Front end seat, front end assembly, insertion part and endoscope

Abstract

The utility model discloses a front end base, a front end assembly, an insertion portion and an endoscope, and relates to the field of medical instruments, the front end base is used for the endoscope, an installation cavity is arranged in the front end base, the installation cavity is communicated with the far end face of the front end base, the installation cavity is used for installing a camera module and an illumination module, and the side face of the installation cavity is open. At least one of the camera module and the lighting module is exposed. The camera module and the lighting module are located in the mounting cavity, it is avoided that a plurality of components are arranged in a plurality of cavities respectively, partition plates among the cavities can reduce the volume utilization rate of the front end base, the internal space of the front end base can be optimized due to the fact that the camera module and the lighting module are located in the same mounting cavity, and therefore when the lighting module and the camera module of the same specification are arranged, the volume utilization rate of the front end base is increased. The size of the front-end assembly can be smaller, and the trafficability of the front-end assembly is higher. The front end seat can be provided with a lighting module and a camera module which are larger in size. In addition, installation personnel can install the camera module and the lighting module at the same time, and assembling steps are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field especially relates to a front end seat, front end subassembly, insert part and endoscope. BACKGROUND

[0002] The endoscope is a kind of commonly used medical instrument, is the checking instrument that can directly enter human body natural duct, can provide sufficient diagnostic information for doctor to treat disease.The endoscope includes front end subassembly, and front end subassembly can enter human body through body cavity or surgical incision.The front end subassembly is provided with illumination module and camera module, illumination module illuminates in body cavity, camera module gathers the image information in cavity, and is transmitted back to the display device at outside, to facilitate doctor to observe the situation in body.

[0003] In order to improve the passability of insert part, the volume of front end subassembly is configured smaller.The volume and passability of front end subassembly can be influenced by camera module, illumination module and instrument tube, and its passability will also decline.This will also limit camera module, illumination module and instrument tube etc., such as unable to install larger size camera module, leading to unclear image information etc.The assembly difficulty of small volume front end subassembly will be higher, and assembly efficiency is greatly reduced. SUMMARY

[0004] The utility model discloses a front end seat, front end subassembly, insert part and endoscope to solve the technical problem existing in the related art.

[0005] The front end seat of the application is used for endoscope, and the front end seat is provided with an installation cavity, the installation cavity is communicated with the distal end face of the front end seat, the installation cavity is used for installing camera module and illumination module, and the side of the installation cavity is provided with an open mouth to expose at least one of the camera module and the illumination module.

[0006] To achieve the above object and other related purposes, the application provides a front end subassembly, which comprises the front end seat, the camera module and the illumination module as described above, and the camera module and the illumination module are arranged in the installation cavity.

[0007] To achieve the above object and other related purposes, the application provides an insert part, which comprises the front end subassembly as described above.

[0008] To achieve the above object and other related purposes, the application provides an endoscope, which comprises the insert part as described above.

[0009] The technical scheme applied in the utility model can achieve the following beneficial effects: the camera module and the lighting module are arranged in the installation cavity, multiple components are arranged in multiple cavities, the partition plate between the multiple cavities can reduce the volume utilization rate of the front end seat, and the arrangement in the same installation cavity can optimize the internal space of the front end seat.

[0010] In addition, through the open arrangement, at least one of the camera module and the instrument tube is exposed, which can eliminate the influence of the outer wall of the front end seat on the space in the installation cavity, further improve the specifications of the camera module and the lighting module, and facilitate the assembly operation of the installer, such as dispensing, to improve the installation efficiency and firmness. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0012] Figure 1 It is the structure schematic view of the front end seat shown in an exemplary embodiment of the application.

[0013] Figure 2 It is the structure schematic view of the front end seat shown in an exemplary embodiment of the application.

[0014] Figure 3 It is the structure schematic view of the front end seat shown in an exemplary embodiment of the application.

[0015] Figure 4 It is the structure schematic view of the front end seat shown in an exemplary embodiment of the application.

[0016] Figure 5 It is the structure schematic view of the front end seat shown in an exemplary embodiment of the application.

[0017] Figure 6 It is the structure schematic view of the front end seat shown in an exemplary embodiment of the application.

[0018] In the figure: 1, endoscope; 100, front end assembly; 110, front end seat; 111, mounting cavity; 1111, camera cavity; 1112, illumination cavity; 112, instrument lumen; 113, first opening; 114, second opening; 115, first stop portion; 116, second stop portion; 117, third opening; 118, third stop portion; 120, camera module; 130, illumination module; 140, instrument tube; 200, insertion part. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the utility model more clear, the technical scheme of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope protected by the utility model.

[0020] The terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, not to describe a particular order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second" and the like are generally of a kind, not limited to the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / ", generally indicates that the front and rear associated objects are in a "or" relationship.

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

[0022] The present application provides a front end seat 110, please refer to Figure 1 And Figure 2 , the front end seat 110 is used for endoscope 1. Further, the front end seat 110 is arranged in the front end assembly 100, and the front end assembly 100 can be applied to the distal end of the insertion part 200 of the endoscope 1. The insertion part 200 can have an active bending section, and the front end assembly 100 has different orientations and positions with the operation of medical personnel.

[0023] Please refer to Figure 1, the front end seat 110 can be an integrated injection molding structure, which can improve the structural strength of the front end seat 110, and the front end seat 110 can provide support force for the camera module 120 to improve the reliability of the front end assembly 100. Alternatively, in other cases, the front end seat 110 can be assembled from multiple components, which can be flexibly assembled to adapt to more complex camera modules 120.

[0024] In the embodiments of the present application, please refer to Figure 1 , the front end seat 110 is provided with a mounting cavity 111, and the mounting cavity 111 is communicated with the distal end surface of the front end seat 110. The insertion part 200 of the endoscope 1 includes a camera module 120 and an illumination module 130, the camera module 120 can collect image information in front of the front end seat 110, and the illumination module 130 can illuminate the front of the front end seat 110, so that the camera module 120 can collect clear image information.

[0025] Please refer to Figure 2 , the mounting cavity 111 is used for mounting the camera module 120 and the illumination module 130, that is, the camera module 120 and the illumination module 130 are in the same cavity, avoiding multiple components arranged in multiple cavities, and the partition plate between the multiple cavities will reduce the volume utilization rate of the front end seat 110. The arrangement of the same mounting cavity 111 can optimize the internal space of the front end seat 110, and then when the camera module 120 and the instrument tube 140 of the same specification are arranged, the volume of the front end assembly 100 of the present application can be smaller, and the passability is stronger. In other words, the same size of the front end seat 110 can set larger specification of the illumination module and the camera module.

[0026] Moreover, the installation personnel can simultaneously install the camera module 120 and the illumination module 130. For example, the camera module 120 and the illumination module 130 are connected in advance, and then they are put into the cavity of the front end seat 110 together. This arrangement can improve the assembly efficiency of the front end assembly 100 and reduce the assembly steps.

[0027] In the embodiments, please refer to Figure 2 and Figure 3 , the side of the mounting cavity 111 is open to expose at least one of the camera module 120 and the illumination module 130. In other words, the side opening arrangement can expose the camera module 120 or the illumination module 130 or both the camera module 120 and the illumination module 130, etc., and the present embodiment does not limit it. For example, as Figure 2As shown, the side of the mounting cavity 111 is provided with an exposed opening, which can expose the camera module 120. By means of the open setting, at least one of the camera module 120 and the instrument tube 140 is exposed, which can eliminate the influence of the outer wall of the front end seat 110 on the space in the mounting cavity 111, and when the camera module 120 and the instrument tube 140 of the same specification are set, the volume of the front end assembly 100 of the present application can be smaller. While the volume of the front end seat 110 remains unchanged, the open setting can reduce the interference of the side wall of the front end seat 110 on the specification of the camera module 120, further improving the volume of the camera module 120. Moreover, this setting also facilitates the assembly operation of the installer, such as dispensing, etc., improving the installation efficiency and firmness.

[0028] In addition, the open setting of the mounting cavity 111 can completely expose the side of the camera module 120 to the field of view of the assembler, which can clearly determine whether the camera module 120 is installed in place, and facilitate subsequent glue filling, improving the installation reliability and assembly efficiency of the assembler.

[0029] In the embodiments of the present application, please refer to Figure 2 The front end seat 110 can also include an instrument tube cavity 112 for mounting the instrument tube 140, which can be adapted to the instrument tube 140. For example, the instrument tube 140 is a hollow cylindrical structure, and the instrument tube cavity 112 can be configured as a cylindrical cavity, which can penetrate through opposite ends of the front end seat 110.

[0030] As can be understood, please refer to Figure 4 The mounting cavity 111 can include a camera cavity 1111 and an illumination cavity 1112 in communication with each other, the camera module 120 is installed in the camera cavity 1111 and forms the side wall of the illumination cavity 1112. In other words, the camera module 120 set in the camera cavity 1111 has the function of the cavity wall of the illumination cavity 1112, so that the camera module 120 can be limited with the illumination module 130. The instrument tube 140 has the ability to deform, and the instrument tube 140 can apply a force to the camera module 120, the direction of the force being opposite to or intersecting with the limiting action of the illumination module 130 on the camera module 120, to provide limiting action in different directions.

[0031] In one embodiment, please continue to refer to Figure 2The instrument lumen 112 is in communication with the mounting cavity 111. In an example, the instrument lumen 112 extends axially through the front end seat 110 and communicates radially with the camera cavity 1111, and the instrument lumen 112 can be located at a side of the camera module 120 away from the exposed opening of the camera cavity 1111. This can eliminate the partition between the instrument lumen 112 and the camera cavity 1111, reduce the restriction of the partition on the inner volume, and improve the specifications of both the instrument tube 140 and the camera module 120. In another example, the instrument lumen 112 is open at a side to expose the instrument tube 140. The exposed arrangement can make the installation of the instrument tube 140 tend to be visualized, and improve the installation efficiency of the endoscope 1.

[0032] In another case, the instrument lumen 112 is in communication with the mounting cavity 111, and the instrument lumen 112 is open at a side to expose the instrument tube 140. This arrangement can both reduce the restriction of the partition on the inner volume, improve the specifications of both the instrument tube 140 and the camera module 120, and make the installation of the instrument lumen 112 tend to be visualized, and improve the installation efficiency of the endoscope 1.

[0033] In the embodiments of the present application, please refer to Figure 3 and Figure 4 The mounting cavity 111 is open to form a first opening 113, and the instrument lumen 112 is open to form a second opening 114. In an example, a part of the camera module 120 can be arranged at the first opening 113, and a part of the instrument tube 140 can be arranged at the second opening 114. The instrument tube 140 and the camera module 120 can occupy the peripheral space of the front end seat 110, which can optimize the layout, and make the size of the camera module 120 and the instrument tube 140 further improved without increasing the volume of the front end seat 110, thereby optimizing the camera performance and image quality.

[0034] In a case, as shown in Figure 3 The first opening 113 and the second opening 114 both extend radially through the side wall of the front end seat 110 and extend axially to the distal end of the front end seat 110. The arrangement of the first opening 113 and the second opening 114 can make the camera module 120 and the illumination module 130 more easily access and be fixed at the required position without being hindered by the internal structure of the front end seat 110. At the same time, the side wall of the front end seat 110 in this arrangement does not block the field of view of the camera module 120 and the illumination module 130, ensuring that the position and size of the opening can meet the requirements of the camera module on the field of view, and avoiding the camera module 120 being arranged in a deeper area of the front end seat 110.

[0035] In another case, as shown in Figure 2As shown, the first opening 113 and the second opening 114 are oppositely arranged to expose the camera module 120 and the instrument tube 140 away from each other. Exemplarily, the camera module 120 and the instrument tube 140 can be arranged on the same diameter of the front end seat 110, and in addition to exposing the camera module 120 and the instrument tube 140 away from each other, it can ensure that the camera module 120 and the instrument tube 140 can occupy sufficient space, and improve the assembly effect of the camera module 120 and the instrument tube 140.

[0036] In another case, the first opening 113 and the second opening 114 both pass through the side wall of the front end seat 110 in the radial direction, and extend to the distal end of the front end seat 110 in the axial direction, and the first opening 113 and the second opening 114 are oppositely arranged. This can further optimize the layout of the front end seat 110 and improve the reliability of the front end seat 110.

[0037] In the embodiments of the present application, please refer to Figure 4 , the first end seat 110 is provided with a first stop portion 115, which is arranged between the instrument tube 140 and the illumination module 130, and the first stop portion 115 can provide radial limiting for the instrument tube 140. Further, as shown in Figure 2 , the first stop portion 115 can be formed in the instrument tube cavity 112. Exemplarily, the surface of the cavity wall forming the instrument tube cavity 112 is configured as an arc shape, which is arranged corresponding to the outer contour of the instrument tube 140 to constrain the radial movement of the instrument tube 140 in the front end seat 110. The first stop portion 115 can be arranged around the side of the illumination module 130 to form the cavity wall of the mounting cavity 111. The first stop portion 115 can limit the movement of the illumination module 130, and thus the first stop portion 115 has the functions of limiting the radial movement of the instrument tube 140 and limiting the relative movement of the illumination module 130, thereby improving the structural stability of the endoscope 1.

[0038] In another case, please refer to Figure 3 and Figure 4 , the front end seat 110 has a second stop portion 116, which is arranged corresponding to the first opening 113. Further, as shown in Figure 3As shown, the cavity wall of the front end seat 110 forms the first opening 113, and the second stop portion 116 is configured as a surface of the cavity wall close to the proximal end side of the front end seat 110. The camera module 120 abuts against the second stop portion 116, and the second stop portion 116 can provide axial positioning for the camera module 120. In other words, the second stop portion 116 abuts against the proximal end of the camera module 120, and the second stop portion 116 can provide axial support for the camera module 120. Meanwhile, the instrument tube 140 is installed in the instrument tube cavity 112, and the instrument tube 140 can abut against the camera module 120 in the radial direction. For the camera module 120, the instrument tube 140 and the second stop portion 116 can provide positioning in different directions, which can further improve the installation stability of the camera module 120.

[0039] In another case, the front end seat 110 has both the first stop portion 115 and the second stop portion 116, and the first stop portion 115 and the second stop portion 116 abut against the instrument tube 140 and the camera module 120 respectively to improve the structural stability, which will not be described in detail here. Further, on the basis that the instrument tube cavity 112 and the installation cavity 111 are in communication with each other, the first stop portion 115 and the second stop portion 116 can be connected to each other to improve the structural integrity and stability and reduce the number of structures.

[0040] Preferably, the outer contours of the instrument tube 140 and the camera module 120 are tangent to the circumference where the outer edge of the front end seat 110 is located. On the basis that the first opening 113 and the second opening 114 pass through the front end seat 110, the edges of the instrument tube 140 and the camera module 120 are arranged at the outer edge of the front end seat 110. When viewed from the side, the instrument tube 140 and the camera module 120 do not protrude from the surface of the front end seat 110, maintaining the flat appearance of the front end seat 110, and also avoiding the possibility that the protruding instrument tube 140 and camera module 120 will scratch the external skin or the cavity wall of the patient's body. At the same time, the edges of the instrument tube 140 and the camera module 120 are in close contact with the outer edge of the front end seat 110, which can make better use of the space inside the front end seat 110, ensuring that clear and complete image frames are captured without being hindered by the front end seat 110. Furthermore, the visualization degree for the assembler is further improved, facilitating the assembler to clearly observe the installation condition.

[0041] In the embodiments of the present application, please refer to Figure 5The front end seat 110 has a third opening 117 which penetrates the sidewall of the front end seat 110 and communicates with the installation cavity 111 and exposes the illumination module 130. Further, the illumination module 130 is installed in the illumination cavity 1112 and the third opening 117 communicates with the illumination cavity 1112. The third opening 117 can make the illumination module 130 partially or wholly exposed. Such exposure not only improves the visualization of the illumination, but also enables the assembly personnel to more intuitively observe the assembly of the illumination module 130, such as whether it is assembled in place or not, thereby improving the structural firmness. In addition, part of the illumination module 130 can be arranged at the third opening 117, i.e. the illumination module 130 can occupy the space of the third opening 117, eliminating the influence of the outer wall structure of the front end seat 110 on the volume of the illumination cavity 1112, and further improving the fitting specifications of the illumination module 130.

[0042] In one case, referring to Figure 5 The outer contour of the illumination module 130 is tangent to the circumference where the outer edge of the front end seat 110 is located. The side of the illumination cavity 1112 directly penetrates the front end seat 110, and the edge of the illumination module 130 is arranged at the outer edge of the front end seat 110. When observed from the side, the illumination module 130 does not protrude from the surface of the front end seat 110, maintaining the flatness of the appearance of the front end seat 110, and also avoiding that the protruding illumination module 130 scratches the external skin or the patient's body cavity wall. At the same time, the edge of the illumination module 130 closely abuts the outer edge of the front end seat 110, which can more likely utilize the space of the illumination cavity 1112, ensuring that the light can be fully and uniformly emitted without being hindered by the front end seat 110.

[0043] In the embodiment of the present application, referring to Figure 4 The front end seat 110 can further include a third stop portion 118, which can be a protrusion or a recess formed on the cavity wall of the illumination cavity 1112, or the surface of the cavity wall forming the third opening 117, etc., and the present embodiment is not limited thereto. The third stop portion 118 is arranged opposite to the illumination module 130, and the third stop portion 118 can provide axial support for the illumination module 130. The third stop portion 118 abuts the proximal end of the illumination module 130 along the axial direction of the front end seat 110. When the illumination module 130 is working, it can be subjected to forces and vibrations from various directions, and through the axial support of the third stop portion 118, these external forces and vibrations are effectively alleviated and dispersed. The risk of performance degradation or damage due to shaking or instability is reduced. At the same time, the third stop portion 118 provides an adhesive surface for bonding the illumination module 130, to improve the bonding firmness.

[0044] In the embodiment, referring to Figure 4At least part of the inner wall of the mounting cavity 111 is configured as an arc-shaped inner wall, which is adapted to abut against the end of the illumination module 130, so that the two sides of the end are spaced apart from the cavity wall of the mounting cavity 111. The arc-shaped inner wall abuts against the end of the illumination module 130. Exemplarily, the illumination module 130 can have a cuboid structure, and the end can be configured as one edge in the illumination module 130, which abuts against the arc-shaped inner wall, and at the same time, the two side surfaces form gaps between the inner wall of the illumination cavity 1112.

[0045] Further, the gaps can facilitate the subsequent gluing process. During the manufacturing process, the staff can uniformly apply glue in the gaps, thereby enhancing the bonding capacity between the illumination module 130 and the front end seat 110. The glue filled in the gaps not only increases the bonding area, but also makes the bonding effect more firm and stable. This design improves the overall quality of the product and also prolongs its service life.

[0046] To achieve the above object and other related objects, the present application provides a front end assembly 100, please refer to Figure 2 The front end assembly 100 comprises the front end seat 110 as described above, so that the insertion portion 200 has the beneficial effects of any of the above-mentioned solutions, which will not be repeated here. In addition, the front end assembly 100 further comprises a camera module 120 and an illumination module 130, which are arranged in the mounting cavity 111. The arrangement of the camera module 120 and the illumination module 130 in the same mounting cavity 111 can optimize the internal space of the front end seat 110, and then the front end seat 110 can be provided with larger volume illumination modules and camera modules, which will not be repeated here.

[0047] To achieve the above object and other related objects, the present application provides an insertion portion 200, please refer to Figure 6 The insertion portion 200 comprises the front end assembly 100 as described above. So that the insertion portion 200 has the beneficial effects of any of the above-mentioned solutions, which will not be repeated here.

[0048] To achieve the above object and other related objects, the present application provides an endoscope 1, please refer to Figure 6 The endoscope 1 comprises the insertion portion 200 as described above. So that the endoscope 1 has the beneficial effects of any of the above-mentioned solutions, which will not be repeated here. Among them, the endoscope 1 can be a bronchoscope, a nephroscope, an esophagoscope, a gastroscope, a colonoscope, an otoscope, a nasoscope, an oral mirror, a laryngoscope, a colposcope, a laparoscope, an arthroscope, etc. The present application does not make specific limitations on the type of endoscope 1 and the implementation scene of endoscope 1.

[0049] It should be noted that, in this document, the terms "comprises", "comprising", or any other variation 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. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0050] Further, it is to be understood that the scope of the methods and apparatus of the present embodiments are not limited by the order of execution of the functions, as described in the examples, but can include performing the functions in other orders, or substantially concurrently, or in reverse order, such as described in the examples, and can also include adding, omitting, or combining various steps, and the like. Further, features described in relation to certain examples can be combined in other examples.

[0051] The above only describes the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered by the protection scope of the present application.

Claims

1. A front end mount for an endoscope, characterized by, The front end seat is internally provided with a mounting cavity, the mounting cavity is communicated with a distal end face of the front end seat, the mounting cavity is used for mounting a camera module and an illumination module, and a side face of the mounting cavity is open to expose at least one of the camera module and the illumination module.

2. The front end housing of claim 1, wherein, The front end seat further comprises an instrument lumen, and the instrument lumen is used for mounting the instrument tube. The instrument lumen is communicated with the mounting cavity; and / or a side face of the instrument lumen is open to expose the instrument tube.

3. The front end housing of claim 2, wherein, The mounting cavity is open to form a first opening, and the instrument lumen is open to form a second opening: The first opening and the second opening both penetrate a side wall of the front end seat along a radial direction and extend to a distal end of the front end seat along an axial direction; The first opening and the second opening are oppositely arranged to expose one side of the camera module and the instrument tube away from each other.

4. The front end housing of claim 3, wherein, The front end seat is internally provided with a first stop portion, the first stop portion is arranged between the instrument tube and the illumination module, the first stop portion can provide radial limiting for the instrument tube, and the first stop portion can surround a side of the illumination module to form a cavity wall of the mounting cavity; The front end seat has a second stop portion, the second stop portion is correspondingly arranged in the first opening, the camera module abuts against the second stop portion, the second stop portion can provide axial limiting for the camera module, and the instrument tube can abut against the camera module along a radial direction; The outer contour of the instrument tube and the camera module is tangent to a circumference where an outer edge of the front end seat is located.

5. The front end housing of claim 1, wherein, The front end seat has a third opening, the third opening penetrates a side wall of the front end seat, is communicated with the mounting cavity, and exposes the illumination module; The front end seat is configured as an integrated injection molding structure; The outer contour of the illumination module is tangent to the circumference where the outer edge of the front end seat is located.

6. The front end housing of claim 5, wherein, The front end seat further comprises a third stop portion, the third stop portion is oppositely arranged with the illumination module, and the third stop portion can provide axial support for the illumination module; At least part of an inner wall of the mounting cavity is configured as an arc-shaped inner wall, the arc-shaped inner wall is adapted to abut against an end portion of the illumination module to make two sides of the end portion spaced apart from cavity walls of the mounting cavity.

7. A front end module characterized by The front end seat, the camera module, and the illumination module are arranged in the mounting cavity.

8. The front end assembly of claim 7, wherein, The mounting cavity comprises a camera cavity and an illumination cavity which are communicated with each other, the camera module is mounted in the camera cavity and forms a side wall of the illumination cavity, and the camera module can be limitedly matched with the illumination module.

9. An insertion portion characterized by, The front end assembly comprises the front end seat, the camera module, and the illumination module.

10. An endoscope characterized by comprising: The insertion portion comprises the front end assembly.

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