Handheld endoscope with light source adjusting function

By introducing LED micro lamps and light source controllers into the endoscope, the problem of unadjustable brightness of the endoscope light source is solved, and flexible adjustment of the light source brightness is realized and simplified assembly is achieved, image quality is improved and production costs are reduced.

CN223054442UActive Publication Date: 2025-07-04张宝欣
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Patent Information

Application Number
CN202421977149.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-14
Publication Date
2025-07-04
Estimated Expiration
2034-08-14

AI Technical Summary

Technical Problem

The brightness of the existing endoscope light source is unadjustable or the adjustment structure is complex, resulting in poor quality of the camera image captured, affecting the diagnostic and treatment effect, and high production costs.

Method used

A handheld endoscope is designed, including LED micro lamps, LED micro lamp amplifiers and light source controllers. The brightness of the LED micro lamps is adjusted through the light source controller, and the removable connection between the handle and the sleeve is achieved through a sealed connection assembly, simplifying the assembly process.

Benefits of technology

It realizes flexible adjustment of the brightness of the light source, improves the camera image quality, simplifies the assembly process, reduces production costs, adapts to light changes in endoscopic surgery, and is easy to operate.

✦ Generated by Eureka AI based on patent content.

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Abstract

A handheld endoscope with a light source adjusting function relates to the technical field of medical instruments, and comprises a handle, a light source adjusting module, a light source adjusting module, a light source adjusting module, a light source adjusting module, a light source adjusting module, a light source adjusting module, a light source adjusting module and a light source adjusting module, and is characterized in that the handle is internally provided with a mounting cavity with a lateral opening and is internally provided with a control panel; the sleeve is detachably arranged on the handle; one end of the conduit is hermetically connected to the sleeve, and the other end of the conduit extends in the direction away from the sleeve; the camera is arranged at one end of the catheter, electrically connected with the control panel and used for shooting images in the human body; and the light source system comprises an LED micro lamp which is arranged in the conduit and is parallel to the camera, an LED micro lamp amplifier which is arranged in the sleeve, and a light source controller which is arranged in the sleeve and is used for controlling the brightness of the LED micro lamp and the LED micro lamp amplifier. By adopting the technical scheme, the brightness of the light source can be rapidly adjusted, the quality of images shot by the camera is improved, meanwhile, rapid assembly can be achieved, operation is easy and convenient, practicability is high, and market popularization is facilitated.
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Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and particularly relates to a handheld endoscope with a light source adjustment function. Background Art

[0002] An endoscope is a commonly used medical device in clinical practice. A surgeon can use an endoscopic device to observe local lesions, obtain tissue samples, stop bleeding, excise, drain, repair, or reconstruct a passage, etc. through a natural body cavity or an artificially established passage (such as an incision) under direct vision or with the support of auxiliary equipment, and has a wide range of application scenarios. Endoscopic devices are often used in combination with endoscopic diagnosis and treatment surgical consumables, which play roles such as biopsy, hemostasis, and dilation and excision during endoscopic examinations or surgeries.

[0003] An endoscope generally includes a handle and a catheter. A camera and a light source are arranged inside the catheter, and the other end of the handle is connected to a display. A doctor takes images of the internal body through the camera and transmits them to the display for display, so as to make a diagnosis or treatment.

[0004] However, the brightness of the light source of the existing endoscope is usually not adjustable, and it cannot adapt to the light changes during the endoscopic surgery, resulting in poor image quality captured by the camera and affecting the doctor's diagnosis or treatment. In addition, although some endoscopes can adjust the brightness of the light source, the structure for realizing the adjustment of the light source brightness is relatively complex, and the production cost is relatively high, which is not conducive to market promotion.

[0005] Therefore, the present application provides a handheld endoscope with a light source adjustment function to solve the above problems. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a handheld endoscope with a light source adjustment function for the defects and deficiencies in the prior art.

[0007] The technical solution adopted by the utility model is: a handheld endoscope with a light source adjustment function, comprising: a handle, inside which there is an installation cavity with a lateral opening, and a control panel is arranged in the installation cavity;

[0008] A sleeve, detachably arranged on the handle;

[0009] A catheter, one end of which is hermetically connected to the sleeve, and the other end extends away from the sleeve;

[0010] A camera, arranged at the end of the catheter away from the sleeve, electrically connected to the control panel, and used for taking images of the internal body of a human; and

[0011] The light source system includes an LED micro lamp disposed within the catheter and arranged side by side with the camera, an LED micro lamp amplifier disposed within the sleeve, and a light source controller disposed within the sleeve for controlling the current passing through the LED micro lamp amplifier.

[0012] Optionally, a sealing connection assembly is provided between the handle and the sleeve to achieve detachable connection between the handle and the sleeve through the sealing connection assembly while ensuring the sealing inside the sleeve. The sealing connection assembly includes:

[0013] A connecting boss having an inclined surface on one side for insertion into the opening of the handle;

[0014] A first connecting portion disposed on the side of the connecting boss having the inclined surface and hermetically connected to the sleeve; and

[0015] A fixing member for fixing the connecting boss within the opening to ensure the stability of the connection between the handle and the sleeve.

[0016] Optionally, the fixing member includes a sliding groove opened at the opening of the handle, a sliding ring slidably disposed within the sliding groove, a fixing convex edge disposed on the sliding ring, and a spring for providing an elastic force to the sliding ring to make the fixing convex edge tightly abut against the connecting boss. The sliding ring can slide in a direction perpendicular to the axis of the handle opening. The fixing convex edge is used to abut against the side wall of the connecting convex edge. The spring is disposed along the length direction of the sliding groove and abuts against the sliding ring. During connection, by driving the sliding ring to move, the connecting boss can smoothly enter the opening of the handle. After the connecting boss enters the opening, the sliding ring automatically resets under the action of the spring, driving the fixing convex edge to tightly abut against the connecting boss.

[0017] Optionally, a second connecting portion is provided on the side of the connecting boss away from the first connecting portion. A plurality of conductive posts are uniformly disposed on the side of the mounting cavity of the handle close to the opening. Conductive pins cooperating with the conductive posts are disposed within the second connecting portion.

[0018] Optionally, an anti-fooling groove is opened on the second connecting portion, and an anti-fooling convex edge slidably engaged with the anti-fooling groove is disposed within the mounting cavity.

[0019] Optionally, a guiding surface is provided at one end of the anti-fooling convex edge facing the opening to enable the anti-fooling groove to be smoothly guided onto the anti-fooling convex edge.

[0020] Optionally, an anti-fooling arrow is provided on the connecting boss corresponding to the anti-fooling groove, and an anti-fooling hole is provided on the handle corresponding to the anti-fooling arrow. When the anti-fooling arrow is aligned with the anti-fooling hole, the anti-fooling convex edge and the anti-fooling groove are aligned.

[0021] Optionally, the sleeve includes a catheter tube and an end cap. The LED micro lamp amplifier and the light source controller are both located inside the catheter tube. The end cap is integrally formed with the catheter tube and is located at one end of the catheter tube away from the handle. A through hole for the catheter to penetrate is provided on the end cap.

[0022] Optionally, a plurality of function buttons are provided on the handle. The plurality of function buttons are all electrically connected to the control panel. The function buttons include a photographing button, a brightness increasing button, a brightness decreasing button, a focusing increasing button, a focusing decreasing button, and a power on / off button.

[0023] After adopting the above technical solution, the beneficial effects of the present utility model are as follows:

[0024] 1. In this application, the light source regulator controls the magnitude of the current passing through the LED micro lamp amplifier, that is, the brightness of the LED micro lamp is adjusted, so as to adapt to the light change during the endoscopic surgery, ensure the image quality captured by the camera, and thus facilitate the doctor's diagnosis or treatment. The operation is simple, the structure is simple, the production cost is low, and it is conducive to market promotion.

[0025] 2. In this application, through the cooperation between the connecting boss, the first connecting portion, the sliding groove, the sliding ring, and the spring, the rapid assembly between the sleeve and the handle is realized. The operation is convenient, and the connection between the sleeve and the handle is relatively stable, with strong practicability.

[0026] 3. In this application, through the cooperation between the anti-fooling convex edge, the anti-fooling groove, the anti-fooling arrow, and the anti-fooling hole, when assembling the sleeve and the handle, it only needs to align the anti-fooling arrow with the anti-fooling hole, which reduces the alignment difficulty between the sleeve and the handle, and the operation is simple and convenient. Description of the Drawings

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0028] Figure 1 is the overall structural schematic diagram of this embodiment;

[0029] Figure 2 is Figure 1 the partial exploded view of;

[0030] Figure 3 is Figure 2 the partial display diagram of;

[0031] Figure 4 is the exploded view of this embodiment;

[0032] Figure 5 It is another perspective display diagram of this embodiment;

[0033] Figure 6 It is a schematic diagram showing the cooperation relationship between the sealing connection component and the handle in this embodiment.

[0034] Explanation of reference numerals: 10, handle; 11, opening; 12, control panel; 13, conductive plug; 14, anti-fooling convex edge; 15, anti-fooling hole; 16, function button; 20, sleeve; 21, catheter tube; 22, end cap; 23, lashing groove; 30, catheter; 40, camera; 50, light source system; 51, LED micro lamp; 52, LED micro lamp amplifier; 53, light source controller; 70, sealing connection component; 71, connection boss; 711, inclined surface; 712, anti-fooling arrow; 72, first connection part; 73, chute; 74, sliding ring; 741, fixing convex edge; 75, spring; 76, second connection part; 761, conductive pin; 762, anti-fooling groove; 80, connector. Detailed implementation manners

[0035] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the attached Figures 1-6 drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0036] It should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "back", "side", "circumferential", etc. of the present utility model indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present utility model. In addition, the terms such as first and second are only used to distinguish multiple components or structures with the same or similar structures, and do not represent a special limitation on the setting order or connection relationship.

[0037] This embodiment relates to a handheld endoscope with a light source adjustment function. Refer to Figures 1-6, including a handle 10, a sleeve 20, a catheter 30, a camera 40 and a light source system 50. Among them, the handle 10 has an installation cavity with a lateral opening 11 inside. A control panel 12 is arranged in the installation cavity, and the control panel 12 is connected to an external display; the sleeve 20 is detachably arranged on the handle 10 and is detachably connected to the opening 11 of the handle 10; one end of the catheter 30 is hermetically connected to the end of the sleeve 20 away from the handle 10, and the inside of the tube is hollow. The other end of the catheter 30 extends in a direction away from the sleeve 20; the light source system includes an LED micro lamp 51 arranged in the catheter 30 and arranged in parallel with the camera 40, an LED micro lamp amplifier 52 arranged in the sleeve 20, and a light source controller 53 arranged in the sleeve 20 for controlling the current passing through the LED micro lamp amplifier 52. The LED micro lamp 51 is used to provide illumination for the camera 40 so that the camera 40 can take clear pictures. The light source controller 53 is electrically connected to the LED micro lamp 51, the LED micro lamp amplifier 52 and the control panel 12, and is used to change the magnitude of the current passing through the LED micro lamp amplifier 52 to realize the adjustment of the brightness of the LED micro lamp 51 to adapt to the light change during the operation.

[0038] It should be noted that in this embodiment, the end of the sleeve 20 and the catheter 30 are integrally and hermetically connected, and the end of the catheter 30 away from the sleeve 20 is hermetically sealed through transparency to achieve the overall seal of the sleeve 20 and the catheter 30.

[0039] During use, by connecting the handle 10 and the sleeve 20, the assembly of the entire endoscope is completed. At this time, by inserting the thinner part of the catheter 30 into the human body, the camera 40 inside the catheter 30 is used to take pictures of the human body interior and transmit the captured images to the control panel 12. The control panel 12 transmits the images captured by the camera 40 to the external display for display, so as to facilitate the doctor's diagnosis and treatment. The adjustment of the brightness of the LED micro lamp is realized through the light source controller 53, so that the camera 40 can adapt to the light change during the operation, ensuring the image quality captured by the camera 40, so that the doctor can see clear images, which is beneficial to subsequent diagnosis and treatment.

[0040] Furthermore, a sealing connection assembly 70 is arranged between the handle 10 and the sleeve 20 to ensure the airtightness inside the sleeve 20 while realizing the detachable connection between the handle 10 and the sleeve 20, and to make the airtightness between the sleeve 30 and the sealing connection assembly 70 reach the sterilization level, so that the internal electronic devices are not damaged when the sleeve 20 and the catheter 30 are cleaned and sterilized, and can be cleaned and sterilized multiple times, realizing the repeated use or single-use of the sleeve 20 and the catheter 30.

[0041] The sealed connection assembly 70 includes a connection boss 71, a first connection portion 72, and a fixing member. One side of the connection boss 71 is provided with an inclined surface 711. The connection boss 71 can be inserted into the opening 11 of the handle 10. The first connection portion 72 is located on the side of the connection boss 71 with the inclined surface 711. The first connection portion 72 is hermetically connected to the sleeve 20, and the connection method between the first connection portion 72 and the sleeve 20 is welding or hermetic sealing by a special process. The fixing member is used to fix the connection boss 71 in the opening 11, so as to ensure the stability of the connection between the handle 10 and the sleeve 20.

[0042] The fixing member includes a sliding groove 73 opened at the opening 11 of the handle 10, a sliding ring 74 slidably disposed in the sliding groove 73, a fixing convex edge 741 disposed on the sliding ring 74, and a spring 75 for providing an elastic force to the sliding ring 74 to make the fixing convex edge 741 tightly abut against the connection boss 71. Among them, the number of the sliding grooves 73 is two, and the two sliding grooves 73 are symmetrically disposed on the upper and lower sides of the handle 10. Both of the two sliding grooves 73 are located in the opening 11, and both ends of the two sliding grooves 73 penetrate through the handle 10. The sliding ring 74 is generally arranged in a rectangular ring shape (specifically, an inner trapezoid). Both long sides of the sliding ring 74 are slidably connected to the sliding groove 73, and both short sides of the sliding ring 74 are located outside the handle 10. The number of the fixing convex edges 741 is two, and the two fixing convex edges 741 are symmetrically disposed on both sides of the sliding ring 74. A spring groove for accommodating the spring 75 is provided in the handle 10. The spring groove is in the same direction as the sliding groove 73, and the spring 75 abuts against the side wall of the sliding ring 74.

[0043] When connecting the sleeve 20 and the handle 10, by pressing the sliding ring 74, the side facing the handle 10 moves, driving the sliding ring 74 to slide relative to the handle 10, thereby driving the fixing convex edge 741 to move to one side of the opening 11 of the handle 10, so that the connection boss 71 can be smoothly inserted into the opening 11 of the handle 10. At this time, release the sliding ring 74, so that the sliding ring 74 returns to the initial state under the action of the spring 75, so that the fixing convex edge 741 on the sliding ring 74 can tightly abut the connection boss 71 in the opening 11 of the handle 10.

[0044] Further, a second connection portion 76 is provided on the side of the connection boss 71 away from the first connection portion 72. A plurality of conductive posts 13 are uniformly provided on the side of the installation cavity of the handle 10 close to the opening 11. The plurality of conductive posts 13 are all electrically connected to the control panel 12. Conductive pins 761 that are inserted and matched with the conductive posts 13 one by one are provided in the second connection portion 76. The camera 40 and the light source system 50 are both electrically connected to the conductive pins 761.

[0045] It can be understood that through the cooperation of the conductive pins 761 on the second connection portion 76 and the conductive posts 13 in the installation cavity of the handle 10, the electrical connection of the camera 40, the light source system 50, and the control panel 12 is realized.

[0046] Further, an anti-fooling groove 762 is formed on the second connecting portion 76, and an anti-fooling convex edge 14 that is slidably engaged with the anti-fooling groove 762 is provided in the installation cavity of the handle 10.

[0047] Furthermore, a guiding surface is provided at one end of the anti-fooling convex edge 14 facing the opening 11, so that the anti-fooling groove 762 can be smoothly guided onto the anti-fooling convex edge 14.

[0048] Through the cooperation between the anti-fooling groove 762 and the anti-fooling convex edge 14, when assembling the sleeve 20 and the handle 10, it is only necessary to align the anti-fooling groove 762 and the anti-fooling convex edge 14, thereby improving the assembly efficiency.

[0049] Further, an anti-fooling arrow 712 is provided at a position of the connecting boss 71 corresponding to the anti-fooling groove 762, and an anti-fooling hole 15 is provided at a position of the handle 10 corresponding to the anti-fooling arrow 712. When the anti-fooling arrow 712 is aligned with the anti-fooling hole 15, the anti-fooling convex edge 14 and the anti-fooling groove 762 are aligned.

[0050] When assembling the sleeve 20 and the handle 10, the alignment between the anti-fooling convex edge 14 and the anti-fooling groove 762 can be achieved by aligning the anti-fooling arrow 712 with the anti-fooling hole 15. The operation is simple and convenient, reducing the alignment time between the sleeve 20 and the handle 10, and further improving the assembly efficiency.

[0051] Further, the sleeve 20 includes a catheter tube 21 and an end cap 22. The LED micro lamp amplifier 52 and the light source controller 53 are both located inside the catheter tube 21. The end cap 22 is integrally formed with the catheter tube 21 and is located at one end of the catheter tube 21 away from the handle 10. The end cap 22 is hermetically connected to 30 and has a cavity inside. The LED micro lamp amplifier 52 and the light source controller 53 are both located at one end of the catheter tube 21 close to the end cap 22.

[0052] Further, a binding groove 23 is formed on the outer side of the catheter tube 21. The binding groove 23 is arranged along the circumferential direction of the catheter tube 21, and the binding groove 23 is located at one end of the catheter tube 21 close to the handle 10 (specifically, between 1 / 2 and 1 / 3 of the catheter tube 21 close to the handle 10). During use, in order to avoid contamination of the sleeve 20 and the catheter 30, a sterile bag is usually sleeved outside the sleeve 20, so that all parts of the binding groove 23 towards the handle 10 direction (including the handle and the extended wire part) are placed inside the sterile bag. After the sterile bag is sleeved outside the sleeve 20, by using an elastic binding band to cooperate with the binding groove 23, the fixation of the sterile bag can be achieved, so that the sterile bag is not easily detached from the sleeve 20, ensuring the normal progress of the operation.

[0053] Further, a plurality of function buttons 16 are also provided on the handle 10, and the plurality of function buttons 16 are all electrically connected to the control panel 12. In this embodiment, the number of function buttons 16 is six. The six function buttons 16 include a photographing button (long press for photographing), a brightness increasing button, a brightness decreasing button, a focusing increasing button, a focusing decreasing button, and a power on / off button. In other embodiments, the number of function buttons 16 can be adjusted correspondingly according to actual situations, and the functions are not limited to the above several types.

[0054] In addition, the handle 10 is also electrically connected to a connector 80. One end of the connector 80 away from the handle 10 is electrically connected to a plug and a variety of interfaces, so that the images captured by the camera 40 can not only be transmitted to an external display for display, but also be transmitted to display terminals such as mobile phones and computers through a variety of interfaces for display.

[0055] The above is only used to illustrate the technical solution of the present invention and not to limit it. Any other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solution of the present invention should be covered by the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A handheld endoscope with a light source adjustment function, characterized in that, Comprising: A handle (10) with an installation cavity having a lateral opening (11) inside, and a control panel (12) is provided in the installation cavity; A sleeve (20) detachably provided on the handle (10); A catheter (30) with one end hermetically connected to the sleeve (20) and the other end extending away from the sleeve (20); A camera (40) provided at the end of the catheter (30) away from the sleeve (20), electrically connected to the control panel (12) for taking images of the human body interior; and A light source system (50) including an LED micro lamp (51) provided in the catheter (30) and arranged in parallel with the camera (40), an LED micro lamp amplifier (52) provided in the sleeve (20), and a light source controller (53) provided in the sleeve (20) for controlling the current passing through the LED micro lamp amplifier.

2. The hand-held endoscope with a light source adjustment function according to claim 1, characterized in that, A sealing connection assembly (70) is provided between the handle (10) and the sleeve (20) to achieve the detachable connection between the handle (10) and the sleeve (20) through the sealing connection assembly (70) while ensuring the sealing inside the sleeve (20). The sealing connection assembly (70) includes: A connecting boss (71) with an inclined surface (711) on one side for insertion into the opening (11) of the handle (10); A first connecting portion (72) provided on the side of the connecting boss (71) having the inclined surface (711), hermetically connected to the sleeve (20); and A fixing member for fixing the connecting boss (71) in the opening (11) to ensure the stability of the connection between the handle (10) and the sleeve (20).

3. The hand-held endoscope with a light source adjustment function according to claim 2, wherein, The fixing member includes a chute (73) opened at the opening (11) of the handle (10), a sliding ring (74) slidably arranged in the chute (73), a fixing convex edge (741) provided on the sliding ring (74), and a spring (75) for providing an elastic force to the sliding ring (74) to make the fixing convex edge (741) tightly abut against the connecting boss (71). The sliding ring (74) can slide in a direction perpendicular to the axis of the opening (11) of the handle (10). The fixing convex edge (741) is used to abut against the side wall of the connecting boss (71). The spring (75) is arranged along the length direction of the chute (73) and abuts against the sliding ring (74). During connection, by driving the sliding ring (74) to move, the connecting boss (71) can smoothly enter the opening (11) of the handle (10). After the connecting boss (71) enters the opening (11), the sliding ring (74) automatically resets under the action of the spring (75), driving the fixing convex edge (741) to tightly abut against the connecting boss (71).

4. The hand-held endoscope with a light source adjustment function according to claim 2, characterized in that, On one side of the connecting boss (71) away from the first connecting portion (72), a second connecting portion (76) is provided. On one side of the installation cavity of the handle (10) close to the opening (11), a plurality of conductive posts (13) are evenly arranged. All the plurality of conductive posts (13) are electrically connected to the control panel (12). A conductive pin (761) matching with the conductive posts (13) is arranged in the second connecting portion (76). The camera (40) and the light source system (50) are both electrically connected to the conductive pin (761).

5. The hand-held endoscope with a light source adjustment function according to claim 4, characterized in that, An anti-fooling groove (762) is formed in the second connecting portion (76). An anti-fooling convex edge (14) which is in sliding fit with the anti-fooling groove (762) is arranged in the installation cavity.

6. The hand-held endoscope with a light source adjustment function according to claim 5, characterized in that, The anti-fooling convex edge (14) is provided with a guiding surface at one end facing the opening (11) so that the anti-fooling groove (762) can be smoothly guided onto the anti-fooling convex edge (14).

7. The hand-held endoscope with a light source adjustment function according to claim 6, characterized in that, An anti-fooling arrow (712) is provided at the position of the connecting boss (71) corresponding to the anti-fooling groove (762). An anti-fooling hole (15) is provided at the position of the handle (10) corresponding to the anti-fooling arrow (712). When the anti-fooling arrow (712) is aligned with the anti-fooling hole (15), the anti-fooling convex edge (14) and the anti-fooling groove (762) are aligned.

8. The hand-held endoscope with a light source adjustment function according to claim 1, characterized in that, The sleeve (20) includes a catheter tube (21) and an end cap (22). The LED micro lamp amplifier (52) and the light source controller (53) are both located inside the catheter tube (21). The end cap (22) is integrally formed with the catheter tube (21) and is located at one end of the catheter tube (21) away from the handle (10). A through hole for the catheter (30) to penetrate is formed in the end cap (22).

9. The hand-held endoscope with a light source adjustment function according to claim 1, characterized in that, A binding groove (23) is formed on the outer side of the sleeve (20). The binding groove (23) is arranged along the circumferential direction of the sleeve (20), and the binding groove (23) is located at one end of the sleeve (20) close to the handle (10).

10. The hand-held endoscope with a light source adjustment function according to claim 1, wherein, A plurality of function keys (16) are arranged on the handle (10). All the plurality of function keys (16) are electrically connected to the control panel (12). The function keys (16) include a photographing key, a brightness increasing key, a brightness decreasing key, a focusing increasing key, a focusing decreasing key and a power on / off key.