A bendable assembly, insertion portion, and endoscope
By incorporating a proximal positioning groove in the flexible assembly near the distal end of the sleeve, the radial support force is enhanced, thus resolving the issue of traction rope wear and improving the reliability of the snake-bone assembly.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUNAN VATHIN MEDICAL INSTR CO LTD
- Filing Date
- 2025-06-16
- Publication Date
- 2026-06-19
AI Technical Summary
During the bending process of the snake bone assembly, the traction rope is easily worn by the distal end of the sleeve, which may even lead to the breakage of the traction rope.
In the flexible assembly, the first positioning groove at the proximal end is located at or near the distal end of the sleeve, enhancing the radial support force on the traction rope and preventing the traction rope from directly contacting the distal end face of the sleeve.
This effectively alleviates the problem of wear on the distal end face of the sleeve during the bending of the snake-bone assembly, thus improving the service life of the traction rope.
Smart Images
Figure CN224369829U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, and in particular to a flexible component, an insertion part, and an endoscope. Background Technology
[0002] An endoscope is a commonly used medical device that can directly enter human cavities for examination, providing doctors with comprehensive diagnostic information. An endoscope typically includes: an insertion part for insertion into the body, a handle for controlling the bending of the insertion part's tip, and a display device for showing the internal environment of the body's natural cavities. Through the coordination of these three parts, an endoscope can achieve visualization of the human body's interior, exploration of lesions, and treatment.
[0003] The insertion part includes a snake-bone assembly, the distal end of which is connected to a traction rope, and the proximal end of the traction rope is connected to an actuating element on the handle side. Controlling the actuating element controls the movement of the traction rope, thereby controlling the bending or straightening of the snake-bone assembly. In related technologies, a sleeve is also provided outside the traction rope. The sleeve is a spring tube or a metal tube, extending from the handle side to the proximal end of the snake-bone assembly, the distal end of the insertion tube, or the distal end of the adapter tube (used to connect the snake-bone assembly and the insertion tube), and is fixedly connected to the corresponding carrier. However, the inventors have found that during the bending process of the snake-bone assembly, the distal end of the sleeve is prone to causing wear on the traction rope, and may even lead to the breakage of the traction rope. Utility Model Content
[0004] This utility model discloses a flexible component, an insertion part, and an endoscope to solve the technical problem in the related art where the traction rope is easily worn by the distal end of the sleeve during the bending process of the snake bone component.
[0005] To solve the above problems, the present invention adopts the following technical solution:
[0006] The first aspect of this utility model discloses a flexible component.
[0007] The flexible component of this utility model is used in an endoscope. The flexible component includes multiple snake-shaped joints connected in sequence. The flexible component is also provided with positioning grooves for installing traction ropes. Adjacent positioning grooves are spaced apart. A sleeve is provided outside the traction rope. The distal end of the sleeve is fixedly connected to a carrier. The first positioning groove at the proximal end is located at the distal end of the sleeve fixing point and is adjacent to the carrier. Alternatively, the number of components between the first positioning groove at the proximal end and the carrier is less than or equal to a preset number, or the first positioning groove at the proximal end is located on the carrier.
[0008] The second aspect of this utility model discloses an insertion part.
[0009] The insertion part of this utility model includes the flexible component described in any one of the technical solutions of this utility model.
[0010] The third aspect of this utility model discloses an endoscope.
[0011] The endoscope of this utility model includes the insertion part described in any of the technical solutions of this utility model.
[0012] The technical solution adopted in this utility model can achieve the following beneficial effects:
[0013] In this flexible assembly, the first positioning groove at the proximal end is adjacent to the carrier for fixing the sleeve, or the number of components between the first positioning groove at the proximal end and the carrier is less than or equal to a preset number, or the first positioning groove at the proximal end is located on the carrier. That is, the first positioning groove at the proximal end of this invention is set towards the distal end of the sleeve. Compared with the prior art where the first positioning groove at the proximal end is spaced apart from the carrier by multiple snake joints, this invention can improve the radial support force on the traction rope at the distal end of the sleeve through the first positioning groove at the proximal end. This makes it less likely for the traction rope to abut against the distal end face of the sleeve when the snake assembly bends, thereby alleviating the problem of wear on the distal end face of the sleeve by the traction rope. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a schematic diagram of the endoscope used in an embodiment of this application;
[0016] Figure 2 This is a first schematic diagram of the insertion section according to an embodiment of this application;
[0017] Figure 3 yes Figure 2 A schematic diagram of part A in the middle;
[0018] Figure 4 yes Figure 2 A schematic diagram of Part B;
[0019] Figure 5 yes Figure 2 A schematic diagram of section C;
[0020] Figure 6 This is a second schematic diagram of the insertion section in an embodiment of this application;
[0021] Figure 7 yes Figure 6 A schematic diagram of section D;
[0022] Figure 8 This is a third schematic diagram of the insertion section in an embodiment of this application;
[0023] Figure 9 yes Figure 8 A schematic diagram of section E in the middle;
[0024] Figure 10 This is a schematic diagram of the insertion section according to another embodiment of this application;
[0025] Figure 11 yes Figure 10 A schematic diagram of section F in the middle;
[0026] Figure 12 This is a schematic diagram of the insertion part according to another embodiment of this application;
[0027] Figure 13 yes Figure 12 A schematic diagram of section G in the middle.
[0028] In the figure: 10, insertion part; 20, handle; 100, flexible component; 110, snake joint; 111, tail snake joint; 112, first groove; 113, second groove; 114, third groove; 115, opening; 120, positioning groove; 130, traction rope; 140, sleeve; 150, insertion tube; 160, adapter tube; 170, head end component. Detailed Implementation
[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0030] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.
[0031] In the various embodiments of this application, "near end" and "far end" refer to the distance of each component from the user in the usage environment. The end closer to the user is designated as the "near end", and the end farther from the user is designated as the "far end".
[0032] In related technologies, a sleeve, which can be a spring tube or a metal tube, is provided outside the traction rope. The traction rope is movable within the sleeve. The sleeve extends from the handle side to the proximal end of the snake bone assembly, the distal end of the insertion tube, or the distal end of the adapter tube (used to connect the snake bone assembly and the insertion tube), and is fixedly connected to the corresponding carrier. The carrier can be a proximal snake bone segment, the insertion tube, or the adapter tube.
[0033] Since the traction rope at the distal end of the connection between the sleeve and the carrier cannot continue to provide restraint through the sleeve, a downward pressure groove is provided on the snake-bone assembly. This groove guides the traction rope, both restraining its axial extension and providing support to prevent it from sinking into the internal space of the snake-bone assembly during bending. A greater number of downward pressure grooves improves the guidance of the traction rope, but too many grooves may reduce the strength of the snake-bone assembly. Therefore, a balance needs to be maintained between the number of downward pressure grooves and the strength of the snake-bone assembly. For this reason, multiple downward pressure grooves are spaced apart on the snake-bone assembly, with multiple snake-bone sections between adjacent grooves.
[0034] In related technologies, multiple serpentine joints are spaced between the carrier and the first pressure groove at the proximal end. This results in a lack of radial outward support for the traction rope in the region near the distal end of the casing, i.e., at the multiple serpentine joints where pressure grooves are not provided. Consequently, when the serpentine assembly bends, the traction rope easily comes into contact with the distal end face of the casing. During repeated bending of the serpentine assembly, the traction rope is easily worn by the distal end face of the casing, and may even break.
[0035] This application improves the radial support force of the first downward pressure groove at the near end to the far end of the casing by setting it closer to the far end of the casing. This makes it less likely for the traction rope to come into contact with the far end face of the casing when the snake bone assembly bends, thereby alleviating the problem of wear on the far end face of the casing by the traction rope.
[0036] The following is in conjunction with the appendix Figures 1 to 13 The flexible component, insertion part, and endoscope provided in this application will be described in detail through specific embodiments and application scenarios.
[0037] The first aspect of this embodiment describes the flexible component in detail.
[0038] The flexible component of this embodiment is used in an endoscope, specifically for the insertion portion of the endoscope, to achieve a bending function of the insertion portion. In some embodiments, the flexible component includes a plurality of sequentially connected serpentine segments 110, such as... Figure 2 As shown, a plurality of sequentially connected snake bone segments 110 constitute a snake bone assembly. Exemplarily, the plurality of sequentially connected snake bone segments 110 are integrally cut snake bones, with slits between adjacent snake bone segments 110, thereby making the snake bone assembly flexible.
[0039] In some embodiments, the flexible component is further provided with a positioning groove 120, such as Figure 3 or Figure 5 As shown. The positioning groove 120 is used to install the traction rope 130 and provides guidance and support for the traction rope 130. For example, the positioning groove 120 is a recess formed by pressing down the wall of the flexible component. Specifically, the traction rope 130 passes through the interior of the flexible component and enters the positioning groove 120, and then enters the interior of the flexible component again, so that the positioning groove 120 provides radial support for the traction rope 130, as shown. Figure 3 or Figure 5 As shown. However, this is not the only possibility; the positioning groove 120 can also be any other structure.
[0040] Preferably, two adjacent positioning slots are spaced 120 apart, such as Figure 2 As shown. For example, multiple snake-bone joints 110 are spaced apart between two adjacent positioning slots 120, such as... Figure 2 As shown. For example, there are 4 to 8 snake-bone joints 110 between two adjacent positioning slots 120. In this embodiment, two adjacent positioning slots 120 refer to two positioning slots 120 that are adjacent in the axial direction. For example, there are 5 snake-bone joints 110 between the first positioning slot 120 and the second positioning slot 120 located at the proximal end.
[0041] In some embodiments, a sleeve 140 is provided outside the traction rope 130, such as... Figure 2 As shown. The sleeve 140 is a steel pipe, metal pipe, or spring tube. The traction rope 130 is movable within the sleeve 140. The distal end of the sleeve 140 is fixedly connected to the carrier. The fixing point between the sleeve 140 and the carrier is the sleeve fixing point. Exemplarily, the distal end of the sleeve 140 is welded to the carrier. Specifically, when the tube body of the flexible assembly only includes the snake-bone assembly, the carrier is, for example, the tail section snake-bone segment 111, such as... Figure 2 and Figure 3 As shown; when the tube body of the flexible assembly includes a snake-like assembly and an insertion tube 150, the carrier is, for example, the tail section snake-like section 111 or the insertion tube 150, as shown. Figure 10 and Figure 11 As shown; when the flexible assembly's tube body includes a snake-like assembly, an insertion tube 150, and an adapter tube 160, the carrier is, for example, the tail section snake-like section 111, the insertion tube 150, or the adapter tube 160, such as Figure 12 and Figure 13 As shown.
[0042] In some embodiments, the first positioning groove 120 located proximally is located distal to the sleeve fixing point. Preferably, the first positioning groove 120 located proximally is disposed adjacent to the carrier, that is, there is no snake joint 110 or adapter pipe 160 separating the first positioning groove 120 from the carrier, such as... Figure 3 As shown; or the number of components spaced between the first positioning groove 120 at the proximal end and the carrier is less than or equal to a preset number; or the first positioning groove 120 at the proximal end is located on the carrier. For example, the spaced components can be a connector 160 or a snake joint 110. For example, the preset number is one. Not limited to this, the preset number can also be two or three, depending on the width of the connector 160 and / or the snake joint 110. This is as long as the first positioning groove 120 is closer to the distal end face of the sleeve 140 compared to existing structures.
[0043] In this embodiment of the bendable component, the first positioning groove 120 is located at the distal end near the sleeve 140. Compared with the prior art where the first positioning groove 120 at the proximal end is spaced apart from the carrier by multiple snake-bone joints 110, this embodiment can improve the radial support force on the traction rope 130 at the distal end of the sleeve 140 through the first positioning groove 120 at the proximal end. This makes it less likely for the traction rope 130 to come into contact with the distal end face of the sleeve 140 when the snake-bone component bends, thereby alleviating the problem of the traction rope 130 being worn by the distal end face of the sleeve 140.
[0044] When the first positioning groove 120 located at the proximal end is spaced apart from the carrier, the number of components spaced between the first positioning groove 120 located at the proximal end and the carrier is described as one.
[0045] In some embodiments, the carrier is a tail section 111, and the positioning groove 120 is provided on the tail section 110. When the tubular portion of the flexible assembly only includes the snake-bone assembly, the carrier can be a tail section 111, in which case the positioning groove 120 is provided on the tail section 110, such as... Figure 2 As shown. The telson serpentine segment 111 refers to the first serpentine segment 110 located proximally, as... Figure 2 and Figure 3 As shown. Specifically, the first positioning groove 120 located at the proximal end can be located on the telson 111; or on the telson 110 adjacent to the telson 111, that is, on the second proximal telson 110, as shown. Figure 3 As shown; or located on the serpentine segment 110, which is one serpentine segment 110 away from the telson segment 111, that is, on the third serpentine segment 110 at the proximal end.
[0046] In some embodiments, the flexible assembly further includes an insertion tube 150 located proximal to the telson 111, such as... Figure 10 and Figure 11As shown. The insertion tube 150 is fixedly connected to the proximal end of the tail section 111. When the tube body of the flexible assembly includes the snake-bone assembly and the insertion tube 150, the carrier can be either the tail section 111 or the insertion tube 150. Specifically, when the carrier is the tail section 111, the positioning grooves 120 are all provided on the snake section 110. In this case, the first positioning groove 120 located at the proximal end can be located on the tail section 111, the second proximal snake section 110, or the third proximal snake section 110. When the carrier is the insertion tube 150, the positioning grooves 120 can all be provided on the snake section 110. In this case, the first positioning groove 120 located at the proximal end can be located on the tail section 111 or the second proximal snake section 110. Figure 11 A schematic diagram is shown where the carrier is an insertion tube 150, and the first positioning groove 120 at the proximal end is located on the second serpentine segment 110 at the proximal end. When the carrier is an insertion tube 150, the positioning groove 120 may also be partially located on the serpentine segment 110 and partially located on the insertion tube 150, in which case the first positioning groove 120 at the proximal end is located on the insertion tube 150.
[0047] In some embodiments, the flexible assembly further includes an insertion tube 150 and an adapter tube 160, the insertion tube 150 being located proximal to the telson 111, and the adapter tube 160 being used to connect the insertion tube 150 and the telson 111, such as... Figure 12 and Figure 13 As shown. Exemplarily, the hardness of the insertion tube 150, the adapter tube 160, and the snake-bone assembly decreases sequentially. The two ends of the adapter tube 160 are fixedly connected to the insertion tube 150 and the tail section snake-bone joint 111, respectively. When the tube body of the flexible assembly includes the snake-bone assembly, the insertion tube 150, and the adapter tube 160, the carrier can be one of the tail section snake-bone joint 111, the insertion tube 150, and the adapter tube 160.
[0048] Specifically, when the carrier is the tail section 111, the positioning grooves 120 are all provided on the serpentine section 110. At this time, the first positioning groove 120 located at the proximal end can be located on the tail section 111, the second serpentine section 110 at the proximal end, or the third serpentine section 110 at the proximal end.
[0049] Specifically, when the carrier is the insertion tube 150, the positioning groove 120 can be entirely located on the serpentine segment 110, and the first positioning groove 120 located at the proximal end can be located on the tail segment serpentine segment 111. When the carrier is the insertion tube 150, the positioning groove 120 can also be partially located on the serpentine segment 110 and partially located on the insertion tube 150, and the first positioning groove 120 located at the proximal end can be located on the insertion tube 150. When the carrier is the insertion tube 150, the positioning groove 120 can also be partially located on the serpentine segment 110 and partially located on the adapter tube 160, and the first positioning groove 120 located at the proximal end can be located on the adapter tube 160.
[0050] Specifically, when the carrier is the adapter tube 160, the positioning grooves 120 can all be located on the serpentine segment 110. In this case, the first positioning groove 120 located at the proximal end can be located on the tail segment serpentine segment 111 or the second proximal segment serpentine segment 110, such as... Figure 13 As shown. When the carrier is the adapter tube 160, the positioning groove 120 can also be partially provided on the snake joint 110 and partially provided on the adapter tube 160. In this case, the first positioning groove 120 located at the proximal end can be located on the adapter tube 160, the tail section snake joint 111, or the second snake joint 110 at the proximal end.
[0051] In some embodiments, positioning grooves 120 are provided on both radially opposite sides of the flexible component, such as... Figure 2 and Figure 6 As shown. The positioning groove 120 is provided corresponding to the traction rope 130. When the insertion part has two traction ropes 130, two positioning grooves 120 are provided in the circumferential direction of the flexible component so that when the snake bone component bends to either side, the radial support force on the traction rope 130 at the distal end of the sleeve 140 can be increased through the first positioning groove 120 located at the proximal end, thereby alleviating the problem of wear on the distal end face of the sleeve 140 of the traction rope 130.
[0052] In some embodiments, the positioning groove 120 located on the serpentine segment 110 is a pressing groove formed by a wall recess of a single serpentine segment 110, such as... Figure 3 and Figure 5 As shown. Alternatively, the positioning groove 120 located on the serpentine segment 110 is a pressing groove formed by the wall recesses on the adjacent sides of two adjacent serpentine segments 110, that is, each of the two adjacent serpentine segments 110 has a portion of the positioning groove 120, such as... Figure 7 As shown. This structure, due to the gap between the two snake-bone segments 110 and the smaller width of the downward pressing wall of a single snake-bone segment 110, helps to reduce the machining difficulty of the positioning groove 120.
[0053] It is known that the positioning groove 120 located on the insertion tube 150 or the adapter tube 160 can be formed by a partial wall recess of the insertion tube 150 or the adapter tube 160.
[0054] In some embodiments, a first groove 112 is provided between two adjacent serpentine segments 110, and a second groove 113 is provided between the positioning groove 120 and the adjacent serpentine segment 110, such as... Figure 2 , Figure 4 and Figure 5 As shown. Exemplarily, the first groove 112 and the second groove 113 penetrate the wall surface of the flexible assembly. Preferably, the width of the second groove 113 is greater than the width of the first groove 112, such as... Figure 4 and Figure 5As shown. This allows the width of the snake joint 110 where the positioning groove 120 is set to be smaller, which reduces the wall strength of this part of the snake joint 110, making it easier to deform, and further reducing the processing difficulty of the positioning groove 120.
[0055] In some embodiments, along the circumferential direction of the serpentine joint 110, from the center of the first groove 112 to both sides, the width of the first groove 112 gradually decreases, such as... Figure 4 As shown. For example, the center of the first groove 112 is the position corresponding to the traction rope 130. In the flexible component of this embodiment, the width of the first groove 112 gradually decreases from the center to both sides, which not only facilitates the snake bone component to achieve large-angle bending, but also ensures that the snake bone component has a certain rigidity and is not easily deformed when inserted into the cavity.
[0056] In some embodiments, along the circumferential direction of the serpentine joint 110, a third groove 114 is provided on both sides of the second groove 113, the width of the third groove 114 being smaller than the width of the second groove 113, such as... Figure 5 As shown. For example, the sum of the circumferential lengths of the second groove 113 and the third grooves 114 on both sides is the same as the circumferential length of the first groove 112. This not only helps the snake bone assembly to achieve the angle function, but also allows the snake bone assembly to have a large gap only at the positioning groove 120, ensuring that the snake bone assembly has a certain rigidity and is not easily deformed when inserted into the cavity.
[0057] Preferably, the width of the third groove 114 gradually decreases from the side closer to the second groove 113 to the side farther away from the second groove 113. This not only helps the snake bone assembly to achieve the bending function, but also ensures that the snake bone assembly has a certain rigidity and is not easily deformed when inserted into the cavity.
[0058] In some embodiments, openings 115 are provided on both sides of the first groove 112 and the second groove 113, and both the first groove 112 and the second groove 113 communicate with the openings 115, such as... Figure 8 and Figure 9 As shown. Figure 9 As shown, when the second groove 113 has a third groove 114 on both sides, the second groove 113 communicates with the opening 115 through the third groove 114. For example, the opening 115 penetrates the wall surface of the flexible component. In this embodiment of the flexible component, the opening 115 on both sides of the first groove 112 and the second groove 113 avoids the risk of the first groove 112 and the second groove 113 being torn when the snake-bone component is bent.
[0059] In some embodiments, the pitch of the distal serpentine segment 110 is smaller than the pitch of the proximal serpentine segment 110, such as... Figure 2 and Figure 6As shown. Exemplarily, the pitch of the serpentine segments 110 gradually decreases from the proximal end to the distal end; or the distal serpentine segments 110 have a first pitch, and the proximal serpentine segments 110 have a second pitch, the first pitch being smaller than the second pitch. In this embodiment, the pitch refers to the width of each serpentine segment 110 along the axial direction of the serpentine assembly. In this embodiment of the flexible assembly, the pitch of the distal serpentine segments 110 is smaller than the pitch of the proximal serpentine segments 110, but the bending radius of the serpentine assembly near the distal end is smaller, improving the flexibility of the flexible assembly and reducing the risk of damage to the inner wall of the cavity.
[0060] The second aspect of this embodiment will be described in detail regarding the insertion part.
[0061] The insertion part of this embodiment includes the flexible component 100 of any of the technical solutions in this embodiment. Not limited thereto, the insertion part may also include a head end component 170 located at the distal end of the flexible component, an instrument tube, a wire harness, or other structures located inside the flexible component, such as... Figure 2 As shown. The remaining structure of the insertion part is the same as that of the prior art, and will not be described in detail here.
[0062] The insertion part of this embodiment includes the flexible component 100 of any of the technical solutions in this embodiment. When the flexible component is bent, it can alleviate the problem of wear on the distal end face of the traction rope 130 by the sleeve 140.
[0063] The third aspect of this embodiment provides a detailed description of the endoscope.
[0064] The endoscope of this embodiment includes the insertion part 10 of any of the technical solutions in this embodiment, such as... Figure 1 As shown. Exemplarily, the endoscope also includes a handle 20 connected to the proximal end of the insertion portion 10, as... Figure 1 As shown. The remaining structure of the endoscope is the same as that of existing technology and will not be described in detail here.
[0065] The endoscope in this embodiment may be a digestive endoscope, bronchoscope, nephroscope, esophagoscope, gastroscope, colonoscope, otoscope, rhinoscope, oral endoscope, laryngoscope, colposcope, laparoscope, arthroscope, etc. This embodiment does not impose specific restrictions on the type of endoscope.
[0066] The endoscope of this embodiment includes the insertion part of any of the technical solutions in this embodiment. When the flexible component is bent, it can alleviate the problem of wear on the distal end face of the traction rope 130 by the sleeve 140.
[0067] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.
[0068] Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.
[0069] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.
Claims
1. A flexible assembly for use in an endoscope, characterized in that, The flexible component includes multiple snake-bone joints (110) connected in sequence. The flexible component is also provided with positioning grooves (120) for installing traction ropes (130). Adjacent positioning grooves (120) are spaced apart. A sleeve (140) is provided outside the traction rope (130). The distal end of the sleeve (140) is fixedly connected to the carrier. The first positioning groove (120) located at the proximal end is located at the distal end of the sleeve fixing point. Furthermore, the first positioning groove (120) located at the proximal end is disposed adjacent to the carrier, or the number of components spaced between the first positioning groove (120) located at the proximal end and the carrier is less than or equal to a preset number, or the first positioning groove (120) located at the proximal end is located on the carrier.
2. The flexible component according to claim 1, characterized in that, The carrier is a tail section (111), and the positioning groove (120) is provided on the tail section (110).
3. The flexible component according to claim 1, characterized in that, It also includes an insertion tube (150) located near the proximal end of the telson serpentine segment (111), and The carrier is a tail section (111), and the positioning groove (120) is provided on the tail section (110); Alternatively, the carrier is an insertion tube (150), the positioning groove (120) is provided on the snake joint (110), or the positioning groove (120) is provided on the snake joint (110) and the insertion tube (150).
4. The flexible component according to claim 1, characterized in that, It also includes an insertion tube (150) and an adapter tube (160), the insertion tube (150) being located near the proximal end of the telson segment (111), and the adapter tube (160) being used to connect the insertion tube (150) and the telson segment (111). The carrier is a tail section (111), and the positioning groove (120) is provided on the tail section (110); Alternatively, the carrier is an insertion tube (150), the positioning groove (120) is provided on the snake joint (110), or the positioning groove (120) is provided on the snake joint (110) and the insertion tube (150), or the positioning groove (120) is provided on the snake joint (110) and the adapter tube (160); Alternatively, the carrier is a connector (160), the positioning groove (120) is provided on the snake joint (110), or the positioning groove (120) is provided on the snake joint (110) and the connector (160).
5. The flexible component according to any one of claims 1 to 4, characterized in that, The flexible component has positioning grooves (120) on both radially opposite sides. And / or, the positioning groove (120) located on the snake joint (110) is a pressing groove formed by the wall recess of a single snake joint (110), or a pressing groove formed by the wall recesses on the adjacent sides of two adjacent snake joints (110). And / or, multiple snake bone segments (110) connected in sequence form a single cut snake bone.
6. The flexible component according to claim 5, characterized in that, A first groove (112) is provided between two adjacent snake segments (110), and a second groove (113) is provided between the positioning groove (120) and the adjacent snake segment (110), and the width of the second groove (113) is greater than the width of the first groove (112).
7. The flexible component according to claim 6, characterized in that, Along the circumferential direction of the snake joint (110), from the center of the first groove (112) to both sides, the width of the first groove (112) gradually decreases; And / or, along the circumferential direction of the serpentine segment (110), a third groove (114) is provided on both sides of the second groove (113), the width of the third groove (114) is smaller than the width of the second groove (113), and the width of the third groove (114) gradually decreases from the side closer to the second groove (113) to the side farther away from the second groove (113); And / or, openings (115) are provided on both sides of the first cutting groove (112) and the second cutting groove (113), and the first cutting groove (112) and the second cutting groove (113) are connected to the openings (115).
8. The flexible component according to claim 1, characterized in that, The pitch of the distal serpentine segment (110) is smaller than that of the proximal serpentine segment (110).
9. An insertion part, characterized in that, Includes the flexible component according to any one of claims 1 to 8.
10. An endoscope, characterized in that, Includes the insertion portion as described in claim 9.