External amplification mechanism for camera assembly of endoscope and endoscope

Abstract

The utility model discloses an external amplification mechanism for a camera assembly of an endoscope and the endoscope, the camera assembly is arranged inside the tip part of the endoscope, and the external amplification mechanism is characterized in that the external amplification mechanism is arranged outside the tip part of the endoscope; the external amplification mechanism comprises a lens assembly outer frame and a lens assembly, the lens assembly outer frame is detachably connected with the tip part of the endoscope, and the lens assembly is connected with the lens assembly outer frame; the lens assembly is configured to be used in cooperation with the camera module and used for amplifying a target object collected by the camera module, and when the lens assembly is in a working state, the lens assembly is overlapped with the camera module on the far end face of the tip part of the endoscope, so that the camera assembly collects an amplified image; when the lens assembly is in a non-working state, the lens assembly is separated from the camera module on the far end face of the front end portion of the endoscope, the camera module collects common images, and the external amplification mechanism can achieve fixed-focus optical amplification times and has the advantages of being clear and stable in picture, convenient and fast to operate, easy to machine, reliable and durable.

Description

Technical Field

[0001] This application relates to the technical field of medical device equipment, and particularly to an external magnification mechanism for an endoscope and an endoscope. Background Art

[0002] In the field of medical devices, an endoscope is a common diagnostic and therapeutic device. It enables a doctor to directly observe the internal conditions of a patient by inserting a slender tube into the patient's body, thus facilitating observation, diagnosis, and treatment. Among them, an electronic gastrointestinal endoscope is a special type of endoscope mainly used for examining the gastrointestinal tract of a patient. The front end of the insertion part of the electronic gastrointestinal endoscope is equipped with a camera module to capture images of the patient's internal body. The endoscope is connected to a host computer, which provides illumination, water and gas, signal processing, and transmission, and then displays the images on a monitor for the doctor to observe and diagnose. During use, local magnification is required for observation according to clinical needs, so as to perform accurate observation, diagnosis, and treatment.

[0003] Currently, when the existing electronic gastrointestinal endoscope performs local magnification observation, the pixels become lower after magnification, which results in unclear details of the observed part and affects the doctor's observation and diagnosis. Secondly, the observed object is in close contact with the end face of the distal end of the endoscope, and the camera module and the end face of the distal end are on the same plane, that is, when the endoscope is operating, the camera module directly contacts the observed part, and the field of view of the endoscope will still completely disappear, which brings certain difficulties to the doctor's operation.

[0004] Therefore, there is an urgent need in this field to develop an external magnification mechanism for an endoscope. This external magnification mechanism can achieve a fixed-focus optical magnification multiple, has the advantages of clear and stable images, convenient operation, simple processing, reliable and durable performance, and at the same time keeps a certain distance between the camera module and the observed part, which can avoid the complete disappearance of the field of view. Summary of the Invention

[0005] The purpose of this application is to provide an external magnification mechanism for an endoscope. This external magnification mechanism can achieve a fixed-focus optical magnification multiple, has the advantages of clear and stable images, convenient operation, simple processing, reliable and durable performance, and at the same time keeps a certain distance between the camera module and the observed part, which can avoid the complete disappearance of the field of view.

[0006] This application provides an external magnification mechanism for a camera assembly of an endoscope. The endoscope includes an endoscope distal end portion, the camera assembly includes an endoscope camera module, and the camera assembly is disposed inside the endoscope distal end portion. It is characterized in that the external magnification mechanism is disposed outside the endoscope distal end portion;

[0007] The external magnification mechanism includes: a lens assembly outer frame and a lens assembly. The lens assembly outer frame is detachably connected to the distal end of the endoscope, and the lens assembly is connected to the lens assembly outer frame.

[0008] The lens assembly is configured to cooperate with the endoscope imaging module to magnify the target object collected by the endoscope imaging module. When the lens assembly is in the working state, the lens assembly overlaps with the endoscope imaging module on the distal end face of the endoscope distal end, so that the camera assembly captures a magnified image.

[0009] When the lens assembly is in the non-working state, the lens assembly is separated from the endoscope imaging module on the distal end face of the endoscope distal end, and the camera assembly captures a normal image.

[0010] In another preferred example, the distal end of the endoscope includes an end cap, and the lens assembly outer frame is detachably connected to the end cap by a snap connection.

[0011] In another preferred example, the lens assembly outer frame is a cylindrical structure adapted to the distal end of the endoscope.

[0012] In another preferred example, the lens assembly is rotatably connected to the lens assembly outer frame, and the lens assembly can move relative to the lens assembly outer frame on the distal end face of the endoscope distal end.

[0013] In another preferred example, a limiting structure is provided on the lens assembly outer frame, and the limiting structure is used to define the movement trajectory of the lens assembly on the distal end face of the endoscope distal end.

[0014] In another preferred example, the limiting structure is integral with the lens assembly outer frame.

[0015] In another preferred example, the lens assembly includes a convex lens and a lens inner frame, and the lens inner frame is rotatably connected to the limiting structure on the lens assembly outer frame.

[0016] In another preferred example, the lens inner frame includes a main body portion and a connecting portion protruding outward from the main body portion. The main body portion is used to accommodate the convex lens, and the connecting portion is rotatably connected to the limiting structure through a first connecting member.

[0017] In another preferred example, the first connecting member includes a pin shaft.

[0018] In another preferred example, the main body portion is cylindrical in shape.

[0019] In another preferred example, the limiting structure includes an arc surface, and the main body of the inner lens frame moves along the arc surface.

[0020] In another preferred example, the external magnification mechanism further includes a traction member, the traction member is connected to the connecting portion, and the traction member is used to traction the lens assembly to move on the distal end surface of the distal end of the endoscope.

[0021] In another preferred example, the connecting portion is provided with a traction shaft, the traction member is connected to the traction shaft of the connecting portion, and passes through the outer frame of the lens assembly.

[0022] In another preferred example, the traction member is fixedly connected to the connecting portion

[0023] In another preferred example, the traction member is composed of 2 steel wire ropes.

[0024] In another preferred example, the traction member passes through the outer frame of the lens assembly.

[0025] In another preferred example, the traction shaft is a hollow structure, and a mating connection hole is provided on the limiting structure. When the inner lens frame is rotatably connected to the outer frame of the lens assembly, the first connecting member passes through the traction shaft and the mating connection hole.

[0026] In another preferred example, the traction shaft has a structure of a cylindrical hole.

[0027] The present application also provides an endoscope, the endoscope includes a camera assembly, and the endoscope further includes the above-mentioned external magnification mechanism for the camera assembly of the endoscope.

[0028] It should be understood that within the scope of the present invention, the above-mentioned technical features of the present invention and the technical features specifically described below (such as in the embodiments) can be combined with each other to form new or preferred technical solutions. Due to space limitations, they will not be repeated one by one here.

[0029] The specification of the present application records a large number of technical features, which are distributed in various technical solutions. If all possible combinations of technical features (i.e., technical solutions) of the present application are listed, the specification will be too long. To avoid this problem, each technical feature disclosed in the above-mentioned invention content of the present application, each technical feature disclosed in the following embodiments and examples, and each technical feature disclosed in the drawings can be freely combined with each other to form various new technical solutions (these technical solutions are all regarded as having been recorded in this specification), unless the combination of such technical features is technically infeasible. For example, in one example, features A+B+C are disclosed, and in another example, features A+B+D+E are disclosed. Features C and D are equivalent technical means that perform the same function, and only one of them can be used technically and it is impossible to use both at the same time. Feature E can be combined with feature C technically. Then, the solution of A+B+C+D should not be regarded as having been recorded because it is technically infeasible, while the solution of A+B+C+E should be regarded as having been recorded. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. It should be understood that the drawings in the following description are only some embodiments of the present invention, and those of ordinary skill in the art can also obtain other embodiments based on these drawings without creative efforts.

[0031] Figure 1 FIG. is a schematic structural diagram of an outer frame of a lens assembly of an external magnification mechanism of a camera assembly for an endoscope according to an embodiment of the present application;

[0032] Figure 2 FIG. is a schematic structural diagram of a lens assembly of an external magnification mechanism of a camera assembly for an endoscope according to an embodiment of the present application;

[0033] Figure 3 FIG. is a schematic structural diagram of an external magnification mechanism of a camera assembly for an endoscope according to an embodiment of the present application in a non-working state (i.e., a state where the lens magnification function is not used);

[0034] Figure 4 FIG. is a schematic structural diagram of an external magnification mechanism of a camera assembly for an endoscope according to an embodiment of the present application in a working state (i.e., a state where the lens magnification function is used);

[0035] Figure 5 FIG. is a schematic structural diagram of an external magnification mechanism installed at the distal end of an endoscope according to an embodiment of the present application;

[0036] Figure 6is a cross-sectional view of an external magnification mechanism according to an embodiment of the present application;

[0037] Figure 7 and Figure 8 are schematic structural diagrams of two motion states of the external magnification mechanism according to an embodiment of the present application moving on the distal surface of the distal end portion 2 of the endoscope;

[0038] Figure 9 is a schematic cross-sectional structural diagram of an external magnification mechanism according to an embodiment of the present application installed and connected to the endoscope tip of the endoscope.

[0039] In each of the drawings, the markings are as follows

[0040] 1 - Endoscope external magnification mechanism

[0041] 11 - Outer frame of the lens assembly

[0042] 111 - Limiting structure

[0043] 111a - Fitting connection hole

[0044] 12 - Lens assembly

[0045] 121 - Convex lens

[0046] 122 - Inner frame of the lens

[0047] 1221 - Main body portion

[0048] 1222 - Connection portion

[0049] 1222a - Traction shaft

[0050] 13 - Spacer

[0051] 14 - Traction member

[0052] 15 - Pin shaft

[0053] 2 - Endoscope tip

[0054] 21 - Endoscope camera module

[0055] 22 - Nozzle assembly

[0056] 23 - Illumination lens light guide group

[0057] 24 - Biopsy forceps channel

[0058] 25 - End cap Detailed implementation manners

[0059] Through extensive and in-depth research, the inventor has developed for the first time an external magnification mechanism for a camera assembly of an endoscope. Through an ingenious structure, it is detachably connected to the distal end of the endoscope. During the use of the endoscope (such as an electronic gastrointestinal endoscope), this mechanism can keep the distance between the lens and the object being observed in a constant state, avoid the complete disappearance of the field of view, and at the same time achieve a fixed-focus optical magnification function, and can clearly present the observed part. This mechanism adopts a fixed-focus magnification scheme, designs lens devices with magnifications of 10, 20, and 30 times. When magnification observation is needed, the lens device rotates around the axis and moves to the front end of the imaging module to achieve the magnification effect. When not in use, the lens device rotates and moves away from the front end of the imaging module. This structure can perform magnification observation when needed, does not affect normal observation and operation, and at the same time ensures high-definition imaging quality and diagnostic effects.

[0060] In the following description, many technical details are presented to help readers better understand the present application. However, those of ordinary skill in the art can understand that even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in the present application can still be implemented.

[0061] An external magnification mechanism for a camera assembly of an endoscope

[0062] The endoscope includes an endoscope distal end 2, the camera assembly includes an endoscope imaging module 21, the camera assembly is disposed inside the endoscope distal end 2, and is characterized in that the external magnification mechanism is disposed outside the endoscope distal end 2;

[0063] The external magnification mechanism 1 includes: a lens assembly outer frame 11 and a lens assembly 12. The lens assembly outer frame 11 is detachably connected to the endoscope distal end 2, and the lens assembly 12 is connected to the lens assembly outer frame 11;

[0064] The lens assembly 12 is configured to cooperate with the endoscope imaging module 21 to magnify the target object collected by the endoscope imaging module 21. When the lens assembly 12 is in the working state, the lens assembly 12 overlaps with the endoscope imaging module 21 on the distal end face of the endoscope distal end 2, so that the camera assembly collects a magnified image;

[0065] When the lens assembly 12 is in the non-working state, the lens assembly 12 is separated from the endoscope imaging module 21 on the distal end face of the endoscope distal end 2, and the camera assembly collects a normal image.

[0066] An endoscope

[0067] The endoscope includes a camera assembly, and the endoscope further includes an external magnification mechanism for the camera assembly of the endoscope as described above.

[0068] The term

[0069] As used herein, "distal end" refers to the end away from the operating site where the medical staff operates;

[0070] It should be noted that in the application documents of this patent, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one" does not exclude the presence of additional identical elements in the process, method, article or device including the element. In the application documents of this patent, if it is mentioned that a certain act is performed according to a certain element, it means at least performing the act according to the element, including two cases: only performing the act according to the element, and performing the act according to the element and other elements. Expressions such as multiple, multiple times, multiple types include 2, 2 times, 2 types, and more than 2, more than 2 times, more than 2 types.

[0071] In the present invention, all directional indications (such as up, down, left, right, front, back, etc.) are only used to explain the relative positional relationship, movement conditions, etc. between components in a certain specific posture (as shown in the drawings). If this specific posture changes, the directional indications will also change accordingly.

[0072] This application has at least one of the following advantages

[0073] (a) The external magnification mechanism for the camera assembly of the endoscope in this application is an external optical magnification mechanism for the head end of the endoscope body, which is clamped at the distal end of the endoscope. This mechanism can keep the distance between the lens and the observation object in a constant state, avoid the complete disappearance of the field of view, and achieve the fixed-focus optical magnification function at the same time, and can clearly present the observed part;

[0074] (b) The external magnification mechanism for the camera assembly of the endoscope in this application rotatably connects the lens assembly to the outer frame of the lens assembly. The lens assembly has a working state and a non-working state through rotation, so that magnification can be achieved when there is a need, and the image is not magnified when there is no need for a magnified image;

[0075] (c) The external magnification mechanism of the camera assembly for an endoscope in this application is provided with a limiting mechanism on the outer frame of the lens assembly. This structure can perform magnified observation when needed without affecting normal observation and operation, that is, the lens assembly will not cause interference or touch with other components of the camera assembly during rotation, ensuring high-definition imaging quality and diagnostic effect.

[0076] (d) The external magnification mechanism of the camera assembly for an endoscope in this application realizes a fixed-focus magnification scheme by means of external optical elements and the position of the object to be observed in contact with the end face of the outer frame of the lens assembly. Moreover, lens devices with magnifications of 10, 20, and 30 times are designed. When magnified observation is required, the rotation axis of the lens device rotates and moves to the front end of the imaging module to achieve the magnification effect. When not in use, the lens device rotates and moves away from the front end of the imaging module.

[0077] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that these are only some examples that the reader can adopt for the present invention, but are not intended to limit the scope of the present invention.

[0078] See Figures 1-9 , the present utility model provides an external magnification mechanism for a camera assembly of an endoscope. The endoscope includes an endoscope tip 2, and the camera assembly includes an endoscope imaging module 21. The camera assembly is disposed inside the endoscope tip 2. It is characterized in that the external magnification mechanism is disposed outside the endoscope tip 2.

[0079] The external magnification mechanism 1 includes: an outer frame 11 of the lens assembly, and a lens assembly 12. The outer frame 11 of the lens assembly is detachably connected to the endoscope tip 2, and the lens assembly 12 is connected to the outer frame 11 of the lens assembly. The lens assembly 12 is configured to cooperate with the endoscope imaging module 21 for magnifying the target object collected by the endoscope imaging module 21. When the lens assembly 12 is in the working state, the lens assembly 12 overlaps with the endoscope imaging module 21 on the distal end face of the endoscope tip 2, so that the camera assembly collects a magnified image. When the lens assembly 12 is in the non-working state, the lens assembly 12 is separated from the endoscope imaging module 21 on the distal end face of the endoscope tip 2, and the camera assembly collects a normal image.

[0080] As Figure 3 shown, in the state where the external magnification function of the endoscope is not used (i.e., the non-working state), for the endoscope imaging module 21, the position of the lens assembly 12 is outside the imaging module 21; as Figure 4 shown, in the state where the external magnification function of the endoscope is used (i.e., the working state), the lens assembly 12 moves to coincide with the front end of the imaging module 21; as Figure 5As shown, optionally, the external magnification mechanism 1 is installed on the distal end portion 2 of the endoscope, and a snap - locking method is adopted. Among them Figure 3 The distal end portion 2 of the endoscope, the imaging module 21, the nozzle assembly 22, which has the functions of air supply and water supply for flushing the imaging module 21, the illumination lens light - guiding group 23, which provides illumination for the endoscope, and the biopsy forceps channel hole 24 are shown.

[0081] Figure 1 It is a schematic structural diagram of the outer frame of the lens assembly of the external magnification mechanism for the camera assembly of the endoscope according to an embodiment of the present application. Figure 2 It is a schematic structural diagram of the lens assembly of the external magnification mechanism for the camera assembly of the endoscope according to an embodiment of the present application. Figure 6 A cross - sectional view of the external magnification mechanism according to an embodiment of the present application is shown. Figure 9 It is a schematic cross - sectional structural diagram of the external magnification mechanism installed and connected to the distal end portion of the endoscope according to an embodiment of the present application.

[0082] Among them, as Figure 1 and 9 shown, preferably, the outer frame 11 of the lens assembly can be a structure in the form of a tip cap. A limiting structure 111 is provided on the outer frame 11 of the lens assembly. The limiting structure 111 is used to define the movement trajectory of the lens assembly 12 on the distal end surface of the distal end portion 2 of the endoscope. And the lens assembly 12 is fixed on the outer frame 11 of the lens assembly and can move relative to the outer frame 11 of the lens assembly, so that when the outer frame 11 of the lens assembly is connected to the distal end portion 2 of the endoscope, the lens assembly 12 moves on the distal end surface of the distal end portion 2 of the endoscope. Preferably, the limiting structure 111 and the outer frame 11 of the lens assembly are integral. Preferably, a mating connection hole 111a is provided on the limiting structure 111. Preferably, the limiting structure 111 includes an arc surface, and the main body portion 1221 of the inner lens frame 122 moves along the arc surface. Due to the setting of the limiting structure 111, when the lens assembly 12 moves on the distal end surface of the distal end portion 2 of the endoscope, it will not interfere with or touch other components (the nozzle assembly 22, the illumination lens light - guiding group 23, and the biopsy forceps channel hole) on the distal end surface of the distal end portion 2 of the endoscope.

[0083] As Figure 2 and 6 shown, the lens assembly 12 includes a convex lens 121 and an inner lens frame 122. Preferably, the convex lens 121 is fixed on the inner lens frame 122, and the inner lens frame 122 adopts a sealing effect through a process of encapsulating silicone rubber and stainless - steel metal parts.

[0084] The inner lens frame 122 includes a main body portion 1221 and a connecting portion 1222 protruding outward from the main body portion 1221. The main body portion 1221 is used to accommodate the convex lens 121, and the connecting portion 1222 is rotatably connected to the limiting structure 111 through a first connecting member. Preferably, the first connecting member may include a pin shaft 15. Preferably, the first connecting member may further include a gasket 13. Preferably, the main body portion 1221 is cylindrical in shape.

[0085] As Figure 2 shown, the external magnification mechanism further includes a traction member 14. The traction member 14 is connected to the connecting portion 1222, and the traction member 14 is used to traction the lens assembly 12 to move on the distal end surface of the endoscopic tip 2. Preferably, the connecting portion 1222 is provided with a traction shaft 1222a. The traction member 14 is fixedly connected to the traction shaft 1222a of the connecting portion 1222 and passes through the outer frame 11 of the lens assembly. In one embodiment, referring to Figures 6-8 , the traction member 14 is composed of 2 steel wires. When pulling the steel wires to move, the inner lens frame 122 and the convex lens 121 can be pulled to move on the distal end surface of the endoscopic tip 2. Preferably, the traction shaft 1222a is a hollow structure. When rotatably connecting the inner lens frame 122 with the outer frame 11 of the lens assembly, the pin shaft 15 passes through the traction shaft 1222a and the mating connection hole 111a on the limiting structure 111, and uses the gasket 13 (or snap ring) to connect or position it on the limiting structure 111, so that the inner lens frame 122 can rotate relative to the outer frame 11 of the lens assembly, and the limiting structure 111 in the outer frame 11 of the lens assembly limits the movement trajectory of the inner lens frame 122. More preferably, as Figure 2 shown, the traction shaft 1222a is a structure of a cylindrical hole. Wherein Figure 7 and Figure 8 are two states of the lens group 12 moving on the distal end surface of the endoscopic tip 2 within the outer frame 11 of the lens assembly.

[0086] As Figure 9 shown, the external magnification mechanism 1 is installed at the endoscopic tip 2. The endoscopic tip 2 includes an end cap 25. The outer frame 11 of the lens assembly is locked with the end cap 25 in a snap-fit manner. The outer frame 11 of the lens assembly is a cylindrical structure adapted to the endoscopic tip 2. Preferably, the outer frame 11 of the lens assembly is a transparent structure.

[0087] The imaging module 21 within the endoscopic tip 2 is fixed in relative position with the lens assembly 12 of the external magnification mechanism 1. The beam assembly 23 provides illumination, and the position of the object to be observed is in contact with the end face of the outer frame 11 of the lens assembly. Therefore, the distance between the observed part and the imaging module 21 is fixed, realizing the fixed-focus lens magnification method.

[0088] All documents mentioned in this application are considered to be included in the disclosure of this application as a whole so that they can be used as a basis for modification if necessary. In addition, it should be understood that after reading the above disclosure of this application, those skilled in the art can make various changes or modifications to this application, and these equivalent forms also fall within the scope of protection required by this application.

Claims

1. An external magnification mechanism for a camera assembly of an endoscope, the endoscope including an endoscope distal end portion (2), the camera assembly including an endoscope imaging module (21), the camera assembly being disposed inside the endoscope distal end portion (2), characterized in that, The external magnification mechanism is disposed outside the distal end portion (2) of the endoscope; The external magnification mechanism (1) includes: a lens assembly outer frame (11) and a lens assembly (12). The lens assembly outer frame (11) is detachably connected to the distal end portion (2) of the endoscope, and the lens assembly (12) is connected to the lens assembly outer frame (11); The lens assembly (12) is configured to cooperate with the endoscope imaging module (21) to magnify a target object collected by the endoscope imaging module (21). When the lens assembly (12) is in a working state, the lens assembly (12) overlaps with the endoscope imaging module (21) on the distal end surface of the distal end portion (2) of the endoscope, so that the camera assembly collects a magnified image; When the lens assembly (12) is in a non-working state, the lens assembly (12) is separated from the endoscope imaging module (21) on the distal end surface of the distal end portion (2) of the endoscope, and the camera assembly collects a normal image.

2. The external amplification mechanism according to claim 1, characterized in that The lens assembly (12) is rotatably connected to the lens assembly outer frame (11), and the lens assembly (12) can move relative to the lens assembly outer frame (11) on the distal end surface of the distal end portion (2) of the endoscope.

3. The external amplification mechanism according to claim 2, characterized in that, A limiting structure (111) is provided on the lens assembly outer frame (11), and the limiting structure (111) is used to define the movement trajectory of the lens assembly (12) on the distal end surface of the distal end portion (2) of the endoscope.

4. The external amplification mechanism according to claim 3, characterized in that, The lens assembly (12) includes a convex lens (121) and a lens inner frame (122). The lens inner frame (122) is rotatably connected to the limiting structure (111) on the lens assembly outer frame (11).

5. The external amplification mechanism according to claim 4, characterized in that, The lens inner frame (122) includes a main body portion (1221) and a connecting portion (1222) protruding outward from the main body portion (1221). The main body portion (1221) is used to accommodate the convex lens (121), and the connecting portion (1222) is rotatably connected to the limiting structure (111) through a first connecting member.

6. The external amplification mechanism according to claim 5, characterized in that, The limiting structure (111) includes an arc surface, and the main body portion (1221) of the lens inner frame (122) moves along the arc surface.

7. The external amplification mechanism according to claim 6, characterized in that, The external magnification mechanism further includes a traction member (14). The traction member (14) is connected to the connecting portion (1222), and the traction member (14) is used to traction the lens assembly (12) to move on the distal end surface of the distal end portion (2) of the endoscope.

8. The external amplification mechanism according to claim 7, wherein A traction shaft (1222a) is provided on the connecting portion (1222). The traction member (14) is connected to the traction shaft (1222a) of the connecting portion (1222) and passes through the lens assembly outer frame (11).

9. The external amplification mechanism according to claim 8, wherein, The traction shaft (1222a) has a hollow structure, and the limiting structure is provided with a mating connection hole (111a). When rotatably connecting the lens inner frame (122) and the lens assembly outer frame (11), the first connecting member passes through the traction shaft (1222a) and the mating connection hole (111a).

10. An endoscope, characterized in that, The endoscope includes a camera assembly, and the endoscope further includes an external magnification mechanism for the camera assembly of the endoscope according to any one of claims 1-9.

Images