Sealing structure, optical coupler, and endoscope system

Abstract

The utility model discloses a sealing structure, an optical coupler and an endoscope system, and relates to the technical field of medical instruments. The sealing structure comprises a mounting part and a sealing member, the mounting part is located on the inner wall of an adjusting ring of the optical coupler, the mounting part extends to the end part of the adjusting ring along the axial direction of the optical coupler, and an accommodating cavity is formed between the mounting part and a lens cone of the optical coupler; the sealing member is installed in the accommodating chamber, a first sealing part is formed between the side wall of the sealing member and the adjusting ring, and a second sealing part is formed between the end face of the sealing member and the adjusting ring and / or the lens cone. According to the sealing structure, the sealing parts can be formed in different directions of the optical coupler, and the sealing reliability of the sealing element can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field especially, relate to a sealing structure, optical coupler and endoscope system. BACKGROUND

[0002] An endoscope system is a commonly used medical instrument that can be directly inserted into a body cavity for examination to provide sufficient diagnostic information for a physician. The endoscope system includes an endoscope and a camera, the endoscope is used to be inserted into the cavity, to transmit light to the cavity and receive light from the cavity; the endoscope is also connected with the camera, the camera can capture video or image based on the light received from the cavity by the endoscope. The endoscope system further includes a camera control unit, the camera is connected with the camera control unit, the camera control unit is used to process the video or image captured by the camera, and the processed video or image is used for display or storage.

[0003] In the related art, the endoscope and the camera are connected through an optical coupler, which is used to releasably couple the endoscope to the camera. The optical coupler can include optical components for focusing light received from the endoscope onto an imaging sensor assembly in the camera. To provide this focusing function, the coupler can include one or more optical components, such as one or more lenses or prisms, which can be moved relative to the camera, the endoscope, or both, to change the focal length.

[0004] The optical coupler in the related art is usually provided with a sealing structure to prevent water vapor, dust and the like from entering the inside of the optical coupler. The optical coupler in the related art forms a groove accommodating a sealing ring on the adjusting ring or the lens barrel, and separates the inside of the optical coupler and the outside through the sealing ring. However, the inventors have found that the optical coupler in the related art is prone to sealing failure when the adjusting ring is rotated. Therefore, it is a technical problem to be solved by those skilled in the art to provide an optical coupler with good sealing performance. SUMMARY

[0005] The utility model discloses a sealing structure, optical coupler and endoscope system to solve the technical problem that the optical coupler in the related art has sealing hidden danger.

[0006] In order to solve the above problems, the utility model adopts the following technical scheme:

[0007] The first aspect of the utility model provides a sealing structure.

[0008] The utility model discloses a sealing structure for an optical coupler, which comprises a mounting portion and a sealing member. The mounting portion is located on the inner wall of an adjusting ring of the optical coupler and extends to the end of the adjusting ring along the axial direction of the optical coupler, so that a containing cavity is formed between the mounting portion and the lens barrel of the optical coupler. The sealing member is installed in the containing cavity and forms a first sealing portion between the side wall of the sealing member and the adjusting ring, and a second sealing portion between the end face of the sealing member and the adjusting ring and / or the lens barrel.

[0009] The utility model discloses a third aspect of the utility model provides an optical coupler.

[0010] The utility model discloses an optical coupler, which comprises an adjusting ring, a lens barrel, an optical assembly and a clamp assembly. The optical assembly and the clamp assembly are installed on the lens barrel. The adjusting ring is rotatably arranged on the lens barrel. A sealing structure is arranged between the adjusting ring and the lens barrel. The sealing structure is the sealing structure described in any of the technical solutions of the utility model.

[0011] The utility model discloses a third aspect of the utility model provides an endoscope system.

[0012] The utility model discloses an endoscope system, which comprises an endoscope, a camera and an optical coupler. The optical coupler is the optical coupler described in any of the technical solutions of the utility model. The optical coupler is used to detachably couple the endoscope to the camera.

[0013] The technical solution of the utility model can achieve the following beneficial effects:

[0014] The mounting portion of the sealing structure extends to the end of the adjusting ring along the axial direction of the optical coupler. That is, the inner wall and the end face of the mounting portion are open structures. Therefore, the side wall of the sealing member and the adjusting ring form a first sealing portion, and the end face of the sealing member and the adjusting ring and / or the lens barrel form a second sealing portion. That is, the sealing member of the utility model can form sealing portions in different directions of the optical coupler, thereby improving the sealing reliability of the sealing member. It can be seen that the sealing structure of the utility model solves the technical problem of the optical coupler in the related art, which has a sealing risk.

[0015] On the other hand, the mounting portion of the sealing structure has an open structure on the inner wall and the end face of the adjusting ring. After the adjusting ring is initially installed on the sealing member, the first sealing portion and the second sealing portion can be formed by moving and pressing the sealing member along the axial direction of the lens barrel. It can be seen that the structure of the mounting portion not only facilitates the formation of the first sealing portion and the second sealing portion, but also has the advantages of convenient installation of the sealing member and the adjusting ring. BRIEF DESCRIPTION OF DRAWINGS

[0016] 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 embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0017] Figure 1 is a schematic view of the eyepiece cover of the endoscope engaged with the optical coupler of the embodiment of the present application;

[0018] Figure 2 is a schematic view of the optical coupler of the embodiment of the present application;

[0019] Figure 3 is a first partial schematic view of the optical coupler of the embodiment of the present application;

[0020] Figure 4 is a second partial schematic view of the optical coupler of the embodiment of the present application;

[0021] Figure 5 is a schematic view of the sealing structure of the first embodiment of the present application;

[0022] Figure 6 is a schematic view of the sealing structure of the second embodiment of the present application;

[0023] Figure 7 is a schematic view of the sealing structure of the third embodiment of the present application;

[0024] Figure 8 is Figure 7 is an enlarged view of part A in FIG. 8;

[0025] Figure 9 is a partial schematic view of the first adjusting ring of the embodiment of the present application;

[0026] Figure 10 is a schematic view of the sealing member of the embodiment of the present application.

[0027] In the drawings: 100, sealing structure; 110, mounting portion; 111, first wall surface; 112, second wall surface; 120, sealing member; 121, recessed portion; 122, protruding portion; 130, first sealing portion; 140, second sealing portion; 150, first gasket; 160, second gasket; 200, adjusting ring; 210, first adjusting ring; 220, second adjusting ring; 300, lens barrel; 310, convex plate; 400, optical assembly; 500, clamp assembly; 600, eyepiece cover. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the utility model clearer, the technical scheme of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope protected by the utility model.

[0029] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, not to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally a kind, not limited to the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / ", generally indicates that the front and rear associated objects are in an "or" relationship.

[0030] In the embodiments of the present application, "proximal end" and "distal end" refer to the relative position of each component to the user in the use environment, wherein the end closer to the user is designated as "proximal end" and the end farther away from the user is designated as "distal end".

[0031] In the related art, the optical coupler forms a groove on the adjusting ring or the lens barrel, and the sealing ring is installed in the groove. However, in order to facilitate the installation of the sealing ring, the width of the groove is usually greater than the width of the sealing ring in the axial direction of the optical coupler. After the adjusting ring is matched with the lens barrel, a sealing part is formed between the side wall of the sealing ring and the adjusting ring, which plays a sealing effect. When the adjusting ring is rotated, the adjusting ring repeatedly extrudes and rubs against the sealing ring, which is prone to cause the sealing performance of the sealing ring to decline. The sealing structure of the utility model can form a sealing part in different directions of the optical coupler, which can improve the sealing reliability of the sealing member compared to the sealing ring in the related art which only forms a sealing part in a single direction.

[0032] The sealing structure, optical coupler and endoscope system provided by the present application will be described in detail below in combination with the accompanying drawings Figures 1 to 10

[0033] The first aspect of the present embodiment describes the sealing structure in detail.

[0034] ​The sealing structure of the embodiment is used in an optical coupler. The optical coupler is a device connecting an endoscope and a camera, and is used to realize signal transmission between the endoscope and the camera. Specifically, the distal end of the endoscope is used to be inserted into a cavity to be detected, and the proximal end of the endoscope is connected to the camera through the optical coupler.

[0035] For example, the optical coupler includes an adjusting ring 200, a lens barrel 300, an optical assembly 400, and a clamp assembly 500, as shown in Figures 1-3 The optical assembly 400 and the clamp assembly 500 are installed on the lens barrel 300, and the adjusting ring 200 is rotatably arranged on the lens barrel 300, as shown in Figures 1-3 .

[0036] For example, the optical assembly 400 includes a plurality of lenses, as shown in Figure 3 The position of each lens in the lens barrel 300 can be adjusted by rotating the adjusting ring 200. For example, the adjusting ring 200 includes a focusing ring and a focusing ring, and the imaging clarity can be adjusted by cooperation of the two. Specifically, the structure of the adjusting ring 200 for adjusting the lenses in the lens barrel 300 is a prior art, which will not be described here.

[0037] For example, the clamp assembly 500 is located at the distal end of the lens barrel 300, and the clamp assembly 500 can be used to clamp an ocular cover 600 at the proximal end of the endoscope, so that the ocular cover 600 can be clamped on the optical coupler or detached, thereby realizing coupling or separation of the endoscope and the camera. Figure 1 A schematic view of the clamp assembly 500 clamping the ocular cover 600 is shown. The structure of the clamp assembly 500 is a prior art, which will not be described here.

[0038] In some embodiments, the sealing structure includes a mounting portion 110, as shown in Figure 3 and Figure 4 . For example, the mounting portion 110 is located on the inner wall of the adjusting ring 200. In the axial direction of the optical coupler, the mounting portion 110 extends to the end of the adjusting ring 200, and a containing chamber is formed between the mounting portion 110 and the lens barrel 300, as shown in Figure 3 and Figure 4 . As shown in Figure 9 , a groove structure is arranged on the inner wall of the adjusting ring 200, and the groove structure forms the mounting portion 110. The containing chamber is formed between the mounting portion 110 and the lens barrel 300.

[0039] In some embodiments, the sealing structure further includes a sealing member 120, as shown in Figures 5-7The sealing member 120 is installed in the accommodating chamber, and a side wall of the sealing member 120 is in contact with the adjusting ring 200 to form a first sealing portion 130, and an end surface of the sealing member 120 is in contact with the adjusting ring 200 and / or the lens barrel 300 to form a second sealing portion 140, as shown in Figures 5-8 .

[0040] The first sealing portion 130 formed between the side wall of the sealing member 120 and the adjusting ring 200 can be that the side wall of the sealing member 120 is directly in contact with the adjusting ring 200 to form the first sealing portion 130, as shown in Figures 5-8 . The second sealing portion 140 formed between the end surface of the sealing member 120 and the adjusting ring 200 and / or the lens barrel 300 can be that the end surface of the sealing member 120 is directly in contact with the adjusting ring 200 and / or the lens barrel 300 to form the second sealing portion 140, as shown in Figure 5 and Figure 7 ; or that the end surface of the sealing member 120 is indirectly in contact with the adjusting ring 200 and / or the lens barrel 300 to form the second sealing portion 140, as shown in Figure 6 .

[0041] As shown in Figure 9 , the inner wall of the adjusting ring 200 is partially recessed to form a groove structure. The groove structure has a first wall surface 111 and a second wall surface 112. The side wall of the sealing member 120 is in abutment with the first wall surface 111 to form the first sealing portion 130, and the end surface of the sealing member 120 is in abutment with the second wall surface 112 to form the second sealing portion 140, as shown in Figure 8 and Figure 9 . Continuing to refer to Figure 3 , Figure 4 , Figure 7 and Figure 8 , the lens barrel 300 is further provided with a convex plate 310. The other end surface of the sealing member 120 can also be in abutment with the convex plate 310 to form the second sealing portion 140.

[0042] In the sealing structure of the embodiment, the mounting portion 110 extends to the end of the adjusting ring 200 along the axial direction of the optical coupler, that is, the mounting portion 110 is in an open structure at both the inner wall and the end surface of the adjusting ring 200, so that the side wall of the sealing member 120 is in abutment with the adjusting ring 200 to form the first sealing portion 130, and the end surface of the sealing member 120 is in abutment with the adjusting ring 200 and / or the lens barrel 300 to form the second sealing portion 140, that is, the sealing member 120 of the embodiment can form the sealing portion in different directions of the optical coupler, thereby improving the sealing reliability of the sealing member 120. It can be seen that the sealing structure of the embodiment solves the technical problem of the optical coupler in the related art that has a sealing risk.

[0043] On the other hand, in the sealing structure of this embodiment, the mounting part 110 has an open structure on both the inner wall and end face of the adjusting ring 200. After the adjusting ring 200 is initially installed on the sealing member 120, the first sealing part 130 and the second sealing part 140 can be formed by moving the sealing member 120 along the axial direction of the lens barrel 300 and pressing it. It can be seen that the structure of the mounting part 110 not only facilitates the formation of the first sealing part 130 and the second sealing part 140, but also has the advantage of convenient installation of the sealing member 120 and the adjusting ring 200.

[0044] In some embodiments, the sidewall of the seal 120 is provided with at least one recess 121, and the two sides of the recess 121 are formed as protrusions 122, such as... Figure 10 As shown. The outer diameter of the seal 120 at the protrusion 122 is greater than or equal to the inner diameter of the adjusting ring 200 at the mounting portion 110, and at least two first sealing portions 130 are formed between the seal 120 and the adjusting ring 200, as shown. Figure 8 As shown. Specifically, after the adjusting ring 200 is installed, a first sealing portion 130 is formed between the inner wall of the adjusting ring 200 and the protrusion 122.

[0045] like Figure 10 As shown, when the sidewall of the seal 120 has two protrusions 122, two first sealing portions 130 are formed between the seal 120 and the inner wall of the adjusting ring 200. It is understood that when the sidewall of the seal 120 has three protrusions 122, three first sealing portions 130 are formed between the seal 120 and the inner wall of the adjusting ring 200. For example, the sidewall of the seal 120 has 2 to 5 protrusions 122.

[0046] In this embodiment, the sealing structure has a recessed portion 121 on the side wall of the sealing member 120, and protrusions 122 are formed on both sides of the recessed portion 121. This structure not only increases the number of first sealing portions 130, but also reduces the pressure of any liquid flow (such as liquid during sterilization) entering the position through the recessed portion 121, resulting in a lower liquid pressure at the sealing member 120 and reducing the risk of liquid seeping into the optical coupler.

[0047] In some embodiments, the mounting portion 110 is located at both ends of the adjusting ring 200, such as... Figures 3-7 As shown. The mounting portion 110 at the distal end extends along the axial direction of the optical coupler to the distal end face of the adjusting ring 200; the mounting portion 110 at the proximal end extends along the axial direction of the optical coupler to the proximal end face of the adjusting ring 200. Mounting portions 110 are provided at both ends of the adjusting ring 200, so that seals 120 can be installed at both ends of the adjusting ring 200, further improving the sealing performance of the optical coupler.

[0048] In some embodiments, the sealing structure further includes a first gasket 150, such asFigure 5 The outer diameter of the first gasket 150 is greater than the outer diameter of the seal 120. The first gasket 150 is located at the end of the adjustment ring 200, and the first gasket 150 is in contact with the end face of the adjustment ring 200, as shown in Figure 5 For example, the first gasket 150 is a damping gasket. The damping gasket is, for example, a silica gel gasket.

[0049] The sealing structure of the embodiment further comprises the first gasket 150, which is in contact with the end face of the adjustment ring 200, so that a sealing part can also be formed between the first gasket 150 and the adjustment ring 200, and the sealing performance of the sealing structure can be further enhanced.

[0050] On the other hand, the inventor found in research that the adjustment ring 200 can be rotated using a smaller force, which is not conducive to the accurate adjustment of the positions of the lenses of the optical assembly 400. The sealing structure of the embodiment further comprises the first gasket 150, which can increase the rotation resistance of the adjustment ring 200 by being in contact with the adjustment ring 200, so that the rotation resistance of the adjustment ring 200 is moderate, which is conducive to the accurate adjustment of the positions of the lenses of the optical assembly 400 and also meets the use feeling of the operator.

[0051] In some embodiments, the adjustment ring 200 comprises a first adjustment ring 210 and a second adjustment ring 220, as shown in Figures 1-7 For example, the first adjustment ring 210 is one of a focusing ring and a focusing ring, and the second adjustment ring 220 is the other of the focusing ring and the focusing ring. The two end faces of the first gasket 150 located between the first adjustment ring 210 and the second adjustment ring 220 are respectively in abutment with the first adjustment ring 210 and the second adjustment ring 220, as shown in Figure 5 The first gasket 150 located between the first adjustment ring 210 and the second adjustment ring 220 can be used by the first adjustment ring 210 and the second adjustment ring 220 at the same time, so that the structure layout of the optical coupler is compact.

[0052] In some embodiments, the sealing structure further comprises a second gasket 160, as shown in Figure 7 and Figure 8 For example, the second gasket 160 is a silica gel gasket. The second gasket 160 is located between the seal 120 and the first gasket 150, and the second gasket 160 is in abutment with at least one of the adjustment ring 200, the seal 120, and the first gasket 150. Figure 7 and Figure 8 The second gasket 160 is shown in abutment with the inner wall of the adjustment ring 200, and the end face of the second gasket 160 is in abutment with the end face of the first gasket 150.

[0053] The side wall of the second gasket 160 abuts against at least one of the adjusting ring 200, the sealing member 120 and the first gasket 150, so that a sealing part can also be formed between the second gasket 160 and at least one of the adjusting ring 200, the sealing member 120 and the first gasket 150, which can further improve the sealing performance of the sealing structure.

[0054] In some embodiments, the sealing structure can also not include the first gasket 150, but only have the second gasket 160, as shown in Figure 6 For example, the sealing structure also includes the second gasket 160. For example, the second gasket 160 is a silica gel gasket. The second gasket 160 is located at least on one side of the sealing member 120, and the second gasket 160 abuts against the adjusting ring 200 and / or the sealing member 120, as shown in Figure 6 . Figure 6 A schematic view of the second gasket 160 located on both sides of the sealing member 120 is shown.

[0055] The second gasket 160 of the sealing structure of the present embodiment abuts against the adjusting ring 200 and / or the sealing member 120, so that a sealing part can also be formed between the second gasket 160 and the adjusting ring 200 and / or the sealing member 120, which can also further improve the sealing performance of the sealing structure.

[0056] In some embodiments, the second gasket 160 can be located inside the mounting portion 110, as shown in Figure 6 and Figure 7 . The second gasket 160 can also be located outside the mounting portion 110.

[0057] A second aspect of the present embodiment is described in detail.

[0058] The optical coupler of the present embodiment includes the adjusting ring 200, the lens barrel 300, the optical assembly 400 and the clamp assembly 500, the optical assembly 400 and the clamp assembly 500 are mounted on the lens barrel 300, and the adjusting ring 200 is rotatably arranged on the lens barrel 300, as shown in Figures 1-3 . The sealing structure 100 is arranged between the adjusting ring 200 and the lens barrel 300, and the sealing structure 100 is any one of the technical solutions of the first aspect of the present embodiment, as shown in Figures 3-7 . The structures of the optical assembly 400 and the clamp assembly 500 can be the same as those of the prior art, and will not be described here.

[0059] The optical coupler of the present embodiment has the sealing structure of any one of the technical solutions of the present embodiment, so that the sealing performance of the optical coupler can be improved.

[0060] A third aspect of the present embodiment is described in detail.

[0061] The endoscope system of the embodiment comprises an endoscope, a camera and an optical coupler, the optical coupler being used for detachably coupling the endoscope to the camera. The optical coupler is the optical coupler of any one of the second aspects of the embodiment. The structure of the endoscope and the camera can be the same as the prior art, which will not be described here. For example, the endoscope is a rigid endoscope, and the optical coupler is used for clamping the ocular cover 600 of the endoscope, so as to couple the endoscope to the camera.

[0062] The endoscope system of the embodiment has the optical coupler of any one of the embodiments, so that the sealing performance of the endoscope system of the embodiment is improved.

[0063] It should be noted that in this document, the terms "comprise", "comprising", or any other variant thereof are intended to cover non-exclusive inclusions, so that a process, method, article or apparatus that comprises a list of elements does not only include those elements, but also includes other elements not explicitly listed, or further includes elements inherent in such a process, method, article or apparatus. Without more limitations, the element defined by the statement "comprises a" does not exclude the presence of additional identical elements in the process, method, article or apparatus that includes the element.

[0064] In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but can also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method can be performed in an order different from that described, and various steps can also be added, omitted or combined. In addition, the features described with reference to some examples can be combined in other examples.

[0065] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto, and any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A seal structure for an optical coupler, comprising: The sealing structure comprises a mounting portion (110) and a sealing member (120), wherein the mounting portion (110) is located on the inner wall of the adjusting ring (200) of the optical coupler, and extends to the end of the adjusting ring (200) along the axial direction of the optical coupler, so as to form a containing cavity between the mounting portion (110) and the lens barrel (300) of the optical coupler; The sealing member (120) is installed in the containing cavity, and a first sealing portion (130) is formed between the side wall of the sealing member (120) and the adjusting ring (200), and a second sealing portion (140) is formed between the end face of the sealing member (120) and the adjusting ring (200) and / or the lens barrel (300).

2. The seal structure of claim 1, wherein The inner wall of the adjusting ring (200) is provided with a groove structure, and the groove structure forms the mounting portion (110).

3. The seal structure of claim 1, wherein The side wall of the sealing member (120) is provided with at least one recessed portion (121), and the two sides of the recessed portion (121) form protruding portions (122), and the outer diameter of the sealing member (120) at the protruding portions (122) is greater than or equal to the inner diameter of the adjusting ring (200) at the mounting portion (110), so that the sealing member (120) and the adjusting ring (200) have at least two first sealing portions (130).

4. The seal structure according to any one of claims 1 to 3, characterized in that, The mounting portion (110) is located at both ends of the adjusting ring (200).

5. The seal structure of claim 4, wherein Further comprising a first gasket (150), the outer diameter of the first gasket (150) is greater than the outer diameter of the sealing member (120), the first gasket (150) is located at the end of the adjusting ring (200), and the first gasket (150) is in contact with the end face of the adjusting ring (200).

6. The seal structure of claim 5, wherein The adjusting ring (200) comprises a first adjusting ring (210) and a second adjusting ring (220), and the two end faces of the first gasket (150) located between the first adjusting ring (210) and the second adjusting ring (220) are respectively in abutment with the first adjusting ring (210) and the second adjusting ring (220).

7. The seal structure of claim 5, wherein Further comprising a second gasket (160), the second gasket (160) is located between the sealing member (120) and the first gasket (150), and the second gasket (160) is in abutment with at least one of the adjusting ring (200), the sealing member (120) and the first gasket (150).

8. The sealed structure of claim 4, wherein, Further comprising a second gasket (160), the second gasket (160) is located at least on one side of the sealing member (120), and the second gasket (160) is in abutment with the adjusting ring (200) and / or the sealing member (120). Further comprising a second gasket (160), the second gasket (160) is located at least on one side of the sealing member (120), and the second gasket (160) is in abutment with the adjusting ring (200) and / or the sealing member (120).

9. An optical coupler, characterized by, The adjusting ring (200), the lens barrel (300), the optical assembly (400) and the clamp assembly (500) are included, the optical assembly (400) and the clamp assembly (500) are installed on the lens barrel (300), the adjusting ring (200) is rotatably arranged on the lens barrel (300), and a sealing structure (100) is further arranged between the adjusting ring (200) and the lens barrel (300), and the sealing structure (100) is the sealing structure in any one of claims 1 to 8.

10. An endoscope system characterized by comprising: The endoscope, the camera and the optical coupler are included, and the optical coupler is the optical coupler in claim 9, and the optical coupler is used for detachably coupling the endoscope on the camera.

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