Front end assembly, insertion portion and endoscope

Abstract

The application discloses a front-end assembly, an insertion part and a endoscope, and relates to the technical field of medical instruments. The front-end assembly can be used for the endoscope. The endoscope comprises an instrument tube. The front-end assembly comprises a mounting seat, a camera module and a light source. The mounting seat has a main body part and a light-transmitting part. The main body part has a mounting cavity. The instrument tube is arranged in the mounting cavity. The camera module is arranged on the main body part. The light-transmitting part is arranged adjacent to the camera module. The light source is injection molded in the light-transmitting part, and the light source is arranged adjacent to the outer peripheral wall of the side of the light-transmitting part away from the camera module. The front-end assembly is beneficial to reducing the radial space occupied by the light source in the front-end assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, and in particular to a front end assembly, an insertion portion and an endoscope. Background Art

[0002] An endoscope is a commonly used medical device that can directly access the body's natural channels for inspection, providing doctors with sufficient diagnostic information for treating diseases. An endoscope consists of an insertion section and an operating section. The proximal end of the insertion section is connected to the operating section, while the distal end of the insertion section is provided with a front-end assembly. The front-end assembly can be inserted into the human body through a body cavity or surgical incision. An instrument tube is provided within the insertion section, extending through the insertion section to allow the passage of instruments or media. The front-end assembly is equipped with a light source module for illumination and a camera module for imaging.

[0003] In related art, the front-end assembly includes a front-end seat. This seat has a receiving cavity. Because the light source module, camera module, and distal end of the instrument tube are all located within the receiving cavity, the diameter of the instrument tube is limited by the light source module and camera module, resulting in a smaller diameter of the instrument tube, making it difficult to insert the instrument.

[0004] Therefore, reducing the space occupied by the light source module in the front-end components is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0005] The present invention discloses a front end assembly, an insertion portion and an endoscope, so as to solve the technical problem in the related art that a light source module in a front end assembly occupies a large radial space of the front end assembly.

[0006] In order to solve the above problems, the present invention adopts the following technical solutions:

[0007] In a first aspect, the present application provides a front-end assembly. The front-end assembly can be used in an endoscope. Exemplarily, the endoscope includes an instrument tube. The front-end assembly includes a mounting seat, a camera module, and a light source. The mounting seat has a main body and a light-transmitting portion. The main body has a mounting cavity. The instrument tube is disposed in the mounting cavity. The camera module is disposed in the main body. The light-transmitting portion is disposed adjacent to the camera module. The light source is injection-molded within the light-transmitting portion and disposed adjacent to an outer peripheral wall of the light-transmitting portion on a side facing away from the camera module.

[0008] The technical solution adopted by the present invention can achieve the following beneficial effects:

[0009] In the front-end assembly provided by the present application, the light source is injection-molded in the light-transmitting portion, and the light-transmitting portion can be used to seal the light source portion, which is beneficial to improving the sealing of the light source portion. In addition, the light source is injection-molded in the light-transmitting portion, so that the light source portion can be arranged adjacent to the peripheral wall of the light-transmitting portion on the side away from the camera module, which is beneficial to reducing the distance between the side wall of the light source and the peripheral wall of the front-end assembly, and reducing the space occupied by the light source assembly. Therefore, the front-end assembly provided by the present application can increase the proportion of the installation cavity occupied by the front-end assembly space. In this way, when the outer diameter of the front-end assembly is constant, it is beneficial to obtain a larger instrument channel to facilitate the passage of instruments. When the size of the instrument channel is constant, it is beneficial to reduce the outer diameter of the front-end assembly so that the front-end assembly can enter a narrower cavity.

[0010] According to some optional embodiments, the viewfinder side of the camera module protrudes from the light emitting side of the light source. Along the direction from the distal end of the front end assembly to the proximal end of the front end assembly, the light emitting side of the light source is inclined toward the camera module.

[0011] According to some optional embodiments, the normal of the light emitting side of the light source adjacent to the camera module is tangent to the edge of the camera module.

[0012] According to some optional embodiments, the front-end assembly further includes a flexible circuit board. The light source is disposed on the flexible circuit board. The main body has a first positioning surface. A side of the light source facing away from the light-emitting side or a side of the flexible circuit board facing away from the light source abuts against the first positioning surface.

[0013] According to some optional embodiments, the front-end assembly further includes a rigid circuit board and a spacer. The spacer is disposed on the rigid circuit board. The spacer has a second positioning surface. A side of the light source, facing away from the light-emitting side, is abutted against the second positioning surface, and the light source is connected to the rigid circuit board.

[0014] According to some optional embodiments, at least a portion of a side of the light source away from the camera module is flush with an outer peripheral wall of a side of the light-transmitting portion away from the camera module.

[0015] According to some optional embodiments, at least a portion of the light-transmitting portion is covered by the outer peripheral wall of the main body.

[0016] According to some optional embodiments, the light-transmitting portion is connected to the main body portion by injection molding.

[0017] According to some optional embodiments, the cavity wall of the mounting cavity is tangent to the side wall of the light source and / or camera module.

[0018] According to some optional embodiments, the front-end assembly includes two light sources. The mounting cavity and the camera module are distributed along a first direction of the main body. Along the first direction, the main body is tilted toward a side closer to the camera module.

[0019] In a second aspect, the present application provides an insertion part. The insertion part has the same technical features as the above-mentioned front end assembly, and can achieve the same technical effects, which will not be repeated here.

[0020] In a third aspect, the present application provides an endoscope. The endoscope has the same technical features as the above-mentioned front end assembly, and can achieve the same technical effects, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in 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 only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0022] Figure 1 is a schematic diagram of the front end assembly provided by some optional embodiments of the present application;

[0023] Figure 2 is a top view of the front end assembly provided by some optional embodiments of the present application; Figure 1 ;

[0024] Figure 3 is a cross-sectional view of the front end assembly provided by some optional embodiments of the present application at E-E in Figure 2 ;

[0025] Figure 4 is an assembly diagram of the light source, the camera module and the circuit board provided by some optional embodiments of the present application;

[0026] Figure 5 is a cross-sectional view of the front end assembly provided by some optional embodiments of the present application; Figure 1 ;

[0027] Figure 6 is an enlarged view of B in Figure 5 ;

[0028] Figure 7 is a cross-sectional view of the front end assembly provided by some optional embodiments of the present application; Figure 2 ;

[0029] Figure 8 is an enlarged view of A in Figure 7 ;

[0030] Figure 9 is a top view of the front end assembly provided by some optional embodiments of the present application; Figure 2 .

[0031] BRIEF DESCRIPTION OF DRAWINGS

[0032] 100-mounting seat; 101-mounting cavity; 102-mounting space; 110-main body; 111-first positioning surface; 112-edge portion; 120-light-transmitting portion; 200-camera module; 300-light source; 310-light-emitting side; 400-flexible circuit board; 500-rigid circuit board; 600-spacer; 610-second positioning surface. DETAILED DESCRIPTION

[0033] To make the objectives, technical solutions, and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other implementations obtained by those of ordinary skill in the art without inventive effort are within the scope of protection of the present invention.

[0034] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0035] In each embodiment of the present application, "proximal end" and "distal end" refer to the position of the endoscope and its accessories relative to the user in the use environment, wherein the end closer to the user is designated as the "proximal end" and the end farther from the user is designated as the "distal end".

[0036] In the related art, the mounting base of the front-end assembly has a mounting cavity, and the light source is installed in the mounting cavity through assembly. This provides support for the light source through the mounting base to protect it and prevent changes in its installation position. It also provides a sealed installation space for the light source to prevent it from being corroded by acidic or alkaline secretions in the body. It also helps prevent the entry of substances in the body that could affect the brightness of the light emitted by the light source. However, the mounting cavity for the light source on the mounting base occupies a large space, thereby squeezing the space for installing the instrument tube, resulting in a smaller diameter of the instrument tube.

[0037] In response to the above problems, the present application provides a front-end assembly, an insertion portion and an endoscope. In the front-end assembly, the mounting seat is divided into two parts, one part is the main body, and the other part is the light-transmitting portion. The main body can be used to provide a mounting base for the camera module. The light-transmitting portion is arranged on the main body, and the light source is formed in the light-transmitting portion by injection molding. In this way, the light-transmitting portion can provide support for the light source part to limit the position of the light source and prevent the light source from moving relative to the mounting seat. In addition, the light-transmitting portion can also achieve sealing of the light source, improve the sealing performance of the light source part, and thus help prevent the body's liquid from directly contacting the light source, ensuring the normal operation of the light source.

[0038] The following is combined with Figures 1 to 9 , the front-end assembly, insertion portion and endoscope provided in the embodiments of the present application are described in detail through specific embodiments and their application scenarios.

[0039] In a first aspect, embodiments of the present application provide a front-end assembly. This front-end assembly can be applied to an endoscope. Exemplarily, the endoscope includes an insertion portion and an operating portion. Exemplarily, the proximal end of the insertion portion is connected to the operating portion. The front-end assembly forms the distal end of the insertion portion. Exemplarily, the endoscope includes an instrument tube. The instrument tube is disposed in the insertion portion and extends through the insertion portion along its extension direction to transport an instrument or medium through the instrument tube.

[0040] Reference Figure 1 The front-end assembly provided in this application includes a mounting base 100, a camera module 200 and a light source 300. Among them, the mounting base 100 is a basic structural component that can provide an installation foundation for the camera module 200, the light source 300 and the instrument tube.

[0041] For example, refer to Figure 1 The mounting base 100 has a main body 110 and a light-transmitting portion 120. The light-transmitting portion 120 is made of a light-transmitting material so that light can pass through the light-transmitting portion 120. Figure 1 As shown, the outline of the components of the main body 110 located in the light-transmitting portion 120 can be seen from the outside. For example, the outline of the components located in the light-transmitting portion 120 is Figure 1 The outline is shown in dashed lines.

[0042] Reference Figure 1 The main body 110 has a mounting cavity 101. The instrument tube is disposed in the mounting cavity 101. Exemplarily, the mounting cavity 101 extends through the main body 110 along its extension direction. The extension direction of the main body 110 is from the proximal end of the main body 110 to the distal end of the main body 110. The mounting cavity 101 provides a mounting space for the instrument tube, allowing the instrument tube to pass through the main body 110 along its extension direction. In this way, instruments or media can enter or exit the mounting base 100 from the distal end.

[0043] like Figure 1 As shown, the camera module 200 is disposed on the main body 110. As an optional embodiment, the mounting base 100 has a mounting groove, and at least a portion of the camera module 200 is located in the mounting groove.

[0044] Reference Figure 3 , the light-transmitting portion 120 is disposed adjacent to the camera module 200. Figure 1 The light source 300 is injection molded into the light-transmitting portion 120, and the light source 300 is disposed adjacent to the outer peripheral wall of the light-transmitting portion 120 away from the camera module 200. It should be noted that the light source 300 is injection molded into the light-transmitting portion 120, that is, at least a portion of the light source 300 is embedded in the light-transmitting portion 120 by injection molding.

[0045] Exemplarily, the light source 300 is formed in the light-transmitting portion 120 by injection molding, and the light-transmitting portion 120 may be formed by glue injection molding. Specifically, the light source 300 may be installed in a predetermined position and then glue is injected so that the light-transmitting portion 120 can cover the light source 300. In this way, after the light-transmitting portion 120 is fixed, the light source 300 can be fixed by the light-transmitting portion 120, and the light source 300 can be protected by the light-transmitting portion 120, thereby improving the waterproof performance of the light source 300. In addition, the light source 300 can be made closer to the outer peripheral wall of the side of the light-transmitting portion 120 away from the camera module 200 by injection molding. Specifically, there is no need to form an avoidance space for installing the light source 300 in the mounting base 100, which is beneficial to improving the compactness of the assembly of the mounting base 100 and the light source 300 and reducing the space occupied by the light source 300.

[0046] For example, the material of the light-transmitting portion 120 may be, but is not limited to, polymethyl methacrylate (PMMA), polystyrene (PS), or polycarbonate (PC). The light source 300 may be, but is not limited to, an LED lamp.

[0047] In some optional embodiments, the main body 110 has a receiving cavity for mounting the light source 300. For example, at least a portion of the light source 300 is located within the receiving cavity. In further optional embodiments, at least a portion of the light-transmitting portion 120 is embedded within the receiving cavity, thereby securing the light source 300 within the receiving cavity via the light-transmitting portion 120.

[0048] In the above embodiment, a housing cavity for mounting the light source 300 is provided on the main body 110. On the one hand, the compactness of the connection between the light-transmitting portion 120 and the main body 110 can be improved. On the other hand, the main body 110 can also be used to provide an injection space for the injection-molded light-transmitting portion 120, which is beneficial to the injection molding of the light-transmitting portion 120 and reduces the difficulty of preparing the light-transmitting portion 120.

[0049] In some further optional embodiments, the housing cavity for mounting the light source 300 in the main body 110 passes through the outer peripheral wall of the main body 110. In this way, the main body 110 can avoid constraining the light source 300 from being positioned closer to the outer peripheral wall of the front-end assembly, thereby facilitating placement of the light source 300 closer to the outer peripheral wall of the front-end assembly.

[0050] Reference Figure 1 and Figure 3 In some optional embodiments, the viewfinder side of the camera module 200 protrudes from the light-emitting side 310 of the light source 300. The viewfinder side of the camera module 200 is the side of the camera module 200 for external light to enter the image. The light-emitting side 310 of the light source 300 is the side from which the light in the light source 300 is emitted. For example, Figure 3 As shown, at least a portion of the camera module 200 protrudes from the light-emitting side 310 of the light source 300 along the y-axis direction.

[0051] In the above embodiment, the viewing side of the camera module 200 protrudes from the light emitting side 310 of the light source 300, which can prevent the light emitted by the light source 300 from directly entering the camera, thereby preventing bright spots from appearing in the imaging of the camera module 200.

[0052] In some optional embodiments, the main body 110 has an edge portion 112. Exemplarily, the edge portion 112 surrounds the edge of the viewfinder side of the camera module 200. In some optional embodiments, the material of the edge portion 112 is an opaque material. Exemplarily, the edge portion 112 can be, but is not limited to, a light-absorbing material. For example, the edge portion 112 can be made of a black material, so that part of the light emitted by the light source 300 can be blocked by the edge portion 112 to prevent the light emitted by the light source 300 from being directly absorbed into the camera module 200.

[0053] Reference Figure 3 In some optional embodiments, the light emitting side 310 of the light source 300 is tilted toward the camera module 200 along the direction from the distal end of the front end assembly to the proximal end of the front end assembly. For example, the direction from the distal end of the front end assembly to the proximal end of the front end assembly is Figure 3 The direction is opposite to that shown by the x-axis.

[0054] In the above embodiment, the light emitting side 310 of the light source 300 is tilted, which is beneficial to reducing the radial size of the light source 300 in the front end assembly. Figure 3As shown, the tilted light-emitting side 310 of the light source 300 can reduce the size of the light source 300 in the direction indicated by the y-axis. Therefore, this embodiment further reduces the radial dimension of the front-end assembly occupied by the light source 300, providing more space for installing the instrument tube, thereby facilitating a larger diameter of the instrument tube. It should be noted that a larger diameter instrument tube allows for smoother passage of instruments or media through the tube.

[0055] In addition, in the above embodiment, the light emitted by the light source 300 can be tilted toward the distal side of the camera module 200, which is beneficial to improving the brightness of the framing area of ​​the camera module 200, thereby improving the framing quality of the camera module 200 and accurately observing the internal tissue conditions.

[0056] Reference Figure 3 According to some optional embodiments, the normal of the light emitting side 310 of the light source 300 adjacent to the camera module 200 is tangent to the edge of the camera module 200. In some optional embodiments, the surface of the light emitting side 310 of the light source 300 is a plane. The normal of the light emitting side 310 of the light source 300 is: a straight line perpendicular to the surface of the light emitting side 310 of the light source 300. In other optional embodiments, the surface of the light emitting side 310 of the light source 300 is concave or convex. The normal of a certain position of the light emitting side 310 of the light source 300 is: a straight line perpendicular to the tangent plane of the light emitting side 310 of the light source 300 at that position.

[0057] The front-end assembly provided in the above embodiment is beneficial in preventing the light emitted by the light source 300 from being excessively blocked by the camera module 200 , and is beneficial in ensuring the brightness of the viewing area of ​​the camera module 200 .

[0058] According to some optional embodiments, the front-end component further includes a circuit board, which is connected to the light source 300 and / or the camera module 200 to supply power or transmit signals to the light source 300 and / or the camera module 200 through the circuit board.

[0059] Reference Figure 4 and Figure 5 In some optional embodiments, the front-end assembly further includes a flexible circuit board 400. The light source 300 is disposed on the flexible circuit board 400 so that the flexible circuit board 400 supplies energy to the light source 300. The main body 110 has a first positioning surface 111. The side of the light source 300 facing away from the light-emitting side 310 or the side of the flexible circuit board 400 facing away from the light source 300 abuts against the first positioning surface 111.

[0060] Reference Figure 5, the main body 110 has a positioning portion. The first positioning surface 111 is provided on the positioning portion. Exemplarily, along the direction from the distal end of the main body 110 to the proximal end of the main body 110, the first positioning surface 111 is inclined in the direction close to the camera module 200. Exemplarily, the inclination angle of the first positioning surface 111 is equal to the inclination angle of the light emitting side 310 of the light source 300. In the process of assembling the light source 300, the light source 300 can be positioned and installed on the first positioning surface 111 to provide support for the light source 300 through the main body 110, which is beneficial to improve the accuracy of the inclination angle of the light source 300 relative to the camera module 200 and reduce the difficulty of installing the light source 300. Exemplarily, the light source 300 can be fixed to the first positioning surface 111 by bonding and / or clamping to limit the inclination angle of the light emitting side 310 of the light source 300 by the first positioning surface 111.

[0061] Reference Figure 7 and Figure 8 In some optional embodiments, the front-end assembly further includes a rigid circuit board 500 and a spacer 600. The spacer 600 is disposed on the rigid circuit board 500. The spacer 600 has a second positioning surface 610, and a side of the light source 300 away from the light-emitting side 310 is affixed to the second positioning surface 610, and the light source 300 is connected to the rigid circuit board 500. Exemplarily, along the direction from the distal end of the main body 110 to the proximal end of the main body 110, the second positioning surface 610 is inclined toward the direction close to the camera module 200. Exemplarily, the inclination angle of the second positioning surface 610 is equal to the inclination angle of the light-emitting side 310 of the light source 300.

[0062] During the assembly of the light source 300, the light source 300 can be positioned and installed on the second positioning surface 610 to provide support for the light source 300 through the main body 110, thereby helping to improve the accuracy of the tilt angle of the light source 300 relative to the camera module 200 and reduce the difficulty of installing the light source 300. For example, the light source 300 can be fixed to the second positioning surface 610 by bonding and / or welding, so that the tilt angle of the light emitting side 310 of the light source 300 is defined by the second positioning surface 610.

[0063] In some optional embodiments, the spacer 600 may be, but is not limited to, a capacitor.

[0064] In the above embodiment, the light source 300 is disposed on the rigid circuit board 500 and elevated by the spacer 600 , so that the rigid circuit board 500 can provide support for the light source 300 and / or the spacer 600 , which is beneficial to improving the assembly angle of the light source 300 .

[0065] In some optional embodiments, the camera module 200 and the light source 300 may share the same flexible circuit board 400 or the same rigid circuit board 500 .

[0066] Reference Figure 2 and Figure 9 According to some optional embodiments, at least a portion of the side of the light source 300 away from the camera module 200 is flush with the peripheral wall of the light-transmitting portion 120 away from the camera module 200. Exemplarily, the peripheral wall of the light-transmitting portion 120 away from the camera module 200 forms the peripheral wall of the front-end assembly.

[0067] This embodiment is beneficial to improving the compactness of the assembly of the light source 300 and the mounting base 100, reducing the radial space occupied by the light source 300 on the mounting base 100, thereby providing a larger layout space for the mounting cavity 101 for installing the instrument tube, which is beneficial for installing instrument tubes with larger diameters.

[0068] Reference Figure 5 and Figure 7 In some optional embodiments, at least a portion of the light-transmitting portion 120 is wrapped around the outer peripheral wall of the main body 110. In this embodiment, at least a portion of the light-transmitting portion 120 is wrapped around the outer peripheral wall of the main body 110, thereby improving the sealing performance of the front-end assembly, thereby preventing body substances from entering the front-end assembly, thereby protecting the light source 300, the camera module 200, and / or the circuit board.

[0069] It should be noted that some substances in the body are corrosive, such as gastric juice. In addition, it is also beneficial to prevent body dirt from entering the front-end assembly and contaminating the light source 300, camera module 200 and / or circuit board.

[0070] In some optional embodiments, the light-transmitting portion 120 is injection-molded to the main body 110. Alternatively, the light-transmitting portion 120 can be formed by a glue potting process. In some optional embodiments, the light-transmitting portion 120 can be formed by, but not limited to, injection molding with a photosensitive adhesive.

[0071] Reference Figure 2 and Figure 3 In some optional embodiments, the wall of the mounting cavity 101 is tangent to the sidewalls of the light source 300 and / or the camera module 200. For example, the mounting cavity 101 may be an elliptical cylindrical through-hole. Alternatively, the mounting cavity 101 may be a cylindrical through-hole. Therefore, this embodiment does not limit the specific shape of the mounting cavity 101.

[0072] In the above embodiment, the cavity wall of the installation cavity 101 is tangent to the side wall of the light source 300 and / or the camera module 200, which is beneficial to maximize the radial size of the installation cavity 101 in the front-end component.

[0073] In some optional embodiments, the front-end assembly includes two light sources 300. The mounting cavity 101 and the camera module 200 are distributed along a first direction of the main body 110. Along the first direction, the light source 300 is tilted toward a side close to the camera module 200. For example, the first direction is a radial direction of the front-end assembly. Optionally, the first direction can be Figure 9 The above embodiment is beneficial to improving the compactness of the distribution of the light source 300, the camera module 200 and the installation cavity 101, thereby increasing the radial size of the installation cavity 101 in the front end assembly to facilitate installation of an instrument tube with a larger diameter.

[0074] Secondly, the present application also provides an insertion portion. For example, the insertion portion can be used in an endoscope. In some optional embodiments, the insertion portion includes an instrument tube, which is disposed within the mounting cavity 101 of the mounting base 100. In some optional embodiments, the outer wall of the instrument tube is in contact with the inner wall of the mounting cavity 101.

[0075] The above embodiments have the same technical features and technical effects as the front-end components provided in this application, and will not be described in detail here.

[0076] In a third aspect, the present application further provides an endoscope. Exemplarily, the endoscope has the same technical features as the insertion portion provided in the present application and can achieve the same technical effects, which will not be described in detail here.

[0077] In some optional embodiments, the endoscope further includes an operating portion, and the proximal end of the insertion portion is connected to the operating portion so as to control the insertion portion to enter the body through the operating portion.

[0078] The endoscope in the embodiments of the present application may be a bronchoscope, a pyeloscope, an esophagoscope, a gastroscope, a colonoscope, an otoscope, a rhinoscope, a stomatoscope, a laryngoscope, a colposcope, a laparoscope, an arthroscope, etc. The embodiments of the present application do not impose any specific restrictions on the type of endoscope.

[0079] It should be noted that, in the present document, the terms "comprising", "comprises" or any other variant thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises a" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the recited element. Also, it is to be noted that the scope of the methods and apparatus of this application are not limited by the order of the steps or the sequence for performing the steps, as some steps can occur in different order or concurrently, and some steps can be skipped or added, such as described in alternative examples. Also, features described in relation to certain examples can be combined in other examples.

[0080] The above description is only specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered by the protection scope of the present application.

Claims

1. A front-end component, characterized in that: The invention is applied to an endoscope, wherein the endoscope comprises an instrument tube, the front end assembly comprises a mounting seat (100), a camera module (200) and a light source (300), the mounting seat (100) comprises a main body (110) and a light-transmitting portion (120), the main body (110) comprises a mounting cavity (101), the instrument tube is arranged in the mounting cavity (101), the camera module (200) is arranged in the main body (110), the light-transmitting portion (120) is arranged adjacent to the camera module (200), the light source (300) is injection-molded in the light-transmitting portion (120), and the light source (300) is arranged adjacent to the outer peripheral wall of the light-transmitting portion (120) away from the camera module (200), and at least a part of the light-transmitting portion (120) constitutes the outer peripheral wall of the front end assembly.

2. The front end assembly according to claim 1, characterized in that The viewing side of the camera module (200) protrudes from the light emitting side (310) of the light source (300), and / or, Along the direction from the distal end of the front-end component to the proximal end of the front-end component, the light-emitting side (310) of the light source (300) is inclined in a direction close to the camera module (200).

3. The front end assembly according to claim 2, characterized in that A normal line of a side of the light-emitting side (310) of the light source (300) adjacent to the camera module (200) is tangent to an edge of the camera module (200).

4. The front end assembly according to claim 2 or 3, characterized in that: The invention also includes a flexible circuit board (400), the light source (300) is arranged on the flexible circuit board (400), the main body (110) has a first positioning surface (111), and a side of the light source (300) away from the light-emitting side (310) or a side of the flexible circuit board (400) away from the light source (300) abuts against the first positioning surface (111).

5. The front end assembly according to claim 2 or 3, characterized in that: The front-end component further comprises a hard circuit board (500) and a spacer (600), wherein the spacer (600) is arranged on the hard circuit board (500), the spacer (600) has a second positioning surface (610), a side of the light source (300) away from the light-emitting side (310) is attached to the second positioning surface (610), and the light source (300) is connected to the hard circuit board (500).

6. The front end assembly according to any one of claims 1 to 3, characterized in that: At least a portion of a side of the light source (300) away from the camera module (200) is flush with an outer peripheral wall of a side of the light-transmitting portion (120) away from the camera module (200).

7. The front end assembly according to claim 6, characterized in that At least a portion of the light-transmitting portion (120) is covered by the outer peripheral wall of the main body portion (110); and / or, The light-transmitting portion (120) is injection-molded and connected to the main body portion (110).

8. The front end assembly according to claim 7, characterized in that The cavity wall of the installation cavity (101) is tangent to the side wall of the light source (300) and / or the camera module (200); and / or, The front-end assembly comprises two light sources (300), the mounting cavity (101) and the camera module (200) are distributed along a first direction of the main body (110), and along the first direction, the light source (300) is tilted toward a side close to the camera module (200).

9. An insertion portion, characterized in that: A front-end assembly comprising any one of claims 1 to 8.

10. An endoscope, characterized in that: The invention comprises the insertion portion according to claim 9.

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