Circuit board assembly structure, endoscope handle, and endoscope

Abstract

The utility model provides a kind of circuit board assembly structure, endoscope handle and endoscope, it is related to endoscope technical field, the utility model includes circuit board component and restraint component, wherein: the circuit board component includes circuit board and shielding piece of the circuit board outside being set;The restraint component is used to fix the circuit board component to handle shell, and the restraint component and the shielding piece are mutually avoided arrangement, compared with prior art, can effectively improve image display quality, reduce the noise point interference in image, enhance picture stability, avoid the problems such as image blur, frame skipping or signal interference, so as to guarantee the image transmission stability and real-time performance of endoscope in clinical operation.

Description

Technical Field

[0001] This utility model relates to the field of endoscope technology, and in particular to a circuit board assembly structure, an endoscope handle, and an endoscope. Background Technology

[0002] Endoscopes, as medical devices commonly used in clinical diagnosis and treatment, typically include an insertion section, a handle, and a display device. The handle, as the core component for direct operator control of the endoscope, includes control components such as levers and buttons for adjusting the bending direction of the insertion section. It is usually connected to a display device to show images captured by a camera module located at the distal end of the insertion section, allowing the operator to visually assess the internal condition of the body cavity and make appropriate operational decisions. With the increasing demands for high-definition image acquisition and real-time display, endoscopic systems place higher requirements on the stability of signal transmission.

[0003] In related technologies, circuit boards typically employ shielding structures to enhance signal transmission's anti-interference capabilities, thereby improving image display quality. However, the applicant discovered through long-term use and testing that despite the shielding layer around the circuit board, the image display quality still fell short of expectations, exhibiting issues such as image noise, unstable visuals, or signal loss. Utility Model Content

[0004] The purpose of this application is to provide a circuit board assembly structure, an endoscope handle, and an endoscope to solve the aforementioned technical problems existing in the prior art.

[0005] In a first aspect, this application provides a circuit board assembly structure, which adopts the following technical solution:

[0006] A circuit board assembly structure for use in an endoscope, the circuit board assembly structure comprising a circuit board assembly and a restraint assembly, wherein:

[0007] The circuit board assembly includes a circuit board and a shielding component sleeved on the outside of the circuit board;

[0008] The restraint assembly is used to fix the circuit board assembly to the handle housing, and the restraint assembly and the shielding component are arranged to avoid each other.

[0009] Secondly, this application provides an endoscope handle, which adopts the following technical solution:

[0010] An endoscope handle includes a handle housing and a circuit board assembly structure as described above, wherein the circuit board assembly structure is disposed within the handle housing.

[0011] Thirdly, this application provides an endoscope, which adopts the following technical solution:

[0012] An endoscope includes an endoscope handle and an insertion portion as described in the above-described scheme, wherein the proximal end of the insertion portion is connected to the endoscope handle.

[0013] This utility model has the following advantages and beneficial effects:

[0014] This invention optimizes the installation method of the circuit board assembly, achieving a stable fixation of the circuit board assembly within the handle housing without compromising the integrity of the shielding structure. Its core technology lies in the structural design of the restraint component, which avoids penetrating or compressing the shielding component during fixation, thus effectively maintaining the integrity and continuity of the shielding layer.

[0015] This avoidance-based fixing method circumvents the drawbacks of traditional through-fixing methods such as screws and rivets, which can easily damage the shielding material, ensuring that the shielding structure is not destroyed. While ensuring stable installation of the circuit board, it significantly enhances the shielding effect, allowing the electromagnetic shielding performance to be fully utilized, effectively suppressing interference problems in the image signal transmission process, significantly reducing noise, frame skipping, and image blurring, and further improving the stability and clarity of the endoscopic image output. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram designed to show the overall structure of an endoscope.

[0018] Figure 2 This is a structural diagram intended to show the circuit board assembly and the restraint assembly.

[0019] Figure 3 yes Figure 2 Enlarged view of part A in the middle.

[0020] Figure 4 This is a structural diagram intended to show the first limiting component and the connecting column.

[0021] Figure 5 It is an exploded view designed to show circuit board components and protective layers.

[0022] The diagram is marked as follows:

[0023] 100, Circuit board assembly; 110, Circuit board; 111, Wiring harness; 120, Shielding component; 121, Opening; 200, Restraint assembly; 220, Protective layer; 221, Connecting part; 230, Connector; 231, Fastener; 300, Endoscope handle; 310, Handle housing; 311, Restraint frame; 312, Restraint groove; 320, Connecting post; 330, First limiting component; 331, Assembly post; 400, Guide component; 410, Guide block; 500, Steel wire rope; 510, Traction wheel; 600, Insertion part. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0026] In the various embodiments of this application, "near end" and "far end" refer to the distance of each component from the user in the usage environment. The end closer to the user is designated as the "near end", and the end farther from the user is designated as the "far end".

[0027] In clinical endoscopic procedures, endoscopes, as high-end precision devices integrating image acquisition, transmission, and control functions, directly affect the accuracy of doctors' diagnoses and the safety of surgeries through their image quality. Endoscopes typically consist of an insertion section, a handle, and an image processing and display device at the rear. The handle not only houses control levers and buttons but also encapsulates a large number of circuit systems for image acquisition and signal transmission. With the trend towards higher resolution and lower latency in medical imaging, the integration of circuit boards within the endoscope handle is continuously increasing, leading to correspondingly higher requirements for electromagnetic shielding and anti-interference performance.

[0028] To address the issue of circuit boards being susceptible to electromagnetic interference, existing technologies commonly employ the method of placing a shielding layer around the circuit board to improve system stability. However, through repeated testing and feedback from actual surgeries, the applicant discovered that the presence of a shielding layer alone is insufficient to ensure high-quality image output. The device may still experience problems such as image interference, noise flickering, or frame skipping, and in severe cases, it may even cause momentary interruption of the image signal, affecting the continuity of the doctor's field of vision.

[0029] In-depth analysis revealed that one of the core reasons for this problem lies in the fact that existing assembly methods typically use rigid fixing methods such as screws to assemble the circuit board assembly inside the handle housing. This penetrating fixing method often requires screws to pass through the shielding body, leading to local cracks or damage to the shielding layer and creating electromagnetic leakage channels. To achieve fixing strength, screws directly penetrate the shielding layer and are fixed to the circuit board structure or its support. While this operation achieves structural positioning, it compromises the integrity of the shielding layer, causing breakpoints or leakage points at the fixing points. This allows local electromagnetic interference signals to penetrate into the system, weakening the shielding performance and inducing image stability issues. This structural defect has not been effectively avoided by existing solutions, becoming a key hidden danger limiting stable image output.

[0030] Therefore, there is an urgent need to propose an improved structure that can achieve stable installation of the circuit board without compromising the shielding integrity, so as to improve the anti-interference capability of the image signal and the stability of the image quality.

[0031] The following is combined with Figures 1 to 5 The present application provides a detailed description of a circuit board assembly structure, endoscope handle, and endoscope through specific embodiments and application scenarios.

[0032] Reference Figure 2 , Figure 3 As shown, a circuit board assembly structure is used in an endoscope. The circuit board assembly structure 110 includes a circuit board assembly 100 and a restraint assembly 200, wherein:

[0033] The circuit board assembly 100 includes a circuit board 110 and a shielding element 120 sleeved on the outside of the circuit board 110. The shielding element 120 is preferably a metal foil material with good conductivity, such as copper foil, tin foil or silver-plated aluminum foil. It can also be a flexible shielding layer made of braided shielding mesh or composite material to meet the electromagnetic interference resistance requirements in different occasions.

[0034] In some embodiments, an insulating film may be added to the inner layer of the shielding member 120 to prevent accidental short circuits between the circuit board 110 and the metal layer, while also improving the mechanical strength of the shielding structure. The shielding member 120 may be wrapped tightly around the circuit board 110, or it may have an overlap portion around the circuit board 110 for grounding, thereby enhancing the overall anti-interference capability.

[0035] The restraint assembly 200 is used to securely connect the circuit board assembly 100 to the mounting cavity of the endoscope handle 300 housing, while avoiding damage to the shield 120 by the avoidance setting with the shield 120, thereby ensuring the integrity and continuous effectiveness of the shielding performance.

[0036] Through the above structural design, the restraint component 200 effectively avoids mechanical damage to the shielding component 120 caused by traditional through-fixing methods (such as screws or rivets directly penetrating the shielding component 120) while ensuring the stable installation of the circuit board assembly 100. Its avoidance design ensures that the shielding component 120 remains continuous or undergoes shearing damage throughout the entire coverage area of ​​the circuit board assembly 100, thereby significantly reducing the risk of localized tearing or failure of the shielding component 120. This, in turn, significantly enhances the protection capability of the circuit board 110 against external electromagnetic interference, suppressing interference phenomena such as signal noise, frame skipping, and image blurring at the source, and enhancing the clarity and continuity of image signal transmission. Simultaneously, the avoidance installation method is simple in structure and highly reliable, avoiding the risk of secondary maintenance and rework due to damage to the shielding component 120, thus improving overall assembly quality and production efficiency.

[0037] In one implementation, the restraint assembly 200 includes a restraint rope, which is wound circumferentially around the outer side of the circuit board assembly 100 and fixedly connected to the handle housing 310 via its connecting end. The winding method can be helical, cross-wound, or loop-wound, flexibly selected according to the geometry of the circuit board 110 and the housing structure to ensure the stability and shock resistance of the overall structure. The restraint rope should preferably be made of non-metallic flexible materials, such as high-strength polyester fiber rope, nylon rope, or medical PE thread, to avoid creating new sources of interference in an electromagnetic environment.

[0038] As an optional implementation, one end of the restraint rope is fixedly connected to the circuit board 110 (by hot pressing, slotting or flexible bonding), and the other end extends out through the circuit board 110 via the wire harness 111 and is connected and fixed to the handle housing 310. This structure can simultaneously serve the dual functions of guiding the wire harness 111 and limiting the circuit board 110, further improving assembly efficiency and structural stability.

[0039] Specifically, the shielding component 120 has an opening 121 for leading out the wire harness 111 of the circuit board 110. This opening 121 is not formed directly on the shielding component 120 by perforation or through-holes, but rather is a gap or winding opening that forms naturally during the wrapping process of the shielding component 120. The opening 121 is usually located at the edge of the shielding component 120, and its structure is such that the wire harness 111 is led out from the edge of the shielding component 120, and the shielding component 120 still keeps the outside of the wire harness 111 in close contact during the wrapping process, avoiding the formation of obvious breaks or shielding blind spots. Because the structure of the opening 121 does not disrupt the continuity of the shielding layer, while the wire harness 111 is led out, the shielding component 120 can still extend along the length of the wire harness 111 to cover a considerable distance, thereby ensuring that the connection area between the circuit board assembly 100 and the wire harness 111 is also under good electromagnetic shielding.

[0040] In another embodiment, the restraint assembly 200 may further include a protective layer 220 and a connector 230. The protective layer 220 is directly applied to the outside of the shielding component 120 to provide additional mechanical protection and stable support for the shielding component 120, preventing tearing, indentation, or other phenomena during assembly or transportation that could affect the shielding performance. The connector 230 is used to connect the protective layer 220 to the handle housing 310 and is offset (avoids) from the shielding component 120 to prevent direct impact on the shielding component 120 body and structural damage.

[0041] In different implementations, the connector 230 can be a quick-release snap-fit ​​structure, snapped into a pre-set limiting groove on the outer wall of the protective layer 220 or directly snapped into the outer wall of the protective layer 220, which is simple in structure and easy to assemble and disassemble; it can also be an adhesive structure, in which the protective layer 220 is fixed to the inside of the shell by medical adhesive or hot melt adhesive, which enhances the fit.

[0042] Reference Figures 3-5 As shown, the protective layer 220 is provided with at least one connecting portion 221. The specific position of the connecting portion 221 is staggered from that of the shielding member 120, that is, the connecting portion 221 avoids directly penetrating the shielding layer, thereby ensuring the continuity and integrity of the shielding member 120. The connecting portion 221 is preferably a reinforcing protrusion, a reinforcing ring, or a locally thickened area to provide better connection support strength.

[0043] As a preferred embodiment, the connecting part 221 is located at the edge of the protective layer 220. On the one hand, this can minimize the impact on the structural integrity of the shield 120, and on the other hand, it facilitates the fixing operation of the connecting part 230 on the housing, thereby improving installation efficiency.

[0044] In some embodiments, the length of the protective layer 220 is preferably greater than the length of the circuit board 110, and it has extended regions at both ends that extend beyond the outline of the circuit board 110, such as symmetrical or asymmetrical ear-shaped portions, stepped portions, or locally thickened flanged areas. The connecting portion 221 can then be arranged on these extended regions, thereby reliably fixing the protective layer 220 to the handle housing 310 without encroaching on the functional area of ​​the circuit board 110. With this design, mounting screws or clips can be used for reinforcement without penetrating the shielding component 120 body, maintaining the integrity of the shielding layer and improving assembly strength.

[0045] When arranging the protective layer 220, the ear-shaped or stepped area extending from the protective layer 220 can be appropriately narrowed. By reducing the cross-sectional size of the extension area, the connecting part 221 can avoid other mechanisms inside the handle housing 310, thus avoiding assembly difficulties caused by space congestion.

[0046] As an optional embodiment, the connecting portion 221 can be arranged at opposite corners, four corners, or symmetrically or asymmetrically along both sides of the length and width directions of the circuit board 110. This arrangement has several advantages:

[0047] Firstly, the connection part 221 is set at the diagonal or four corner positions, which helps to spatially position and constrain the circuit board 110 from multiple directions, forming a stable planar support structure. This can effectively prevent the circuit board 110 from axial or radial shaking or tilting in the handle cavity, and can maintain a stable state even when subjected to operational vibration or transportation impact, thereby ensuring the continuity of signal transmission and the stability of image acquisition.

[0048] Secondly, the placement of the connecting part 221 can be flexibly adjusted according to the distribution of functional components on the circuit board 110, such as avoiding image acquisition chips, high-frequency signal channels, or antenna areas, to prevent signal attenuation or noise interference caused by physical interference or electromagnetic coupling. Especially when assembling the circuit board 110 with high-density wiring, the asymmetrical layout can make full use of the housing space and achieve reliable fixation of the protective layer 220 and the circuit board 110 without increasing structural complexity.

[0049] As an alternative implementation, the connector 230 can be constructed using a single structure or a combination of two or more methods, such as screws, rivets, medical-grade adhesive, or hot melt adhesive. For the circuit board 110 structure that requires disassembly and maintenance, a combination of screws and clips is preferred; while for one-time assembly structures, hot melt adhesive or fast-curing adhesive is recommended to improve efficiency.

[0050] In this embodiment, the connector 230 is a fastener 231, specifically in the form of a screw. The screw passes through the connecting portion 221 of the protective layer 220 and, through engagement with a pre-drilled threaded hole within the handle housing 310, achieves a secure connection with the handle housing 310, thereby reliably installing the circuit board assembly 100 within the handle housing 310. It is noteworthy that the screw's installation position avoids direct contact or penetration with the shielding component 120 during installation, effectively preventing the risk of damage to the continuity of the shielding component 120. Furthermore, to further ensure the avoidance effect, a certain buffer space is reserved between the screw's installation area and the shielding component 120 to prevent contact or compression caused by installation errors or external forces. This design not only considers the installation stability and structural strength of the circuit board assembly 100 but also retains the complete shielding function of the shielding component 120 in electromagnetic interference protection.

[0051] In some embodiments, the protective layer 220 is made of a plastic film material, preferably including polymeric materials with good transparency, flexibility, and processing adaptability such as PET (polyethylene terephthalate), PVC (polyvinyl chloride), or TPU (thermoplastic polyurethane). This type of highly transparent plastic film not only possesses sufficient mechanical strength and heat resistance, suitable for the material stability and biocompatibility requirements of medical devices such as endoscopes, but also significantly improves the visibility of component installation during assembly. Through the transparent protective layer 220, operators can directly observe the positional distribution of the internal shielding component 120, clearly identify the avoidance area of ​​the connector 230, and ensure precise tightening operations, thereby effectively avoiding damage or interference to the shielding component 120 due to positional deviations.

[0052] Of course, in other embodiments, the protective layer 220 can also be made of other transparent structural components, such as transparent polycarbonate (PC), acrylic (PMMA) sheets, or even injection-molded one-piece transparent covers. These structural components also have good light transmittance and structural support performance, ensuring visibility and ease of operation during assembly, while providing higher strength or physical protection under specific environments, further enhancing the reliability of assembly and the integrity of the shielding components.

[0053] This application provides an endoscope handle 300, including a handle housing 310 and a circuit board 110 assembly structure as described above. The circuit board 110 assembly structure is located inside the handle housing 310. The circuit board 110 assembly structure is non-destructively fixed to the housing structure by a restraint component 200, which improves the structural stability while effectively avoiding interference with the electromagnetic shielding structure, thereby improving the stability and reliability of image signal transmission.

[0054] When the restraint assembly 200 includes a protective layer 220, a first limiting member 330 is provided inside the handle housing 310 to restrict the movement of the protective layer 220 along its axial direction. This limiting member is mainly used to restrict the axial slippage of the protective layer 220 inside the handle due to vibration, thermal expansion and contraction, or handle operation, to prevent the circuit board assembly 100 from being displaced or deflected, and to ensure that it is in a stable and controlled position in the internal cavity.

[0055] The first limiting member 330 specifically includes a plurality of mounting posts 331 prefabricated on the handle housing 310, each mounting post 331 being used to install the guide structure of the wire rope 500. Preferably, a guide block 410 is fixed on the mounting post 331, and the guide block 410 has a groove for limiting or guiding the wire rope 500. The axial end of the protective layer 220 abuts against the structure of the mounting post 331 or the guide block 410, thereby limiting its axial displacement. The guide block 410 can also be further used to prevent the circuit board 110 from loosening or dislodging due to impact or vibration during transportation or use.

[0056] Of course, in other embodiments, the first limiting member 330 can also be other convex structures prefabricated on the handle housing 310, such as integrally formed limiting ribs, annular limiting platforms, slots or arc-shaped guide rails, etc. These structures can all physically block and limit the end of the protective layer 220. The specific structure can be flexibly selected according to the inner cavity space of the handle.

[0057] As an optional embodiment, the handle housing 310 also has a pre-fabricated constraint frame 311, which further limits the movement space of the wiring harness 111 leading out of the circuit board 110. The constraint frame 311 has a constraint groove 312 for accommodating the wiring harness 111. This constraint groove 312 can be configured with an interference fit with the wiring harness 111, making it less prone to wobbling after insertion, thereby further stabilizing the circuit board assembly 100. This design not only facilitates assembly but also prevents problems such as pulling, unstable electrical signals, or loose electrical contacts caused by the movement of the wiring harness 111. For some more demanding applications, a buffer silicone gasket or clamp can be added inside the constraint groove 312 to enhance the fixing effect.

[0058] In other embodiments, to achieve a stronger fixation, the wire harness 111 can be directly fixed to the housing by a pressure plate or limiting block using rigid components such as bolts or clips, so as to avoid the circuit board 110 being affected by external force pulling.

[0059] As an optional implementation, the handle housing 310 is also pre-fabricated with multiple connecting posts 320, which are used to fix and cooperate with the connector 230. These connecting posts 320 can be evenly distributed or staggered according to the internal structure of the housing, which not only serve as a mounting reference surface, but can also be used to adjust the fixed position of the circuit board assembly 100 or the protective layer 220, which is particularly suitable for situations where the internal structure of the housing is irregular and cannot be directly mounted on a flat surface.

[0060] In practical implementation, screws can be passed through the connecting portion 221 on the protective layer 220 and then threaded onto the connecting post 320, thereby achieving a secure assembly of the circuit board assembly 100. This connection method not only improves assembly strength but also effectively avoids structural damage to the circuit board 110 or the shielding layer. Furthermore, to further improve assembly efficiency, quick-release screws or self-tapping screws with anti-loosening designs can be used to prevent loosening or loss of threads.

[0061] Of course, in other embodiments, the protective layer 220 itself can also be integrally formed with multiple fixing posts, that is, columnar structures can be injection molded or molded at the ends of the protective layer 220. These fixing posts can be directly inserted into the inner cavity of the connecting post 320 and connected by screws or glue. This design not only improves the modular assembly efficiency but also enhances the integrity of the overall structure and avoids electromagnetic interference caused by misalignment between multiple layers.

[0062] Furthermore, the protective layer 220 can also adopt an in-mold molding process according to actual needs, so that the fixing column and the connecting part 221 are integrally molded into the protective layer 220 body. This saves the number of parts while improving the stability and vibration resistance of the overall structure, making it suitable for long-term, high-intensity operation scenarios.

[0063] Reference Figure 1 and Figure 2 As shown, this application also provides an endoscope, including the endoscope handle 300 and insertion part 600 described in the above scheme, with the proximal end of the insertion part 600 connected to the endoscope handle 300. The insertion part 600 is used to insert into the patient's body cavity, acquire images, and perform operations such as surgical assistance, biopsy, and debridement; the endoscope handle 300 serves as the main operating body, carrying core components including an image processing module, a power harness 111, and control circuitry. Through the aforementioned circuit board 110 assembly structure, the image interference problem caused by shielding layer damage in the prior art is effectively solved, providing a clearer, more stable, and safer image acquisition and transmission guarantee for the endoscope system.

[0064] It should be noted that the endoscopes referred to in the embodiments of this application may be bronchoscopes, pyeloscopes, esophagoscopes, gastroscopes, colonoscopes, otoscopes, rhinoscopes, oral endoscopes, laryngoscopes, colposcopes, laparoscopes, arthroscopes, etc. The embodiments of this application do not specifically limit the types of endoscopes.

[0065] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0066] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A circuit board assembly structure for use in an endoscope, characterized in that, The circuit board assembly structure includes a circuit board assembly (100) and a restraint assembly (200), wherein: The circuit board assembly (100) includes a circuit board (110) and a shield (120) sleeved on the outside of the circuit board (110). The restraint assembly (200) is used to fix the circuit board assembly (100) to the handle housing (310), and the restraint assembly (200) and the shield (120) are arranged to avoid each other.

2. The circuit board assembly structure according to claim 1, characterized in that, The restraint assembly (200) includes a restraint rope, wherein: The binding rope is wrapped around the outer circumference of the circuit board assembly (100) and fixedly connected to the handle housing (310) through its connecting end, so as to fix the circuit board assembly (100) to the handle housing (310). Alternatively, the shield (120) has an opening (121) for the lead wire (111) of the circuit board (110) to be led out, one end of the restraint rope is fixedly connected to the circuit board (110), and the other end is led out through the opening (121) and connected to the handle housing (310) to fix the circuit board assembly (100) to the handle housing (310).

3. The circuit board assembly structure according to claim 1, characterized in that, The restraint assembly (200) includes a protective layer (220) and a connector (230). The protective layer (220) is sleeved on the outside of the shield (120). The protective layer (220) is connected to the handle housing (310) through the connector (230), and the connector (230) and the shield (120) are arranged to avoid each other.

4. The circuit board assembly structure according to claim 3, characterized in that, The connector (230) is a fastener (231), which is inserted through the protective layer (220) and fixedly connected to the handle housing (310), and the fastener (231) and the shield (120) are arranged to avoid each other.

5. The circuit board assembly structure according to claim 3, characterized in that, The protective layer (220) is provided with at least one connecting portion (221), which is correspondingly connected to the connector (230); wherein: The connecting part (221) is located at the edge of the protective layer (220); And / or, the length of the protective layer (220) is greater than the length of the circuit board (110), and the connecting portion (221) is disposed in the area where the protective layer (220) extends relative to the outline of the circuit board (110); And / or, the connecting part (221) is disposed at the diagonal or four corners of the circuit board (110), or symmetrically or asymmetrically arranged on both sides along the length or width direction of the circuit board (110); And / or, the connector (230) is any one or a combination of two or more of screws, rivets or glue; And / or, the protective layer (220) is a plastic film.

6. The circuit board assembly structure according to any one of claims 3-5, characterized in that, The protective layer (220) is a transparent structural component.

7. An endoscope handle, characterized in that, It includes a handle housing (310) and a circuit board assembly structure as described in any one of claims 1-6, wherein the circuit board assembly structure is disposed within the handle housing (310).

8. The endoscope handle according to claim 7, characterized in that, When the restraint assembly (200) includes the protective layer (220), a first limiting member (330) is provided in the handle housing (310) to restrict the movement of the protective layer (220) in its axial direction. And / or, the handle housing (310) is prefabricated with a constraint frame (311), and the constraint frame (311) is formed with a constraint groove (312) for accommodating the lead wire harness (111) of the circuit board (110). And / or, a plurality of connecting posts (320) are pre-formed on the handle housing (310), the connecting posts (320) being used for fixed engagement with the connector (230).

9. The endoscope handle according to claim 8, characterized in that, The first limiting member (330) includes an assembly post (331) disposed on the handle housing (310) for mounting a guide (400) for mounting a wire rope (500), and the end of the protective layer (220) in its axial direction abuts against the assembly post (331).

10. An endoscope, characterized in that, Includes the endoscope handle and insertion part (600) as described in any one of claims 7-9, wherein the proximal end of the insertion part (600) is connected to the endoscope handle (300).

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