Endoscope and front end shell and front end assembly thereof

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to an endoscope and a front end shell and a front end assembly thereof. The front end shell comprises a shell body, an installation structure extends out of the inner wall of the shell body, an installation space used for containing a lens assembly of the camera module is arranged in the installation structure, the inner wall of the installation structure can be attached to the outer wall of the lens assembly, an installation part is arranged on the inner wall of the installation structure, and the installation part is used for abutting against and installing the lens assembly. The lens assembly can be limited in the direction extending from the far end of the mounting structure to the near end of the mounting structure, a light guide column mounting position is arranged in the shell, and the light guide column mounting position is located on one side of the mounting space in the direction perpendicular to the axial direction of the light guide column mounting position. By the adoption of the structure, the number of parts needing to be arranged in the front end shell can be reduced, the external size of the circuit board and the radial size and the axial size of the installation structure can be reduced, the purpose of reducing the external size of the front end shell can be achieved, and the problem that the external size of the front end shell is too large is solved.

Description

Technical Field

[0001] The present application belongs to the technical field of medical devices, and specifically relates to an endoscope and a front end shell and a front end component thereof. Background Art

[0002] When diagnosing and treating lesions in the patient's body, an endoscope is usually required. The endoscope includes an operating handle and an insertion part. During specific operation, by controlling the operating handle, the active bending section at the distal end of the insertion part can be pulled by a traction rope to achieve bending action, thereby changing the direction of the distal end of the insertion part.

[0003] In the related art, a camera module and a light source module are arranged in the front end shell at the far end of the insertion part. The camera module includes a lens seat, a lens assembly and a circuit board. The lens assembly includes a lens barrel and a lens assembly. The lens assembly is located in the installation barrel wall in the front end shell, and the lens assembly is supported on the lens seat, and the lens seat is supported on the circuit board to realize the installation of the lens assembly. The light source module includes a light guide column, which is arranged on one side of the lens assembly. It can be seen that there are many parts arranged in the front end shell in the related art, which will cause the external size of the front end shell to be too large. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide an endoscope and its front end shell and front end assembly, which can solve the problem of the current front end shell having excessively large external dimensions.

[0005] In order to solve the above technical problems, this application is implemented as follows:

[0006] In a first aspect, an embodiment of the present application provides a front end shell of an endoscope, comprising a shell, an inner wall of the shell extending out of a mounting structure, the mounting structure having a mounting space for accommodating a lens assembly of a camera module, and the inner wall of the mounting structure can be fitted with the outer wall of the lens assembly,

[0007] The inner wall of the mounting structure is provided with a mounting portion, which is used to abut against and mount the lens assembly and can limit the lens assembly in the direction extending from the distal end to the proximal end of the mounting structure. A light guide column mounting position is provided in the shell, and the light guide column mounting position is located on one side of the mounting space in a direction perpendicular to its own axis.

[0008] In a second aspect, an embodiment of the present application provides a front end assembly of an endoscope, including a light guide column, a lens assembly and the front end shell mentioned above,

[0009] The light guide column is arranged at the light guide column installation position, the lens assembly is arranged in the installation space, the outer wall of the lens assembly is fitted with the inner wall of the installation structure, and the lens assembly is abutted against the installation portion.

[0010] In a third aspect, an embodiment of the present application provides an endoscope, comprising the above-mentioned front end assembly.

[0011] In the embodiment of the present application, the inner wall of the housing extends out of the mounting structure, and the inner wall of the mounting structure is provided with a mounting portion, which is used to abut against and mount the lens assembly, and can limit the lens assembly in the direction extending from the distal end to the proximal end of the mounting structure. It can be seen that the lens assembly of the camera module of the embodiment of the present application can be directly mounted on the mounting portion, so that the lens barrel and lens seat of the camera module can be omitted, and the omission of the lens seat can save the space occupied by the lens seat on the first circuit board, thereby reducing the external dimensions of the first circuit board; and the omission of the lens barrel of the camera module can save the space occupied by the lens barrel in the radial and axial directions of the mounting structure, thereby correspondingly reducing the radial and axial dimensions of the mounting structure, so that the space vacated after the mounting structure is reduced can be used as part of the light guide column installation position to improve the space utilization rate in the front end shell. It can be seen that the use of the structure of the present application can reduce the number of components required to be arranged in the front end shell, and can reduce the external dimensions of the first circuit board and the radial and axial dimensions of the mounting structure, so that the purpose of reducing the external dimensions of the front end shell can be achieved, and the problem of the excessive external dimensions of the front end shell can be solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A schematic diagram of the structure of the front-end component disclosed in the embodiment of the present application;

[0013] Figure 2 A cross-sectional view of the front end assembly disclosed in the embodiment of the present application Figure 1 ;

[0014] Figure 3 A cross-sectional view of the front end assembly disclosed in the embodiment of the present application Figure 2 ;

[0015] Figure 4 This is a schematic diagram of the structure of the installation structure disclosed in the embodiment of the present application.

[0016] Description of reference numerals:

[0017] 100, shell; 101, light guide column installation position; 102, light emitting component installation position; 103, image acquisition component installation position; 104, first avoidance space; 105, second avoidance space; 106, third avoidance space; 110, installation structure; 111, snap-fitting part; 120, installation space; 130, installation part; 131, snap-fitting part; 140, shell body; 150, elastic sleeve; 200, light source module; 210, light guide column; 220, light emitting component; 221, light source; 222, second circuit board; 300, camera module; 310, lens assembly; 320, image acquisition component; 321, image sensor; 322, first circuit board. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0019] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0020] The endoscope and its front end shell and front end assembly provided in the embodiment of the present application are described in detail below through specific embodiments and their application scenarios in combination with the accompanying drawings.

[0021] In each embodiment of the present application, "proximal end" and "distal end" refer to the position of the endoscope and its components relative to the user in the use environment, wherein the end closer to the user is designated as the "proximal end" and the end farther from the user is designated as the "distal end".

[0022] like Figures 1 to 4 As shown, the embodiment of the present application discloses a front end shell of an endoscope, including a housing 100, an inner wall of the housing 100 extends out a mounting structure 110, the mounting structure 110 has a mounting space 120 for accommodating a lens assembly 310 of a camera module 300, and the inner wall of the mounting structure 110 can be fitted with the outer wall of the lens assembly 310. Specifically, the lens assembly 310 here includes a lens holder and a lens, and the lens is arranged on the lens holder; when the lens assembly 310 includes a plurality of lenses, two adjacent lenses can be connected by bonding the lens holders of the two adjacent lenses.

[0023] The inner wall of the mounting structure 110 is provided with a mounting portion 130, which is used to abut against and mount the lens assembly 310, and can limit the lens assembly 310 in the direction extending from the distal end to the proximal end of the mounting structure 110. The housing 100 has a light guide column mounting position 101, which is located on one side of the mounting space 120 in a direction perpendicular to its own axial direction, that is, in a direction perpendicular to the axial direction of the mounting space 120, the light guide column mounting position 101 and the mounting space 120 are spaced apart. Specifically, the light guide column mounting position 101 is used to mount the light guide column 210.

[0024] In the embodiment of the present application, the inner wall of the housing 100 extends out the mounting structure 110, and the inner wall of the mounting structure 110 is provided with a mounting portion 130, and the mounting portion 130 is used to abut against and mount the lens assembly 310, and can limit the lens assembly 310 in the direction extending from the distal end to the proximal end of the mounting structure 110. It can be seen that the lens assembly 310 of the camera module 300 of the embodiment of the present application can be directly mounted on the mounting portion 130, so that the lens barrel and the lens seat of the camera module 300 can be omitted, and the omission of the lens seat can save the space occupied by the lens seat in the first circuit board 322, thereby reducing the external size of the first circuit board 322; and the omission of the lens barrel of the camera module 300 can save the space occupied by the lens barrel in the radial and axial directions of the mounting structure 110, thereby reducing the radial size and axial size of the mounting structure 110 accordingly, so that the space vacated after the mounting structure 110 is reduced can be used as a part of the light guide column mounting position 101, so as to improve the space utilization rate in the front end shell. It can be seen that the use of the structure of the present application can reduce the number of components that need to be arranged in the front end shell, and can reduce the external dimensions of the first circuit board 322 and the radial and axial dimensions of the mounting structure 110, thereby achieving the purpose of reducing the external dimensions of the front end shell and solving the problem of the front end shell having excessive external dimensions.

[0025] It should be noted that the radial direction of the mounting structure 110 described above is a direction perpendicular to the axial direction of the mounting structure 110 , and the cross-sectional profile of the mounting structure 110 is not limited to a circle, and may also be a polygon, an arc, etc.

[0026] In an optional embodiment, the housing 100 further includes a light-emitting component installation position 102, the light-emitting component installation position 102 and the light-guiding column installation position 101 are located on the same side of the installation space 120, and the light-emitting component installation position 102 is connected to the light-guiding column installation position 101, and the light-guiding column installation position 101 is closer to the far end of the housing 100 than the light-emitting component installation position 102. Specifically, the light-emitting component installation position 102 described in the present application is used to accommodate the light-emitting component 220, and the light-emitting component 220 includes a light source 221 and a second circuit board 222, and the light source 221 is disposed on the second circuit board 222 and electrically connected to the second circuit board 222; Figure 3Taking the viewing angle shown as an example, the light guide column mounting position 101 is located above the light emitting component mounting position 102. When the light emitting component 220 is disposed at the light emitting component mounting position 102 and the light guide column 210 is disposed at the light guide column mounting position 101, the light emitted by the light source 221 can be incident on the light guide column 210, and the light guide column 210 can guide the light so as to be incident on the object to be viewed.

[0027] The housing 100 also has an image acquisition component installation position 103, which is located on the side of the installation space 120 facing the proximal end of the housing 100, and the image acquisition component installation position 103 and the light emitting component installation position 102 are staggered in the radial direction of the housing 100. Specifically, the image acquisition component installation position 103 is used to accommodate the image acquisition component 320, which includes an image sensor 321 and a first circuit board 322. The image sensor 321 is disposed on the first circuit board 322 and is electrically connected to the first circuit board 322; the radial direction of the housing 100 here refers to a direction perpendicular to the axial direction of the housing 100, such as Figure 3 The direction of extension from left to right in the figure does not limit the cross-sectional profile of the shell 100 to a circle, and it can also be a polygon, etc.

[0028] In this embodiment, Figure 3 Taking the shown viewing angle as an example, the light-emitting component mounting position 102 and the light-guiding column mounting position 101 are located on the same side of the mounting space 120, that is, the light-emitting component mounting position 102 is also located on the side of the mounting space 120 in a direction perpendicular to its own axial direction, and the light-emitting component mounting position 102 is not located below the mounting space 120; and the image acquisition component mounting position 103 is located on the side of the mounting space 120 toward the proximal end of the shell 100, that is, the image acquisition component mounting position 103 is located below the mounting space 120. Therefore, the light-emitting component mounting position 102 of this embodiment is located obliquely above the image acquisition component mounting position 103. In specific applications, the image sensor 321 of the image acquisition component 320 can be located outside the illumination range of the light source 221 of the light-emitting component 220, thereby preventing the light emitted by the light source 221 from entering the image sensor 321 and interfering with the imaging of the image sensor 321. In addition, the light emitting component mounting position 102 and the image acquisition component mounting position 103 of the present embodiment are two independent mounting positions, and the light emitting component 220 and the image acquisition component 320 are two independent components, and there is no common part between the two. Therefore, adjusting the position of one of the light emitting component 220 and the image acquisition component 320 will not cause the position of the other to change, so it is convenient to independently adjust the relative position between the light emitting component 220 and the light guide column 210, and the relative position between the image acquisition component 320 and the lens component 310; and the structure of the present embodiment can make the light emitting component 220 closer to the far end of the front end shell, thereby enhancing the lighting effect of the light emitting component 220 on the viewfinder.

[0029] In an optional embodiment, in the axial direction of the housing 100, a portion of the light emitting component mounting position 102 is opposite to the image acquisition component mounting position 103, that is, in the axial direction of the housing 100, there is an overlapping portion between the light emitting component mounting position 102 and the image acquisition component mounting position 103. Since the image acquisition component mounting position 103 is located below the installation space 120, such a setting can make the light emitting component mounting position 102 closer to the installation space 120 in the radial direction, so that the layout in the radial direction of the housing 100 can be more compact, thereby further reducing the external dimensions of the front end shell. Of course, in the axial direction of the housing 100, the light emitting component mounting position 102 can also be misaligned with the image acquisition component mounting position 103, and this application does not limit this.

[0030] In an optional embodiment, a first avoidance space 104 is provided in the shell 100, and the first avoidance space 104 is located on the side of the light-emitting component mounting position 102 away from the light guide column mounting position 101, that is, the light-emitting component mounting position 102 is located between the light guide column mounting position 101 and the first avoidance space 104, and the light-emitting component mounting position 102 is connected to the first avoidance space 104, and the light-emitting component 220 of the light source module 200 can enter the first avoidance space 104 from the light-emitting component mounting position 102. During the process of installing the light-emitting component 220 in the front end shell of the specific application embodiment of the present application, or after the installation of the light-emitting component 220 is completed, if it is necessary to adjust the lighting effect of the light source 221, it is necessary to move the light-emitting component 220, so as to adjust the relative position between the light-emitting component 220 and the light guide column 210. Therefore, in this embodiment, a first avoidance space 104 connected to the light-emitting component installation position 102 is set below the light-emitting component installation position 102 to provide an avoidance space for the light-emitting component 220 to move downward, so that the light-emitting component 220 can enter the first avoidance space 104 from the light-emitting component installation position 102, thereby achieving the purpose of adjusting the lighting effect of the light source 221.

[0031] In an optional embodiment, there is a second avoidance space 105 between the image acquisition component installation position 103 and the installation space 120, and the second avoidance space 105 is connected to the image acquisition component installation position 103, and the image acquisition component 320 of the camera module 300 can enter the second avoidance space 105 from the image acquisition component installation position 103. In the process of installing the image acquisition component 320 on the front end shell of the specific application embodiment of the present application, or after the installation of the image acquisition component 320 is completed, if it is necessary to adjust the framing effect of the image acquisition component 320, the relative position between the image acquisition component 320 and the lens component 310 can be adjusted. Therefore, in this embodiment, a second avoidance space 105 connected to the image acquisition component installation position 103 is set above the image acquisition component installation position 103, and the second avoidance space 105 can provide an avoidance space for the image acquisition component 320 to move upward, so that the image acquisition component 320 can enter the second avoidance space 105 from the image acquisition component installation position 103, thereby achieving the purpose of adjusting the framing effect of the image acquisition component 320.

[0032] And / or, in an optional embodiment, the image acquisition component installation position 103 has a third avoidance space 106 on the side away from the installation space 120, and the third avoidance space 106 is connected to the image acquisition component installation position 103, so that the image acquisition component 320 of the camera module 300 can enter the third avoidance space 106 from the image acquisition component installation position 103. Similarly, in this embodiment, a third avoidance space 106 connected to the image acquisition component installation position 103 is provided below the image acquisition component installation position 103, and the third avoidance space 106 can provide an avoidance space for the image acquisition component 320 to move downward, so that the image acquisition component 320 can enter the third avoidance space 106 from the image acquisition component installation position 103, thereby achieving the purpose of adjusting the framing effect of the image acquisition component 320.

[0033] In an optional embodiment, the mounting portion 130 is a mounting protrusion, which is protruded from the inner wall of the mounting structure 110. In this embodiment, the mounting portion 130 is a mounting protrusion, which is protruded from the inner wall of the mounting structure 110, so that the cross-sectional area of ​​the mounting structure 110 can be increased, thereby increasing the structural strength of the mounting structure 110. Of course, the mounting portion 130 can also be a mounting groove, in which case an insertion groove extending along the axial direction can be provided on the mounting structure 110, the distal end of the insertion groove extends to the distal end face of the mounting structure 110, and the proximal end of the insertion groove extends to the mounting groove. In this case, an abutment protrusion can be provided on the outer peripheral surface of the lens assembly 310. During installation, the abutment protrusion can enter the mounting groove through the insertion groove, and the inner wall of the mounting groove can stop and limit the abutment protrusion, thereby achieving the installation of the lens assembly 310.

[0034] And / or, in an optional embodiment, the shape of the mounting portion 130 is annular, which can improve the stability of the mounting portion 130 on the lens assembly 310. Of course, the mounting portion 130 can also be arc-shaped, and the number of mounting portions 130 can be set to multiple.

[0035] In an optional embodiment, in the axial direction of the mounting structure 110, the mounting protrusion can move relative to the inner wall of the mounting structure 110. In this embodiment, the mounting protrusion is used to mount against the lens assembly 310. When the portion of the lens assembly 310 abutting against the mounting protrusion remains unchanged, the distance between the distal end surface of the mounting protrusion and the distal end surface of the mounting structure 110 can determine the height dimension of the lens assembly 310 provided on the mounting protrusion. Therefore, in this embodiment, the mounting protrusion can move relative to the mounting structure 110. By moving the mounting protrusion, the mounting structure 110 can adapt to lens assemblies 310 of different height dimensions, so as to improve the adaptability of the mounting structure 110. It should be noted that this embodiment is an improvement based on the embodiment of "the mounting portion is a mounting protrusion".

[0036] In an optional embodiment, one of the mounting protrusion and the inner wall of the mounting structure 110 is provided with at least two clamping portions 111 spaced apart along the axial direction of the mounting structure 110, and the other is provided with a clamping fitting portion 131, and the plurality of clamping portions 111 can be clamped and fitted with the clamping fitting portion 131. Optionally, the clamping portion 111 can be a clamping protrusion or a clamping groove, and the clamping fitting portion 131 can be a clamping groove or a clamping protrusion.

[0037] In this embodiment, at least two clamping portions 111 are arranged at intervals along the axial direction of the mounting structure 110, and the mounting protrusion can be moved by pressing the mounting protrusion so that the clamping fitting portion 131 can be clamped and fitted with different clamping portions 111, so that the distal end surface of the mounting protrusion can be located at different positions in the axial direction of the mounting structure 110, and the distance between the distal end surface of the mounting protrusion and the distal end surface of the mounting structure 110 can be adjusted.

[0038] Alternatively, in another optional embodiment, the mounting protrusion is threadedly connected to the inner wall of the mounting structure 110, so that the mounting protrusion can be moved by rotating the mounting protrusion, so that the distal end surface of the mounting protrusion can be located at different positions in the axial direction of the mounting structure 110, and the distance between the distal end surface of the mounting protrusion and the distal end surface of the mounting structure 110 can be adjusted.

[0039] In an optional embodiment, the housing 100 includes a housing body 140 and an elastic sleeve 150. The housing body 140 is made of a metal material. The housing body 140 is a cylindrical member. The distal end of the housing body 140 is a closed end, and the proximal end of the housing body 140 is an open end. The elastic sleeve 150 covers the distal end of the housing body 140. The housing body 140 includes a mounting structure 110, and the mounting structure 110 is connected to the inner end surface of the distal end of the housing body 140. In this embodiment, the housing body 140 is made of a metal material, and the housing body 140 includes the mounting structure 110. Therefore, the mounting structure 110 is also made of a metal material. In this way, the mounting structure 110 has a greater rigidity, thereby improving the support stability of the mounting structure 110 on the lens assembly 310. The mounting space 120 in the mounting structure 110 made of a metal material can be formed by machining. The mounting space 120 formed by machining has a higher precision, thereby improving the mounting precision of the lens assembly 310. In addition, the elastic sleeve 150 is coated on the outer portion of the distal end of the shell body 140. The elastic sleeve 150 is relatively soft, which can reduce the risk of the front shell contacting the human tissue and causing damage to the human tissue. Of course, the shell 100 can also be a plastic part or a pure metal part, and this application is not limited to this.

[0040] The embodiment of the present application also discloses a front end assembly of an endoscope, including a light guide column 210, a lens assembly 310 and a front end shell described in any of the above embodiments, wherein the light guide column 210 is disposed at the light guide column mounting position 101, the lens assembly 310 is disposed in the mounting space 120, the outer wall of the lens assembly 310 is in contact with the inner wall of the mounting structure 110, and the lens assembly 310 is in contact with the mounting portion 130. The structure of the present application can reduce the number of components required to be arranged in the front end shell, and can reduce the outer dimensions of the first circuit board 322 and the radial and axial dimensions of the mounting structure 110, thereby achieving the purpose of reducing the outer dimensions of the front end shell and solving the problem of excessive outer dimensions of the front end shell.

[0041] The present application also discloses an endoscope, including the front end assembly described above. The endoscope referred to in the present application may be a bronchoscope, a pyeloscope, an esophagoscope, a gastroscope, a colonoscope, an otoscope, a rhinoscope, a stomatoscope, a laryngoscope, a colposcope, a laparoscope, an arthroscope, etc. The present application does not specifically limit the type of the endoscope.

[0042] The above embodiments of the present application focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here. The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the present application, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present application and the claims, all of which are within the protection of the present application.

Claims

1. A front end shell of an endoscope, characterized in that: The invention comprises a housing (100), wherein an installation structure (110) extends from the inner wall of the housing (100), wherein the installation structure (110) has an installation space (120) for accommodating a lens assembly (310) of a camera module (300), and the inner wall of the installation structure (110) can be fitted with the outer wall of the lens assembly (310). The inner wall of the mounting structure (110) is provided with a mounting portion (130), and the mounting portion (130) is used to abut against and mount the lens assembly (310), and can limit the lens assembly (310) in a direction extending from the distal end to the proximal end of the mounting structure (110). The housing (100) has a light guide column mounting position (101), and the light guide column mounting position (101) is located on one side of the mounting space (120) in a direction perpendicular to its own axial direction.

2. The front end housing according to claim 1, characterized in that: The housing (100) further comprises a light emitting component installation position (102), the light emitting component installation position (102) and the light guide column installation position (101) are located on the same side of the installation space (120), the light emitting component installation position (102) is connected to the light guide column installation position (101), and the light guide column installation position (101) is closer to the far end of the housing (100) than the light emitting component installation position (102). The shell (100) also has an image acquisition component installation position (103), the image acquisition component installation position (103) is located on a side of the installation space (120) facing the proximal end of the shell (100), and the image acquisition component installation position (103) and the light emitting component installation position (102) are offset in the radial direction of the shell (100).

3. The front end housing according to claim 2, characterized in that: In the axial direction of the housing (100), a portion of the light emitting component installation position (102) is opposite to the image acquisition component installation position (103).

4. The front end housing according to claim 2, characterized in that: The housing (100) has a first avoidance space (104) therein, the first avoidance space (104) being located on a side of the light-emitting component installation position (102) away from the light-guiding column installation position (101), and the light-emitting component installation position (102) is connected to the first avoidance space (104), and the light-emitting component (220) of the light source module (200) can enter the first avoidance space (104) from the light-emitting component installation position (102).

5. The front end housing according to claim 2, characterized in that: A second avoidance space (105) is provided between the image acquisition component installation position (103) and the installation space (120), the second avoidance space (105) is connected to the image acquisition component installation position (103), and the image acquisition component (320) of the camera module (300) can enter the second avoidance space (105) from the image acquisition component installation position (103); and / or, A third avoidance space (106) is provided on a side of the image acquisition component installation position (103) facing away from the installation space (120); the third avoidance space (106) is connected to the image acquisition component installation position (103); and the image acquisition component (320) of the camera module (300) can enter the third avoidance space (106) from the image acquisition component installation position (103).

6. The front end housing according to claim 1, characterized in that: The mounting portion (130) is a mounting protrusion, and the mounting protrusion is arranged to protrude from the inner wall of the mounting structure (110); and / or the mounting portion (130) is annular in shape.

7. The front end housing according to claim 6, characterized in that: In the axial direction of the mounting structure (110), the mounting protrusion is movable relative to the inner wall of the mounting structure (110).

8. The front end housing according to claim 7, characterized in that: One of the mounting protrusion and the inner wall of the mounting structure (110) is provided with at least two snap-fitting portions (111) spaced apart along the axial direction of the mounting structure (110), and the other is provided with a snap-fitting portion (131), and a plurality of the snap-fitting portions (111) can be snap-fitted with the snap-fitting portion (131); or, the mounting protrusion is threadedly connected to the inner wall of the mounting structure (110).

9. A front end assembly of an endoscope, characterized in that: It comprises a light guide column (210), a lens assembly (310) and a front end shell as claimed in any one of claims 1 to 8, The light guide column (210) is arranged at the light guide column installation position (101), the lens assembly (310) is arranged in the installation space (120), the outer wall of the lens assembly (310) is in contact with the inner wall of the installation structure (110), and the lens assembly (310) is in abutment with the installation portion (130).

10. An endoscope, characterized in that: Comprising the front end assembly as claimed in claim 9.

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