A head-end assembly, insertion portion, and endoscope

Abstract

The utility model discloses a head end subassembly, inserts portion and endoscope relates to medical instrument technical field. The utility model discloses a head end subassembly, applies to endoscope, and head end subassembly includes head end seat, and the head end seat is installed at the first segment snake bone of snake bone subassembly, and the head end seat has first width and second width, and first width is less than second width, and first width is the width of head end seat along first radial direction, and second width is the width of head end seat along second radial direction, and first radial direction is the direction of head end seat and first segment snake bone connection, and second radial direction is perpendicular with first radial direction. The utility model discloses a head end subassembly, can increase the internal space of head end seat under the condition of guaranteeing the existing size of head end subassembly, or can reduce the size of head end subassembly under the condition of guaranteeing the existing internal space of head end seat, realizes the miniaturization of head end subassembly, thereby is favorable to keeping the balance between the internal space of head end seat and the size of head end subassembly.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a head end assembly, 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] In related technologies, the insertion unit has a head assembly at its distal end, which is fixed to the distal proximal serpentine segment. The head assembly typically includes a head base, a camera module mounted on the head base, and an instrument tube. In related technologies, when the head assembly is relatively small, the internal space of the head base is also usually small; to ensure sufficient internal space, the head assembly typically needs to be made larger. Therefore, existing insertion units struggle to maintain a balance between the internal space of the head base and the size of the head assembly. Utility Model Content

[0004] This utility model discloses a head end assembly, an insertion part, and an endoscope to solve the technical problem in the related art that it is difficult to maintain the balance between the internal space of the head end seat and the size of the head end assembly in the insertion part.

[0005] To solve the above problems, the present invention adopts the following technical solution:

[0006] The first aspect of this utility model discloses a head end assembly.

[0007] The present invention relates to a headpiece assembly used in an endoscope. The headpiece assembly includes a headpiece base, which is mounted on the first segment of the snake bone assembly. The headpiece base has a first width and a second width, wherein the first width is smaller than the second width. The first width is the width of the headpiece base along a first radial direction, and the second width is the width of the headpiece base along a second radial direction. The first radial direction is the direction in which the headpiece base connects to the first segment of the snake bone, and the second radial direction is perpendicular to the first radial direction.

[0008] The second aspect of this utility model discloses an insertion part.

[0009] The insertion part of this utility model includes a head end assembly and a snake bone assembly. The head end assembly is the head end assembly described in any of the technical solutions of this utility model. The first segment of the snake bone assembly is connected to the head end assembly, and at least two winglets are provided at the distal end of the first segment of the snake bone. Two adjacent winglets are spaced apart. When the head end assembly is installed at the first segment of the snake bone, the winglets are in contact with the two sides of the head end seat.

[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] The head end assembly of this utility model includes a head end seat, which has a first width and a second width. The first width is smaller than the second width, that is, the head end seat is a long strip structure. The two sides of the head end seat with smaller width are connected to the first segment of the snake bone. Specifically, the two winglets of the first segment of the snake bone are attached to the two sides of the head end seat. When the head end seat rotates circumferentially, interference occurs between the winglets and the head end seat, thereby limiting the head end seat circumferentially and preventing the head end seat from rotating circumferentially.

[0014] As can be seen, the head end assembly of this utility model, by setting the head end seat to a non-circular structure, eliminates the need for an additional circumferential positioning structure on the head end seat. Compared with the head end seat in the prior art, this utility model can reduce the wall thickness of the head end seat, thereby increasing the internal space of the head end seat while ensuring the existing size of the head end assembly; or reducing the size of the head end assembly while ensuring the existing internal space of the head end seat, thus achieving miniaturization of the head end assembly.

[0015] The head end assembly of this utility model solves the technical problem in related technologies that it is difficult to maintain the balance between the internal space of the head end seat and the size of the head end assembly in the insertion part. Attached Figure Description

[0016] 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.

[0017] Figure 1 This is a schematic diagram of the endoscope in an embodiment of this application;

[0018] Figure 2This is a schematic diagram of the head end component and the snake bone component in an embodiment of this application;

[0019] Figure 3 This is a first partial schematic diagram of the head end component and the snake bone component in an embodiment of this application;

[0020] Figure 4 This is a second partial schematic diagram of the head end component and the snake bone component in an embodiment of this application;

[0021] Figure 5 This is a third partial schematic diagram of the head end component and the snake bone component in an embodiment of this application;

[0022] Figure 6 This is a first schematic diagram of the head-end component according to an embodiment of this application;

[0023] Figure 7 This is a second schematic diagram of the head-end component according to an embodiment of this application;

[0024] Figure 8 This is a schematic diagram of the connection between the wiring harness and the camera module in an embodiment of this application;

[0025] Figure 9 This is a first schematic diagram of the first section of the snake bone in an embodiment of this application;

[0026] Figure 10 This is a second schematic diagram of the first section of the snake bone in an embodiment of this application.

[0027] In the diagram: 10, Insertion part; 20, Handle; 100, Head end assembly; 110, Head end seat; 120, Camera module; 121, Camera; 122, Light source; 130, Through hole; 140, Instrument tube; 200, Snake bone assembly; 210, First segment of snake bone; 211, Wing; 212, Stop part; 213, Notch; 220, Wiring harness; 230, Glue layer; 240, Protective layer. Detailed Implementation

[0028] 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.

[0029] 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.

[0030] 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".

[0031] In related technologies, the head end assembly typically has a positioning structure on the head end seat. When the head end seat is connected to the distal first segment of the serpentine bone, the positioning structure can cooperate with the first segment of the serpentine bone to achieve circumferential positioning of the head end seat, thereby preventing circumferential rotation of the head end seat.

[0032] In related technologies, the positioning structure typically involves forming a stepped structure on the headstock. When the headstock connects to the distal first segment of the serpentine bone, the distal first segment overlaps the step, serving a positioning function. This positioning structure results in a relatively thick wall of the headstock at the positioning point. While maintaining the existing dimensions of the headstock assembly, the increased wall thickness encroaches on the internal space of the headstock; conversely, while maintaining the internal space of the headstock, the increased wall thickness leads to a larger headstock assembly size. Therefore, in related technologies, it is difficult to maintain a balance between the internal space of the headstock and the dimensions of the headstock assembly.

[0033] Therefore, this application modifies the structure of the head end seat by setting it as a non-circular structure, preferably a long strip structure. This allows for circumferential positioning through the cooperation between the head end seat and the first segment of the snake bone, eliminating the need for an additional circumferential positioning structure on the head end seat. In other words, the wall thickness of the head end seat can be reduced, thereby increasing the internal space of the head end seat while maintaining the existing size of the head end assembly; or reducing the size of the head end assembly while maintaining the existing internal space of the head end seat, thus achieving miniaturization of the head end assembly.

[0034] The following is in conjunction with the appendix Figures 1 to 10 The present application provides a detailed description of the head assembly, insertion part, and endoscope through specific embodiments and application scenarios.

[0035] The first aspect of this embodiment describes the head-end assembly in detail.

[0036] The tip assembly of this embodiment is used in an endoscope, particularly at the distal end of the endoscope insertion section 10. The tip assembly of this embodiment includes a tip seat 110, which is mounted on the first segment 210 of the snake bone assembly 200, such as... Figure 2 As shown. It can be seen that the first segment of the snake bone 210 refers to the first segment of the snake bone at the distal end of the snake bone assembly 200. For example... Figure 6 As shown, the headpiece 110 is formed as a mounting base. The headpiece 110 is used to mount structures such as the camera module 120 and the instrument tube 140, so that after the insertion part 10 is inserted into the cavity, operations such as taking pictures through the camera module 120 and inserting instruments through the instrument tube 140 can be performed. For example, the headpiece 110 can be injection molded.

[0037] In some embodiments, the headstock 110 has a first width and a second width, the first width being smaller than the second width. The first width is the width of the headstock 110 along a first radial direction, the second width is the width of the headstock 110 along a second radial direction, and the first radial direction is the direction in which the headstock 110 connects to the first serpentine skeletal segment 210, and the second radial direction is perpendicular to the first radial direction. Figure 7 As shown, the two flaps 211 of the first segment of the snake bone 210 are attached to the left and right sides of the head end seat 110. Correspondingly, the first radial direction is along the x-axis; the second radial direction is perpendicular to the first radial direction, that is, the second radial direction is along the y-axis. For example, the first width is 1 / 3 to 2 / 3 of the second width.

[0038] For example, the cross-section of the head end seat 110 is one of elliptical, quasi-elliptical, rectangular, or quasi-rectangular. Quasi-elliptical means the overall cross-section of the head end seat 110 is elliptical, but its sides may not be entirely curved; for example, a portion of the side may be planar. Similarly, quasi-rectangular means the overall cross-section of the head end seat 110 is rectangular, but its sides may not be entirely planar, but partially curved. Whether it is quasi-elliptical or quasi-rectangular can be determined based on the overall cross-section of the head end seat 110. For example, Figure 7 The cross-section of the head end seat 110 shown is elliptical.

[0039] For example, if the cross-section of the head end 110 is elliptical, the first radial direction refers to the direction along the minor axis of the ellipse, and the first width refers to the length of the minor axis of the ellipse; the second radial direction refers to the direction along the major axis of the ellipse, and the second width refers to the length of the major axis of the ellipse.

[0040] For example, if the cross-section of the head end 110 is rectangular, the first radial direction refers to the direction along the width of the rectangle, and the first width refers to the length of the short side of the rectangle; the second radial direction refers to the direction along the length of the rectangle, and the second width refers to the length of the long side of the rectangle.

[0041] The head-end assembly in this embodiment includes a head-end base 110, which has a first width and a second width. The first width is smaller than the second width, meaning the head-end base 110 is an elongated structure. The two sides of the head-end base 110 with the smaller width are connected to the first segment of the snake bone 210. Specifically, the two flaps 211 of the first segment of the snake bone 210 are fitted to the two sides of the head-end base 110. Figures 3-5 As shown. When the headstock 110 rotates circumferentially, interference occurs between the winglet 211 and the headstock 110, thereby limiting the headstock 110 circumferentially and preventing it from rotating circumferentially.

[0042] As can be seen, in this embodiment, the head-end assembly, by setting the head-end base 110 as an elongated structure, eliminates the need for an additional circumferential positioning structure on the head-end base 110. Compared to the head-end base 110 in the prior art, this embodiment can reduce the wall thickness of the head-end base 110, thereby increasing the internal space of the head-end base 110 while maintaining the existing size of the head-end assembly; or, while maintaining the existing internal space of the head-end base 110, the size of the head-end assembly can be reduced, achieving miniaturization of the head-end assembly size, which is beneficial for maintaining the balance between the internal space of the head-end base 110 and the size of the head-end assembly.

[0043] In some embodiments, the head-end assembly further includes a camera module 120, which is disposed on the head-end base 110, such as... Figures 3-6 As shown. For example, the camera module 120 and the head mount 110 can be formed as a single unit through injection molding. As... Figure 7 As shown, the camera module 120 includes a camera 121 and light sources 122 distributed on the side of the camera 121. When the insertion part 10 is inserted into the cavity, the light source 122 can provide sufficient brightness so that the camera 121 can capture the condition inside the cavity.

[0044] In some embodiments, the camera module 120 partially overlaps with the first segment of the snake bone 210 in the axial direction of the headstock 110, such as... Figure 5 As shown. Figure 5 As shown, the proximal end of the camera module 120 extends into the first segment of the snake bone 210. Specifically, the proximal end of the camera module 120 extends into the wing 211 of the first segment of the snake bone 210, thereby causing the camera module 120 to partially overlap with the first segment of the snake bone 210.

[0045] In related technologies, the camera module 120 is typically located at the distal end of the first serpentine segment 210. In this embodiment, the camera module 120 partially overlaps with the first serpentine segment 210 in the axial direction of the head end assembly 110. This not only enhances the integration between the head end assembly and the first serpentine segment 210, improving the reliability of their connection, but also, since the head end assembly cannot be bent, aligning the camera module 120 with the first serpentine segment 210 helps reduce the bending radius of the insertion portion 10 during bending, thus mitigating damage to the inner wall of the cavity caused by the distal end of the insertion portion 10.

[0046] In some embodiments, the length of the overlapping portion of the camera module 120 and the first segment of the snake bone 210 satisfies: L0 = 1 / 10L to 1 / 2L. Wherein, L0 is the length of the overlapping portion of the camera module 120 and the first segment of the snake bone 210, and L is the axial length of the camera module 120. L0 and L are as follows... Figure 5 As shown. Preferably, L0 = 1 / 3L to 1 / 2L.

[0047] In this embodiment, by limiting the length of the overlapping portion between the camera module 120 and the first segment of the snake bone 210, the head end assembly can avoid the problem that the overlapping portion of the camera module 120 and the first segment of the snake bone 210 is too short, which would not effectively reduce the bending radius of the insertion part 10. On the other hand, the size of the proximal end of the head end seat 110 is smaller than the size of the distal end. If the length of the overlapping portion between the camera module 120 and the first segment of the snake bone 210 is too long, it may also lead to the inner diameter of the snake bone assembly 200 being too large, which is not conducive to the miniaturization of the insertion part 10.

[0048] In some embodiments, the headstock 110 is also provided with a through hole 130 for installing the instrument tube 140, such as... Figure 6 As shown. For example, the instrument tube 140 and the headstock 110 can be formed as a single unit through injection molding. For example, the distal end face of the instrument tube 140 can be flush with the distal end face of the through hole 130; or the distal end face of the instrument tube 140 can be located proximal to the distal end face of the through hole 130. As... Figure 6 As shown, the distal end face of the through hole 130 is formed into a bevel structure. When the instrument extends from the distal end face of the through hole 130, it is beneficial for the instrument to achieve a greater range of rotation.

[0049] In some embodiments, the through-hole 130 and the camera module 120 are distributed along the second radial direction of the head end seat 110, such as... Figure 7 As shown. For example, for a head end 110 with an elliptical or near-elliptical structure, the through hole 130 and the camera module 120 are distributed along the major axis of the head end 110.

[0050] In this embodiment, the head-end assembly has the through hole 130 and the camera module 120 distributed along the second radial direction of the head-end base 110. This makes full use of the internal space of the head-end base 110 and helps to further reduce the size of the head-end assembly while ensuring the head-end camera function and insertion function.

[0051] The second aspect of this embodiment will be described in detail regarding the insertion part.

[0052] The insertion part of this embodiment includes a head end assembly 100 and a snake bone assembly 200, such as Figure 2 As shown. The head-end assembly 100 is the head-end assembly of any technical solution in this embodiment, and the first segment 210 of the snake bone assembly 200 is connected to the head-end assembly 100. For example, the distal end of the first segment 210 is provided with at least two winglets 211, with adjacent winglets 211 spaced apart, such as... Figure 9 and Figure 10 As shown. When the head assembly 100 is installed at the first segment of the snake bone 210, the wing 211 is fitted and connected to both sides of the head base 110, as shown. Figures 3-5 As shown.

[0053] For example, the inner surface of the wing 211 matches the outer surfaces of the two sides of the headstock 110. For example, the inner surface of the wing 211 may be formed as a planar structure or a curved structure.

[0054] The insertion part 10 of this embodiment has a head end component of any of the technical solutions in this embodiment, which is beneficial to maintaining the balance between the internal space of the head end seat 110 and the size of the head end component.

[0055] like Figure 9 and Figure 10 As shown, the distal end of the first segment 210 is provided with two fins 211, with adjacent fins 211 spaced apart. When the head assembly 100 is installed at the first segment 210, the gap between adjacent fins 211 provides clearance for the head seat 110, specifically providing clearance for both sides of the head seat 110 in the second radial direction, thus eliminating the need to increase the size of the snake assembly 200. Figures 3-5 As shown. In addition, two adjacent winglets 211 are spaced apart. When the head end seat 110 is installed at the first segment of the snake bone 210, the winglet 211 can deform, which facilitates the installation of the head end seat 110 at the first segment of the snake bone 210.

[0056] In some embodiments, the first segment of the snake bone 210 is also provided with a stop portion 212, such as... Figure 9 and Figure 10 As shown. When the head end assembly 100 is installed at the first segment of the snake bone 210, the stop portion 212 is used to axially limit the head end seat 110. For example, as Figure 9 and Figure 10As shown, the stop portion 212 is located on the side of the wing 211 and is formed by the distal end face of the first segment of the snake bone 210.

[0057] In this embodiment, the distal end of the insertion part 10 head end seat 110 is larger than the proximal end. When the head end assembly 100 is installed at the first section of the snake bone 210, the stop part 212 stops the head end seat 110 axially by stopping the outer surface of the head end seat 110. This can prevent the head end seat 110 from being inserted too much into the first section of the snake bone 210, which would cause the first section of the snake bone 210 to deform and affect the bending accuracy of the insertion part 10.

[0058] like Figure 8 As shown, the camera module 120 is also connected to the wiring harness 220, thereby enabling image transmission.

[0059] In some embodiments, a notch 213 is also provided on the first segment of the snake bone 210, such as... Figure 3 , Figure 4 and Figure 9 As shown. Notch 213 is located on the wire harness 220 mounting side of the first segment of the snake bone 210, and / or notch 213 is located on the instrument tube 140 mounting side of the first segment of the snake bone 210. Figure 3 and Figure 4 As shown, a notch 213 is provided on the mounting side of the wire harness 220 on the first segment of the snake bone 210, which can be used to avoid the wire harness 220. Not limited to this, a notch 213 can also be provided on the mounting side of the instrument tube 140 on the first segment of the snake bone 210, which can also be used to avoid the instrument tube 140.

[0060] In some embodiments, the insertion portion 10 further includes an adhesive layer 230, such as... Figure 3 As shown. An adhesive layer 230 is disposed between the headstock 110 and the first segment 210, and the adhesive layer 230 is used to fix the headstock 110 and the first segment 210 together. For example, the notch 213 can also serve as an adhesive injection port. When the headstock 110 is installed at the first segment 210, adhesive can be injected through the notch 213 to form the adhesive layer 230. In this embodiment, the insertion part 10, by fixing the headstock 110 and the first segment 210 together through the adhesive layer 230, can enhance the reliability of the connection between the headstock 110 and the first segment 210.

[0061] In some embodiments, the insertion portion further includes a protective layer 240, such as Figure 2 As shown. After the head end seat 110 is connected to the first segment of the snake bone 210, a protective layer 240 can be provided on the outer surface of the head end seat 110 and the first segment of the snake bone 210. The protective layer 240 is used to cover the connection between the head end seat 110 and the first segment of the snake bone 210, such as... Figure 2As shown. For example, the protective layer 240 can be an adhesive layer formed by injection molding, or the protective layer 240 can be a skin layer. The protective layer 240 can wrap the exposed camera module 120, wing 211, wire harness 220, etc., to prevent damage to the cavity when inserted into the cavity.

[0062] The third aspect of this embodiment provides a detailed description of the endoscope.

[0063] 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.

[0064] 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.

[0065] The endoscope of this embodiment, including the insertion part of any of the technical solutions in this embodiment, is beneficial to maintaining the balance between the internal space of the head end seat 110 and the size of the head end component.

[0066] 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.

[0067] 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.

[0068] 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 head-end assembly for use in an endoscope, comprising: The head end assembly includes a head end seat (110), which is mounted on the first segment (210) of the snake bone assembly (200). The head end seat (110) has a first width and a second width, wherein the first width is smaller than the second width. The first width is the width of the head end seat (110) along the first radial direction, the second width is the width of the head end seat (110) along the second radial direction, and the first radial direction is the direction in which the head end seat (110) connects to the first serpentine bone (210), and the second radial direction is perpendicular to the first radial direction.

2. The head assembly of claim 1, wherein, The cross-section of the head end seat (110) is one of elliptical, quasi-elliptical, rectangular, or quasi-rectangular.

3. The head-end assembly according to claim 1 or 2, characterized in that, It also includes a camera module (120), which is disposed on the head end seat (110) and in the axial direction of the head end seat (110), the camera module (120) partially overlaps with the first segment of the snake bone (210).

4. The head assembly of claim 3, wherein, The length of the overlapping portion of the camera module (120) and the first segment of the snake bone (210) satisfies: L0 = 1 / 10L ~ 1 / 2L. Wherein, L0 is the length of the overlapping part of the camera module (120) and the first segment of the snake bone (210), and L is the length of the camera module (120) in the axial direction.

5. The head assembly of claim 3, wherein, The head end base (110) is also provided with a through hole (130) for installing an instrument tube (140), and the through hole (130) and the camera module (120) are distributed along the second radial direction of the head end base (110).

6. An insertion portion characterized by, It includes a head end assembly (100) and a snake bone assembly (200), wherein the head end assembly (100) is the head end assembly according to any one of claims 1 to 5, and the first segment of the snake bone (210) of the snake bone assembly (200) is connected to the head end assembly (100). Furthermore, at least two winglets (211) are provided at the distal end of the first snake bone (210), with two adjacent winglets (211) spaced apart. When the head end assembly (100) is installed at the first snake bone (210), the winglets (211) are in contact with the two sides of the head end seat (110).

7. The insert of claim 6, wherein The first section of the snake bone (210) is also provided with a stop part (212). When the head end assembly (100) is installed on the first section of the snake bone (210), the stop part (212) is used to limit the axial movement of the head end seat (110).

8. The insert of claim 6, wherein, The first segment of the snake bone (210) is also provided with a notch (213), which is located on the wire harness (220) mounting side of the first segment of the snake bone (210) and / or the notch (213) is located on the instrument tube (140) mounting side of the first segment of the snake bone (210).

9. The insert according to any one of claims 6 to 8, characterized in that It also includes an adhesive layer (230), which is disposed between the head end seat (110) and the first segment of the snake bone (210), and the adhesive layer (230) is used to fix the head end seat (110) and the first segment of the snake bone (210) in place; And / or, the insertion part further includes a protective layer (240), which is disposed on the outer surface of the head end seat (110) and the first segment of the snake bone (210), and the protective layer (240) is used to cover the connection between the head end seat (110) and the first segment of the snake bone (210).

10. An endoscope characterized by comprising: Includes the insertion portion as described in any one of claims 6 to 9.

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