Endoscope insertion head structure, endoscope and assembly method

Abstract

The present invention discloses a head end structure of an endoscope insertion part, an endoscope and an assembly method, belonging to the technical field of endoscopes, the head end structure includes a head end seat, the head end seat includes a first connection seat and a second connection seat, the first connection seat is provided with an installation space for installing a light source module, a chip module and a lens module; the second connection seat is provided with a water vapor channel, a secondary water supply channel and an instrument channel; one of the first connection seat and the second connection seat is provided with a card slot on the side, and the other is provided with a card convex on the side, the card slot and the card convex are adapted, the first connection seat and the second connection seat are matched so that the card convex is embedded in the card slot, and at the same time, the card slot and the card convex serve as anti-rotation restraints to prevent the first connection seat and the second connection seat from rotating relative to each other, the endoscope includes the head end structure, and the assembly method is applicable to the head end structure. The structural design of this scheme can effectively improve the assembly quality and efficiency of the head end structure of the endoscope insertion part.

Description

Technical Field

[0001] The present invention relates to the technical field of endoscopes, and in particular to an endoscope insertion portion head structure, an endoscope and an assembly method. Background Art

[0002] Endoscopes are currently widely used in the medical industry and serve as an important diagnostic and treatment tool. Take the upper gastrointestinal endoscope as an example. When used, it is inserted into the human body from the mouth, and the camera module at the tip (distal end) of the insertion part is used to observe and treat the inside of the human body. In the prior art, the diameter of the insertion part of the endoscope is limited by the size of the channel in the use environment and is not suitable for being set to have a larger outer diameter. Otherwise, it will encounter greater resistance during the insertion process, and it is easy to be squeezed and scratched when bending, increasing the patient's stress response. When the diameter of the insertion part is too small, there are problems including causing the instrument channel size inside it to be smaller, and the appearance of a design that cancels its auxiliary water supply function. At the same time, the smaller instrument channel size means that only surgical instruments of a specific size and type can pass through, which puts higher requirements on the surgical instruments inserted into the instrument tube, and there is a situation where tissue cannot be grasped and cleaned at the same time.

[0003] In the prior art, the head end structure of the insertion part includes a head end seat, an imaging module, a chip module, a light source module, an instrument channel, a water vapor channel and an auxiliary water supply channel. In order to achieve a small-size design of the head end structure of the insertion part, bonding, screw locking and other methods are mainly used to achieve fixed assembly of various components. At the same time, due to the small size of the components, the size of the fasteners (such as screws) is also small, and the head end structure of the insertion part includes many types of components. Whether it is fixed with fasteners or glue, there is a problem of low assembly efficiency from the perspective of component size, fastener size, and glue curing time.

[0004] In the prior art, since the endoscope needs to undergo high-level disinfection or sterilization after use, there are high requirements for the sealing of the head end structure of the insertion part during assembly. Generally, a sealing inspection operation is performed after the head end cover (the last component assembled in the assembly process) is assembled. If the manually applied glue has insufficient sealing, a repair operation is required to meet the sealing requirements. The repair process involves disassembling parts, removing glue, and reassembling parts. The repair process will further reduce the assembly efficiency of the head end structure.

[0005] In the prior art, due to high requirements on the optical performance of the imaging module, an optical inspection operation is generally performed after the head end seat is assembled. If the set requirements are not met, there is also a problem of rework.

[0006] Regarding the structural design of the head end of the insertion part of the endoscope, including the technical solution provided by the patent document with patent application number CN202321860599.7, in which the channel cavity, imaging cavity and lighting cavity on the head end seat are arranged to be interconnected, so as to reduce the size of the head end seat and reduce the discomfort of the patient when using endoscopic treatment; including the technical solution provided by the patent document with patent application number CN202420236229.4, in which the number of parts of the head end seat is reduced by arranging the connecting head and the head end seat to be integrally formed, so as to simplify the processing process, improve processing efficiency, reduce bonding and welding processes, and ensure sealing and connection reliability.

[0007] The tip structure of the endoscope insertion part is an important structure on the endoscope, and its related design directly affects the patient's usage experience and performance reliability. Therefore, it is necessary to further optimize the tip structure of the endoscope insertion part. Summary of the invention

[0008] In order to further optimize the endoscope insertion head structure, the present invention provides an endoscope insertion head structure, an endoscope and an assembly method. The structural design of this solution can effectively improve the assembly quality and efficiency of the endoscope insertion head structure.

[0009] In view of the above problems, the present invention provides an endoscope insertion portion head end structure, an endoscope and an assembly method to solve the problems through the following technical points: an endoscope insertion portion head end structure, comprising a head end seat, the head end seat comprising a first connecting seat and a second connecting seat, the first connecting seat being provided with an installation space for installing a light source module, a chip module and a lens module; the second connecting seat being provided with a water vapor channel, an auxiliary water supply channel and an instrument channel;

[0010] One of the first connecting seat and the second connecting seat has a card slot on its side, and the other has a card protrusion on its side. The card slot is adapted to the card protrusion, and the first connecting seat and the second connecting seat are matched so that the card protrusion is embedded in the card slot. At the same time, the card slot and the card protrusion serve as anti-rotation restraints to prevent the first connecting seat and the second connecting seat from rotating relative to each other.

[0011] When this solution is used in practice, the first connecting seat serves as a mounting seat for the light source module, the chip module and the lens module, and together with the light source module, the chip module and the lens module, forms a first connecting component as a light-guiding imaging component. The second connecting seat is used to connect the water-gas pipeline, the auxiliary water supply pipeline and the instrument channel pipeline. Specifically, the water-gas pipeline, the auxiliary water supply pipeline and the instrument channel pipeline are respectively connected to the water-gas channel, the auxiliary water supply channel and the instrument channel to form a second connecting component as a pipeline integrated component. During the assembly process, the first connecting component and the second connecting component are assembled independently. After the first connecting component and the second connecting component are assembled separately, the first connecting component and the second connecting component are assembled through the first connecting seat and the second connecting seat using the protrusions and the grooves.

[0012] Different from the prior art, this solution sets the head end seat as a split structure including a first connecting seat and a second connecting seat according to the functions of each component of the head end of the endoscope insertion part, and uses the first connecting seat and the second connecting seat to carry other functional components of the head end of the endoscope insertion part or serve as the installation basis of these components. During assembly, it is different from installing each component in sequence on the integral head end seat. Since the first connecting component and the second connecting component can be assembled independently and simultaneously, the glue curing time in the entire assembly process can be effectively shortened, thereby achieving the purpose of improving the assembly efficiency of the head end of the endoscope insertion part. At the same time, the later splicing of the first connecting seat and the second connecting seat is the connection between components. Compared with the existing position using screws for connection, this structural form can effectively reduce the number of screws used, which is beneficial to the small volume design of the head end of the endoscope insertion part and improving the assembly efficiency.

[0013] On the other hand, the present solution is configured such that the installation space and the related channels are located on the first connecting seat and the second connecting seat respectively. At the same time, the first connecting component is a light guiding imaging component with complete light guiding and imaging functions, and the second connecting component is a pipeline integrated component with complete channel functions. After the first connecting component is assembled, the optical performance (usually including field of view angle, optical clarity, etc.) and sealing of the first connecting component can be tested. When the optical performance and sealing are insufficient due to installation accuracy, gluing, etc., the first connecting component can be repaired. After the second connecting component is assembled, the sealing of the second connecting component can be tested. When the sealing is insufficient due to gluing, etc., the second connecting component can be repaired. Therefore, the present solution provides a basis for individual performance testing of each component of the head end of the insertion part of the endoscope, avoiding the need for overall disassembly, removal of glue and screws and other connecting structures, and reassembly when the performance test is found to be unqualified and repaired after the overall assembly of the head end of the insertion part of the endoscope. The present solution can effectively improve the efficiency of the assembly process from the perspective of assembly repair.

[0014] On the other hand, the present solution is configured such that the installation space and the related channels are respectively located on the first connecting seat and the second connecting seat. When assembling the first connecting component and the second connecting component, since the assembly of the two can be implemented separately and do not affect each other, compared with the integral head end seat, each component has a relatively open external assembly operation space during assembly. Therefore, the present solution can effectively ensure the assembly quality of each component of the head end of the endoscope insertion part; at the same time, since the first connecting component and the second connecting component are assembled independently and then spliced, with the assistance of the external assembly operation space, the compactness of other components or structures other than the first connecting seat and the second connecting seat can be further improved, which is beneficial to the small volume design of the head end of the endoscope insertion part.

[0015] On the other hand, the present scheme is configured to include the card slot and the card convex, so that after completing the assembly of the first connecting component and the second connecting component, not only can the card slot and the card convex be used to quickly complete the positioning and matching of the two connecting components to achieve efficient assembly, but at the same time, the card slot and the card convex can be used to achieve anti-rotation constraints on the first connecting component and the second connecting component. On the basis of a simple structure, the light-guiding imaging component and the pipeline integrated component on the head end of the endoscope insertion part have a stable and reliable relative position relationship, thereby ensuring the assembly quality and performance of the head end of the endoscope insertion part.

[0016] At the same time, the card slot and the card protrusion are both arranged on the side of the corresponding connecting seat, so that the splicing of the above components is the left-right splicing in the radial direction of the head end of the insertion part, rather than the stacking in the axial direction of the head end of the insertion part. The design is intended to adapt to the general structure of the head end of the existing insertion part: the head end of the insertion part has channel openings of a water vapor channel, an auxiliary water supply channel and an instrument channel, and also has a light-guiding window as the front end structure of a light source module, and also has a lens as the front end structure of a lens module. Therefore, the left-right splicing in the radial direction can make the first connecting component and the second connecting component have corresponding functional components or openings at the head end of the insertion part, and the matching body formed after simple splicing has a conventional appearance structure.

[0017] Furthermore, the first connection seat and the second connection seat both have an outer side surface that is an arc surface. After the card slot and the card convex are matched, on the formed matching body, the outer side surface is located on the same cylindrical surface. Furthermore, for the following first connection seat including an optical fiber mounting seat and a lens mounting seat, a better application is that the lens mounting seat is centrally arranged relative to the two optical fiber mounting seats, and the optical fiber mounting seat is located near the outer side surface of the first connection seat. When a head end cover that is beneficial to the patient's comfort after contacting human tissue is used (for example, the head end cover is a flexible material, PEEK plastic with good biocompatibility, etc., and the first connection seat and the second connection seat are rigid materials with good structure and shape stability) to provide radial constraints for the two connection seats, the inner side surface of the head end cover is set to be a cylindrical surface, the outer side surfaces of the two optical fiber mounting seats are arc surfaces and are located on the same cylindrical surface, the outer side surface of the optical fiber mounting seat is matched with the inner side surface of the head end cover, the front end of the second connection seat is reduced in diameter relative to the rear end, and the front end side surface of the second connection seat is a arc surface that faces the inner side surface of the head end cover. After the matching is completed, the outer side surface of the optical fiber mounting seat and the outer side surface of the front end of the second connecting seat are located on the same cylindrical surface, and the head end cover is matched on the cylindrical surface. Furthermore, for the above first connecting seat including the optical fiber mounting seat and the lens mounting seat, the optical fiber mounting seat and the lens mounting seat are equivalent to three columnar structures located at the front end of the first connecting seat. In order to make the first connecting seat and the second connecting seat have axial positioning functions with each other, it is set that the second connecting seat has a boss that can be embedded in the gap between the optical fiber mounting seat and the lens mounting seat, and the rear end of the above boss is assembled to contact the end face, and then the head end cover is fixedly connected to the first connecting seat and the second connecting seat by bonding or other methods. In this way, the card groove and the card convexity are used to form the circumferential direction constraints of the corresponding components, the boss and the end face are used to form the axial direction constraints of the corresponding components, and the head end cover is used to form the radial direction constraints of the corresponding components. It is possible to efficiently and reliably form an overall structure that is beneficial to the miniaturized design of the head end of the endoscope insertion part. In order to further reduce the volume of the overall structure, the head end cover and the corresponding connecting seat are preferably connected by bonding.

[0018] As a further technical solution of the endoscope insertion head structure:

[0019] The installation space includes an optical fiber channel for accommodating an optical fiber in a light source module, a chip installation space for accommodating a chip module, and a lens installation space for accommodating a lens module;

[0020] The optical fiber channel has a first opening at the front end of the first connecting seat, the lens installation space has a second opening at the front end of the first connecting seat, and both sides of the second opening have first openings.

[0021] When the above scheme is put into practical use, the optical fiber channel provides an optical fiber setting space, which is generally set so that the front end of the optical fiber is flush with the front end of the optical fiber channel. After the optical fiber end face is processed at the front end of the optical fiber, a light-guiding window is adapted. The chip installation space is used to install the chip module, and the lens installation space is used to install the lens module. Since the chip module and the lens module are used for imaging, a signal connection needs to be established between the two. Therefore, a better implementation method is that the lens installation space and the chip installation space are connected. The first hole position is used to set the optical fiber end face and the light-guiding window, and the second hole is used to expose the lens of the lens module. The first hole is provided on both sides of the second hole in order to use the light source module to provide good lighting conditions for the imaging area of ​​the lens module.

[0022] The first connection seat is a cylindrical structure, and the chip installation space is located inside the first connection seat;

[0023] A fiber optic mounting seat and a lens mounting seat are arranged at the front end of the first connecting seat, and fiber optic mounting seats are arranged on both sides of the lens mounting seat. The lens mounting space is located in the lens mounting seat, and the second opening is located at the front end of the lens mounting seat. Each fiber optic mounting seat has a fiber optic channel, and each fiber optic mounting seat has a first opening at the front end.

[0024] In the above scheme, the chip installation space is set on the inner side of the first connecting seat. On the one hand, the first connecting seat is used to provide anti-external force protection for the chip module in the chip installation space. Specifically, the chip module is filled with glue and solidified after being inserted to prevent the chip module from bending due to the connection structure between the coil and the chip module, thereby preventing the chip module components and welding points from loosening due to the pulling of the chip module by the connection structure between the coil and the chip module, thereby protecting the chip module. On the other hand, when it is necessary to set the potting glue to pot the chip module in the chip installation space, the chip installation space is used to provide a relatively closed potting area, which is convenient for the smooth implementation of the potting glue pouring. The above optical fiber mounting seat and lens mounting seat are used to configure the optical fiber channel, the first opening, the lens installation space and the second opening on the first connecting seat, so that the first connecting component has a light-guiding window and a lens located at the head end of the insertion part.

[0025] A preferred implementation method is that the rear end of the first connecting seat has a plug-in seat, and three parallel installation grooves are arranged on the plug-in seat. Among the three installation grooves, the installation groove located in the middle extends to the inside of the first connecting seat as a chip installation space, and the installation grooves located on both sides serve as optical fiber installation grooves that are connected to the optical fiber channel.

[0026] The first openings are in a crescent shape with the recessed side facing the inner side of the first connecting seat, and each first opening is adapted to be equipped with a crescent-shaped light-guiding window.

[0027] In the above scheme, by setting the first hole and the light guide window to be crescent-shaped, compared with the traditional circular optical fiber end face and light guide window, the light guiding area is guaranteed by the optical fiber end face area and the light guide window area, and the influence of the light guiding imaging component on the outer diameter size of the insertion part head end is improved, thereby facilitating the small-size design of the insertion part.

[0028] Also included is a light source module, the light source module includes an optical fiber installed in the optical fiber channel, and each first opening is configured with an optical fiber;

[0029] It also includes a chip module, and the chip module is potted in the chip installation space by potting glue;

[0030] It also includes a lens module, which is installed in the lens installation space.

[0031] In the above solution, the light source module, the chip module and the lens module are installed on the first connecting seat to form the first connecting assembly mentioned above.

[0032] The second connection seat is provided with a water-gas connection pipe, an auxiliary water supply connection pipe and an instrument channel connection pipe, each of which has one end fixedly connected to the second connection seat and the other end provided with an annular protrusion;

[0033] The annular protrusion is an annular structure located outside each and extending in the circumferential direction around each;

[0034] The number of the annular protrusions on each is greater than or equal to 2, and the annular protrusions on each are arranged at intervals along the axial direction of the device, and annular grooves are formed between adjacent annular protrusions.

[0035] The above scheme provides a specific setting form of a second connecting seat, and the water-gas connecting pipe, the auxiliary water supply connecting pipe, and the instrument channel connecting pipe respectively provide the water-gas channel, the auxiliary water supply channel, and the instrument channel. The specific setting method can be that the second connecting seat, the water-gas connecting pipe, the auxiliary water supply connecting pipe, and the instrument channel connecting pipe are an integrated structure, or the above four are different parts, which are connected into an assembly by bonding, welding, or threaded connection. Among the above three, the water-gas connecting pipe is provided with an end with an annular protrusion for connecting to the water-gas pipeline, the auxiliary water supply connecting pipe is provided with an end with an annular protrusion for connecting to the auxiliary water supply pipeline, and the instrument channel connecting pipe is provided with an end with an annular protrusion for connecting to the instrument channel pipeline. The annular protrusion and the annular groove serve as the tenon structure and the tenon-groove structure on each, and are used to strengthen the reliability of the connection between each and the corresponding pipeline (the water-gas pipeline, the auxiliary water supply pipeline, and the instrument channel pipeline generally use flexible pipes, which are plugged into the outside of the corresponding pipe after the pipe is expanded or softened). At the same time, the annular groove can be used as a glue storage tank when each is connected to the corresponding pipeline, that is, before each is connected to the corresponding pipeline, the uncured glue is accommodated through the annular groove. After the plugging of each and the corresponding pipeline is completed, the glue contained in the annular groove can achieve the bonding connection between each pipe and the pipeline, while further strengthening the reliability of the connection between each and the corresponding pipeline, the sealing reliability between each and the corresponding pipeline is strengthened. It is easy to understand that the number of annular protrusions on each is greater than or equal to 2, so that at least one annular groove as the glue storage tank can be formed on each. Further, in order to further optimize the connection reliability between each and the corresponding pipeline, the outer diameter of the annular protrusion located at the end of each is set to be greater than the outer diameter of other annular protrusions.

[0036] The orifice of each of the ends provided with the annular protrusion has a reaming section, wherein the reaming section is a tapered hole section, wherein the end of the tapered hole section with a larger diameter is located at the orifice side;

[0037] Each of them is plugged into the second connecting seat through a stepped hole configured on the second connecting seat, wherein the end of each is pressed against the stepped surface of the stepped hole, the side of each is sealed and connected to the stepped hole through an adhesive layer, and one end of each is provided with an annular protrusion exposed to the outside of the rear end of the second connecting seat.

[0038] In the above scheme, the expanded hole section on the water-gas connecting pipe is used to optimize the flow state of the fluid (water, gas) at the docking position between the water-gas pipeline and the water-gas connecting pipe, and reduce the resistance of water and gas entering the water-gas connecting pipe through the water-gas pipeline. The expanded hole section on the auxiliary water supply connecting pipe is used to optimize the flow state of the fluid (water) at the docking position between the auxiliary water supply pipeline and the auxiliary water supply connecting pipe, and reduce the resistance of water entering the auxiliary water supply connecting pipe through the auxiliary water supply pipeline. The expanded hole section on the instrument channel connecting pipe is used to improve the smoothness of the instrument entering the instrument channel connecting pipe from the instrument channel pipeline. At the same time, the above scheme provides a specific connection form between each connecting pipe and the second connecting seat, the stepped surface is used to locate the insertion depth of each connecting pipe on the second connecting seat, the adhesive layer provides a connection form that is beneficial to the small volume design of the head end structure of the insertion part and can provide a reliable connection relationship and a sealing relationship at the same time, and the exposed position of each annular protrusion is intended to facilitate the connection with the corresponding connecting pipe.

[0039] The head end seat also includes a head end cover, which serves as the front end structure of the head end structure of the endoscope insertion part: for a matching body formed by the first connecting seat and the second connecting seat, the head end cover is fixed to the front end of the matching body and surrounds the front end of the matching body.

[0040] The above scheme is: on the head end of the insertion part of the endoscope, relative to the matching body, it also includes a head end cover fixed on the matching body and surrounding the front end of the matching body. In this way, the head end cover can be made of a different material from the first connecting seat and the second connecting seat, such as a flexible material, to achieve the purpose of enhancing the patient's sensory perception of the head end structure of the insertion part and ensuring high-quality and efficient diagnosis and treatment. A better implementation method is that the head end cover is a cover-like structure with an end plate and a side enclosure. The end plate is located at the front end of the matching body, and the end plate has a plurality of through holes. These through holes are respectively used to adapt the light guide window, the lens module, the water vapor channel, the auxiliary water supply channel and the instrument channel. The side enclosure is used to surround the side of the front end of the matching body to fully protect the patient through the head end cover and reduce the possibility of scratches and stress reactions.

[0041] The present solution also relates to an endoscope, which includes the endoscope insertion portion head end structure as described in any one of the above items.

[0042] It is easy to understand that the endoscope is a specific application of the endoscope insertion head structure, that is, the front end of the endoscope body adopts the endoscope insertion head structure as described above.

[0043] The present invention also relates to a method for assembling an endoscope insertion portion head end structure, which is a method for assembling an endoscope insertion portion head end structure as described in any one of the above, comprising the following steps:

[0044] S1. Obtain a first connection component and a second connection component, wherein the first connection component includes a first connection seat and a light source module, a chip module and a lens module installed in the installation space; the second connection component includes a second connection seat and a water-gas pipeline, an auxiliary water supply pipeline and an instrument channel pipe connected to the water-gas channel, the auxiliary water supply channel and the instrument channel respectively;

[0045] S2, performing a sealing test and an optical performance test on the first connection component, performing a sealing test on the second connection component, reworking the first connection component and the second connection component that fail the test, and re-testing the reworked first connection component and the second connection component for qualification;

[0046] S3, assembling the first connection component and the second connection component that have passed the inspection, specifically: assembling the first connection seat and the second connection seat so that the card slot and the card protrusion cooperate with each other.

[0047] It is easy to understand that the above method is the assembly method of the head end structure of the endoscope insertion part during assembly.

[0048] The present invention has the following beneficial effects:

[0049] This solution can effectively shorten the glue curing time in the entire assembly process of the endoscope insertion head, thereby achieving the purpose of improving the assembly efficiency of the endoscope insertion head. At the same time, this structural form can effectively reduce the number of screws used, which is beneficial to the small volume design of the endoscope insertion head and the improvement of assembly efficiency.

[0050] This solution provides a basis for individual performance testing of each component of the endoscope insertion head, avoiding the need to disassemble the entire endoscope insertion head, remove glue and screws and other connection structures, and reassemble it again when the performance test fails after the endoscope insertion head is assembled. This solution can effectively improve the efficiency of the assembly process from the perspective of assembly repair;

[0051] This solution can effectively ensure the assembly quality of the various components of the endoscope insertion head; at the same time, since the first connecting component and the second connecting component are assembled independently and then spliced, with the assistance of the external assembly operation space, the compactness of other components or structures other than the first connecting seat and the second connecting seat can be further improved, which is beneficial to the small volume design of the endoscope insertion head;

[0052] This solution can not only utilize the card slot and the card protrusion to quickly complete the positioning and matching of the two connecting components to achieve efficient assembly, but also, based on a simple structure, enable the light-guiding imaging component and the pipeline integrated component on the head end of the endoscope insertion part to have a stable and reliable relative position relationship, thereby ensuring the assembly quality and performance of the head end of the endoscope insertion part. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 This is a structural schematic diagram of a specific embodiment of the endoscope insertion portion tip structure described in this solution;

[0054] Figure 2 for Figure 1 Structural exploded view of the structure shown;

[0055] Figure 3 for Figure 1 In the structure shown, an exploded view of the structure of the first connecting component;

[0056] Figure 4 for Figure 3 A schematic diagram of the structure of some parts in the structure shown;

[0057] Figure 5 for Figure 4 a front view of the structure shown;

[0058] Figure 6 for Figure 1 In the structure shown, an exploded view of the structure of the second connecting component;

[0059] Figure 7 for Figure 6 Cross-sectional view of the water and gas pipe;

[0060] Figure 8 for Figure 6 Cross-sectional view of the middle auxiliary water supply pipe;

[0061] Fig. 9 for Figure 6 A cross-sectional view of the mechanical channel nozzle;

[0062] Fig.10 for Figure 6 A front view of the second connecting seat;

[0063] Fig.11 for Figure 6 Front view of the second connecting socket.

[0064] The reference numerals in the figure are respectively: 1. first connecting component, 11. chip module, 12. first connecting seat, 13. lens module, 14. light guide window, 15. lens mounting seat, 16. optical fiber mounting seat, 17. optical fiber end face, 18. slot, 2. head end cover, 3. second connecting component, 31. water and gas pipeline, 32. auxiliary water supply pipeline, 33. instrument channel pipeline, 34. water and gas connecting pipe, 35. auxiliary water supply connecting pipe, 36. instrument channel connecting pipe, 37. annular protrusion, 38. annular groove, 39. second connecting seat, 310. card protrusion, 311. expansion section. DETAILED DESCRIPTION

[0065] The present invention is further described in detail below in conjunction with embodiments, but the present invention is not limited to the following embodiments:

[0066] Embodiment 1:

[0067] like Figures 1 to 11 As shown, an endoscope insertion portion head end structure includes a head end seat, the head end seat includes a first connection seat 12 and a second connection seat 39, the first connection seat 12 is provided with an installation space for installing a light source module, a chip module 11 and a lens module 13; the second connection seat 39 is provided with a water vapor channel, an auxiliary water supply channel and an instrument channel;

[0068] One of the first connecting seat 12 and the second connecting seat 39 has a slot 18 on its side, and the other has a protrusion 310 on its side. The slot 18 is matched with the protrusion 310, and the first connecting seat 12 and the second connecting seat 39 are matched so that the protrusion 310 is embedded in the slot 18. At the same time, the slot 18 and the protrusion 310 serve as anti-rotation restraints to prevent the first connecting seat 12 and the second connecting seat 39 from rotating relative to each other.

[0069] When this solution is used in practice, the first connecting seat 12 serves as a mounting seat for the light source module, the chip module 11 and the lens module 13, and together with the light source module, the chip module 11 and the lens module 13, forms a first connecting component 1 as a light-guiding imaging component. The second connecting seat 39 is used to connect the water-gas pipeline 31, the auxiliary water supply pipeline 32 and the instrument channel pipeline 33. Specifically, the water-gas pipeline 31, the auxiliary water supply pipeline 32 and the instrument channel pipeline 33 are respectively connected to the water-gas channel, the auxiliary water supply channel and the instrument channel to form a second connecting component 3 as a pipeline integrated component. During the assembly process, the first connecting component 1 and the second connecting component 3 are assembled independently. After the first connecting component 1 and the second connecting component 3 are assembled separately, the first connecting component 1 and the second connecting component 3 are assembled by using the protrusion 310 and the groove 18 through the first connecting seat 12 and the second connecting seat 39.

[0070] Different from the prior art, this solution sets the head end seat as a split structure including a first connecting seat 12 and a second connecting seat 39 according to the functions of each component of the head end of the endoscope insertion part, and uses the first connecting seat 12 and the second connecting seat 39 to carry other functional components of the head end of the endoscope insertion part or serve as the installation basis of these components. During assembly, it is different from installing each component in sequence on the integral head end seat. Since the first connecting component 1 and the second connecting component 3 can be assembled independently and simultaneously, the glue curing time in the entire assembly process can be effectively shortened, thereby achieving the purpose of improving the assembly efficiency of the head end of the endoscope insertion part. At the same time, the later splicing of the first connecting seat 12 and the second connecting seat 39 is the connection between the components. Compared with the existing position using screws for connection, this structural form can effectively reduce the number of screws used, which is beneficial to the small volume design of the head end of the endoscope insertion part and improving the assembly efficiency.

[0071] On the other hand, in this solution, the installation space and the related channels are respectively located on the first connection seat 12 and the second connection seat 39. At the same time, the first connection component 1 is a light guide imaging component with complete light guide and imaging functions, and the second connection component 3 is a pipeline integrated component with complete channel functions. After the first connection component 1 is assembled, the optical performance (usually including field of view angle, optical clarity, etc.) and sealing of the first connection component 1 can be tested. When the optical performance and sealing are insufficient due to installation accuracy, glue coating, etc., the first connection component 1 can be tested. The connecting component 1 is repaired, and after the second connecting component 3 is assembled, the sealing of the second connecting component 3 can be tested. When the sealing is insufficient due to reasons such as gluing, the second connecting component 3 can be repaired. Therefore, this solution provides a basis for individual performance testing of each component of the endoscope insertion head, avoiding the need for overall disassembly, removal of glue and screws and other connecting structures, and reassembly processes when the performance test is found to be unqualified after the overall assembly of the endoscope insertion head and repair is required. This solution can effectively improve the efficiency of the assembly process from the perspective of assembly repair.

[0072] On the other hand, the present solution is configured such that the installation space and the related channels are located on the first connecting seat 12 and the second connecting seat 39 respectively. When assembling the first connecting component 1 and the second connecting component 3, since the assembly of the two can be implemented separately and do not affect each other, compared with the integral head end seat, each component has a relatively open external assembly operation space during assembly. Therefore, the present solution can effectively ensure the assembly quality of each component at the head end of the endoscope insertion part; at the same time, since the first connecting component 1 and the second connecting component 3 are assembled independently and then spliced, with the assistance of the external assembly operation space, the compactness of other components or structures other than the first connecting seat 12 and the second connecting seat 39 can be further improved, which is beneficial to the small-volume design of the head end of the endoscope insertion part.

[0073] On the other hand, the present solution is configured to include the card slot 18 and the card protrusion 310. Thus, after the assembly of the first connecting component 1 and the second connecting component 3 is completed, not only can the card slot 18 and the card protrusion 310 be used to quickly complete the positioning and matching of the two connecting components to achieve efficient assembly, but also the card slot 18 and the card protrusion 310 can be used to achieve anti-rotation constraints on the first connecting component 1 and the second connecting component 3. On the basis of a simple structure, the light-guiding imaging component and the pipeline integrated component on the head end of the endoscope insertion part have a stable and reliable relative position relationship, thereby ensuring the assembly quality and performance of the head end of the endoscope insertion part.

[0074] At the same time, the card slot 18 and the card protrusion 310 are both arranged on the side of the corresponding connecting seat, so that the splicing of the above components is the left-right splicing in the radial direction of the head end of the insertion part, rather than the stacking in the axial direction of the head end of the insertion part. The design is intended to adapt to the general structure of the head end of the existing insertion part: the head end of the insertion part has channel openings of a water vapor channel, an auxiliary water supply channel and an instrument channel, and also has a light-guiding window 14 as a front end structure of a light source module, and also has a lens as a front end structure of a lens module 13. Therefore, the left-right splicing in the radial direction can make the first connecting component 1 and the second connecting component 3 have corresponding functional components or openings at the head end of the insertion part, and the matching body formed after simple splicing has a conventional appearance structure.

[0075] Further, the first connection seat 12 and the second connection seat 39 both have an outer side surface that is an arc surface. After the card slot 18 is matched with the card protrusion 310, on the formed matching body, the outer side surface is located on the same cylindrical surface. Further, for the first connection seat 12 including the optical fiber mounting seat 16 and the lens mounting seat 15, the preferred application is that the lens mounting seat 15 is centrally arranged relative to the two optical fiber mounting seats 16, and the optical fiber mounting seat 16 is located near the outer side surface of the first connection seat 12. When the head end cover 2 (for example) that is beneficial to the patient's comfort after contacting human tissue is adopted For example, the head end cover 2 is made of flexible material, and the first connecting seat 12 and the second connecting seat 39 are made of rigid materials with good structure and shape stability) to provide radial constraints for the two connecting seats, the inner side surface of the head end cover 2 is set to be a cylindrical surface, and the outer side surfaces of the two optical fiber mounting seats 16 are arc surfaces and are located on the same cylindrical surface. The outer side surface of the optical fiber mounting seat 16 matches the inner side surface of the head end cover 2, and the front end of the second connecting seat 39 is reduced in diameter relative to the rear end. The front end side surface of the second connecting seat 39 is an arc surface that matches the inner side surface of the head end cover 2. After the first connecting seat 12 and the second connecting seat 39 are matched The outer side surface of the optical fiber mounting seat 16 and the outer side surface of the front end of the second connecting seat 39 are located on the same cylindrical surface, and the head end cover 2 is matched with the cylindrical surface. Further, for the first connecting seat 12 including the optical fiber mounting seat 16 and the lens mounting seat 15, the optical fiber mounting seat 16 and the lens mounting seat 15 are equivalent to three columnar structures located at the front end of the first connecting seat 12. In order to make the first connecting seat 12 and the second connecting seat 39 have an axial positioning function with each other, it is set to have a boss on the second connecting seat 39 that can be embedded in the gap between the optical fiber mounting seat 16 and the lens mounting seat 15. By assembling the rear end of the above-mentioned boss in contact with the end face, the head end cover 2 is fixedly connected to the first connecting seat 12 and the second connecting seat 39 by bonding or other methods. In this way, the card slot 18 and the card convex 310 are used to form the circumferential direction constraint of the corresponding parts, the boss and the end face are used to form the axial direction constraint of the corresponding parts, and the head end cover 2 is used to form the radial direction constraint of the corresponding parts. In this way, an overall structure that is beneficial to the miniaturized design of the head end of the endoscope insertion part can be efficiently and reliably formed. In order to further reduce the volume of the overall structure, the head end cover 2 and the corresponding connecting seat are preferably connected by bonding.

[0076] Embodiment 2:

[0077] This embodiment is further refined on the basis of embodiment 1:

[0078] The installation space includes an optical fiber channel for accommodating an optical fiber in a light source module, a chip installation space for accommodating a chip module 11, and a lens installation space for accommodating a lens module 13;

[0079] The optical fiber channel has a first opening at the front end of the first connecting seat 12, the lens installation space has a second opening at the front end of the first connecting seat 12, and both sides of the second opening have first openings.

[0080] When the above scheme is put into practical use, the optical fiber channel provides an optical fiber setting space, which is generally set so that the front end of the optical fiber is flush with the front end of the optical fiber channel. After the optical fiber end face 17 is processed at the front end of the optical fiber, the light guide window 14 is adapted. The chip installation space is used to install the chip module 11, and the lens installation space is used to install the lens module 13. Since the chip module 11 and the lens module 13 are used for imaging, a signal connection needs to be established between the two. Therefore, a better implementation method is that the lens installation space and the chip installation space are connected. The first hole position is used to set the optical fiber end face 17 and the light guide window 14, and the second hole is used to expose the lens of the lens module 13. The first hole is provided on both sides of the second hole in order to use the light source module to provide good lighting conditions for the imaging area of ​​the lens module 13.

[0081] Embodiment 3:

[0082] This embodiment is further refined on the basis of Embodiment 2:

[0083] The first connection base 12 is a cylindrical structure, and the chip installation space is located inside the first connection base 12;

[0084] A fiber optic mounting seat 16 and a lens mounting seat 15 are provided at the front end of the first connecting seat 12, and fiber optic mounting seats 16 are provided on both sides of the lens mounting seat 15. The lens mounting space is located in the lens mounting seat 15, and the second opening is located at the front end of the lens mounting seat 15. Each fiber optic mounting seat 16 has a fiber optic channel, and each fiber optic mounting seat 16 has a first opening at the front end.

[0085] In the above scheme, the chip installation space is set on the inner side of the first connecting seat 12. On the one hand, the first connecting seat 12 is used to provide anti-external force protection for the chip module 11 in the chip installation space. Specifically, the chip module 11 is filled with glue and solidified after being inserted to prevent the chip module 11 from being loosened due to the pulling of the chip module 11 by the connection structure between the coil during the bending process of the endoscope insertion part, thereby playing a role in protecting the chip module 11. On the other hand, when it is necessary to set a potting glue to pot the chip module 11 in the chip installation space, the chip installation space is used to provide a relatively closed potting area, which is convenient for the smooth implementation of the potting glue pouring; the above optical fiber mounting seat 16 and lens mounting seat 15 are used to configure the optical fiber channel, the first opening, the lens installation space and the second opening on the first connecting seat 12, so that the first connecting component 1 has a light-guiding window 14 and a lens located at the head end of the insertion part.

[0086] A preferred implementation method is that the rear end of the first connecting seat 12 has a plug-in seat, and three parallel installation grooves are arranged on the plug-in seat. Among the three installation grooves, the installation groove located in the middle extends to the inside of the first connecting seat 12 as a chip installation space, and the installation grooves located on both sides serve as optical fiber installation grooves that are connected to the optical fiber channel.

[0087] Embodiment 4:

[0088] This embodiment is further refined on the basis of Embodiment 2:

[0089] The first openings are in a crescent shape with the recessed side facing the inner side of the first connecting seat 12 , and each first opening is adapted to be equipped with a crescent-shaped light-guiding window 14 .

[0090] In the above scheme, by setting the first hole and the light-guiding window 14 to be crescent-shaped, compared with the traditional circular optical fiber end face 17 and the light-guiding window 14, while ensuring the light-guiding area through the area of ​​the optical fiber end face 17 and the area of ​​the light-guiding window 14, the influence of the light-guiding imaging component on the outer diameter size of the head end of the insertion part is improved, thereby facilitating the small-size design of the insertion part.

[0091] Embodiment 5:

[0092] This embodiment is further refined on the basis of Embodiment 2:

[0093] Also included is a light source module, the light source module includes an optical fiber installed in the optical fiber channel, and each first opening is configured with an optical fiber;

[0094] It also includes a chip module 11, and the chip module 11 is potted in the chip installation space by potting glue;

[0095] It also includes a lens module 13, and the lens module 13 is installed in the lens installation space.

[0096] In the above solution, the light source module, the chip module 11 and the lens module 13 are installed on the first connecting seat 12 to form the first connecting assembly 1 mentioned above.

[0097] Embodiment 6:

[0098] This embodiment is further refined on the basis of embodiment 1:

[0099] The second connection seat 39 is provided with a water-gas connection pipe 34, an auxiliary water supply connection pipe 35 and an instrument channel connection pipe 36. Each of the water-gas connection pipe 34, the auxiliary water supply connection pipe 35 and the instrument channel connection pipe 36 has one end fixedly connected to the second connection seat 39 and the other end is provided with an annular protrusion 37.

[0100] The annular protrusion 37 is an annular structure located outside each and extending around the circumference of each;

[0101] The number of the annular protrusions 37 on each is greater than or equal to 2, and the annular protrusions 37 on each are arranged at intervals along the axis direction of the device, and annular grooves 38 are formed between adjacent annular protrusions 37 .

[0102] The above scheme provides a specific setting form of a second connecting seat 39, and the water-gas connecting pipe 34, the auxiliary water supply connecting pipe 35, and the instrument channel connecting pipe 36 respectively provide the water-gas channel, the auxiliary water supply channel and the instrument channel. The specific setting method can be that the second connecting seat 39, the water-gas connecting pipe 34, the auxiliary water supply connecting pipe 35 and the instrument channel connecting pipe 36 are an integrated structure, or the above four are different parts, which are connected into an assembly by bonding, welding, or threaded connection. Among the above three, the water-gas connecting pipe 34 is provided with an end of an annular protrusion 37 for connecting to the water-gas pipeline 31, the auxiliary water supply connecting pipe 35 is provided with an end of an annular protrusion 37 for connecting to the auxiliary water supply pipeline 32, and the instrument channel connecting pipe 36 is provided with an end of an annular protrusion 37 for connecting to the instrument The channel pipeline 33, the annular protrusion 37 and the annular groove 38 are used as the tenon structure and the tenon-groove structure on each, which are used to strengthen the reliability of the connection between each and the corresponding pipeline (the water and gas pipeline 31, the auxiliary water supply pipeline 32, and the instrument channel pipeline 33 are generally flexible pipes, which are plugged into the outside of the corresponding pipe after the pipe is expanded or softened). At the same time, the annular groove 38 can be used as a glue storage tank when each is connected to the corresponding pipeline, that is, before each is connected to the corresponding pipeline, the uncured glue is accommodated through the annular groove 38. After the plugging of each with the corresponding pipeline is completed, the glue contained in the annular groove 38 can achieve the bonding connection between each pipe and the pipeline, while further strengthening the reliability of the connection between each and the corresponding pipeline, and strengthening the sealing reliability of each and the corresponding pipeline. It is easy to understand that the number of annular protrusions 37 on each is greater than or equal to 2, so as to enable at least one annular groove 38 as the glue storage tank to be formed on each. Furthermore, in order to further optimize the connection reliability between each and the corresponding pipeline, the outer diameter of the annular protrusion 37 located at the end of each is set to be larger than the outer diameters of other annular protrusions 37.

[0103] Embodiment 7:

[0104] This embodiment is further refined on the basis of Embodiment 6:

[0105] The orifice of each end provided with the annular protrusion 37 has a reaming section 311, wherein the reaming section 311 is a tapered hole section, wherein the end of the tapered hole section with a larger diameter is located at the orifice side;

[0106] Each of them is plugged into the second connecting seat 39 through a stepped hole configured on the second connecting seat 39, wherein the end of each is pressed against the stepped surface of the stepped hole, the side of each is sealed and connected to the stepped hole through an adhesive layer, and one end of each is provided with an annular protrusion 37 exposed to the outside of the rear end of the second connecting seat 39.

[0107] In the above scheme, the expanded hole section 311 on the water-gas pipe 34 is used to optimize the flow state of the fluid (water, gas) at the docking position of the water-gas pipeline 31 and the water-gas pipe 34, and reduce the resistance of water and gas entering the water-gas pipe 34 through the water-gas pipeline 31. The expanded hole section 311 on the auxiliary water supply pipe 35 is used to optimize the flow state of the fluid (water) at the docking position of the auxiliary water supply pipe 32 and the auxiliary water supply pipe 35, and reduce the resistance of water entering the auxiliary water supply pipe 35 through the auxiliary water supply pipe 32. The expanded hole section 311 on the instrument channel pipe 36 is used to improve the smoothness of the instrument entering the instrument channel pipe 36 from the instrument channel pipe 33. At the same time, the above scheme provides a specific connection form between each pipe and the second connecting seat 39, the stepped surface is used to locate the insertion depth of each pipe on the second connecting seat 39, the adhesive layer provides a connection form that is beneficial to the small volume design of the head end structure of the insertion part and can provide a reliable connection relationship and a sealing relationship. The exposed position of each annular protrusion 37 is intended to facilitate the connection with the corresponding pipe.

[0108] Embodiment 8:

[0109] This embodiment is further refined on the basis of embodiment 1:

[0110] The head end seat also includes a head end cover 2, which serves as the front end structure of the head end structure of the endoscope insertion part: for a matching body formed by the first connecting seat 12 and the second connecting seat 39, the head end cover 2 is fixed to the front end of the matching body and surrounds the front end of the matching body.

[0111] The above scheme is: on the head end of the insertion part of the endoscope, relative to the matching body, it also includes a head end cover 2 fixed on the matching body and surrounding the front end of the matching body. In this way, the head end cover 2 can be made of a different material from the first connecting seat 12 and the second connecting seat 39, such as the head end cover 2 is a flexible material, so as to achieve the purpose of enhancing the patient's sensory perception of the head end structure of the insertion part and ensuring high-quality and efficient diagnosis and treatment. A better implementation method is that the head end cover 2 is a cover-like structure with an end plate and a side enclosure. The end plate is located at the front end of the matching body, and the end plate has a plurality of through holes. These through holes are respectively used to adapt the light guide window 14, the lens module 13, the water vapor channel, the auxiliary water supply channel and the instrument channel. The side enclosure is used to surround the side of the front end of the matching body to fully protect the patient through the head end cover 2 and reduce the possibility of scratches and stress reactions.

[0112] Embodiment 9:

[0113] This embodiment provides an endoscope based on the first embodiment. The endoscope includes the endoscope insertion portion tip structure described in the first embodiment.

[0114] It is easy to understand that the endoscope is a specific application of the endoscope insertion head structure, that is, the front end of the endoscope body adopts the endoscope insertion head structure as described above.

[0115] Embodiment 10:

[0116] This embodiment provides a method for assembling the head end structure of an endoscope insertion portion on the basis of Embodiment 1. The method is the method for assembling the head end structure of the endoscope insertion portion described in Embodiment 1, and comprises the following steps:

[0117] S1, obtaining a first connection component 1 and a second connection component 3, wherein the first connection component 1 comprises a first connection seat 12 and a light source module, a chip module 11 and a lens module 13 installed in the installation space; the second connection component 3 comprises a second connection seat 39 and a water-gas pipeline 31, an auxiliary water supply pipeline 32 and an instrument channel pipe 36 respectively connected to the water-gas channel, the auxiliary water supply channel and the instrument channel;

[0118] S2, performing a sealing test and an optical performance test on the first connection component 1, performing a sealing test on the second connection component 3, reworking the first connection component 1 and the second connection component 3 that fail the test, and re-testing the reworked first connection component 1 and the second connection component 3 for qualification;

[0119] S3, assembling the first connecting component 1 and the second connecting component 3 that have passed the inspection, specifically: assembling the first connecting seat 12 and the second connecting seat 39 so that the card slot 18 and the card protrusion 310 are matched.

[0120] It is easy to understand that the above method is the assembly method of the head end structure of the endoscope insertion part during assembly.

[0121] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific embodiments of the present invention are limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, other embodiments obtained without departing from the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. An end structure of an endoscope insertion portion, comprising a head end seat, characterized in that: The head end seat comprises a first connection seat (12) and a second connection seat (39); the first connection seat (12) is provided with an installation space for installing a light source module, a chip module (11) and a lens module (13); the second connection seat (39) is provided with a water vapor channel, an auxiliary water supply channel and an instrument channel; A slot (18) is provided on the side of one of the first connecting seat (12) and a latch protrusion (310) is provided on the side of the other of the first connecting seat (12). The slot (18) and the latch protrusion (310) are matched with each other. The first connecting seat (12) and the second connecting seat (39) are matched with each other so that the latch protrusion (310) is embedded in the slot (18). At the same time, the slot (18) and the latch protrusion (310) serve as anti-rotation restraint components for preventing the first connecting seat (12) and the second connecting seat (39) from rotating relative to each other.

2. The endoscope insertion portion tip structure according to claim 1, characterized in that: The installation space comprises an optical fiber channel for accommodating an optical fiber in a light source module, a chip installation space for accommodating a chip module (11), and a lens installation space for accommodating a lens module (13); The optical fiber channel has a first opening at the front end of the first connecting seat (12), the lens installation space has a second opening at the front end of the first connecting seat (12), and both sides of the second opening have first openings.

3. The endoscope insertion portion tip structure according to claim 2, characterized in that: The first connection seat (12) is a cylindrical structure, and the chip installation space is located inside the first connection seat (12); The front end of the first connection seat (12) is provided with an optical fiber mounting seat (16) and a lens mounting seat (15), and optical fiber mounting seats (16) are provided on both sides of the lens mounting seat (15), the lens mounting space is located in the lens mounting seat (15), the second opening is located at the front end of the lens mounting seat (15), each optical fiber mounting seat (16) has an optical fiber channel, and the front end of each optical fiber mounting seat (16) has a first opening.

4. An endoscope insertion portion tip structure according to claim 2 or 3, characterized in that: The first openings are in the shape of a crescent with the recessed side facing the inner side of the first connecting seat (12), and each first opening is adapted to be equipped with a crescent-shaped light-guiding window (14).

5. The endoscope insertion portion tip structure according to claim 2 or 3, characterized in that: Also included is a light source module, the light source module includes an optical fiber installed in the optical fiber channel, and each first opening is configured with an optical fiber; It also includes a chip module (11), wherein the chip module (11) is potted in the chip installation space by potting glue; It also comprises a lens module (13), wherein the lens module (13) is installed in the lens installation space.

6. The endoscope insertion portion tip structure according to claim 1, characterized in that: The second connection seat (39) is provided with a water-gas connection pipe (34), an auxiliary water supply connection pipe (35) and an instrument channel connection pipe (36); each of the water-gas connection pipe (34), the auxiliary water supply connection pipe (35) and the instrument channel connection pipe (36) has one end fixedly connected to the second connection seat (39) and the other end provided with an annular protrusion (37); The annular protrusion (37) is an annular structure located outside each and extending in the circumferential direction of each; The number of the annular protrusions (37) on each is greater than or equal to 2, and the annular protrusions (37) on each are arranged at intervals along the axial direction of the device, and annular grooves (38) are formed between adjacent annular protrusions (37).

7. The endoscope insertion portion tip structure according to claim 6, characterized in that: The orifice of each device having one end provided with an annular protrusion (37) has a reamer section (311), wherein the reamer section (311) is a conical hole section, wherein the end of the conical hole section with a larger diameter is located at the orifice side; Each of them is plugged into the second connecting seat (39) through a stepped hole arranged on the second connecting seat (39), wherein the end of each of them is pressed against the stepped surface of the stepped hole, the side surface of each of them is sealed and connected to the stepped hole through an adhesive layer, and one end of each of them is provided with an annular protrusion (37) exposed to the outside of the rear end of the second connecting seat (39).

8. The endoscope insertion portion tip structure according to claim 1, characterized in that: The head end seat also includes a head end cover (2), which serves as the front end structure of the head end structure of the endoscope insertion part: for a matching body formed by the first connecting seat (12) and the second connecting seat (39), the head end cover (2) is fixed to the front end of the matching body and surrounds the front end of the matching body.

9. An endoscope, characterized in that: It comprises the endoscope insertion portion tip structure as described in any one of claims 1 to 8.

10. A method for assembling an endoscope insertion portion structure, characterized in that: The method is a method for assembling the end structure of the endoscope insertion portion according to any one of claims 1 to 8, comprising the following steps: S1. Obtain a first connection component (1) and a second connection component (3), wherein the first connection component (1) comprises a first connection seat (12) and a light source module, a chip module (11) and a lens module (13) installed in the installation space; the second connection component (3) comprises a second connection seat (39) and a water-gas pipeline (31), an auxiliary water supply pipeline (32) and an instrument channel pipe (33) respectively connected to the water-gas channel, the auxiliary water supply channel and the instrument channel; S2, performing a sealing test and an optical performance test on the first connecting component (1), performing a sealing test on the second connecting component (3), re-repairing the first connecting component (1) and the second connecting component (3) that fail the test, and re-repairing the first connecting component (1) and the second connecting component (3) after the repair; S3, assembling the first connection component (1) and the second connection component (3) that have passed the test, specifically: assembling the first connection seat (12) and the second connection seat (39) so that the card slot (18) and the card protrusion (310) are matched.

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