Endoscope insertion part head end structure and endoscope

Abstract

The utility model discloses an endoscope insertion part head end structure and an endoscope, and belongs to the technical field of endoscopes, the head end structure comprises a head end seat, the head end seat comprises a first connecting seat and a second connecting seat, and the first connecting seat is provided with an installation space used for installing a light source module, a chip module and a lens module; the second connecting seat is provided with a water vapor channel, an auxiliary water supply channel and an instrument channel; a clamping groove is formed in the side face of one of the first connecting base and the second connecting base, a clamping protrusion is arranged on the side face of the other one of the first connecting base and the second connecting base, the clamping groove is matched with the clamping protrusion, and the first connecting base and the second connecting base are matched to enable the clamping protrusion to be embedded into the clamping groove. The clamping groove and the clamping protrusion serve as anti-rotation restraining pieces for preventing relative rotation of the first connecting base and the second connecting base, the endoscope comprises the head end structure, and the assembling method is suitable for the head end structure. According to the structural design of the scheme, the assembling quality and efficiency of the head end structure of the endoscope insertion part can be effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of endoscope technology, and in particular to an endoscope insertion head structure and an endoscope. Background Technology

[0002] Endoscopes are now widely used in the medical industry as an important diagnostic and treatment tool. Taking the upper gastrointestinal endoscope as an example, it is inserted into the human body through the mouth, and the internal organs are observed and treated through the camera module at the tip of the insertion section. In the current technology, the diameter of the insertion tip of the endoscope is limited by the size of the channel in the usage environment and is not suitable to be set with a large outer diameter. Otherwise, it will encounter greater resistance during insertion, and it is easy to squeeze and scrape when bending, increasing the patient's stress response. When the diameter of the insertion tip is too small, the problems include a smaller instrument channel size and the need to eliminate the auxiliary water delivery function. At the same time, a smaller instrument channel size means that only surgical instruments of specific sizes and types can pass through, which puts higher requirements on the surgical instruments placed in the instrument tube, and there are situations where it is impossible to simultaneously grasp and clean tissue.

[0003] In the prior art, the head structure of the insertion part includes a head seat, an imaging module, a chip module, a light source module, an instrument channel, a water vapor channel, and a secondary water supply channel. To achieve a small-size design of the head structure of the insertion part, the main methods used are bonding and screw fastening to fix and assemble the various components. At the same time, due to the small size of the components and the small size of the fasteners (such as screws), and the large variety of components included in the head structure of the insertion part, whether fasteners or glue are used for fixing, there are problems of low assembly efficiency from the perspective of component size, fastener size, and glue curing time.

[0004] In the existing technology, since endoscopes need to undergo high-level disinfection or sterilization after use, there are high requirements for the sealing of the insertion head structure during assembly. Generally, the sealing test is performed after the head cover (the last component assembled in the assembly process) is completed. If the sealing is insufficient due to the manually applied glue, rework is required to meet the sealing requirements. The rework process involves disassembling components, removing glue, and reassembling components, which further reduces the assembly efficiency of the head structure.

[0005] In the existing technology, due to the high requirements for the optical performance of the imaging module, optical performance testing is generally performed after the head end is assembled. If the set requirements are not met, there will be a need for rework.

[0006] Regarding the design of the endoscope insertion head structure, there are technical solutions provided by patent document CN202321860599.7, in which the channel cavity, imaging cavity, and illumination cavity on the head end seat are made interconnected, thereby reducing the size of the head end seat and alleviating the discomfort of patients when using endoscope treatment; there are also technical solutions provided by patent document CN202420236229.4, in which the connecting tube head and the head end seat are made as one piece, thereby reducing the number of parts of the head end seat, thereby simplifying the processing, improving processing efficiency, reducing bonding and welding processes, and ensuring sealing and connection reliability.

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

[0008] To address the aforementioned issue of further optimizing the endoscope insertion head structure, this invention provides an endoscope insertion head structure and an endoscope. The structural design of this solution effectively improves the assembly quality and efficiency of the endoscope insertion head structure.

[0009] To address the aforementioned problems, this utility model provides an endoscope insertion head structure and an endoscope that solves the problems through the following technical points: An endoscope insertion head structure includes a head base, the head base including a first connecting base and a second connecting base, the first connecting base being provided with an installation space for installing a light source module, a chip module and a lens module; the second connecting base being provided with a water vapor channel, a secondary water delivery channel and an instrument channel;

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

[0011] In practical application, the first connector serves as a mounting base for the light source module, chip module, and lens module, forming a first connector assembly that acts as a light-guiding imaging component. The second connector connects the water and gas pipeline, the auxiliary water supply pipeline, and the instrument channel pipeline. Specifically, the water and gas pipeline, the auxiliary water supply pipeline, and the instrument channel pipeline are respectively connected to the water and gas channel, the auxiliary water supply channel, and the instrument channel to form a second connector assembly that acts as a pipeline integration component. During assembly, the first connector assembly and the second connector assembly are assembled independently. After the first connector assembly and the second connector assembly are assembled, the first connector assembly and the second connector assembly are assembled together using the latch and the slot.

[0012] Unlike existing technologies, this solution, based on the functions of each component at the endoscope insertion head, sets the headstock as a split structure including a first connecting seat and a second connecting seat. The first and second connecting seats support other functional components of the endoscope insertion head or serve as the mounting base for these components. During assembly, unlike sequentially installing components on a single endstock, the first and second connecting components can be assembled independently or simultaneously, effectively shortening the glue curing time and improving the assembly efficiency of the endoscope insertion head. Furthermore, the subsequent splicing of the first and second connecting seats is a component-to-component connection. Compared to existing screw-based connections, this structure effectively reduces the number of screws used, which is beneficial for the miniaturized design of the endoscope insertion head and improved assembly efficiency.

[0013] On the other hand, this solution sets the installation space and related channels to be located on the first and second connecting seats respectively. The first connecting component is a light-guiding and imaging component with complete light-guiding and imaging functions, and the second connecting component is a pipeline integration component with complete channel functions. After the first connecting component is assembled, its optical performance (typically including field of view, optical clarity, etc.) and sealing performance can be tested. If the test results show insufficient optical performance or sealing performance due to installation accuracy, glue application, or other reasons, the first connecting component can be reworked. Similarly, after the second connecting component is assembled, its sealing performance can be tested. If the sealing performance is insufficient due to glue application or other reasons, the second connecting component can be reworked. Therefore, this solution provides a basis for individual performance testing of each component at the endoscope insertion head, avoiding the need for complete disassembly, removal of glue and screws, and reassembly when performance testing is found to be substandard after the endoscope insertion head is assembled. This solution effectively improves the efficiency of the assembly process from the perspective of assembly rework.

[0014] On the other hand, by setting the installation space and related channels to be located on the first connecting seat and the second connecting seat respectively, the assembly of the first connecting component and the second connecting component can be carried out independently without affecting each other. Compared with the integral head end seat, each component has a relatively spacious external assembly operation space during assembly. Therefore, this solution can effectively ensure the assembly quality of each component 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 miniaturization design of the endoscope insertion head.

[0015] On the other hand, this solution includes the slot and the protrusion. In this way, after the first connecting component and the second connecting component are assembled, the slot and the protrusion can be used to quickly complete the positioning and engagement of the two connecting components, achieving high-efficiency assembly. At the same time, the slot and the protrusion can be used to achieve anti-rotation constraint of the first connecting component and the second connecting component. Based on the simple structure, the light guiding imaging component and the tubing integration component on the endoscope insertion head have a stable and reliable relative positional relationship, ensuring the assembly quality and performance of the endoscope insertion head.

[0016] Meanwhile, the slots and protrusions are both set on the side of the corresponding connecting seats. In this way, the splicing of the above components is a left-right splicing in the radial direction of the insertion head end, rather than a stacking in the axial direction of the insertion head end. This design is intended to adapt to the general structure of the existing insertion head end: the insertion head end has channel openings for water and air channels, auxiliary water supply channels and instrument channels, as well as a light guide window as the front structure of the light source module and a lens as the front structure of the lens module. Therefore, by adopting the left-right splicing method in the radial direction, the first connecting component and the second connecting component can both have corresponding functional parts or openings at the insertion head end. The mating body formed after simple splicing has a conventional shape and structure.

[0017] Furthermore, both the first and second connecting seats have outer surfaces that are arcuate. After the slots and protrusions engage, the outer surfaces of the resulting mating bodies lie on the same cylindrical surface. Further, for the first connecting seat including both fiber optic mounts and lens mounts, a preferred application is that the lens mount is centered relative to the two fiber optic mounts, with the fiber optic mounts located near the outer surface of the first connecting seat. When using a head cap that provides patient comfort upon contact with human tissue (e.g., a head cap made of flexible material, biocompatible PEEK plastic, etc., while the first and second connecting seats are made of rigid material with good structural and shape stability) to provide radial constraint for the two connecting seats, the inner surface of the head cap is cylindrical, and the outer surfaces of the two fiber optic mounts are arcuate and located on the same cylindrical surface. The outer surface of the fiber optic mount matches the inner surface of the head cap. The front end of the second connecting seat is narrower than its rear end, and the front side of the second connecting seat is an arcuate surface that matches the inner surface of the head cap. After assembly, the outer surface of the fiber optic mounting base and the outer surface of the front end of the second connector are located on the same cylindrical surface. The head cap fits onto this cylindrical surface. Furthermore, for the first connector including the fiber optic mounting base and the lens mounting base, the fiber optic mounting base and the lens mounting base are equivalent to three columnar structures located at the front end of the first connector. To enable the first connector and the second connector to have axial positioning function, the second connector is provided with a boss that can be embedded in the gap between the fiber optic mounting base and the lens mounting base. By assembling the rear end of the boss to contact the end face, and then using bonding or other methods to fix the head cap to the first connector and the second connector, the circumferential direction of the corresponding components is constrained by the slot and the protrusion, the axial direction of the corresponding components is constrained by the boss and the end face, and the radial direction of the corresponding components is constrained by the head cap. This allows for an efficient and reliable overall structure that is beneficial to the miniaturization design of the end of the endoscope insertion part. To further reduce the volume of the overall structure, the head cap and the corresponding connector are preferably connected by bonding.

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

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

[0020] The optical fiber channel has a first opening at the front end of the first connector, and the lens mounting space has a second opening at the front end of the first connector, with first openings on both sides of the second opening.

[0021] In practical applications, the above scheme provides a space for fiber optic cable installation, typically with the fiber optic front end flush with the fiber optic channel front end. After processing the fiber end face at the fiber end, a light guide window is fitted. The chip mounting space is used to install the chip module, and the lens mounting space is used to install the lens module. Since the chip module and lens module are used for imaging, a signal connection needs to be established between them. Therefore, a preferred implementation is that the lens mounting space and the chip mounting space are interconnected. The first aperture is used to set the fiber end face and the light guide window, and the second aperture is used to expose the lens of the lens module. Both sides of the second aperture have first apertures to provide good illumination conditions for the imaging area of ​​the lens module using the light source module.

[0022] The first connector is a cylindrical structure, and the chip mounting space is located inside the first connector;

[0023] The first connector has an optical fiber mounting base and a lens mounting base at its front end. Optical fiber mounting bases are provided on both sides of the lens mounting base. The lens mounting space is located in the lens mounting base. The second opening is located at the front end of the lens mounting base. Each optical fiber mounting base has an optical fiber channel. Each optical fiber mounting base has a first opening at its front end.

[0024] In the above scheme, the chip mounting space is set inside the first connector. On the one hand, the first connector provides protection against external forces for the chip module in the chip mounting space. Specifically, after the chip module is inserted, potting and curing are performed to prevent the chip module components and solder points from loosening due to the pulling of the connection structure between the endoscope insertion head and the snake tube during bending. This plays a role in protecting the chip module. On the other hand, when potting compound is needed to encapsulate the chip module in the chip mounting space, the chip mounting space provides a relatively closed potting area to facilitate the smooth implementation of potting compound injection. The fiber optic mounting base and lens mounting base are used to configure the fiber optic channel, the first aperture, the lens mounting space and the second aperture on the first connector, so that the first connecting component has a light guide window and a lens located at the insertion head.

[0025] A preferred implementation is that the rear end of the first connector has a plug-in socket with three parallel mounting slots. Among the three mounting slots, the middle mounting slot extends into the interior of the first connector as a chip mounting space, and the mounting slots on both sides serve as optical fiber mounting slots that are connected to the optical fiber channel.

[0026] The first opening is crescent-shaped with the concave side facing the inside of the first connecting seat, and each first opening is equipped with a crescent-shaped light guide window.

[0027] In the above scheme, by setting both the first aperture and the light guide window to be crescent-shaped, compared with the traditional circular fiber end face and light guide window, the light guide area is guaranteed by the fiber end face area and the light guide window area, thereby reducing the impact of the light guide imaging component on the outer diameter of the insertion part head, which is conducive to the miniaturization design of the insertion part.

[0028] It also includes a light source module, which includes an optical fiber installed in the optical fiber channel, and each first aperture is equipped with an optical fiber.

[0029] It also includes a chip module, which is encapsulated in the chip mounting space using potting compound;

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

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

[0032] The second connecting seat is equipped with a water and air pipe, a secondary water supply pipe, and an instrument channel pipe. Each of the three pipes has one end fixedly connected to the second connecting seat and the other end is provided with an annular protrusion.

[0033] The annular protrusion is an annular structure located on the outside of each and extending around the circumference of each.

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

[0035] The above solution provides a specific configuration of the second connector. The water / air connector, auxiliary water supply connector, and instrument channel connector respectively provide the water / air channel, auxiliary water supply channel, and instrument channel. Specifically, the second connector, water / air connector, auxiliary water supply connector, and instrument channel connector can be integrated into a single structure, or they can be separate components connected by bonding, welding, or threaded connections to form an assembly. Of these three components, the water / air connector has an annular protrusion at one end for connection to the water / air pipeline, the auxiliary water supply connector has an annular protrusion at one end for connection to the auxiliary water supply pipeline, and the instrument channel connector has an annular protrusion at one end for connection to the instrument channel pipeline. The annular protrusions and annular grooves serve as tenon and mortise structures on each component, respectively, to enhance the reliability of the connection between each component and its corresponding pipeline (water and gas pipelines, auxiliary water supply pipelines, and instrument channel pipelines generally use flexible pipes, which are inserted into the outside of the corresponding connecting pipe after expansion or softening). Simultaneously, the annular grooves can act as adhesive reservoirs when connecting each component to its corresponding pipeline. Before connection, the annular grooves hold uncured adhesive, allowing it to adhere to the connecting pipe after insertion. This further enhances the reliability of both the connection and the seal between the component and the pipeline. It is easy to understand that the number of annular protrusions on each component is greater than or equal to two, ensuring that at least one annular groove serving as the adhesive reservoir is formed on each component. Furthermore, to further optimize the connection reliability between each component and its corresponding pipeline, the outer diameter of the annular protrusion at the end of each component is set to be larger than the outer diameter of the other annular protrusions.

[0036] Each of the orifices has an enlarged section at one end with an annular protrusion. The enlarged section is a tapered section, wherein the end with the larger diameter of the tapered section is located on the orifice side.

[0037] Each component is inserted into the second connector via a stepped hole. The ends of each component are pressed against the stepped surface of the stepped hole, and the sides of each component are sealed to the stepped hole via an adhesive layer. The end of each component with an annular protrusion is exposed outside the rear end of the second connector.

[0038] In the above scheme, the enlarged section on the water-gas connector is used to optimize the flow pattern of fluids (water and gas) at the connection point between the water-gas pipeline and the water-gas connector, reducing the resistance of water and gas entering the water-gas connector through the water-gas pipeline. The enlarged section on the auxiliary water supply connector is used to optimize the flow pattern of fluids (water) at the connection point between the auxiliary water supply pipeline and the auxiliary water supply connector, reducing the resistance of water entering the auxiliary water supply connector through the auxiliary water supply pipeline. The enlarged section on the instrument channel connector is used to improve the smoothness of instruments entering the instrument channel connector from the instrument channel pipeline. Simultaneously, the above scheme provides a specific connection method between each connector and the second connecting seat. The stepped surface is used to determine the insertion depth of each connector on the second connecting seat. The adhesive layer provides a connection method that is advantageous for the miniaturized design of the insertion head structure, while also providing a reliable connection and sealing relationship. The exposed positions of the annular protrusions are designed to facilitate easy connection with the corresponding connector.

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

[0040] The above solution is as follows: At the tip of the endoscope insertion section, relative to the mating body, a head cap is also included, fixed to and surrounding the front end of the mating body. This allows the head cap to be made of a different material from the first and second connecting seats, such as a flexible material, thereby improving the patient's tactile experience of the insertion section's head structure and ensuring high-quality and efficient completion of diagnosis and treatment. A preferred implementation is a cap-like structure with an end plate and side panels. The end plate is located at the front end of the mating body and has multiple through holes. These through holes are used to accommodate the light guide window, lens module, water / air channel, secondary water delivery channel, and instrument channel, respectively. The side panels surround the front side of the mating body, thus providing comprehensive protection for the patient through the head cap and reducing the possibility of scratches or stress reactions.

[0041] This solution also relates to an endoscope, which includes the endoscope insertion head structure as described in any of the above claims.

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

[0043] This solution also relates to a method for assembling the tip structure of an endoscope insertion section, which is the assembly method for the tip structure of an endoscope insertion section as described in any of the above claims, and includes the following steps:

[0044] S1. Obtain a first connecting component and a second connecting component, wherein the first connecting component includes a first connecting base and a light source module, a chip module and a lens module installed in the installation space; the second connecting component includes a second connecting base and a water-air pipe, a secondary water supply pipe and an instrument channel connector respectively connected to the water-air channel, the secondary water supply channel and the instrument channel.

[0045] S2. Perform sealing and optical performance tests on the first connecting component, perform sealing tests on the second connecting component, rework the first and second connecting components that fail the tests, and perform a pass / fail test on the reworked first and second connecting components again.

[0046] S3. Assemble the first and second connecting components that have passed the inspection, specifically by assembling the first and second connecting seats so that the slot and the protrusion cooperate.

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

[0048] This utility model 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 improving the assembly efficiency of the endoscope insertion head. At the same time, this structure can effectively reduce the number of screws used, which is beneficial to the miniaturization 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 for complete disassembly, removal of glue and screws, and reassembly when performance testing fails after the endoscope insertion head is assembled and repair is required. 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 each component at the tip of the endoscope insertion section; at the same time, since the first connecting component and the second connecting component are assembled independently and then spliced ​​together, 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 miniaturization design of the tip of the endoscope insertion section.

[0052] This solution not only enables the slots and protrusions to quickly position and engage the two connecting components, achieving high-efficiency assembly, but also ensures a stable and reliable relative position between the light-guiding imaging component and the tubing integration component on the endoscope insertion head, based on a simple structure, thus guaranteeing the assembly quality and performance of the endoscope insertion head. Attached Figure Description

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

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

[0055] Figure 3 for Figure 1 The exploded view of the first connecting component in the structure shown;

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

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

[0058] Figure 6 for Figure 1 The exploded view of the second connecting component in the structure shown;

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

[0060] Figure 8 for Figure 6 Cross-sectional view of the central and auxiliary water supply pipes;

[0061] Figure 9 for Figure 6 Cross-sectional view of the central mechanical channel connector;

[0062] Figure 10 for Figure 6 Front view of the second connecting seat;

[0063] Figure 11 for Figure 6 Front view of the second connector.

[0064] The reference numerals in the figure are as follows: 1. First connecting component; 11. Chip module; 12. First connecting seat; 13. Lens module; 14. Light guide window; 15. Lens mounting seat; 16. Fiber optic mounting seat; 17. Fiber optic end face; 18. Slot; 2. Head end cap; 3. Second connecting component; 31. Water and gas pipeline; 32. Auxiliary water supply pipeline; 33. Instrument channel pipeline; 34. Water and gas connection pipe; 35. Auxiliary water supply connection pipe; 36. Instrument channel connection pipe; 37. Annular protrusion; 38. Annular groove; 39. Second connecting seat; 310. Slot protrusion; 311. Expanded hole section. Detailed Implementation

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

[0066] Example 1:

[0067] like Figures 1 to 11 As shown, an endoscope insertion head structure includes a head base, which includes a first connecting seat 12 and a second connecting seat 39. The first connecting seat 12 is provided with an installation space for mounting a light source module, a chip module 11, and a lens module 13. The second connecting seat 39 is provided with a water-air channel, a secondary water delivery channel, and an instrument channel.

[0068] Of the first connecting seat 12 and the second connecting seat 39, one has a slot 18 on its side and the other has a protrusion 310 on its side. The slot 18 and the protrusion 310 are adapted to each other, and the first connecting seat 12 and the second connecting seat 39 cooperate 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 constraint members to prevent the first connecting seat 12 and the second connecting seat 39 from rotating relative to each other.

[0069] In practical application, the first connecting seat 12 serves as the mounting base for the light source module, chip module 11, and lens module 13, forming a first connecting component 1 that acts as a light-guiding imaging assembly. The second connecting seat 39 connects the water and gas pipeline 31, the auxiliary water supply pipeline 32, and the instrument channel pipeline 33. Specifically, the water and gas pipeline 31, the auxiliary water supply pipeline 32, and the instrument channel pipeline 33 are respectively connected to the water and gas channel, the auxiliary water supply channel, and the instrument channel to form a second connecting component 3 that acts as a pipeline integration assembly. During assembly, 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, the first connecting component 1 and the second connecting component 3 are assembled together using the latch protrusion 310 and the latch slot 18 via the first connecting seat 12 and the second connecting seat 39.

[0070] Unlike existing technologies, this solution, based on the functions of each component at the endoscope insertion head, sets the headstock as a split structure including a first connecting seat 12 and a second connecting seat 39. The first connecting seat 12 and the second connecting seat 39 are used to support other functional components of the endoscope insertion head or as the mounting base for these components. During assembly, unlike sequentially installing components on an integral headstock, the first connecting component 1 and the second connecting component 3 can be assembled independently or simultaneously, effectively shortening the glue curing time in the entire assembly process and improving the assembly efficiency of the endoscope insertion head. Furthermore, the subsequent splicing of the first connecting seat 12 and the second connecting seat 39 is a connection between components. Compared to existing screw connections, this structure effectively reduces the number of screws used, which is beneficial for the miniaturized design of the endoscope insertion head and improved assembly efficiency.

[0071] On the other hand, this solution sets the installation space and related channels to be located on the first connector 12 and the second connector 39, respectively. Simultaneously, the first connector 1 is a light-guiding and imaging component with complete light-guiding and imaging functions, and the second connector 3 is a pipeline integration component with complete channel functions. After the first connector 1 is assembled, its optical performance (typically including field of view, optical sharpness, etc.) and sealing performance can be tested. If the test results show insufficient optical performance or sealing performance due to installation accuracy, adhesive application, or other reasons, the first connector 3 can be further tested. After the second connecting component 3 is assembled, its sealing performance can be tested. If the sealing performance is insufficient due to reasons such as glue application, the second connecting component 3 can be reworked. 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 reassembly when performance testing is found to be unqualified after the endoscope insertion head is assembled. This solution can effectively improve the efficiency of the assembly process from the perspective of assembly rework.

[0072] On the other hand, by setting the installation space and related channels to be 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 carried out independently and without affecting each other, compared with the integral head end seat, each component has a relatively spacious external assembly operation space during assembly. Therefore, this solution can effectively ensure the assembly quality of each component of the endoscope insertion head. 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 miniaturization design of the endoscope insertion head.

[0073] On the other hand, this solution is configured to include the slot 18 and the protrusion 310. In this way, after the first connecting component 1 and the second connecting component 3 are assembled, the slot 18 and the protrusion 310 can be used to quickly complete the positioning and cooperation of the two connecting components to achieve high-efficiency assembly. At the same time, the slot 18 and the protrusion 310 can be used to achieve anti-rotation constraint of the first connecting component 1 and the second connecting component 3. Based on the simple structure, the light guiding imaging component and the tubing integration component on the endoscope insertion head have a stable and reliable relative positional relationship, ensuring the assembly quality and performance of the endoscope insertion head.

[0074] Meanwhile, the slot 18 and the protrusion 310 are both set on the side of the corresponding connecting seat. In this way, the splicing of the above components is a left-right splicing in the radial direction of the insertion head end, rather than a stacking in the axial direction of the insertion head end. This design is intended to adapt to the general structure of the existing insertion head end: the insertion head end has channel openings for water and air channels, auxiliary water supply channels and instrument channels, as well as a light guide window 14 as the front structure of the light source module, and a lens as the front structure of the lens module 13. Therefore, by adopting the left-right splicing method in the radial direction, the first connecting component 1 and the second connecting component 3 can both have corresponding functional parts or openings at the insertion head end. The mating body formed after simple splicing has a conventional shape and structure.

[0075] Furthermore, both the first connecting seat 12 and the second connecting seat 39 have outer surfaces that are arc-shaped. After engaging with the slot 18 and the protrusion 310, the outer surfaces of the resulting mating bodies are located on the same cylindrical surface. Furthermore, for the first connecting seat 12, which includes an optical fiber mounting seat 16 and a lens mounting seat 15, a preferred application is that the lens mounting seat 15 is centrally located relative to the two optical fiber mounting seats 16, with the optical fiber mounting seats 16 positioned close to the outer surface of the first connecting seat 12. This is achieved by using a head cap 2 (e.g., one that provides better patient comfort after contact with human tissue). For example, if the head cap 2 is made of a flexible material, and the first connector 12 and the second connector 39 are made of rigid materials with good structural and shape stability, and radial constraints are provided for the two connectors, the inner surface of the head cap 2 is set to be a cylindrical surface, and the outer surfaces of the two fiber optic mounting seats 16 are arc surfaces located on the same cylindrical surface. The outer surfaces of the fiber optic mounting seats 16 fit with the inner surface of the head cap 2. The front end of the second connector 39 is narrower than the rear end, and the front side of the second connector 39 is an arc surface that fits with the inner surface of the head cap 2. After the first connector 12 and the second connector 39 are fitted together... The outer surface of the fiber optic mounting base 16 and the outer surface of the front end of the second connecting base 39 are located on the same cylindrical surface. The head end cap 2 fits onto this cylindrical surface. Furthermore, for the first connecting base 12 including the fiber optic mounting base 16 and the lens mounting base 15, the fiber optic mounting base 16 and the lens mounting base 15 are equivalent to three columnar structures located at the front end of the first connecting base 12. To enable the first connecting base 12 and the second connecting base 39 to have axial positioning functions, the second connecting base 39 is configured to have a boss that can be embedded in the gap between the fiber optic mounting base 16 and the lens mounting base 15. By assembling the rear end of the above-mentioned boss into contact with the end face, and then using methods such as bonding, the head end cap 2 is fixedly connected to the first connecting seat 12 and the second connecting seat 39. In this way, the slot 18 and the protrusion 310 form a constraint in the circumferential direction of the corresponding parts, the boss and the end face form a constraint in the axial direction of the corresponding parts, and the head end cap 2 forms a constraint in the radial direction of the corresponding parts. Thus, an overall structure that is beneficial to the miniaturization design of the end of the endoscope insertion part can be formed efficiently and reliably. In order to further reduce the volume of the overall structure, the head end cap 2 and the corresponding connecting seat are preferably connected by bonding.

[0076] Example 2:

[0077] This embodiment is a further refinement of embodiment 1:

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

[0079] The optical fiber channel has a first opening at the front end of the first connector 12, and the lens mounting space has a second opening at the front end of the first connector 12, with first openings on both sides of the second opening.

[0080] In practical applications, the above scheme provides a space for setting up optical fibers. Generally, the fiber optic front end is flush with the fiber optic channel front end. After processing the fiber end face 17 at the fiber end, a light guide window 14 is fitted. The chip mounting space is used to install the chip module 11, and the lens mounting 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 them. Therefore, a preferred implementation is that the lens mounting space and the chip mounting space are connected. The first aperture position is used to set up the fiber end face 17 and the light guide window 14, and the second aperture is used to expose the lens of the lens module 13. The second aperture has a first aperture on both sides to provide good illumination conditions for the imaging area of ​​the lens module 13 using the light source module.

[0081] Example 3:

[0082] This embodiment is a further refinement of embodiment 2:

[0083] The first connector 12 has a cylindrical structure, and the chip mounting space is located inside the first connector 12;

[0084] The first connector 12 is provided with an optical fiber mounting base 16 and a lens mounting base 15 at its front end. Optical fiber mounting bases 16 are provided on both sides of the lens mounting base 15. The lens mounting space is located in the lens mounting base 15. The second opening is located at the front end of the lens mounting base 15. Each optical fiber mounting base 16 has an optical fiber channel. Each optical fiber mounting base 16 has a first opening at its front end.

[0085] In the above scheme, the chip mounting space is set inside the first connector 12. On the one hand, the first connector 12 provides protection against external forces for the chip module 11 in the chip mounting space. Specifically, after the chip module 11 is inserted, potting and curing are performed to prevent the chip module 11 from becoming loose due to the pulling of the connection structure between it and the snake tube during the bending of the endoscope insertion head. This plays a role in protecting the chip module 11. On the other hand, when potting glue is needed to encapsulate the chip module 11 in the chip mounting space, the chip mounting space provides a relatively closed potting area to facilitate the smooth implementation of potting glue. The fiber optic mounting base 16 and the lens mounting base 15 are used to configure the fiber optic channel, the first aperture, the lens mounting space and the second aperture on the first connector 12, so that the first connecting component 1 has a light guide window 14 and a lens located at the insertion head.

[0086] A preferred implementation is that the rear end of the first connector 12 has a plug-in socket, and the plug-in socket is provided with three parallel mounting slots. Among the three mounting slots, the part of the mounting slot in the middle that extends into the interior of the first connector 12 serves as the chip mounting space, and the mounting slots on both sides serve as optical fiber mounting slots that are connected to the optical fiber channel.

[0087] Example 4:

[0088] This embodiment is a further refinement of embodiment 2:

[0089] The first opening is crescent-shaped with the concave side facing the inside of the first connecting seat 12, and each first opening is equipped with a crescent-shaped light guide window 14.

[0090] In the above scheme, by setting both the first aperture and the light guide window 14 as crescent-shaped, compared with the traditional circular fiber end face 17 and light guide window 14, the light guide area is guaranteed by the area of ​​the fiber end face 17 and the area of ​​the light guide window 14, thereby improving the influence of the light guide imaging component on the outer diameter of the insertion part head and thus facilitating the miniaturization design of the insertion part.

[0091] Example 5:

[0092] This embodiment is a further refinement of embodiment 2:

[0093] It also includes a light source module, which includes an optical fiber installed in the optical fiber channel, and each first aperture is equipped with an optical fiber.

[0094] It also includes a chip module 11, which is encapsulated in the chip mounting space by potting compound;

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

[0096] In the above scheme, the light source module, chip module 11, and lens module 13 are installed on the first connector 12 to form the first connector component 1 mentioned above.

[0097] Example 6:

[0098] This embodiment is a further refinement of embodiment 1:

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

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

[0101] The number of 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 that object, with annular grooves 38 formed between adjacent annular protrusions 37.

[0102] The above solution provides a specific configuration of the second connecting seat 39. The water / air pipe 34, auxiliary water supply pipe 35, and instrument channel pipe 36 respectively provide the water / air channel, auxiliary water supply channel, and instrument channel. Specifically, the second connecting seat 39, water / air pipe 34, auxiliary water supply pipe 35, and instrument channel pipe 36 can be an integral structure, or they can be different components connected by bonding, welding, or threaded connections to form an assembly. Of the three, the end of the water / air pipe 34 with the annular protrusion 37 is used to connect to the water / air pipe 31; the end of the auxiliary water supply pipe 35 with the annular protrusion 37 is used to connect to the auxiliary water supply pipe 32; and the end of the instrument channel pipe 36 with the annular protrusion 37 is used to connect to the instrument. The channel pipe 33, with its annular protrusions 37 and annular grooves 38 serving as tenon and mortise structures respectively, enhances the reliability of the connection between each component and its corresponding pipe (the water / gas pipe 31, auxiliary water supply pipe 32, and instrument channel pipe 33 generally use flexible pipes, which are inserted into the outside of the corresponding connecting pipe after expansion or softening). Simultaneously, the annular grooves 38 serve as adhesive reservoirs when connecting each component to its corresponding pipe. Before connection, uncured adhesive is contained within the annular grooves 38. After connection, the adhesive in the annular grooves 38 bonds the connecting pipe to the pipe, further enhancing the reliability of the connection and the sealing reliability. It is easily understood that the number of annular protrusions 37 on each component is greater than or equal to two, ensuring that at least one annular groove 38 serving as the adhesive reservoir is formed on each component. Furthermore, to further optimize the connection reliability between each component and its corresponding pipeline, the outer diameter of the annular protrusion 37 located at the end of each component is set to be larger than the outer diameter of other annular protrusions 37.

[0103] Example 7:

[0104] This embodiment is a further refinement of embodiment 6:

[0105] Each of the orifices with an annular protrusion 37 has an enlarged section 311 at one end, the enlarged section 311 being a tapered section, wherein the end of the tapered section with a larger diameter is located on the orifice side;

[0106] Each component is inserted into the second connector 39 through a stepped hole. The ends of each component are pressed against the stepped surface of the stepped hole, and the sides of each component are sealed to the stepped hole through an adhesive layer. The end of each component with an annular protrusion 37 is exposed outside the rear end of the second connector 39.

[0107] In the above scheme, the enlarged section 311 on the water-gas connector 34 is used to optimize the flow pattern of fluids (water and gas) at the docking position between the water-gas pipeline 31 and the water-gas connector 34, reducing the resistance of water and gas entering the water-gas connector 34 through the water-gas pipeline 31. The enlarged section 311 on the auxiliary water supply connector 35 is used to optimize the flow pattern of fluids (water) at the docking position between the auxiliary water supply pipeline 32 and the auxiliary water supply connector 35, reducing the resistance of water entering the auxiliary water supply connector 35 through the auxiliary water supply pipeline 32. The enlarged section 311 on the instrument channel connector 36 is used to improve the smoothness of instruments entering the instrument channel connector 36 from the instrument channel pipeline 33. At the same time, the above scheme provides a specific connection form between each connector and the second connecting seat 39. The stepped surface is used to position the insertion depth of each connector on the second connecting seat 39. The adhesive layer provides a connection form that is beneficial to the miniaturization design of the insertion head structure, while providing a reliable connection and sealing relationship. The exposed position of the annular protrusion 37 of each connector is designed to facilitate the connection with the corresponding connector.

[0108] Example 8:

[0109] This embodiment is a further refinement of embodiment 1:

[0110] The head end seat also includes a head end cover 2, which serves as the front end structure of the endoscope insertion head end structure: for the mating 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 mating body and surrounds the front end of the mating body.

[0111] The above solution is as follows: At the tip of the endoscope insertion section, relative to the mating body, a head cap 2 is fixed to the mating body and surrounds its front end. Thus, the head cap 2 can be made of a different material from the first connecting seat 12 and the second connecting seat 39, such as a flexible material. This improves the patient's sensory experience of the insertion section's head structure and ensures high-quality and efficient completion of diagnosis and treatment. A preferred implementation is that the head cap 2 is a cap-like structure with an end plate and side panels. The end plate is located at the front end of the mating body and has multiple through holes. These through holes are used to accommodate the light guide window 14, lens module 13, water and air channel, auxiliary water delivery channel, and instrument channel, respectively. The side panels surround the front side of the mating body, thus providing comprehensive protection for the patient through the head cap 2 and reducing the possibility of scratches or stress reactions.

[0112] Example 9:

[0113] This embodiment provides an endoscope based on embodiment 1, which includes the endoscope insertion head structure described in embodiment 1.

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

[0115] Example 10:

[0116] This embodiment provides a method for assembling the end-piece structure of an endoscope insertion section based on Embodiment 1. This method, which is the assembly method for the end-piece structure of the endoscope insertion section described in Embodiment 1, includes the following steps:

[0117] S1. Obtain the first connecting component 1 and the second connecting component 3, wherein the first connecting component 1 includes a first connecting base 12 and a light source module, a chip module 11 and a lens module 13 installed in the installation space; the second connecting component 3 includes a second connecting base 39 and a water and air pipe 31, a secondary water supply pipe 32 and an instrument channel connector 36 respectively connected to the water and air channel, the auxiliary water supply channel and the instrument channel.

[0118] S2. Perform sealing and optical performance tests on the first connecting component 1, perform sealing tests on the second connecting component 3, rework the first connecting component 1 and the second connecting component 3 that fail the tests, and perform a pass / fail test on the reworked first connecting component 1 and the second connecting component 3 again.

[0119] S3. Assemble the first connecting component 1 and the second connecting component 3 that have passed the inspection. Specifically, assemble the first connecting seat 12 and the second connecting seat 39 to form the slot 18 and the protrusion 310 that cooperate.

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

[0121] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific embodiments of the present invention are limited to these descriptions. For those skilled in the art, other embodiments derived without departing from the technical solution of the present invention should be included within the protection scope of the present invention.

Claims

1. An endoscope insertion portion head end structure comprising a head end seat, characterized by, The head end seat comprises a first connecting seat (12) and a second connecting seat (39), the first connecting seat (12) is provided with a mounting space for mounting a light source module, a chip module (11) and a lens module (13); the second connecting seat (39) is provided with a water and gas passage, a secondary water supply passage and an instrument passage; One side of one of the first connecting seat (12) and the second connecting seat (39) is provided with a clamping groove (18), and the other side is provided with a clamping convex (310), the clamping groove (18) and the clamping convex (310) are matched, the first connecting seat (12) and the second connecting seat (39) are matched, the clamping convex (310) is embedded in the clamping groove (18), and meanwhile, the clamping groove (18) and the clamping convex (310) serve as anti-rotation constraints for preventing the first connecting seat (12) and the second connecting seat (39) from rotating relative to each other.

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

3. An endoscope insertion portion tip structure according to claim 2, characterized by The first connecting seat (12) is a cylindrical structure, and the chip mounting space is located on the inner side of the first connecting seat (12); The front end of the first connecting seat (12) is provided with a fiber mounting seat (16) and a lens mounting seat (15), the two sides of the lens mounting seat (15) are each provided with a fiber mounting seat (16), the lens mounting space is located in the lens mounting seat (15), the second aperture is located at the front end of the lens mounting seat (15), each fiber mounting seat (16) has a fiber channel, and the front end of each fiber mounting seat (16) has a first aperture.

4. An endoscope insertion portion tip structure according to claim 2 or 3, characterized in that The shape of the first aperture is a crescent shape with the concave side facing the inner side of the first connecting seat (12), and each first aperture is matched with a crescent-shaped light guide window (14).

5. An endoscope insertion portion tip structure according to claim 2 or 3, characterized in that It also comprises a light source module, the light source module comprises an optical fiber mounted in the fiber channel, and each first aperture is configured with an optical fiber; It also comprises a chip module (11), the chip module (11) is filled in the chip mounting space by filling glue; It also comprises a lens module (13), the lens module (13) is mounted in the lens mounting space.

6. An endoscope insertion portion tip structure according to claim 1, wherein The second connecting seat (39) is provided with a water and gas connector (34), a secondary water supply connector (35) and an instrument passage connector (36), each of the three connectors is fixedly connected to the second connecting seat (39) at one end and is provided with an annular protrusion (37) at the other end; The annular protrusion (37) is an annular structure located on the outer side of each and extending in the circumferential direction of each; The number of annular protrusions (37) on each is greater than or equal to 2, and the annular protrusions (37) on each are spaced apart along the axial direction of the same, and an annular groove (38) is formed between adjacent annular protrusions (37).

7. An endoscope insertion portion tip structure according to claim 6, wherein The orifice of each end provided with the annular protrusion (37) has an expanded hole section (311), which is a tapered hole section, wherein the end with a larger diameter of the tapered hole section is located at the orifice side; Each is inserted into the second connecting seat (39) through the stepped hole arranged on the second connecting seat (39), wherein the end of each is in normal pressure on the stepped surface of the stepped hole, the side surface of each is in sealed connection with the stepped hole through the adhesive layer, and the end of each provided with the annular protrusion (37) is exposed outside the rear end of the second connecting seat (39).

8. The endoscope insertion portion tip structure according to claim 1, wherein The head end seat further comprises a head end cover (2) as a front end structure of the endoscope insertion part head end structure: for the cooperation body formed by the cooperation of the first connecting seat (12) and the second connecting seat (39), the head end cover (2) is fixed at the front end of the cooperation body and surrounds the front end of the cooperation body.

9. An endoscope characterized by comprising: An endoscope insertion part head end structure as claimed in any one of claims 1 to 8.

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