the improvement of the assembly accuracy of the spacer 10 and the bone segment 210 and the reduction of the welding difficulty of the spacer 10 and the bone segment 210.

[0067] In some optional embodiments, the first end of the extending direction of the tube body has a positioning groove 202. The auxiliary shaft is provided with a positioning protrusion 410 which is positioned in cooperation with the positioning groove 202. In the case that the positioning protrusion 410 is embedded in the positioning groove 202, one mounting groove of the auxiliary shaft is opposite to the inner wall of the first side of the tube body. In this way, during the assembly of the limiting material 10 and the tube body 200, the positioning protrusion 410 and the positioning groove 202 can be used for positioning to ensure that the limiting material is stopped against the inner wall of the first side of the tube body. For example, step S415, adjusting the relative position of the auxiliary shaft and the tube body to the limiting material being stopped against the inner wall of the first side of the tube body includes: step S4151, adjusting the relative position of the auxiliary shaft and the tube body to at least part of the positioning protrusion 410 being embedded in the positioning groove 202.

[0068] In the preparation method provided by the above embodiments, after the auxiliary shaft 400 on which the limiting material 10 is mounted is inserted into the tube body 200, the limiting material 10 and the tube body 200 can be aligned only by adjusting the position of the auxiliary shaft 400 so that the positioning protrusion 410 is embedded in the positioning groove 202. In addition, the embedding of the positioning protrusion 410 in the positioning groove 202 can also prevent the auxiliary shaft 400 from rotating relative to the tube body 200, thereby benefiting the prevention of the rotation of the limiting material 10 relative to the bone segment 210 during the welding of the limiting material 10 and the bone segment 210, and improving the assembly accuracy of the limiting material 10 and the bone segment 210.

[0069] According to some optional embodiments, in the snake bone structure, two adjacent bone segments can be deflected relative to the radially opposite second side, which is opposite to the first side. In this way, the snake bone structure can be bent to the radially opposite two sides, thereby benefiting the improvement of the bending deflection range of the snake bone structure to adapt to more body cavities and achieve a larger visual angle range.

[0070] Before cutting the limiting material to form the limiting member in step S500, the preparation method of the snake bone structure further includes:

[0071] Step S700, fixing the limiting material on the inner wall of the second side of the bone segment, and each bone segment is fixedly connected with the limiting material. In this way, the limiting material on the first side and the second side of the bone segment 210 can be cut in sequence or simultaneously. In some optional embodiments, the limiting material 10 on the first side of the bone segment 210 and the limiting material 10 on the second side of the bone segment 210 are cut after the assembly of the limiting material 10 on the first side of the bone segment 210 and the limiting material 10 on the second side of the bone segment 210 is completed, which is beneficial to reducing the switching times between different processes in the preparation process of the snake bone structure and improving the preparation accuracy of the snake bone structure.

[0072] According to some optional embodiments, the auxiliary shaft has two installation grooves 401. The two installation grooves 401 are respectively located at two opposite sides of the auxiliary shaft 200. In this way, in the two installation grooves 401, one of the installation grooves 401 has the limiting hair 10 installed therein abutting against the inner wall of the first side of the pipe body 200, and the other of the installation grooves 401 has the limiting hair 10 installed therein abutting against the inner wall of the second side of the pipe body 200.

[0073] In the above embodiments, the two opposite sides of the auxiliary shaft 400 are respectively provided with the installation grooves, which is beneficial to further reduce the difficulty of assembling the limiting hair 10 and the pipe body 200, and is also beneficial to improve the assembly accuracy of the relative positions between the related limiting hairs 10, so as to ensure that the two limiting hairs 10 can respectively abut against the inner walls of the two opposite sides of the pipe body 200. In addition, in the above embodiments, the adjustment of the relative position between the other limiting hair 10 and the pipe body 200 can be realized only by adjusting the relative position between one of the two limiting hairs 10 and the pipe body 200, which is further beneficial to reduce the difficulty of aligning the two limiting hairs 10 and the pipe body 200.

[0074] In some optional embodiments, the installation grooves 401 are arranged along the extension direction of the auxiliary shaft 400. For example, the installation grooves 401 can be, but are not limited to, arc-shaped grooves, V-shaped grooves, trapezoidal grooves, rectangular grooves, etc.

[0075] According to some optional embodiments, the installation grooves 401 are arc-shaped grooves, and the radius corresponding to the installation grooves 401 is substantially equal to the diameter of the limiting hair 10. In the case that the limiting hair 10 is installed in the installation groove 401, it is beneficial to improve the limiting ability and limiting accuracy of the installation groove 401 to the limiting hair 10, and is beneficial to avoid deformation of the limiting hair 10 under stress or heat.

[0076] According to some optional embodiments, the step S430 of welding and fixing the limiting hair to each bone segment includes the following steps:

[0077] The step S431 of welding the limiting hair to the bone segment located at the first end in the extension direction of the pipe body.

[0078] The step S433 of welding the limiting hair to the bone segment located at the second end in the extension direction of the pipe body.

[0079] The step S435 of welding the limiting hair to the bone segment located between the first end and the second end in the extension direction of the pipe body.

[0080] In the above embodiments, during the welding of the limiting hair 10 and the pipe body 200, the bone segments 210 located at the two ends of the pipe body 200 are first welded to the limiting hair 10, which is beneficial to provide support for the pipe body 100 by the limiting hair 10, and is further beneficial to prevent the bending deformation of the pipe body 100 from affecting the assembly accuracy of the limiting hair 10 and the pipe body 200.

[0081] According to some optional embodiments, the step S430 of welding the spacer material to each bone segment includes:

[0082] The step S432 of welding a first end of the bone segment extension direction to the spacer material.

[0083] The step S434 of welding a second end of the bone segment extension direction to the spacer material.

[0084] The step S436 of welding a middle part of the bone segment extension direction to the spacer material.

[0085] The above embodiments, in the process of welding the spacer material 10 and the bone segment 210, the two ends of the bone segment 210 in the extension direction are welded to the spacer material 10, which is beneficial to improve the assembly precision between the bone segment 210 and the spacer material 10.

[0086] On the other hand, the application provides a preparation clamp of a snake bone structure. The preparation clamp of the snake bone structure can be used to prepare a snake bone structure that can prevent head-to-tail embedding. For example, the preparation clamp of the snake bone structure can be used in the preparation method of the snake bone structure provided by the application.

[0087] For example, the snake bone structure includes a pipe body 200 and a spacer 100. The pipe body 200 includes a plurality of sequentially connected bone segments 210, and the adjacent two bone segments 210 have an avoiding gap 201 therebetween, and the adjacent two bone segments 210 can be deflected relative to the first side of the radial direction.

[0088] Referring to Figure 3 and Figure 4 The preparation clamp of the snake bone structure includes an auxiliary shaft 400. The outer diameter of the auxiliary shaft 400 is matched with the inner diameter of the pipe body 200. For example, the outer peripheral wall of the auxiliary shaft 400 is in contact with the inner wall of the pipe body 200. The auxiliary shaft 400 has a mounting groove 401 for mounting the spacer material 10. The spacer material 10 is used to prepare the spacer 100. In the case that the auxiliary shaft 400 with the spacer material 10 mounted is inserted into the pipe body 200, the outer peripheral wall of the spacer material 10 is respectively stopped on the groove wall of the mounting groove 401 and the inner side wall of the pipe body 200.

[0089] In the above embodiments, the auxiliary shaft 400 can not only provide support for the spacer material 10 to avoid separation of the spacer material 10 from the inner wall of the pipe body 200 during welding, thereby facilitating welding of the pipe body 200 and the spacer material 10. In addition, the mounting groove 401 can also limit the spacer material 10 to avoid deflection of the spacer material 10 relative to the pipe body 200 during welding, thereby facilitating mounting of the spacer material 10 along the axial direction of the pipe body 200 to the inner wall of the pipe body 200.

[0090] Referring to Figure 3 According to some optional embodiments, the auxiliary shaft 400 has two installation grooves 401. The two installation grooves 401 are respectively located at two opposite sides of the auxiliary shaft 400. For example, the installation grooves 401 are arranged along the axial direction of the auxiliary shaft 400 on the outer peripheral wall of the auxiliary shaft 400.

[0091] In some optional examples, the shape of the installation groove 401 is matched with the shape of the limiting material 10. For example, the limiting material 10 is a metal pipe. The installation groove 401 can be arranged as a circular arc-shaped groove, and the inner diameter of the installation groove 401 is substantially equal to the outer diameter of the limiting material 10, so that the limiting material 10 can be inserted into the installation groove 401. Further optionally, as shown in Figure 6 In the case that the limiting material 10 is a metal pipe, the pipe cavity of the limiting member 100 can be used as the wire hole 101 for passing the traction rope.

[0092] In the above embodiments, the two installation grooves 401 are located at two opposite sides of the auxiliary shaft 400, so that the two limiting materials 10 can be limited by the two installation grooves 401, thereby reducing the assembly difficulty of the two limiting materials 10 and the pipe body 200 and improving the assembly precision of the two limiting materials 10 and the pipe body 200.

[0093] According to some optional embodiments, referring to Figure 3 and Figure 4 One end of the auxiliary shaft 400 has a positioning protrusion 410. For example, at least part of the positioning protrusion 410 protrudes from the outer peripheral wall of the auxiliary shaft 400. Referring to Figure 5 In some optional embodiments, one end of the pipe body 200 has a positioning groove 202. For example, when the auxiliary shaft 400 is installed on the pipe body 200 and the positioning protrusion 410 is located in the positioning groove 202, the positioning protrusion 410 is limited by the positioning groove 202. One of the two installation grooves 401 has the limiting material 10 installed therein, which is limited by the inner wall of the first side of the pipe body 200, and the other of the two installation grooves 401 has the limiting material 10 installed therein, which is limited by the inner wall of the second side of the pipe body 200.

[0094] In the above embodiments, the positioning protrusion 410 can be used to position the auxiliary shaft 400 and the pipe body 200, so that the two limiting materials 10 can be installed on the first side and the second side of the pipe body 200, thereby reducing the preparation difficulty of the snake structure and improving the preparation precision of the snake structure.

[0095] It should be noted that, in the present document, the terms "comprising", "comprises" or any other variant thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises a" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the recited element. Also, it is to be noted that the scope of the methods and apparatus of this application are not limited by the order of the steps or the sequence for performing the steps, as some steps can occur in different order or concurrently, and some steps can be skipped or added, such as described in alternative examples. Also, features described in relation to certain examples can be combined in other examples.

[0096] The above description is only specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered by the protection scope of the present application.

Claims

1. A method for preparing a snake-bone structure, characterized in that, include: Prepare a tube body, the tube body comprising a plurality of sequentially connected bone segments, with an avoidance gap between two adjacent bone segments, and the two adjacent bone segments can be deflected relative to each other in a radial direction to a first side; A limiting material is provided, wherein the outer diameter of the limiting material is smaller than the inner diameter of the tube body; The limiting material is installed on the auxiliary shaft, the outer diameter of the auxiliary shaft is adapted to the inner diameter of the tube, the outer peripheral wall of the auxiliary shaft is in contact with the inner wall of the tube, and the auxiliary shaft has a mounting groove for installing the limiting material. The auxiliary shaft for mounting the limiting material is inserted into the tube body so that the outer peripheral wall of the limiting material abuts against the groove wall of the mounting groove and the inner side wall of the tube body, respectively. Adjust the relative position of the auxiliary shaft and the tube body until the limiting material abuts against the inner wall of the first side of the tube body; The limiting material is welded and fixed to each of the bone segments; The limiting material is cut to form a limiting member, at least one end of the limiting member protrudes from the end face of the bone segment forming the clearance notch, and in the case of the tube body bending, two adjacent bone segments can be stopped and limited by the limiting member on the same side.

2. The method for preparing the snake bone structure according to claim 1, characterized in that, The first end of the tube body in the extension direction has a positioning groove, and the auxiliary shaft is provided with a positioning protrusion that positions and cooperates with the positioning groove. When the positioning protrusion is embedded in the positioning groove, one of the mounting grooves of the auxiliary shaft is opposite to the inner wall of the first side of the tube body. Adjusting the relative position of the auxiliary shaft and the tube until the limiting blank abuts against the inner wall of the first side of the tube includes: Adjust the relative position of the auxiliary shaft and the tube body until at least a portion of the positioning protrusion is embedded in the positioning groove.

3. The method for preparing the snake bone structure according to claim 1, characterized in that, Two adjacent bone segments can be deflected relative to each other toward a second side that is radially opposite to the first side; Before cutting the limiting material to form the limiting member, the method for preparing the snake bone structure further includes: The limiting material is fixed to the inner wall of the second radial side of the bone segment, and each bone segment is fixedly connected to the limiting material.

4. The method for preparing the snake bone structure according to claim 1, characterized in that, The auxiliary shaft has two mounting slots, which are located on opposite sides of the auxiliary shaft. In one of the two mounting slots, the limiting material installed in the slot abuts against the inner wall of the first side of the tube body, while the limiting material installed in the other slot abuts against the inner wall of the second side of the tube body.

5. The method for preparing the snake bone structure according to any one of claims 1 to 4, characterized in that, The step of welding and fixing the limiting material to each of the bone segments includes: Weld the limiting blank to the bone segment located at the first end in the extension direction of the tube body; Weld the limiting blank to the bone segment located at the second end in the extension direction of the tube body; Weld the limiting material to the bone segment located between the first end and the second end in the extension direction of the tube body.

6. A jig for preparing a snake-bone structure, characterized in that, The fixture for preparing the snake-bone structure can be used in the method for preparing the snake-bone structure according to any one of claims 1 to 5; the snake-bone structure includes a tube and a limiting member; The jig for preparing the snake-bone structure includes an auxiliary shaft, the outer diameter of which is adapted to the inner diameter of the tube, the outer peripheral wall of which is fitted to the inner wall of the tube, and the auxiliary shaft having a mounting groove for mounting a limiting material, wherein the limiting material is used to prepare the limiting member. When the auxiliary shaft for installing the limiting material is inserted into the tube, the outer peripheral wall of the limiting material abuts against the groove wall of the mounting groove and the inner side wall of the tube.

7. The jig for preparing the snake-bone structure according to claim 6, characterized in that, The auxiliary shaft has two mounting slots, which are located on opposite sides of the auxiliary shaft.

8. The jig for preparing the snake-bone structure according to claim 7, characterized in that, One end of the auxiliary shaft has a positioning protrusion, and one end of the tube body has a positioning groove. When the auxiliary shaft is mounted on the tube body and the positioning protrusion is located in the positioning groove, the positioning protrusion and the positioning groove abut and limit the movement. In one of the two mounting slots, the limiting material installed in one slot abuts against the inner wall of the first side of the tube body, and the limiting material installed in the other slot abuts against the inner wall of the second side of the tube body.

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