Skin assembly, active bending section, insertion part, and endoscope

Abstract

Disclosed in the present application are a skin assembly, an active bending section, an insertion part, and an endoscope, which relate to the technical field of medical devices. The skin assembly of the present application is used for active bending of an endoscope. The skin assembly comprises at least a first skin section and a second skin section, wherein the first skin section is located at the proximal end of the active bending, the second skin section is located at the distal end of the active bending, and the hardness of the first skin section is greater than the hardness of the second skin section. When the skin assembly of the present application is used for bending of the active bending section, the active bending section can achieve the form in which the distal end bends first and then the proximal end bends, which is beneficial to reducing the area covered by the distal end during the bending process of the active bending section. When a doctor uses the skin assembly in surgery, not only can the operation difficulty be reduced, but tissue damage can also be avoided.

Description

Skin assembly, active bending section, insertion part and endoscope TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a skin assembly, an active bending section, an insertion part and an endoscope. BACKGROUND

[0002] The insertion part of the endoscope comprises an active bending section and a passive bending section, and the active bending section is located at the distal end of the insertion part. In the related art, a traction rope is arranged in the handle, the distal end of the traction rope is fixedly connected with a snake bone joint at the distal end of the active bending section, and the proximal end of the traction rope is fixedly connected with a thumbwheel or a knob on the handle. By operating the thumbwheel or the knob, the traction rope can be moved in a synchronous and opposite direction, so that the active bending section of the insertion part is bent. The distal end of the active bending section is provided with a camera module, and the pointing direction of the camera module can be adjusted by bending the active bending section, so that the camera module is aligned with the lesion site to provide diagnostic information for the doctor.

[0003] However, the inventors have found that when the active bending section is bent, the proximal end of the active bending section bends first, and this bending mode causes the distal end of the active bending section to sweep a large area during the bending process. When the active bending section needs to be bent to the end of the lower calyx during the operation of the doctor, the operation difficulty is relatively large. Content of the utility model

[0004] The present application discloses a skin assembly, an active bending section, an insertion part and an endoscope to solve the technical problem that the distal end of the active bending section of the endoscope sweeps a large area when it is bent in the related art, which causes the operation difficulty of the doctor to be relatively large.

[0005] In order to solve the above problems, the technical scheme adopted by the present application is as follows:

[0006] The skin assembly of the present application is used for active bending of the endoscope, and at least comprises a first skin section and a second skin section, wherein the first skin section is located at the proximal end of the active bending, the second skin section is located at the distal end of the active bending, and the hardness of the first skin section is greater than that of the second skin section.

[0007] The active bending section of the present application comprises a snake bone body and a skin assembly, the skin assembly is the skin assembly described in any one of the technical solutions of the present application, and the first skin section in the skin assembly covers the proximal end of the snake bone body, and the second skin section in the skin assembly covers the distal end of the snake bone body.

[0008] The insertion part of the present application comprises an active bending section and a passive bending section, the active bending section is the active bending section described in any one of the technical solutions of the present application, and the proximal end of the active bending section is connected with the distal end of the passive bending section.

[0009] The endoscope of the present application comprises an insertion part and a handle, the insertion part is the insertion part described in any of the technical solutions of the present application, and the proximal end of the insertion part is connected with the handle.

[0010] The technical solution adopted by the present application can achieve the following beneficial effects:

[0011] The skin assembly of the present application at least comprises a first skin segment and a second skin segment, the first skin segment is located at the proximal end of the active bending segment, the second skin segment is located at the distal end of the active bending segment, and the hardness of the first skin segment is greater than that of the second skin segment. Through the action of the skin assembly, the hardness of the distal end of the active bending segment is less than that of the proximal end. When the active bending segment is bent by the traction rope, the distal end of the active bending segment is easier to deform and bend than the proximal end because the hardness of the distal end is less than that of the proximal end. As the tension of the traction rope increases, the proximal end of the active bending segment with greater hardness can also deform and bend, thereby enabling the active bending segment to bend in a manner that the distal end bends first and the proximal end bends later.

[0012] The manner that the distal end of the active bending segment bends first and the proximal end bends later is beneficial to reducing the area swept by the distal end during the bending process of the active bending segment. When a doctor uses it in surgery, for example, when the doctor needs to bend the active bending segment from the upper calyx of the kidney to the lower calyx of the kidney, not only can the operation difficulty be reduced, but also the problem of kidney damage caused by the excessive area swept during the bending process of the active bending segment can be avoided. That is, by using the skin assembly of the present application, the technical problem that the distal end of the active bending segment sweeps a large area when it bends in the related art, resulting in a large operation difficulty for the doctor in surgery, can be solved. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creating laborious work.

[0014] Fig. 1 is a schematic view of the endoscope of the embodiment of the present application;

[0015] Fig. 2 is a first schematic view of the active bending segment of the embodiment of the present application;

[0016] Fig. 3 is a second schematic view of the active bending segment of the embodiment of the present application;

[0017] Fig. 4 is an enlarged view of part A in Fig. 3;

[0018] Fig. 5 is a third schematic view of the active bending segment of the embodiment of the present application;

[0019] Fig. 6 is an enlarged view of part B in Fig. 5;

[0020] Fig. 7 is a schematic view of the active bending section in a bent state according to an embodiment of the present application;

[0021] Fig. 8 is a schematic view of a bending path of the active bending section according to an embodiment of the present application.

[0022] Fig. 1 is a schematic view of an active bending section according to an embodiment of the present application; Fig. 2 is a schematic view of a passive bending section according to an embodiment of the present application; Fig. 3 is a schematic view of a handle according to an embodiment of the present application; Fig. 4 is a schematic view of a snake body according to an embodiment of the present application; Fig. 5 is a schematic view of an active bending section according to an embodiment of the present application; Fig. 6 is an enlarged view of part B in Fig. 5; Fig. 7 is a schematic view of the active bending section in a bent state according to an embodiment of the present application; Fig. 8 is a schematic view of a bending path of the active bending section according to an embodiment of the present application. DETAILED DESCRIPTION

[0023] The terms "first", "second", and the like in the description and claims of the present application are used for distinguishing between similar objects and are not necessarily used to describe a sequence or an order. It is understood that the data used with "first", "second", and the like can be interchanged, such that the case of "first" can be equally expressed with "second", and vice versa, unless otherwise specified. The terminology or description applied by a person of ordinary skill in the art to the same or similar aspects is understood to be equivalent to the terminology or description applied to other similar aspects within the context of the present application. The terms "and / or" and / or "at least one of" followed by a list of two or more items are understood to mean that three or more of the listed items can be present at least once, and that one or more of the listed items can be present one or more times (e.g., that the list is interpreted to be a list of at least one item selected from the group of items consisting of the individual items or a combination of two or more of the individual items). The term "about" means that quantities, dimensions, sizes, formulations, parameters, shapes and other characteristics need not be exact, but can be approximated and / or

[0024] In the embodiments of the present application, "proximal end" and "distal end" refer to the relative positions of the components with respect 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".

[0025] In the related art, the active bending section includes a plurality of snake segments, each snake segment is provided with a traction rope channel on the wall surface for the traction rope to pass through, the traction rope channel is recessed towards the center of the active bending section, and the recessed area is used for mounting the traction rope. The traction rope passes through each snake segment, and the distal end of the traction rope is fixed to the distal end of the active bending section. In addition, adjacent snake segments are connected by rivets. When the active bending section is bent by the traction rope, the force exerted by the traction rope needs to overcome the friction between the rivets and the snake segments, so as to bend the active bending section.

[0026] However, the inventors have found that when the active bending section is bent by the traction rope, the force exerted by the traction rope causes the proximal end of the active bending section to bend first, and the distal end to bend later. This bending mode causes the distal end of the active bending section to sweep a larger area during bending, which makes it more difficult for a doctor to use the active bending section in an operation, for example, when the active bending section needs to be bent to the lower calyx end.

[0027] To this end, the present application provides a skin assembly, which comprises at least a first skin segment and a second skin segment, the first skin segment is located at the proximal end of the active bending segment, the second skin segment is located at the distal end of the active bending segment, and the hardness of the first skin segment is greater than that of the second skin segment. Through the action of the skin assembly, the hardness of the distal end of the active bending segment is less than that of the proximal end of the active bending segment. When the active bending segment is bent, the hardness of the distal end of the active bending segment is less than that of the proximal end, so that the active bending segment can realize the form of bending the distal end first and then bending the proximal end. This bending form is beneficial to reducing the area swept by the distal end during bending of the active bending segment, and can reduce the operation difficulty when used by a doctor during surgery.

[0028] The skin assembly, the active bending segment, the insertion part and the endoscope provided by the present application will be described in detail below in combination with specific embodiments and application scenarios thereof with reference to FIGS. 1 to 8.

[0029] The first aspect of the present embodiment describes the skin assembly in detail.

[0030] The skin assembly of the present embodiment is used on the active bending segment 100 of the endoscope, as shown in FIGS. 2, 3 and 5. For example, the skin assembly of the present embodiment is used on the entire active bending segment 100, and the skin assembly is wrapped on the active bending segment 100 to protect the snake body 140 and form a smooth structure on the surface of the active bending segment 100.

[0031] The endoscope comprises an insertion part 300 and a handle 400, the insertion part 300 is used to be inserted into a cavity, and the handle 400 is provided with an operating member for facilitating operation by a doctor, as shown in FIG. 1. The insertion part 300 has an active bending segment 100 and a passive bending segment 200, the active bending segment 100 is located at the distal end, and the passive bending segment 200 is located at the proximal end, as shown in FIG. 1. The insertion part 300 is further provided with an instrument tube for inserting an instrument. The distal end surface of the active bending segment 100 is provided with a camera module and other structures. The active bending segment 100 can be in a straightened state or a bent state under the action of a traction rope, as shown in FIGS. 2, 3, 5 and 7.

[0032] In some embodiments, the skin assembly comprises at least a first skin segment 110 and a second skin segment 120, as shown in FIG. 2. The first skin segment 110 is located at the proximal end of the active bending segment 100, and the second skin segment 120 is located at the distal end of the active bending segment 100, as shown in FIG. 2. For example, the first skin segment 110 is wrapped on the outer wall of the snake body 140 at the proximal end of the active bending segment 100, and the second skin segment 120 is wrapped on the outer wall of the snake body 140 at the distal end of the active bending segment 100.

[0033] For example, the distal end of the active bending section 100 and the proximal end of the active bending section 100 are divided by the middle part of the active bending section 100, the distal end of the division line is the distal end of the active bending section 100, and the proximal end of the division line is the proximal end of the active bending section 100. Not limited to this, the distal end of the active bending section 100 and the proximal end of the active bending section 100 can also use other division methods.

[0034] In some embodiments, the hardness of the first skin section 110 is greater than the hardness of the second skin section 120. The hardness of the first skin section 110 being greater than the hardness of the second skin section 120 means that the first skin section 110 deforms less than the second skin section 120 when subjected to the same force, that is, the first skin section 110 is less likely to deform than the second skin section 120 when subjected to the same force, or that the elastic modulus of the first skin section 110 is greater than the elastic modulus of the second skin section 120.

[0035] For example, the first skin section 110 is made of a polysulfone material with a larger elastic modulus, and the second skin section 120 is made of a fluororesin or polyurethane material with a smaller elastic modulus.

[0036] For example, when the first skin section 110 and the second skin section 120 are made of materials with the same elastic modulus, the thickness of the first skin section 110 is greater than the thickness of the second skin section 120. For example, when the first skin section 110 and the second skin section 120 are both one layer, the thickness of the first skin section 110 is greater than the thickness of the second skin section 120, which can make the first skin section 110 less likely to deform than the second skin section 120 when the active bending section 100 is bent. For example, the thickness of the second skin section 120 is the same as the thickness of the skin of the conventional endoscope insertion portion, and the thickness of the first skin section 110 is slightly greater than the thickness of the second skin section 120. For example, the thickness of the first skin section 110 is 0.01-1 mm greater than the thickness of the second skin section 120.

[0037] For example, when the first skin section 110 and the second skin section 120 are made of materials with the same elastic modulus, the number of layers of the first skin section 110 is greater than the number of layers of the second skin section 120. That is, when the first skin section 110 and the second skin section 120 are made of materials with the same material and thickness, the number of layers of the first skin section 110 is greater than the number of layers of the second skin section 120, which can make the first skin section 110 less likely to deform than the second skin section 120 when the active bending section 100 is bent. For example, the first skin section 110 has a two-layer structure, and the second skin section 120 has a one-layer structure.

[0038] It is known that the skin assembly of the embodiment is not limited to comprising the first skin section 110 and the second skin section 120, but can also comprise a third skin section, a fourth skin section, and so on. The skin sections are sequentially arranged from the proximal end to the distal end of the active bending section 100.

[0039] With the skin assembly of the embodiment, the hardness of the distal end of the active bending section 100 can be less than the hardness of the proximal end of the active bending section 100. When the active bending section 100 is bent by the traction rope, the distal end of the active bending section 100 is more likely to deform and bend than the proximal end. As the traction rope tension increases, the proximal end of the active bending section 100, which has a greater hardness, can also deform and bend, so that the active bending section 100 can be bent in a manner that the distal end bends first and then the proximal end. This bending manner is beneficial to reducing the area swept by the distal end of the active bending section 100 during bending. When a doctor uses the active bending section 100 in surgery, for example, when the doctor needs to bend the active bending section 100 from the upper calyx to the lower calyx, the operation difficulty can be reduced, and the problem of kidney damage caused by the active bending section 100 sweeping too large an area during bending can be avoided.

[0040] In some embodiments, the hardness of the first skin section 110 gradually increases from the distal end to the proximal end. For example, the thickness of the first skin section 110 gradually increases or the number of layers gradually increases from the distal end to the proximal end, so that the hardness of the first skin section 110 gradually increases. In the scheme of the embodiment, the hardness of the first skin section 110 gradually changes from the distal end to the proximal end, so that when the active bending section 100 is bent, the proximal end can form a gradually bending manner, which is beneficial to ensuring that the distal end of the active bending section 100 bends first.

[0041] In some embodiments, the hardness of the second skin section 120 gradually increases from the distal end to the proximal end, and the hardness of the proximal end of the second skin section 120 is less than the hardness of the distal end of the first skin section 110. For example, the thickness of the second skin section 120 gradually increases or the number of layers gradually increases from the distal end to the proximal end, so that the hardness of the second skin section 120 gradually increases. In the scheme of the embodiment, the hardness of the second skin section 120 gradually changes from the distal end to the proximal end, so that when the active bending section 100 is bent, the distal end can form a gradually bending manner (as shown in FIG. 8), which is beneficial to further reducing the area swept by the active bending section 100 during bending, thereby further reducing the operation difficulty when a doctor uses the active bending section 100 in surgery.

[0042] In some embodiments, the skin assembly further comprises a connecting tube 130, as shown in FIGS. 5 and 6. The connecting tube 130 is arranged at the joint of the first skin segment 110 and the second skin segment 120, and the connecting tube 130 is used to fixedly connect the first skin segment 110 and the second skin segment 120, as shown in FIGS. 5 and 6. By fixedly connecting the first skin segment 110 and the second skin segment 120 through the connecting tube 130, the first skin segment 110 and the second skin segment 120 can be formed as a whole, and the problem of sliding or even falling off of the first skin segment 110 and the second skin segment 120 during the bending of the active bending segment 100 can be avoided.

[0043] In some embodiments, the distal end of the connecting tube 130 is embedded in the proximal end of the second skin segment 120, the proximal end of the connecting tube 130 is embedded in the distal end of the first skin segment 110, and the surface of the connecting tube 130 is flush with the surface of the first skin segment 110 and the surface of the second skin segment 120, as shown in FIGS. 5 and 6. In the scheme of the present embodiment, the surface of the connecting tube 130 is flush with the surface of the first skin segment 110 and the surface of the second skin segment 120, which can make the surface of the active bending segment 100 form a smooth and flat structure, and is conducive to maintaining the smoothness during the insertion of the insertion part 300.

[0044] In some embodiments, the first skin segment 110 and the second skin segment 120 are fixedly connected at the joint by using a high molecular material fusion butt joint method. This kind of fixed connection has the advantage of high connection reliability.

[0045] For example, the connecting tube 130 is made of a material with heating and shrinking ability, for example, the connecting tube 130 is a tubular member made of Pebax material. However, the connecting tube 130 can also be made of other similar existing high molecular materials, as long as it can be reshaped after being heated.

[0046] For example, after the connecting tube 130 is arranged at the joint of the first skin segment 110 and the second skin segment 120, the connecting tube 130 is heated to about 130°C by using a heating device, so that the connecting tube 130 is melted. By using the heat shrinking ability of the connecting tube 130, part of the melted Pebax material penetrates into the inner wall of the first skin segment 110 and the second skin segment 120, and the first skin segment 110 and the second skin segment 120 are embedded in each other, so that the surface of the connecting tube 130 is flush with the surface of the first skin segment 110 and the surface of the second skin segment 120. Another part of the melted Pebax material also fills the gap at the joint of the first skin segment 110 and the second skin segment 120, and can also seal the gap at the joint of the first skin segment 110 and the second skin segment 120.

[0047] As shown in FIG. 3 and FIG. 4, the connecting pipe 130 is arranged at the joint of the first skin section 110 and the second skin section 120, and then the heat shrinkable pipe 150 (the melting point of the heat shrinkable pipe 150 is higher than that of the connecting pipe 130, and the heat shrinkable pipe 150 is made of FEP material for example) is sleeved on the connecting pipe 130. Then the heat shrinkable pipe 150 and the connecting pipe 130 are heated, so that the connecting pipe 130 is in a molten state. The heat shrinkable pipe 150 is shrunk by the heat shrinkage of the Pebax material and the shrinkage force applied to the connecting pipe 130 (the arrow direction in FIG. 3 shows the shrinkage direction of the connecting pipe 130 and the heat shrinkable pipe 150). After melting, part of the Pebax material penetrates into the inner wall of the first skin section 110 and the second skin section 120, and the first skin section 110 and the second skin section 120 are embedded with each other, so that the surface of the connecting pipe 130 is flush with the surface of the first skin section 110 and the surface of the second skin section 120. Another part of the Pebax material after melting also fills the gap at the joint of the first skin section 110 and the second skin section 120, and can also seal the gap at the joint of the first skin section 110 and the second skin section 120. After the connecting pipe 130 is connected with the first skin section 110 and the second skin section 120, the heat shrinkable pipe 150 can be removed.

[0048] In some embodiments, the length of the connecting pipe 130 is greater than the gap between the first skin section 110 and the second skin section 120, and the connecting pipe 130 at least partially covers the proximal end of the first skin section 110, and the connecting pipe 130 at least partially covers the distal end of the second skin section 120, as shown in FIG. 3-6. In this embodiment, the length of the connecting pipe 130 is slightly longer, which is beneficial to the reliability of the connection between the connecting pipe 130 and the first skin section 110 and the second skin section 120.

[0049] The second aspect of the embodiment is described in detail.

[0050] The active bending degree of the embodiment includes the snake bone body 140, as shown in FIG. 2, FIG. 3 and FIG. 5. For example, the snake bone body 140 includes a plurality of snake bone joints 141, and adjacent two snake bone joints 141 are riveted by a rivet 142, as shown in FIG. 2-6. Thus, under the action of the pulling force of the traction rope, the snake bone joint 141 can rotate.

[0051] Not limited to this, the snake bone body 140 can also be formed by integral cutting.

[0052] In some embodiments, the active bending section further includes a skin assembly. The skin assembly is the skin assembly of any one of the technical solutions of the embodiment. For example, the first skin section 110 in the skin assembly covers the proximal end of the snake bone body 140, and the second skin section 120 in the skin assembly covers the distal end of the snake bone body 140.

[0053] The active bending section of the embodiment has the skin assembly of any one of the technical solutions in the embodiment. When the active bending section is controlled to bend through the traction rope, the active bending section can realize the form of bending from the distal end first and the proximal end later, which is beneficial to reducing the area swept by the distal end in the bending process of the active bending section. When a doctor uses the active bending section in an operation, for example, when the doctor needs to bend the active bending section from the upper calyx to the lower calyx, the operation difficulty can be reduced, and the problem of kidney damage caused by too large swept area in the bending process of the active bending section can be avoided.

[0054] A third aspect of the embodiment is specifically explained.

[0055] The insertion part of the embodiment includes the active bending section 100, as shown in FIG. 1. The active bending section 100 is the active bending section of any one of the technical solutions in the embodiment. The insertion part of the embodiment further includes the passive bending section 200, and the distal end of the passive bending section 200 is connected with the proximal end of the active bending section 100, as shown in FIG. 1. The structure of the passive bending section 200 can be the same as that of the prior art, and will not be described here.

[0056] The insertion part of the embodiment has the active bending section of any one of the technical solutions in the embodiment. When the active bending section 100 is controlled to bend through the traction rope, the distal end of the active bending section 100 can be bent first and the proximal end can be bent later. This bending mode is beneficial to reducing the area swept by the distal end in the bending process of the active bending section 100, and can reduce the operation difficulty and the probability of tissue damage when a doctor uses the active bending section in an operation.

[0057] A fourth aspect of the embodiment is specifically explained.

[0058] The endoscope of the embodiment includes the insertion part 300, as shown in FIG. 1. The insertion part 300 is the insertion part of any one of the technical solutions in the embodiment. The endoscope of the embodiment further includes the handle 400, and the handle 400 is connected with the proximal end of the insertion part 300, as shown in FIG. 1. The handle 400 can have the structure of the prior art, and will not be described here.

[0059] The endoscope system of the embodiment can be a digestive endoscope, a bronchoscope, a renal pelviscope, an esophagoscope, a gastroscope, a colonoscope, an otoscope, a nasoscope, a mouth mirror, a laryngoscope, a vaginal mirror, a laparoscope, an arthroscope, etc. The type of the endoscope system is not specifically limited in the embodiment.

[0060] The endoscope of the embodiment has the insertion part of any one of the technical solutions in the embodiment, which can reduce the operation difficulty when a doctor uses the endoscope in an operation, and can reduce the probability of tissue damage.

[0061] The above merely provides the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A skin assembly for an actively bending section (100) of an endoscope, characterized by The skin assembly comprises at least a first skin segment (110) and a second skin segment (120), wherein the first skin segment (110) is located at the proximal end of the active bending segment (100), the second skin segment (120) is located at the distal end of the active bending segment (100), and the hardness of the first skin segment (110) is greater than the hardness of the second skin segment (120).

2. The skin assembly of claim 1, wherein, The hardness of the first skin segment (110) gradually increases from the distal end to the proximal end.

3. A skin assembly according to claim 1 or 2, characterised in that, The hardness of the second skin segment (120) gradually increases from the distal end to the proximal end, and the hardness of the proximal end of the second skin segment (120) is less than the hardness of the distal end of the first skin segment (110).

4. The skin assembly of claim 1, wherein, The thickness of the first skin segment (110) is greater than the thickness of the second skin segment (120); or The number of layers of the first skin segment (110) is greater than the number of layers of the second skin segment (120).

5. The skin assembly of claim 1, wherein, Further comprising a connecting tube (130), which is arranged at the connection between the first skin segment (110) and the second skin segment (120), and is used to fixedly connect the first skin segment (110) and the second skin segment (120).

6. The skin assembly of claim 5, wherein, The distal end of the connecting tube (130) is embedded in the proximal end of the second skin segment (120), the proximal end of the connecting tube (130) is embedded in the distal end of the first skin segment (110), and the surface of the connecting tube (130) is flush with the surface of the first skin segment (110) and the surface of the second skin segment (120).

7. The skin assembly of claim 5, wherein, The length of the connecting tube (130) is greater than the gap between the first skin segment (110) and the second skin segment (120), the connecting tube (130) at least partially covers the proximal end of the first skin segment (110), and the connecting tube (130) also at least partially covers the distal end of the second skin segment (120).

8. An actively curved section, characterized by Comprising a snake bone body (140) and a skin assembly, the skin assembly is the skin assembly of any one of claims 1 to 7, and the first skin segment (110) in the skin assembly is wrapped at the proximal end of the snake bone body (140), and the second skin segment (120) in the skin assembly is wrapped at the distal end of the snake bone body (140).

9. An insertion portion characterized by, Comprising an active bending segment (100) and a passive bending segment (200), the active bending segment (100) is the active bending segment of claim 8, and the proximal end of the active bending segment (100) is connected with the distal end of the passive bending segment (200).

10. An endoscope characterized by comprising: Comprising an insertion part (300) and a handle (400), the insertion part (300) is the insertion part of claim 9, and the proximal end of the insertion part (300) is connected with the handle (400).

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