Light guide plug-in mechanism based on optical fiber conducting illumination and endoscope device

Abstract

The utility model discloses a light guide plug structure structure, be equipped with optical fiber, and its light inlet end part is used for butt joint image processor's light source, and the extension cavity pipe structure is assembled and is connected with the light guide plug structure between one end part, and the extension cavity pipe structure is assembled and is connected with the light guide plug structure between one end part, and the extension cavity pipe structure is assembled and is connected with the light guide plug structure between one end part, and the extension cavity pipe structure is assembled and is connected with the light guide plug structure between one end part, and the extension cavity pipe structure is assembled and is connected with the light guide plug structure between one end part, and the extension cavity pipe structure is assembled and is connected with the light guide plug structure between one end part, and the extension cavity pipe structure is assembled and is connected with the light guide plug structure between one end part, and the extension cavity pipe structure is assembled and is connected with the light guide plug structure between one end part, and the extension cavity pipe structure is assembled and is connected with the light guide plug structure between one end part, and the extension cavity pipe structure is assembled and is connected with the light guide plug structure between one end part.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a light guide insertion mechanism and endoscope device based on fiber optic guided illumination. Background Technology

[0002] Currently, single-use cholangioscopy, bronchoscopy, uroscopy, and gastrointestinal endoscopy typically require the use of an image processor. The biliary and pancreatic duct imaging catheter, primarily used in endoscopic retrograde cholangiopancreatography (ERCP), provides direct images specifically for endoscopic surgical applications of the pancreatic and biliary system and can also provide a working channel for other diagnostic and treatment accessories.

[0003] Currently, there are various disposable biliary and pancreatic duct imaging catheters on the market. Some of these products integrate the light source into the handle and use optical fibers to transmit the light to the probe tip for illumination. Furthermore, the brightness of the light source can be controlled using a control panel within the handle. However, since these products are typically single-use, one-piece designs, integrating the light source and control panel into the handle significantly increases the overall product cost.

[0004] Meanwhile, some products place the light source directly at the insertion end, controlling the brightness of the LED light by adjusting the current. However, this design also has obvious drawbacks, mainly that the LED light is prone to overheating after prolonged use, which could potentially burn the human tissue in contact with the insertion end. Furthermore, as a disposable product, the single-use nature of the LED beads also contributes to the high product cost. Utility Model Content

[0005] To address these issues, this invention provides a light guide insertion mechanism and endoscope device based on fiber optic illumination, thereby solving the technical problems of high usage cost and potential burns to human tissue caused by the easily heated head lamp of the existing disposable bile and pancreatic duct imaging catheter.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A light guide plug-in mechanism based on fiber optic guided lighting, comprising:

[0008] The light guide plug structure includes an optical fiber. One end of the optical fiber is positioned at the docking end of the light guide plug structure via an optical fiber positioning seat, and a precisely aligned light-inlet end is formed based on the optical fiber positioning seat.

[0009] An extended cavity structure, one end of which is assembled and connected to the light guide plug structure;

[0010] An insertion end structure is located at the other end of the extended cavity structure;

[0011] The optical fiber passes through the extension cavity structure from the light guide plug structure and extends to the probe end structure, forming the light output end of the optical fiber at the probe end.

[0012] Based on the above technical solution, the present invention is further described as follows:

[0013] As a further aspect of this utility model, it also includes:

[0014] The handle assembly structure is disposed between the light guide plug structure and the extension cavity structure;

[0015] The optical fiber passes through the handle assembly structure and extends to the extension cavity structure.

[0016] As a further embodiment of this utility model, it also includes: a suction component structure and a water delivery component structure;

[0017] The extended cavity structure is provided with an instrument channel and a water delivery channel in an intermittent manner, and the probe end structure is provided with an instrument end hole and a water delivery end hole in an intermittent manner. The instrument channel is connected to the instrument end hole, and the water delivery channel is connected to the water delivery end hole.

[0018] The driving ends of the suction assembly structure and the water delivery assembly structure are respectively located outside the handle assembly structure.

[0019] Furthermore, the suction end of the suction assembly structure passes through the instrument channel and extends to the instrument end hole, and the suction end of the water delivery assembly structure passes through the water delivery channel and extends to the water delivery end hole.

[0020] As a further embodiment of this utility model,

[0021] The extended cavity structure also has a built-in optical fiber channel;

[0022] The probe end structure also has a built-in optical fiber end hole and a camera end hole, and the optical fiber channel is connected to the optical fiber end hole respectively; the optical fiber passes through the optical fiber channel of the handle assembly structure and the extension cavity structure in sequence from the light guide plug structure, and extends to the optical fiber end hole to form the light output end.

[0023] The camera module is installed inside the camera end hole, and the electrical connection line of the camera module is led out to the external connection system through the optical fiber channel.

[0024] As a further embodiment of this utility model,

[0025] The handle assembly structure has several sets of guide pads fixedly connected to its inner cavity. The guide pads are arranged along the inner and outer sides of the inner cavity, and the optical fiber is positioned along the guide pads on the inner and outer sides of the inner cavity of the handle assembly structure.

[0026] As a further embodiment of this utility model,

[0027] The light guide plug structure includes a lower housing, an upper housing, a snap-fit ​​assembly, and the optical fiber positioning base;

[0028] The lower housing and the upper housing are fastened together to form a light guide plug housing;

[0029] The snap-fit ​​assembly and the fiber optic positioning base are positioned and disposed within the housing of the light guide plug.

[0030] The light guide plug housing is connected to the image processor's socket via the snap-fit ​​assembly;

[0031] The fiber optic positioning base is used to position the fiber optic cable at the socket light source position.

[0032] As a further embodiment of this utility model,

[0033] The fiber optic positioning base is provided in two sets. Each set of the fiber optic positioning base includes a positioning sleeve and at least two sets of limiting protrusions fixed to the outer peripheral side of the positioning sleeve. The positioning sleeve is positioned inside the light guide plug housing by the limiting protrusions.

[0034] One end of the optical fiber is positioned inside the positioning sleeve, and this end is flush with the outer end of the positioning sleeve to form the light-inlet end.

[0035] As a further embodiment of this utility model,

[0036] The latching assembly includes a pressure-sensitive latch, a spring, and a positioning base;

[0037] The touch-sensitive card block has convex shafts on both sides of one end, and the touch-sensitive card block is rotatably mounted on the top of one end of the positioning base through the convex shafts. The positioning base is fixedly mounted on the lower housing through several holes on its edge.

[0038] The spring is assembled between the bottom groove of the touch-pressing block and the top groove of the positioning base. The other end of the touch-pressing block is also provided with an insertion slot and an unlocking pressing part.

[0039] When the spring is in an unforced state, the insertion slot of the touch-sensitive block is higher than the top surface of the upper housing, and engages with the boss in the image processor socket through spring pressure.

[0040] When pressure is applied to the unlocking pressing part, causing the spring to be compressed and deformed, the insertion slot sinks below the top surface of the upper housing.

[0041] As a further embodiment of this utility model,

[0042] The outer wall of the extended cavity structure is fitted with an outer skin layer;

[0043] The outer skin layer is configured as an opaque light-blocking skin layer.

[0044] An endoscope device includes the aforementioned light guide insertion mechanism based on fiber optic illumination.

[0045] This utility model has the following beneficial effects:

[0046] 1. This utility model incorporates an optical fiber positioning seat within the light guide plug structure, ensuring that one end of the optical fiber is positioned at a predetermined location at the insertion end to form the light-inlet end. This guarantees the alignment accuracy and end-face stability of the optical fiber end with the external socket light source. Combined with the positioning sleeve and limiting structure, the positioning state of the optical fiber end is maintained during insertion, removal, and transportation, reducing illumination efficiency fluctuations caused by end offset and improving optical coupling consistency and reliability. Using optical fiber as the light guide carrier separates the light source from the insertion end, enabling long-distance conductive illumination. The detachable connection between the light guide plug structure and the external image processor eliminates the need for the LED light source to be directly placed at the insertion end, avoiding the risk of tissue burns due to localized heating and facilitating heat dissipation management, significantly improving overall safety and reliability. Placing the LED light source within a reusable image processor, while using the light guide plug mechanism as a disposable component, not only reduces the cost per use but also minimizes the risk of cross-infection, balancing economic efficiency and hygiene.

[0047] 2. This light guide insertion mechanism is suitable for use in disposable endoscope devices. By separating the light source from the insertion end and using fiber optic light guide, the overall cost can be reduced and the risk of tissue burns caused by the heat of the tip can be avoided. At the same time, the cleaning and disinfection process is eliminated, the risk of cross-infection is reduced, and the overall functional adaptability and practicality are improved. Attached Figure Description

[0048] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. The structures, proportions, sizes, etc., drawn in this specification are only used to complement the content disclosed in the specification, so that those skilled in the art can understand and read them. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0049] Figure 1 This is one of the overall structural schematic diagrams of the light guide plug-in mechanism based on optical fiber conduction lighting provided in the embodiments of this utility model.

[0050] Figure 2 The second schematic diagram of the overall structure of the light guide plug-in mechanism based on optical fiber conduction lighting provided in this embodiment of the utility model.

[0051] Figure 3 A schematic cross-sectional view of the extended cavity structure in the light guide plug-in mechanism based on optical fiber conductive lighting provided in this embodiment of the utility model.

[0052] Figure 4 The diagram shows the extension cavity structure and probe end structure of the light guide plugging mechanism based on optical fiber conduction lighting provided in the embodiment of this utility model, corresponding to the assembly structure of the optical fiber and the camera module.

[0053] Figure 5 This is a schematic diagram of the external structure of the light guide plug structure in the light guide plug mechanism based on optical fiber conduction lighting provided in an embodiment of this utility model.

[0054] Figure 6 This is one of the internal structural diagrams of the light guide plug structure in the light guide plug mechanism based on optical fiber conduction lighting provided in the embodiments of this utility model.

[0055] Figure 7 This is the second internal structural diagram of the light guide plug structure in the light guide plug mechanism based on optical fiber conduction lighting provided in this embodiment of the utility model.

[0056] Figure 8 This is one of the internal structural diagrams of the handle assembly in the light guide plug-in mechanism based on fiber optic guided lighting provided in an embodiment of this utility model.

[0057] Figure 9 This is the second internal structural diagram of the handle assembly in the light guide plugging mechanism based on fiber optic guided lighting provided in this embodiment of the utility model.

[0058] Figure 10 This is one of the structural schematic diagrams of the internal snap-fit ​​assembly of the light guide plug structure in the light guide plug structure of the light guide plug-in mechanism based on optical fiber conduction lighting provided in the embodiments of this utility model.

[0059] Figure 11 This is the second schematic diagram of the internal snap-fit ​​assembly of the light guide plug structure in the light guide plug structure of the light guide plug-in mechanism based on optical fiber conduction lighting provided in the embodiment of this utility model.

[0060] The attached diagram lists the components represented by each number as follows:

[0061] Handle assembly structure 1, guide pad 11;

[0062] Extended cavity structure 2; fiber optic channel 21, instrument channel 22, water delivery channel 23;

[0063] Insertion end structure 3: fiber optic end hole 31, camera end hole 32, instrument end hole 33, water supply end hole 34;

[0064] Suction component structure 4; Water delivery component structure 5;

[0065] Light guide plug structure 6: lower housing 61, upper housing 62, snap-fit ​​assembly 63, contact pressure block 63a, convex shaft 63a1, insertion slot 63a2, unlocking pressing part 63a3, spring 63b, positioning base 63c, hole seat 63c1, fiber optic positioning seat 64, positioning sleeve seat 64a1, limiting boss 64a2;

[0066] 7. Fiber optic cable; 8. Camera module; 9. Button assembly structure;

[0067] Light-input end a; light-output end b. Detailed Implementation

[0068] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0069] The terms "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity of description and are not intended to limit the scope of implementation of this utility model. Any changes or adjustments to their relative relationships, without substantially altering the technical content, shall also be considered within the scope of implementation of this utility model.

[0070] like Figures 1 to 11As shown, this utility model embodiment provides a light guide insertion mechanism based on fiber optic illumination and an endoscope device including the light guide insertion mechanism and an image processor with LED beads. It is applicable to various endoscope devices, including but not limited to cholangioscopes, bronchoscopes, uroscopes, gastrointestinal endoscopes, and other endoscopic examination systems. Specifically, in one embodiment of the invention, the light guide insertion mechanism is applied to a cholangioscopy system. Through the coordinated operation of the distal fiber optic illumination and imaging module, efficient and safe endoscopic observation and assisted treatment are achieved. The light guide insertion mechanism includes a handle assembly structure 1, an extension tube structure 2, an insertion end structure 3, a suction assembly structure 4, a water delivery assembly structure 5, a light guide plug structure 6, an optical fiber 7, a camera module 8, and a button assembly structure 9. It effectively achieves long-distance illumination by using the optical fiber 7 as a light guide carrier. Simultaneously, the light guide plug structure 6 effectively forms a detachable, dockable light guide characteristic. This avoids overheating of the insertion end structure 3 due to excessive heat from the heated LED beads, which could burn tissue. Furthermore, by aligning the optical fiber's light-inlet end with the position of an external light source device (e.g., an image processor or an LED bead built into a light source box), the optical fiber's light-inlet end is fixed by a positioning seat and corresponds to the light-emitting position of the LED bead, achieving efficient light coupling transmission. The light emitted from the external light source device is then transmitted via the optical fiber to the light-emitting end of the insertion end structure, providing illumination for the endoscopic examination area. This significantly reduces the cost of disposable products and improves overall functional adaptability and practicality. Specific settings are as follows:

[0071] Please refer to Figures 1 to 4 The handle assembly structure 1 serves as the core for gripping and controlling the overall structure, connecting the light guide plug 6 and the extension cavity structure 2, accommodating the wiring path of the optical fiber 7, and providing a basis for manual control. The extension cavity structure 2 is a multi-channel flexible tube, with one end assembled and connected to the handle assembly structure 1 and the other end connected to the probe end structure 3, together forming an integrated through-cavity structure unit to achieve continuous transmission of optical fiber, instruments, and water.

[0072] Specifically, the extended lumen structure 2 is intermittently equipped with an optical fiber channel 21, an instrument channel 22, and a water supply channel 23, providing intraoperative illumination, instrument insertion, and irrigation functions, respectively. The probe end structure 3 has an optical fiber end hole 31, a camera end hole 32, an instrument end hole 33, and a water supply end hole 34. The optical fiber end hole 31 is connected to the optical fiber channel 21, and the camera end hole 32 is connected to the camera module 8, forming an intraoperative imaging and illumination path. The instrument end hole 33 is connected to the instrument channel 22, and the water supply end hole 34 is connected to the water supply channel 23, forming an intraoperative intervention and irrigation function channel. The extended lumen structure 2 and the probe end structure 3 work together to form an integrated multi-cavity functional assembly unit, meeting the coordinated needs of intraoperative image acquisition, target illumination, interventional treatment, and water drainage.

[0073] Please continue to refer to this. Figure 1 and Figure 4 The driving ends of the aspiration assembly structure 4 and the water delivery assembly structure 5 are respectively located outside the handle assembly structure 1. The aspiration end of the aspiration assembly structure 4 extends through the instrument channel 22 and is located in the instrument end hole 33. The aspiration end of the water delivery assembly structure 5 extends through the water delivery channel 23 and is located in the water delivery end hole 34. This allows the aspiration and water replenishment functions during the microscopic examination to be completed through the aspiration assembly structure 4 and the water delivery assembly structure 5, forming an independent and non-interfering water circulation channel system. The instrument channel and the water delivery channel are arranged alternately, which can effectively avoid channel crossing or liquid-gas mixing, ensuring the independence and safety of intraoperative operations, and improving microscopic examination efficiency and user experience.

[0074] Please refer to Figure 5 The light guide plug structure 6 includes a lower housing 61, an upper housing 62, a snap-fit ​​assembly 63, and an optical fiber positioning seat 64. The lower housing 61 and the upper housing 62 are snapped together to form the light guide plug housing, which accommodates and supports the snap-fit ​​assembly and the optical fiber alignment structure. The snap-fit ​​assembly 63 and the optical fiber positioning seat 64 are disposed inside the light guide plug housing. The snap-fit ​​assembly 63 is used to engage with the image processor's connector, forming a locking connection. The light guide plug structure is mechanically locked to the image processor's connector, offering advantages such as quick insertion and removal and stable positioning. The optical fiber positioning seat 64 is used to position the light-inlet end of the optical fiber 7. The optical fiber positioning seat ensures that the light-outlet end of the optical fiber accurately corresponds to the light source position, improving optical coupling efficiency, avoiding light energy loss, and enhancing the overall imaging brightness stability.

[0075] For details, please refer to Figure 6The fiber optic positioning base 64 is provided in two sets. Each set of the fiber optic positioning base 64 includes a positioning sleeve 64a1 and a limiting boss 64a2 fixed to the outer peripheral side of the positioning sleeve 64a1. The limiting boss 64a2 is preferably provided in two or more sets, arranged symmetrically, to limit the positioning sleeve 64a1 inside the light guide plug housing and maintain the stable position of the fiber optic 7. One end of the fiber optic 7 is engaged with the inner side of the positioning sleeve 64a1, and the end face of the fiber optic 7 is flush with the outer end of the positioning sleeve 64a1, so that the fiber optic 7 forms a light-entry end a based on the positioning sleeve 64a1, for connecting to the image processor light source to receive the illumination beam. This structure, through the limiting effect of the positioning sleeve 64a1, ensures consistent insertion depth and accurate alignment angle of the fiber optic 7, which helps to improve the coupling efficiency of the light source.

[0076] Please refer to Figure 7 The two sets of optical fibers 7 extend from the positioning sleeve 64a1 through the optical fiber channel 21 of the handle assembly structure 1 and the extension cavity structure 2 to the optical fiber end hole 31 of the probe end structure 3, forming the light-emitting end b, which is used to provide illumination to the target area. This achieves long-distance conduction of illumination from the plug to the end, effectively reducing the risk of head-end heating and improving the safety and economy of the device for disposable structures. At the same time, by arranging the light source device in a reusable image processor, the disposable part only undertakes the functions of optical fiber guiding and plugging, greatly reducing the manufacturing complexity and cost of disposable components. The handle assembly structure 1 is used to connect the two and allow the optical fiber to pass through, improving the modular assembly of the structure and providing a reasonable path for the optical fiber to reduce optical fiber bending, interference and loss.

[0077] The camera module 8 is positioned and assembled in the camera end hole 32 of the probe end structure 3, and the electrical connection line of the camera module 8 is externally connected through the optical fiber channel 21 to form two sets of optical fiber transmission paths, and to provide illumination for the camera module 8.

[0078] The dual fiber optic paths are symmetrically arranged on both sides of the camera module 8 to form a uniform illumination optical path structure, which improves the illumination quality of the image acquisition area and enables clear and visual intraoperative imaging.

[0079] As a preferred embodiment, please refer to Figure 8 and Figure 9The handle assembly structure 1 has several sets of guide pads 11 fixedly attached to its inner and outer sides. Two sets of optical fibers 7 are positioned along the inner and outer sides of the handle assembly structure 1, respectively, extending through the guide pads 11. This arrangement positions the two sets of optical fibers 7 at the edges, isolating them from the operating part to reduce mutual interference. Simultaneously, it provides more space for the optical fibers 7 to turn, thereby reducing the degree of bending. The guide pads guide the optical fibers to a stable arrangement within the handle assembly structure, preventing losses or breakage due to excessively small bending radii, and effectively avoiding problems such as fiber entanglement and crossing, thus improving the overall manufacturability and service life.

[0080] As another preferred embodiment, please refer to [the relevant documentation]. Figure 3 The outer wall of the extended cavity structure 2 is also fitted with an outer skin layer, which is a light-blocking skin layer made of opaque material. This structure can effectively shield the light leaking out of the optical fiber 7, ensure the concentration and stability of the light guiding path, thereby improving the uniformity of illumination at the probe end and the image contrast. At the same time, the light-blocking skin layer also plays an external protection role, enhancing the durability and safety of the overall device.

[0081] Please refer to Figure 10 and Figure 11 The latching assembly 63 includes a pressure-sensitive latching block 63a, a spring 63b, and a positioning base 63c. A convex shaft 63a1 is fixedly connected to both sides of one end of the pressure-sensitive latching block 63a, and the pressure-sensitive latching block 63a is rotatably mounted on the top of one end of the positioning base 63c via the convex shaft 63a1. The positioning base 63c is fixedly mounted to the lower housing 61 via several holes 63c1 on its edge, thereby limiting the front-to-back position of the pressure-sensitive latching block 63a and allowing the pressure-sensitive latching block 63a to rotate around the convex shaft 63a1 based on the positioning base 63c.

[0082] The spring 63b is mounted between the bottom groove of the pressure block 63a and the top groove of the positioning base 63c. The other end of the pressure block 63a also has a insertion slot 63a2 and an unlocking press 63a3. This structure helps to achieve stable limiting of the plug in the inserted state and a rapid response to unlocking operations. When the spring 63b is not under force, the insertion slot 63a2 of the pressure block 63a is higher than the top surface of the upper housing 62. At this time, the insertion slot 63a2 can be engaged with the protrusion in the image processor socket based on the spring pressure, thereby restricting the plug in the image processor socket. When it is necessary to remove the plug, pressure is applied to the unlocking press 63a3, and the spring 63b deforms under force. At this time, the insertion slot 63a2 is lower than the top surface of the upper housing 62, thus releasing the locking and allowing the plug to be removed. The latching assembly 63, through the cooperation of the contact block 63a and the spring 63b, achieves automatic locking during insertion and pressing to unlock during removal. It has the advantages of simple structure, convenient operation, and high insertion and removal stability, which can significantly improve the connection reliability and service life of the image processor interface.

[0083] Please continue to refer to this. Figure 1 The button assembly structure 9 is mounted on the handle assembly structure 1 to facilitate the operation of the microscopic function buttons and improve the functionality.

[0084] The endoscope device integrates a light guide plug-in mechanism based on fiber optic transmission illumination, achieving a multi-functional structure that is stable to plug and unplug, highly efficient in illumination, and sensitive in unlocking. It is suitable for the precision requirements of image acquisition and surgical field illumination integration in endoscopic diagnosis and treatment scenarios.

[0085] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A light guide insertion mechanism based on fiber optic guided lighting, characterized in that, include: The light guide plug structure includes an optical fiber. One end of the optical fiber is positioned at the docking end of the light guide plug structure via an optical fiber positioning seat, and a precisely aligned light-inlet end is formed based on the optical fiber positioning seat. An extended cavity structure, one end of which is assembled and connected to the light guide plug structure; An insertion end structure is located at the other end of the extended cavity structure; The optical fiber passes through the extension cavity structure from the light guide plug structure and extends to the probe end structure, forming the light output end of the optical fiber at the probe end.

2. The light guide insertion mechanism based on fiber optic guided illumination according to claim 1, characterized in that, Also includes: The handle assembly structure is disposed between the light guide plug structure and the extension cavity structure; The optical fiber passes through the handle assembly structure and extends to the extension cavity structure.

3. The light guide insertion mechanism based on fiber optic guided illumination according to claim 2, characterized in that, Also includes: The structure of the suction component and the structure of the water delivery component; The extended cavity structure is provided with an instrument channel and a water delivery channel in an intermittent manner, and the probe end structure is provided with an instrument end hole and a water delivery end hole in an intermittent manner. The instrument channel is connected to the instrument end hole, and the water delivery channel is connected to the water delivery end hole. The driving ends of the suction assembly structure and the water delivery assembly structure are respectively located outside the handle assembly structure. Furthermore, the suction end of the suction assembly structure passes through the instrument channel and extends to the instrument end hole, and the suction end of the water delivery assembly structure passes through the water delivery channel and extends to the water delivery end hole.

4. The light guide insertion mechanism based on fiber optic guided illumination according to claim 3, characterized in that, The extended cavity structure also has a built-in optical fiber channel; The probe end structure also has a built-in optical fiber end hole and a camera end hole, and the optical fiber channel is connected to the optical fiber end hole respectively; the optical fiber passes through the optical fiber channel of the handle assembly structure and the extension cavity structure in sequence from the light guide plug structure, and extends to the optical fiber end hole to form the light output end. The camera module is installed inside the camera end hole, and the electrical connection line of the camera module is led out to the external connection system through the optical fiber channel.

5. The light guide insertion mechanism based on fiber optic guided illumination according to claim 2, characterized in that, The handle assembly structure has several sets of guide pads fixedly connected to its inner cavity. The guide pads are arranged along the inner and outer sides of the inner cavity, and the optical fiber is positioned along the guide pads on the inner and outer sides of the inner cavity of the handle assembly structure.

6. The light guide insertion mechanism based on fiber optic guided illumination according to claim 1, characterized in that, The light guide plug structure includes a lower housing, an upper housing, a snap-fit ​​assembly, and the optical fiber positioning base; The lower housing and the upper housing are fastened together to form a light guide plug housing; The snap-fit ​​assembly and the fiber optic positioning base are positioned and disposed within the housing of the light guide plug. The light guide plug housing is connected to the image processor's socket via the snap-fit ​​assembly; The fiber optic positioning base is used to position the fiber optic cable at the socket light source position.

7. The light guide insertion mechanism based on fiber optic guided illumination according to claim 6, characterized in that, The fiber optic positioning base is provided in two sets. Each set of the fiber optic positioning base includes a positioning sleeve and at least two sets of limiting protrusions fixed to the outer peripheral side of the positioning sleeve. The positioning sleeve is positioned inside the light guide plug housing by the limiting protrusions. One end of the optical fiber is positioned inside the positioning sleeve, and this end is flush with the outer end of the positioning sleeve to form the light-inlet end.

8. The light guide insertion mechanism based on fiber optic guided illumination according to claim 7, characterized in that, The latching assembly includes a pressure-sensitive latch, a spring, and a positioning base; The touch-sensitive card block has convex shafts on both sides of one end, and the touch-sensitive card block is rotatably mounted on the top of one end of the positioning base through the convex shafts. The positioning base is fixedly mounted on the lower housing through several holes on its edge. The spring is assembled between the bottom groove of the touch-pressing block and the top groove of the positioning base. The other end of the touch-pressing block is also provided with an insertion slot and an unlocking pressing part. When the spring is in an unforced state, the insertion slot of the touch-sensitive block is higher than the top surface of the upper housing, and engages with the boss in the image processor socket through spring pressure. When pressure is applied to the unlocking pressing part, causing the spring to be compressed and deformed, the insertion slot sinks below the top surface of the upper housing.

9. The light guide insertion mechanism based on fiber optic guided illumination according to claim 1, characterized in that, The outer wall of the extended cavity structure is fitted with an outer skin layer; The outer skin layer is configured as an opaque light-blocking skin layer.

10. An endoscope device, characterized in that, Includes the light guide plug-in mechanism based on fiber optic guided illumination as described in any one of claims 1 to 9; The light guide plug structure of the light guide plug mechanism is provided with a dockable light source interface. The optical fiber conducts the light from the light source interface to the light output end of the probe end structure, thereby illuminating the tissue being inspected.

Images