Traction rope mounting structure, insertion part, and endoscope

Abstract

The utility model discloses a traction rope mounting structure, an insertion part and an endoscope, and relates to the technical field of medical instruments. The traction rope mounting structure disclosed by the utility model is applied to the endoscope. The traction rope installation structure comprises a traction rope, a switching sleeve and an installation basic part, the near end of the traction rope is used for being connected with a traction wheel on an endoscope handle, the part, close to the far end of the traction rope, of the traction rope is sleeved with the switching sleeve, and the traction rope is fixedly connected with the switching sleeve; the adapter sleeve is welded and fixed with the side wall of the mounting basic part, so that the traction rope is fixedly mounted on the mounting basic part; and the mounting basic part is a snake bone first section or a front end seat of the endoscope insertion part. The scheme at least can be used for improving the connection reliability of the traction rope and the far end of the insertion part.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a traction rope installation structure, an insertion portion and an endoscope. Background Art

[0002] As a medical device that can directly reach the lesion, endoscopes have been increasingly widely used in the diagnosis and treatment of diseases. In the specific operation process, the endoscope controls the bending of the insertion part to facilitate insertion into the human body cavity, and uses the camera at the front end of the insertion part to obtain image information of the affected part.

[0003] In the related endoscope technology, the proximal end of the traction rope is connected to the rotating wheel of the handle, and the other end is connected to the distal part of the insertion part, so that the traction rope can be pulled by rotating the rotating wheel, thereby pulling the distal end of the insertion part to achieve bending. However, in practice, the connection between the traction rope and the distal end of the insertion part often detaches, resulting in a limited service life of the endoscope. Utility Model Content

[0004] The present application provides a traction rope installation structure, an insertion portion and an endoscope, which can at least be used to improve the connection reliability between the traction rope and the distal end of the insertion portion.

[0005] In a first aspect, an embodiment of the present application provides a traction rope installation structure, which is applied to an endoscope. The traction rope installation structure includes a traction rope, a transition sleeve and a mounting base, wherein:

[0006] The proximal end of the traction rope is used to connect to the traction wheel on the endoscope handle, the portion of the traction rope close to the distal end thereof is sleeved with the adapter sleeve, and the traction rope is fixedly connected to the adapter sleeve;

[0007] The adapter sleeve is welded and fixed to the side wall of the mounting base component so that the traction rope is fixedly mounted on the mounting base component; the mounting base component is the snake bone first section or the front end seat of the endoscope insertion part.

[0008] In some embodiments of the present application, along the radial direction of the traction rope installation structure, the welding portion between the adapter sleeve and the installation base member passes through the side wall of the installation base member and the first side wall of the adapter sleeve, and extends to the traction rope; wherein the first side wall of the adapter sleeve is the side wall of the adapter sleeve that is welded and fixed to the installation base member;

[0009] In some embodiments of the present application, the adapter sleeve and the mounting base are welded by laser welding.

[0010] In some embodiments of the present application, along the radial direction of the traction rope installation structure, the welding portion passes through the traction rope and extends to the second side wall of the adapter sleeve; wherein the second side wall of the adapter sleeve is arranged opposite to the first side wall.

[0011] In some embodiments of the present application, the traction rope has a limiting portion arranged at its distal end, and the traction rope is limitedly cooperated with the adapter sleeve at the distal opening of the adapter sleeve through the limiting portion, and the traction rope is welded and fixed to the side wall of the mounting base through the limiting portion.

[0012] In some embodiments of the present application, when the adapter sleeve is welded and fixed to the first section of the serpentine bone, the limiting portion extends out of the distal end of the first section of the serpentine bone and cooperates with the first section of the serpentine bone in a limiting manner.

[0013] In some embodiments of the present application, the welding parts between the adapter sleeve and the mounting base are distributed along the axial direction of the adapter sleeve.

[0014] In some embodiments of the present application, when the adapter sleeve is welded and fixed to the first section of the snake bone, at least one end of the adapter sleeve extends out of the corresponding end of the first section of the snake bone along the axial direction of the traction rope mounting structure.

[0015] In a second aspect, an embodiment of the present application provides an insertion portion, comprising the traction rope installation structure described in the first aspect of the embodiment of the present application.

[0016] In some embodiments of the present application, the adapter sleeve is extended and arranged in the first section of the snake bone and the front end seat of the insertion part, and the adapter sleeve is welded and fixed to the first section of the snake bone and the front end seat.

[0017] In a third aspect, an embodiment of the present application provides an endoscope, comprising a handle and an insertion portion as described in the third aspect of the embodiment of the present application, wherein the handle is connected to the insertion portion.

[0018] The technical solution adopted in the embodiments of the present application can achieve the following beneficial effects:

[0019] In the traction rope installation structure disclosed in the embodiment of the present application, the traction rope is fixedly connected to the adapter sleeve, and the traction rope is welded and fixed at the far end of the insertion part by welding the adapter sleeve to the installation base. In this way, since the adapter sleeve is sleeved on the outside of the traction rope, its radial dimension is larger than the radial dimension of the traction rope. During the welding operation, the adapter sleeve is more likely to contact with the welding medium, which reduces the difficulty of welding and can ensure that the welding is more reliable to a certain extent.

[0020] Secondly, the traction rope installation structure of the embodiment of the present application accommodates the traction rope through the adapter sleeve. The adapter sleeve has a certain rigidity and will not bend like the traction rope. In this way, the adapter sleeve can be welded and fixed to the side wall of the installation base according to the preset welding position, thereby achieving reliable welding.

[0021] It can be seen that the traction rope installation structure of the embodiment of the present application can effectively improve the connection reliability between the traction rope and the distal end of the insertion part, thereby reducing the risk of the traction rope being detached from the distal end of the insertion part and extending the service life of the endoscope. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0023] In the attached picture:

[0024] Figure 1 This is a schematic structural diagram of a traction rope installation structure disclosed in the first embodiment of the present application;

[0025] Figure 2 A top view of the traction rope installation structure disclosed in the first embodiment of the present application;

[0026] Figure 3 for Figure 2 Sectional view along AA direction;

[0027] Figure 4 A top view of a traction rope installation structure disclosed in a second embodiment of the present application;

[0028] Figure 5 for Figure 4 Cross-sectional view along the BB direction;

[0029] Figure 6 A top view of a traction rope installation structure disclosed in a third embodiment of the present application;

[0030] Figure 7 for Figure 6 Sectional view along CC direction.

[0031] Description of reference numerals:

[0032] 100-traction rope, 110-limiting part,

[0033] 200-adapter sleeve, 210-first side wall, 220-second side wall,

[0034] 300-Snake bone first section,

[0035] P-welding part. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0037] In each embodiment of the present application, "proximal end" and "distal end" refer to the position of the endoscope and its components and accessories relative to the user in the use environment, wherein the end closer to the user is designated as the "proximal end" and the end farther from the user is designated as the "distal end".

[0038] In order to facilitate understanding of the traction rope installation structure, insertion part and endoscope provided in the embodiments of the present application, the relevant technologies are first introduced in conjunction with the application scenarios.

[0039] After the relevant endoscope has been used for a long time, the connection between the traction rope and the distal end of the insertion part is detached, and the traction force transmitted by the traction rope cannot be applied to the distal end of the insertion part, which makes it impossible to achieve normal bending action, thereby causing the endoscope to be scrapped.

[0040] After research, the inventor found that this problem is mainly caused by the poor reliability of the connection method between the traction rope and the distal end of the insertion part in the related technology. Specifically, the traction rope and the distal end of the insertion part are often fixedly connected by welding. During the welding process, one side of the distal end of the traction rope is located inside the first section of the snake bone or the front end seat, which requires welding without vision or with poor vision. The traction rope is very thin and the distal structure of the insertion part is also very small, which makes the welding operation extremely difficult and often makes it impossible to reliably weld the traction rope. In addition, welding requires melting the traction rope, which also reduces the strength of the welding part of the traction rope and increases the risk of breakage. The above factors will lead to low reliability of the connection between the traction rope and the distal end of the insertion part.

[0041] In view of this, an embodiment of the present application provides a traction rope installation structure for use in an endoscope.

[0042] See also Figure 1 to Figure 7 The installation structure of the traction rope 100 disclosed in the embodiment of the present application includes a traction rope 100, a transition sleeve 200 and an installation base, wherein:

[0043] The traction rope 100 is an important part of the traction mechanism of the endoscope. Its proximal end is used to connect to the traction wheel on the handle of the endoscope, and its distal end is used to connect to the distal end of the insertion part. In this way, the traction wheel is driven to rotate on the handle side, and the traction rope 100 can be pulled, and only the traction rope 100 pulls the distal end of the insertion part, thereby driving the active bending section of the insertion part to achieve bending. Of course, the embodiment of the present application does not limit the fixed position of the distal end of the traction rope 100, which can be fixed on the snake bone first section 300, or on the front end seat of the front end assembly of the insertion part.

[0044] At the same time, the portion of the traction rope 100 near its distal end is covered with the adapter sleeve 200, and the traction rope 100 is fixedly connected to the adapter sleeve 200; the adapter sleeve 200 is welded and fixed to the side wall of the installation base, so that the traction rope 100 is fixedly installed on the installation base. Figure 1 As shown, the mounting base member can be the first snake bone section 300 of the endoscope insertion part; of course, the mounting base member can also be the front end seat of the front end assembly of the endoscope insertion part. It is worth noting that the front end assembly of the endoscope insertion part is located at the far end of the insertion part, which is connected to the snake bone section that realizes the bending action. Usually, the first snake bone section 300 of the snake bone section can be connected to the front end seat of the front end assembly.

[0045] It can be seen that the adapter sleeve 200 is a adapter structure between the traction rope 100 and the installation base component. That is to say, the embodiment of the present application does not directly fix the traction rope 100 to the installation base component, but fixes the adapter sleeve 200 to the installation base component to form a module, thereby realizing indirect fixation of the traction rope 100 on the installation base component.

[0046] The adapter sleeve 200 and the mounting base are fixed by welding, which has a better and more reliable connection effect than clamping, bonding and other methods.

[0047] It is worth emphasizing that the adapter sleeve 200 of the embodiment of the present application is mounted on the outside of the traction rope 100, which means that the radial dimension of the adapter sleeve is larger than the radial dimension of the traction rope 100. During the welding operation, the adapter sleeve 200, which occupies a larger space than the traction rope 100, is obviously easier to contact with the welding medium (the flame of flame welding, the laser beam of laser welding, etc.). This reduces the difficulty of welding and can ensure that the welding is more reliable to a certain extent.

[0048] In addition, as a structure with a certain flexibility, the traction rope 100, after being inserted into the first section 300 of the snake bone or the front end seat, is likely to have a certain curvature at the inserted position, which will deviate from the preset welding position, resulting in failure to weld reliably. In contrast, the installation structure of the traction rope 100 of the embodiment of the present application accommodates the traction rope 100 through the adapter sleeve 200, which has a certain rigidity and will not bend like the traction rope 100. In this way, the adapter sleeve 200 can be welded and fixed to the side wall of the installation base according to the preset welding position, thereby achieving reliable welding.

[0049] From the above analysis, it can be seen that the installation structure of the traction rope 100 of the embodiment of the present application forms a module by fixing the traction rope 100 and the adapter sleeve 200, and then uses the adapter sleeve 200 to weld the installation base to avoid the problems existing in directly welding the traction rope 100, so as to effectively improve the welding reliability, that is, improve the connection reliability between the traction rope 100 and the distal end of the insertion part, thereby reducing the risk of the traction rope 100 being detached from the distal end of the insertion part, and extending the service life of the endoscope.

[0050] Considering that the endoscope is a relatively precise and compact instrument, in the installation structure of the traction rope 100 disclosed in the embodiment of the present application, the adapter sleeve 200 and the installation base can be welded by laser welding.

[0051] like Figure 3 As shown, in some embodiments of the present application, along the radial direction of the installation structure of the traction rope 100, the welding portion P between the adapter sleeve 200 and the installation base member passes through the side wall of the installation base member and the first side wall 210 of the adapter sleeve 200, and extends to the traction rope 100, so as to simultaneously weld and fix the traction rope 100 and the adapter sleeve 200; wherein, the first side wall 210 of the adapter sleeve 200 is the side wall on the adapter sleeve 200 that is welded and fixed to the installation base member.

[0052] exist Figure 3 In the illustrated embodiment, the dashed arrow indicates the welding direction, which is of course not particularly limited. For example, welding may also be performed from the inside of the mounting base. Figure 3 In FIG. 1 , the area between the two dotted lines shows the extending depth of the welding position P.

[0053] It should be understood that the welding part P is the part where the various structures to be welded are melted into one. In this example, in addition to connecting the first side wall 210 of the adapter sleeve 200 and the side wall of the installation base, the welding part P also penetrates to the traction rope 100, that is, the welding part P of this example simultaneously realizes the welding fixation of the installation base, the adapter sleeve 200 and the traction rope 100.

[0054] It should be noted that in the embodiment of the present application, the traction rope 100 needs to be fixedly connected with the adapter sleeve 200. Then, in combination with this example, the traction rope 100 can be pre-fixed with the adapter sleeve 200 before welding, and welding will further enhance the connection reliability between the two; or, the traction rope 100 and the adapter sleeve 200 are not pre-fixed, but they and the installation base are welded and fixed at one time through welding to simplify the assembly process and improve assembly efficiency.

[0055] Since the traction rope 100 is constrained in the adapter sleeve 200, it will not bend and its position is fixed. During the welding process, the position of the traction rope 100 can be accurately located to achieve accurate welding, thereby ensuring welding reliability. In addition, it is also constrained by the adapter sleeve 200, even if the welding part P on the traction rope 100 is melted, the shape does not change significantly, and its strength is less affected. Moreover, the installation base, the adapter sleeve 200 and the traction rope 100 are welded as one body, and the strength of the overall structure at the corresponding welding part P itself will be improved, and strength compensation can also be achieved.

[0056] Furthermore, if Figure 3 As shown, along the radial direction of the installation structure of the traction rope 100 , the welding part P passes through the traction rope 100 and extends to the second side wall 220 of the adapter sleeve 200 ; wherein the second side wall 220 of the adapter sleeve 200 is arranged opposite to the first side wall 210 .

[0057] It should be understood that in this example, the first side wall 210 and the second side wall 220 of the adapter sleeve 200 are distributed in the welding direction. Under such a layout, on the basis of welding and fixing the installation base, the adapter sleeve 200 and the traction rope 100 at the same time, the traction rope 100 is welded on both sides facing the first side wall 210 and the second side wall 220, that is, the welding position P is symmetrically distributed on the opposite sides of the traction rope 100. In this way, when the traction rope 100 pulls the adapter sleeve 200, its force is distributed on the opposite sides, which is more conducive to avoiding stress concentration compared to the single-sided welding method of the traction rope 100 and the adapter sleeve 200, thereby further improving the connection reliability of the traction rope 100 and the adapter sleeve 200.

[0058] In some embodiments of the present application, the traction rope 100 has a limiting portion 110 disposed at its distal end, and the traction rope 100 is limitedly matched with the adapter sleeve 200 at the distal end opening of the adapter sleeve 200 through the limiting portion 110, and the traction rope 100 is welded and fixed to the side wall of the installation base through the limiting portion 110. The embodiment of the present application does not limit the specific shape of the limiting portion 110. For example, Figure 4 and Figure 5 As shown, the limiting portion 110 is substantially a sphere. Figure 6 and Figure 7 As shown, the limiting portion 110 is substantially cylindrical.

[0059] It should be understood that, thanks to the limiting function of the limiting portion 110, after the traction rope 100 is passed through the adapter sleeve 200, it is more convenient to quickly install the traction rope 100, and at the same time, it can prevent the distal end of the traction rope 100 from entering the adapter sleeve 200 and becoming unable to be positioned.

[0060] In addition, the limiting portion 110 in this example is also welded to the side wall of the mounting base, which will increase the welding points inside the mounting structure of the traction rope 100, thereby further enhancing the connection reliability. It is worth noting that the limiting portion 110 is provided at the far end of the traction rope 100, and it is usually necessary to pile up materials to form a structure larger than the original radial width of the traction rope 100. Even if welding is performed on the limiting portion 110, the strength of this part will not be significantly reduced.

[0061] Furthermore, if Figure 4 to Figure 7 As shown, when the adapter sleeve 200 is welded and fixed to the first section of the snake bone 300, the limiting portion 110 extends out of the distal end of the first section of the snake bone 300 and is limitedly matched with the first section of the snake bone 300. It should be understood that under such a layout, when the adapter sleeve 200 is tightly fitted on the inner wall of the first section of the snake bone 300, there will be no situation where the limiting portion 110 abuts against and interferes with the inner wall of the first section of the snake bone 300, which is beneficial to the structural layout of the installation structure of the traction rope 100.

[0062] In addition, the limiting portion 110 is also limitedly cooperated with the snake bone first section 300 at the distal end of the snake bone first section 300. Compared with the limiting portion 110 only being limitedly cooperated with the adapter sleeve 200, such a layout can increase the contact area of ​​the traction rope 100 through the limiting portion 110 to achieve limiting cooperation, thereby sharing the internal force and avoiding stress concentration when the traction rope 100 applies traction force. It can also prevent the traction rope 100 from detaching to a certain extent, thereby improving the connection reliability of the traction rope 100 at the distal end of the insertion part.

[0063] like Figure 2 As shown, in some embodiments of the present application, the welding position P between the transition sleeve 200 and the installation base is distributed along the axial direction of the transition sleeve 200 . Figure 2 In FIG. 1 , the area enclosed by the dotted line shows the extension range of a welding position P.

[0064] It should be understood that in the related art, when welding the traction rope 100 to the installation base, the welding points are formed by spot welding, but such welding points are prone to desoldering and cause detachment problems. The main reason for this is that the traction rope 100 is not conducive to reliable welding.

[0065] In this example, the welding position P is distributed along the axial direction of the adapter sleeve 200, that is, the welding is performed along the axial path of the adapter sleeve 200. With such a layout, the adapter sleeve 200 can provide a larger welding area than the traction rope 100, which makes it easier to weld the adapter sleeve 200 to the side wall of the installation base component and avoid empty welds. In addition, the adapter sleeve 200 extends in a straight line and does not have a bending arc like the traction rope 100, which makes it easier to control the welding path and thus ensure the welding quality.

[0066] Furthermore, if Figure 2 As shown, the welding part P extends from the proximal end to the distal end of the snake bone first section 300, so that the welding part P between the adapter sleeve 200 and the snake bone first section 300 (ie, the installation base component) can be larger in size, thereby improving the connection reliability.

[0067] Furthermore, when the adapter sleeve 200 is welded and fixed to the first section of the snake bone 300, along the axial direction of the installation structure of the traction rope 100, at least one end of the adapter sleeve 200 extends out of the corresponding end of the first section of the snake bone 300. Figure 2 As shown, the proximal end of the adapter sleeve 200 extends out of the proximal end of the snake bone first section 300 .

[0068] It should be understood that under such a layout, during welding along the axial direction of the adapter sleeve 200, the portion of the adapter sleeve 200 extending out of the end of the snake bone first section 300 can be used as a reference to determine the axial extension path of the adapter sleeve 200, thereby ensuring accurate identification of the welding path to optimize the welding quality.

[0069] In addition, during welding along the axial direction of the adapter sleeve 200, the welding medium can easily pass through the end of the snake bone first section 300 and contact the devices inside the snake bone segment (such as instrument tubes or cables, etc.), which may cause damage to these devices; in this example, the portion of the adapter sleeve 200 extending out of the snake bone first section 300 can shield the welding medium, thereby preventing the devices inside the snake bone segment from contacting the welding medium and being damaged.

[0070] Based on the aforementioned installation structure of the traction rope 100, some embodiments of the present application provide an insertion portion. The insertion portion may include the installation structure of the traction rope 100 mentioned in any of the aforementioned solutions, thereby having the beneficial effects of the aforementioned installation structure of the traction rope 100.

[0071] In some embodiments of the present application, the adapter sleeve 200 is extended and arranged in the snake bone first section 300 and the front end seat of the insertion part, and the adapter sleeve 200 is welded and fixed to the snake bone first section 300 and the front end seat. It should be understood that such a layout can further increase the size of the welding part P, which will make the traction rope 100, the adapter sleeve 200, the snake bone first section 300 and the front end seat all fixed together. In the case where the traction rope 100 pulls the distal end of the insertion part, more structures can share the internal force generated by the pulling force, thereby avoiding stress concentration, preventing the traction rope 100 from detaching, and improving the connection reliability of the traction rope 100 at the distal end of the insertion part.

[0072] Based on the aforementioned insertion part, some embodiments of the present application provide an endoscope. The endoscope includes a handle and the insertion part mentioned in any of the aforementioned solutions, and the handle is connected to the insertion part. In this way, the endoscope has the beneficial effects of the aforementioned insertion part, which will not be repeated.

[0073] The endoscope referred to in the embodiments of the present application may be a bronchoscope, a pyeloscope, an esophagoscope, a gastroscope, a colonoscope, an otoscope, a rhinoscope, a stomatoscope, a laryngoscope, a colposcope, a laparoscope, an arthroscope, etc. The embodiments of the present application do not impose any specific restrictions on the type of endoscope.

[0074] The above embodiments of the present application focus on describing the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here.

[0075] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A traction rope installation structure, applied to an endoscope, characterized in that: The traction rope installation structure comprises a traction rope, a transfer sleeve and an installation base, wherein: The proximal end of the traction rope is used to connect to the traction wheel on the endoscope handle, the portion of the traction rope close to the distal end thereof is sleeved with the adapter sleeve, and the traction rope is fixedly connected to the adapter sleeve; The adapter sleeve is welded and fixed to the side wall of the mounting base component so that the traction rope is fixedly mounted on the mounting base component; the mounting base component is the snake bone first section or the front end seat of the endoscope insertion part.

2. The traction rope installation structure according to claim 1, characterized in that: Along the radial direction of the traction rope installation structure, the welding portion between the adapter sleeve and the installation base member passes through the side wall of the installation base member and the first side wall of the adapter sleeve, and extends to the traction rope; wherein the first side wall of the adapter sleeve is the side wall of the adapter sleeve that is welded and fixed to the installation base member; And / or, the adapter sleeve and the mounting base are welded by laser welding.

3. The traction rope installation structure according to claim 2, characterized in that: Along the radial direction of the traction rope installation structure, the welding portion passes through the traction rope and extends to the second side wall of the adapter sleeve; wherein the second side wall of the adapter sleeve is arranged opposite to the first side wall.

4. The traction rope installation structure according to any one of claims 1 to 3, characterized in that: The traction rope has a limiting portion arranged at its distal end, and the traction rope is limitedly matched with the adapter sleeve at the distal end opening of the adapter sleeve through the limiting portion, and the traction rope is welded and fixed to the side wall of the mounting base through the limiting portion.

5. The traction rope installation structure according to claim 4, characterized in that: When the adapter sleeve is welded and fixed to the first section of the snake bone, the limiting portion extends out of the distal end of the first section of the snake bone and cooperates with the first section of the snake bone in a limiting manner.

6. The traction rope installation structure according to any one of claims 1 to 3, characterized in that: The welding parts between the adapter sleeve and the installation base are distributed along the axial direction of the adapter sleeve.

7. The traction rope installation structure according to claim 6, characterized in that: When the adapter sleeve is welded and fixed to the first section of the snake bone, along the axial direction of the traction rope installation structure, at least one end of the adapter sleeve extends out of the corresponding end of the first section of the snake bone.

8. An insertion portion, characterized in that: The invention comprises the traction rope installation structure according to any one of claims 1 to 7.

9. The insertion portion according to claim 8, characterized in that: The adapter sleeve is extended and arranged in the first section of the snake bone and the front end seat of the insertion part, and the adapter sleeve is welded and fixed to the first section of the snake bone and the front end seat.

10. An endoscope, characterized in that: It comprises a handle and the insertion part according to claim 8 or 9, wherein the handle is connected to the insertion part.

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