A front end mount, insertion portion, and endoscope

Abstract

The application provides a front end seat, an insertion part and a endoscope, relates to the technical field of endoscopes, and is characterized in that two adjacent wall bodies are connected to each other, a corner structure is formed at the connection between the two wall bodies, a recessed part is further arranged between the two adjacent wall bodies, the recessed part is recessed in the direction from the outside to the inside of the front end seat, and the recessed part extends from the proximal end to the distal end of the front end seat. The side wall of the front end seat is provided with at least two wall bodies, the adjacent wall bodies are connected to each other and form a corner structure at the connection. Each wall body is adapted to a corresponding functional component, so that the overall outer diameter of the front end seat is reduced, and the passing performance of the endoscope during insertion is improved. Meanwhile, the corner structure can reinforce the structure of the front end seat, and the outer circumferential surface of the front end seat is further provided with a recessed part. Through cooperation of the recessed part and the corner structure, the outer diameter of the front end seat can be further reduced without reducing the structural strength of the front end seat, the friction, jamming and interference between the insertion part and the wall of the human body cavity are reduced, and the insertion passing performance is further optimized.

Description

Technical Field

[0001] This application relates to the field of endoscope technology, and more particularly to a front end seat, an insertion part, and an endoscope. Background Technology

[0002] With the continuous development of medical technology, endoscopes have been widely used in the diagnosis and treatment of diseases. An endoscope can be inserted into the human body through its insertion section via natural passages (such as the mouth) to assist doctors in observing the patient's lesions. The insertion section of the endoscope can be controlled with the help of the endoscope handle. The insertion section of the endoscope typically integrates a camera, illumination source, instrument channel, and other structures to acquire internal image information or inject treatment media.

[0003] In related technologies, when the insertion part of the endoscope enters the body's natural cavities or narrow surgical channels, its overall outer diameter is relatively large, which makes it prone to significant friction and interference with the inner wall of the cavity, resulting in poor passage of the insertion part. Summary of the Invention

[0004] The purpose of this application is to provide a front-end seat, an insertion part, and an endoscope to alleviate or solve the aforementioned technical problems existing in the prior art.

[0005] In a first aspect, embodiments of this application provide a front end seat for an endoscope. The front end seat is used to accommodate functional components. The side wall of the front end seat includes at least two walls. The two adjacent walls are connected to each other and form a corner structure at the connection between them. A recess is also provided between the two adjacent walls. The recess is recessed in the direction from the outside to the inside of the front end seat and extends from the proximal end to the distal end of the front end seat.

[0006] Secondly, embodiments of this application provide an insertion part, which includes a front end seat as described in the first aspect.

[0007] Thirdly, embodiments of this application provide an endoscope, which includes an insertion portion as described in the second aspect.

[0008] The technical solution adopted in this application can achieve the following beneficial effects: the front end is used to accommodate functional components, which can be cameras, lighting devices, or instrument tubes, etc., without limitation. As the insertion part is continuously extended into the human body, the front end can enter the body's cavities and organs.

[0009] Compared to existing technologies, the front end seat of this application embodiment has at least two walls on its sidewall, with adjacent walls connecting to each other and forming a corner structure at the connection point. Each wall can be adapted to the corresponding functional components, thereby reducing the overall outer diameter of the front end seat and improving the insertion performance of the endoscope. Simultaneously, the corner structure provides structural reinforcement to the front end seat, and a recess is also provided on the outer circumferential surface of the front end seat. Through the combination of the recess and the corner structure, this design can further reduce the outer diameter of the front end seat without significantly reducing its structural strength, thereby reducing friction and jamming interference between the insertion part and the wall of the human body cavity, and further optimizing insertion passability. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the structure of an endoscope shown in an exemplary embodiment of this application; Figure 2 This is a schematic diagram of the structure of the insertion part shown in an exemplary embodiment of this application; Figure 3 This is a schematic diagram illustrating the structure of the front-end mount, camera, and lighting element in an exemplary embodiment of this application; Figure 4 This is a schematic diagram of the front-end mount structure shown in an exemplary embodiment of this application; Figure 5 yes Figure 4 Enlarged view of point a; Figure 6 yes Figure 4 Enlarged view of point b; Figure 7 This is a schematic diagram of the front-end mount, camera, and lighting components from another perspective, illustrating an exemplary embodiment of this application. Figure 8 yes Figure 7 Enlarged view of point c; Figure 9 This is a schematic diagram of the front-end mount from another perspective, illustrating an exemplary embodiment of this application; Figure 10 This is a cross-sectional view of the front end of the device, as illustrated in an exemplary embodiment of this application.

[0012] In the diagram: 1. Endoscope; 100. Front mount; 110. Recess; 120. Wall; 121. Corner structure; 130. Receiving cavity; 131. Camera mounting position; 132. Illumination mounting position; 133. Corner structure; 134. Guide channel; 135. Restraint part; 140. Instrument channel; 150. Reinforcing protrusion; 200. Functional component; 210. Camera; 220. Illumination element; 300. Insertion part. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0014] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0015] In the various embodiments of this application, "near end" and "far end" refer to the distance of each component from the user in the usage environment. The end closer to the user is designated as the "near end", and the end farther from the user is designated as the "far end".

[0016] This application provides a front-end connector 100, please refer to... Figure 1 The front end 100 is used for the endoscope 1. The endoscope 1 includes an insertion part 300, which is used to extend into the body's natural cavities or narrow surgical channels to achieve internal observation or diagnostic and treatment operations.

[0017] Please see Figure 2The front end 100 is used to accommodate the functional component 200, which can be a camera 210, an illumination element 220, or an instrument tube, etc., without limitation. As the insertion part 300 extends into the human body, the front end 100 can enter the body's cavities and organs, and the camera 210 and illumination element 220 can also be positioned accordingly. The illumination element 220 illuminates the front end 100, and the camera 210 collects image information from the front for medical personnel to observe.

[0018] Please see Figure 3 The front end seat 100 has at least two walls 120 on its sidewalls. The number of walls 120 can be two, three, or more, and is not limited. Adjacent walls 120 are interconnected, forming a corner structure 121 at their connection point. For example, the functional component 200 can be a camera 210, which can have a cuboid structure. The walls 120 can have a planar structure, and at least two walls 120 can be provided corresponding to multiple outer surfaces of the camera 210. Compared to the existing circular front end seat 100, the adjacent walls 120 of this embodiment are interconnected and form a corner structure 121 at their connection point, allowing each wall 120 to be adapted to the corresponding functional component 200, thereby reducing the overall outer diameter of the front end seat 100 and improving the insertion performance of the endoscope 1.

[0019] Please see Figure 3 A recess 110 is provided between two adjacent walls 120. The recess 110 is recessed from the outside to the inside along the front end seat 100, extending from the proximal end to the distal end of the front end seat 100. Compared with the existing smooth arc structure, this corner structure 121 can provide structural reinforcement for the front end seat 100, so as to bear the external forces on the front end seat 100 in the axial or radial direction, and improve the load capacity and structural stability of the front end seat 100. The outer peripheral surface of the front end seat 100 is also provided with a recess 110. Through the cooperation of the recess 110 and the corner structure 121, this setting can further reduce its outer diameter without significantly reducing the structural strength of the front end seat 100, reducing the friction and jamming interference between the insertion part 300 and the wall of the human body cavity, and further optimizing the insertion passage.

[0020] In one configuration, a recess 110 is formed at the end of the wall 120 near the corner structure 121, with the recess 110 and corner structure 121 being adjacent to each other. This configuration allows the corner structure 121 to compensate for the strength of the recess 110. Through their combined action, the overall radial dimension can be reduced without sacrificing the overall structural strength of the front end seat 100, thus reducing the outer diameter of the endoscope 1 insertion portion 300, lowering the contact resistance between the insertion portion 300 and the inner wall of the cavity when it passes through the human body cavity, and improving the passage performance of the insertion operation.

[0021] For further details, please refer to Figure 4 and Figure 5 The sidewalls of the front-end seat 100 include a first wall and a second wall, which are connected. A corner structure 121 is formed between the first and second walls. A first sub-recess is provided at the end of the first wall near the second wall, and a second sub-recess is provided at the end of the second wall near the first wall. The first and second sub-recesses are adjacent to the corner structure 121. The corner structure 121 provides structural compensation for the first and second sub-recesses on both sides. The first and second sub-recesses can maximize the reduction of the cross-sectional area of ​​the front-end seat 100 to improve the passability of the front-end seat 100. The symmetrical arrangement of the recesses on both sides of the corner structure 121 can also balance the force on the wall 120, further reducing insertion friction and optimizing the cavity passage capability under the premise of stable structural strength.

[0022] In another configuration, the recess 110 is formed in at least a portion of the corner structure 121. This arrangement allows the recess 110 to be formed in a localized area of ​​the corner structure 121. The bent configuration of the corner structure 121 itself ensures its load-bearing capacity, offsetting the strength reduction caused by the recess 110, resulting in greater structural strength with a smaller volume. This simultaneously ensures the structural strength and accessibility of the endoscope 100. The combined structure of the corner structure 121 and the recess synchronously compresses the radial profile of the endoscope 100, reducing frictional interference between the endoscope and the inner wall of the human cavity, and improving the smoothness of endoscope insertion. Preferably, the recess 110 is formed on the outer surface of the corner structure 121, which can alleviate or eliminate the convexity of the corner structure 121, preventing sharp structures on the outer wall of the endoscope 100, ensuring a smooth and continuous outer periphery without sharp edges, and preventing scratches to internal organs or the wall of the passage.

[0023] In the embodiments of this application, please refer to Figure 6 The outer surface of the wall 120 is raised to form a reinforcing protrusion 150. The recess 110 and the reinforcing protrusion 150 can be integrally formed. For example, the front end seat 100 can be integrally injection molded, simultaneously forming the recess 110 and the reinforcing protrusion 150. The reinforcing protrusion 150, which protrudes outwardly and is integrally formed on the outer surface of the wall 120, can increase the local cross-sectional thickness of the wall 120, compensate for the decrease in strength caused by the thinning of the wall 120 due to the recessed structure, improve the sidewall's resistance to compression and bending, and ensure the overall structural rigidity of the front end seat 100 even with a reduced outer diameter, thus preventing deformation during insertion under stress.

[0024] Furthermore, both the inner and outer surfaces of the wall 120 are curved surfaces. These curved surfaces can be circular, ellipsoidal, hyperboloidal, or other irregular curved surfaces, without limitation. The inner and outer surfaces are correspondingly arranged. The inner and outer surfaces of the wall 120 adopt corresponding curved configurations, making the shape of the wall 120 correspondingly curved. The curved outer wall can disperse external contact pressure and improve the bending strength of the sidewall. At the same time, the curved inner surface can widen the internal assembly space. While maintaining the structural load-bearing capacity of the wall 120 or improving its structural strength, this arrangement can reserve a larger installation area for the internal functional components 200, accommodating larger functional components 200 without increasing the overall outer diameter of the front-end base 100.

[0025] In one implementation, please refer to Figure 4 The number of reinforcing protrusions 150 and recesses 110 is multiple, such as two, three or more, and is not limited. At least one recess 110 is provided between two adjacent protrusions. This arrangement ensures the structural strength of the front seat 100 at all points, and the recesses 110 continuously reduce the local outer diameter of the outer peripheral surface of the front seat 100, further reducing the contact area and frictional resistance between the distal end of the insertion part 300 and the inner wall of the human cavity, thus improving the passability of the front seat 100. Simultaneously, this alternating arrangement makes the outer peripheral surface contour of the front seat 100 more regular, reducing sharp edges and corners, minimizing scratching and irritation to the mucous membrane of the human cavity, and improving safety during use.

[0026] In the embodiments of this application, please refer to Figure 6 On the same wall 120, recesses 110 are provided on both opposite sides of the reinforcing protrusion 150. For example, the recesses 110 may include a third sub-recess and a fourth sub-recess, which are located on opposite sides of the corresponding reinforcing protrusion 150 on the same wall 120. Furthermore, the third and fourth sub-recesses are symmetrically arranged on both sides of the corresponding reinforcing protrusion 150, so that clearance space is formed on both sides of the reinforcing protrusion 150, further reducing the local size of the outer periphery of the reinforcing protrusion 150 and improving passability. The symmetrical arrangement of the third and fourth sub-recesses makes the reinforcing protrusion 150 more evenly stressed, preventing the reinforcing protrusion 150 from deforming or falling off due to excessive stress on one side. This makes the outer peripheral surface of the front seat 100 more symmetrical and regular, reduces jamming during insertion, and makes the distal end of the insertion part 300 move more smoothly in the cavity, further optimizing the overall aesthetics and structural symmetry of the front seat 100.

[0027] Preferably, the outer contours of both the recess 110 and the reinforcing protrusion 150 are rounded. The rounded outer contours eliminate sharp edges between the recess 110 and the reinforcing protrusion 150, preventing sharp structures from scratching or damaging the mucous membranes of body cavities, thus improving safety and patient comfort. The rounded structure also distributes stress, reducing stress concentration and preventing the recess 110 and the reinforcing protrusion 150 from cracking or breaking due to excessive stress.

[0028] Please see Figure 6 The ratio of the central angle between the reinforced protrusion 150 and the recess 110 is 3 to 5 times, such as 3, 4, or 5 times, without limitation. This setting ensures that the reinforced protrusion 150 has sufficient volume and area for effective structural reinforcement, while ensuring that the recess 110 has sufficient clearance, thereby reducing the outer diameter and improving maneuverability. The ratio of the radius of curvature between the reinforced protrusion 150 and the recess 110 is 0.3 to 0.5 times, such as 0.3, 0.4, or 0.5 times, without limitation. This setting allows for a smooth transition of the arc contour, further reducing friction and preventing excessive curvature that would result in insufficient clearance for the recess 110 and poor reinforcement of the reinforced protrusion 150, or excessive curvature that would lead to stress concentration. This ensures that the front end seat 100 achieves a balance between structural strength, maneuverability, and operational safety.

[0029] In the embodiments of this application, please refer to Figure 7 The front end 100 has a receiving cavity 130 and an instrument channel 140. The receiving cavity 130 is used to install the functional component 200, and the instrument channel 140 is used to communicate with the instrument tube. A recess 110 is formed in the wall 120 of at least one of the receiving cavity 130 and the instrument channel 140. For example, in one embodiment, please refer to... Figure 4 The recessed portion 110 and the reinforcing protrusion 150 are both disposed in at least a portion of the wall 120 of the receiving cavity 130 and located on the side of the receiving cavity 130 away from the instrument channel 140. This arrangement can avoid affecting the structure of the instrument channel 140, strengthen the wall 120 of the receiving cavity 130 away from the instrument channel 140, prevent this part from deforming due to force, and reduce the local outer diameter of the outer side of the receiving cavity 130 while ensuring that the instrument channel 140 can normally connect to the instrument tube, thereby improving the passage of the distal end of the insertion part 300.

[0030] In another embodiment, both the recess 110 and the reinforcing protrusion 150 are disposed on at least a portion of the wall 120 of the instrument channel 140 and located on the side of the instrument channel 140 away from the receiving cavity 130. While ensuring sufficient installation space for the functional components 200 in the receiving cavity 130, the outer shape of the instrument channel 140 is optimized, reducing its outer diameter to minimize frictional interference between the instrument channel 140 and the inner wall of the human body cavity. This strengthens the wall 120 of the instrument channel 140 on the side away from the receiving cavity 130, preventing deformation of the instrument channel 140 due to instrument passage and cavity compression, and ensuring smooth instrument passage.

[0031] In another embodiment, there are multiple recesses 110 and reinforcing protrusions 150. At least a portion of the recesses 110 and at least a portion of the reinforcing protrusions 150 are disposed in at least a portion of the wall 120 of the receiving cavity 130, and the remaining portions are disposed in at least a portion of the wall 120 of the instrument channel 140. This allows for comprehensive optimization of the outer peripheral surface of the front end seat 100, resulting in a more uniform reduction in outer diameter, reducing the overall frictional resistance between the distal end of the insertion part 300 and the inner wall of the cavity, distributing the reinforcing structure, avoiding local stress concentration, further improving the overall structural stability of the front end seat 100, adapting to the design requirements of endoscopes 1 of different specifications, and balancing the dual requirements of installing the functional components 200 of the receiving cavity 130 and ensuring smooth use of the instrument channel 140.

[0032] Please see Figure 7 The receiving cavity 130 has a camera mounting position 131 and an illumination element mounting position 132. The camera mounting position 131 is used to mount the camera 210 of the functional component 200, and the illumination element mounting position 132 is used to mount the illumination element 220 of the functional component 200. At least one of the camera mounting position 131 and the illumination element mounting position 132 is provided with a corner structure 133, which corresponds to the corner structure 121. It should be noted that the corner structure 133 may be formed on the cavity wall of the receiving cavity 130. Furthermore, the corner structure 133 may be the connection between two adjacent inner wall surfaces of the receiving cavity 130, and the corner structure 133 may correspond to the edge of the camera 210 or the illumination element 220. For example, as... Figure 8 As shown, the corner structure 133 is set at the camera mounting position 131, and it is set to correspond to the edge of the camera 210. This setting makes the corner structure 133 fit the outer periphery of the camera 210, making full use of the idle assembly space inside the corner structure 121, avoiding the camera 210 and the lighting component 220 from occupying additional radial space after assembly, and working together with the recessed part 110 on the outer side of the front seat 100 to compress the overall outer diameter.

[0033] Furthermore, the sidewalls of existing camera mounting locations are prone to stress concentration under load, leading to cracking and deformation. Please refer to [link / reference]. Figure 8The corner structure 121 of this application is correspondingly set at the corner structure 133. This setting can make up for the strength defects at the corner structure 133, strengthen the rigidity and impact resistance of the corner structure 133, prevent the corner structure 133 from being damaged due to squeezing or assembly deviation during the installation of the camera 210, and also prevent the corner structure 133 from being deformed when the endoscope 1 is used, thereby ensuring the stability of the installation of the camera 210, preventing the camera 210 from shifting or loosening, ensuring clear imaging and stable field of view, while not occupying the installation space of the camera 210 and not affecting the normal operation of the camera 210.

[0034] In the embodiments of this application, please refer to Figure 6 and Figure 9 The front-end base 100 also has a conductive channel 134, which is interconnected with the camera mounting position 131. The conductive channel 134 and the camera mounting position 131 are arranged sequentially along the proximal to distal direction of the front-end base 100. The conductive channel 134 can be used to pass through cables or accommodate the camera 210, etc. The cables can power the camera 210 and the lighting element 220, and transmit the information collected by the camera 210 to external devices for use by medical personnel.

[0035] Please see Figure 6 A corner structure 133 is disposed on the inner wall of the camera mounting position 131. The corner structure 133 extends to the proximal end face of the front end seat 100 through the guide channel 134. In the circumferential direction of the front end seat 100, the corner structure 133 can limit and constrain the camera 210 located in the camera mounting position 131. The corner structure 133 enables precise positioning and movement guidance of the camera 210, preventing circumferential displacement or loosening of the camera 210 during installation or use. The corner structure 121 and the recess 110 corresponding to the corner structure 133 can both extend to the proximal end of the front end seat 100, so that the volume of the front end seat 100 can be reduced at all points.

[0036] Please see Figure 9 and Figure 10The inner wall of the receiving cavity 130 is provided with a restraining part 135, which extends to the camera mounting position 131. The restraining part 135 forms the cavity wall of at least one of the guiding channel 134 and the camera mounting position 131. The restraining part 135 can limit and restrain the camera 210 located in the camera mounting position 131, so that the camera 210 can only move along the axial direction of the front end seat 100 into the guiding channel 134. The guiding channel 134 corresponds axially to the camera mounting position 131, ensuring that the cable of the camera 210 can extend through the guiding channel 134 to the proximal end of the insertion part 300. The restraining part 135 can limit and guide the camera 210, which can not only prevent the camera 210 from circumferentially shifting or loosening during assembly and use, and stabilize the imaging angle of the camera 210, but also guide the camera 210 axially into the guiding channel 134, making it convenient for staff to complete assembly and debugging work such as focal length and installation position. The restraint part 135 extends to the distal end face of the front end seat 100, which can further restrain and fix the camera 210, resist the displacement of the camera 210 caused by external forces, and ensure the continuous, stable and reliable imaging operation of the endoscope 1. As a preferred solution, the corner structure 133 extends from the restraint part 135 to the distal end face of the front end seat 100. The camera 210 can be guided and limited by the corner structure 133 from the insertion stage, further reducing the risk of displacement caused by external force disturbance and continuously maintaining the stable imaging performance of the endoscope 1.

[0037] This application embodiment also provides an insertion part 300, please refer to... Figure 1 The insertion part 300 may include the front end seat 100 as described above. This gives the insertion part 300 the beneficial effects of any of the aforementioned solutions, which will not be elaborated further here.

[0038] This application also provides an endoscope 1, please refer to... Figure 1 The endoscope 1 may include the insertion portion 300 as described above. This gives the endoscope 1 the beneficial effects of any of the aforementioned solutions, which will not be elaborated further here.

[0039] In this application embodiment, the endoscope 1 may be a bronchoscope, pyeloscope, esophagoscope, gastroscope, colonoscope, otoscope, rhinoscope, oral endoscope, laryngoscope, colposcope, laparoscope, arthroscope, etc. This application embodiment does not specifically limit the type of endoscope 1.

[0040] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0041] Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

[0042] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. A front-end mount for an endoscope, characterized in that, The front end is used to accommodate a functional component (200). The sidewall of the front end includes at least two walls (120), two adjacent walls (120) are connected to each other, and a corner structure (121) is formed at the connection between them. A recess (110) is provided between two adjacent wall bodies (120). The recess (110) is recessed in the direction from the outside to the inside along the front end seat. The recess (110) extends from the proximal end to the distal end of the front end seat.

2. The front-end mount according to claim 1, characterized in that, The recess (110) is formed at the end of the wall (120) near the corner structure (121), and the recess (110) is disposed adjacent to the corner structure (121); And / or, the recess (110) is formed on at least a portion of the corner structure (121).

3. The front-end mount according to claim 2, characterized in that, The sidewall of the front end seat includes a first wall and a second wall, the first wall and the second wall are connected, the corner structure (121) is formed between the first wall and the second wall, the first wall is provided with a first sub-recess at the end near the second wall, the second wall is provided with a second sub-recess at the end near the first wall, and the first sub-recess and the second sub-recess are provided adjacent to the corner structure (121).

4. The front-end mount according to claim 1, characterized in that, The outer surface of the wall (120) is provided with protrusions to form a reinforcing protrusion (150).

5. The front-end mount according to claim 4, characterized in that, The inner and outer surfaces of the wall (120) are both arc surfaces, and the inner and outer surfaces are respectively provided; And / or, the number of the reinforcing protrusions (150) and the recesses (110) is multiple, and at least one recess (110) is provided between two adjacent protrusions.

6. The front-end mount according to claim 4, characterized in that, On the same wall body (120), the recesses (110) are provided on both sides of the reinforcing protrusions (150). And / or, the outer contours of the recess (110) and the reinforcing protrusion (150) are both arcs, the ratio of the central angle between the reinforcing protrusion (150) and the recess (110) is 3 to 5 times, and the ratio of the radius of curvature between the reinforcing protrusion (150) and the recess (110) is 0.3 to 0.5 times.

7. The front-end mount according to claim 2, characterized in that, The front end seat has a receiving cavity (130) and an instrument channel (140). The receiving cavity (130) is used to install the functional component (200), and the instrument channel (140) is used to connect the instrument tube. The recess (110) is formed in the wall (120) of at least one of the receiving cavity (130) and the instrument channel (140).

8. The front-end mount according to claim 7, characterized in that, The receiving cavity (130) has a camera mounting position (131) and an illumination mounting position (132). The camera mounting position (131) is used to mount the camera (210) of the functional component (200), and the illumination mounting position (132) is used to mount the illumination component (220) of the functional component (200). At least one of the camera mounting position (131) and the illumination mounting position (132) is provided with a corner structure (133), which corresponds to the corner structure (121).

9. An insertion part, characterized in that, The insertion portion includes the front end seat as described in any one of claims 1-8.

10. An endoscope, characterized in that, The endoscope includes the insertion portion as described in claim 9.

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