A variable-focus endoscope

Abstract

The present invention relates to the technical field of endoscopes, and provides a variable-focus endoscope, which includes a handheld housing, a collar, a lens tube, a lens assembly, a rotating housing, a fixing bracket, a collecting assembly, an adjusting assembly, and a liquid drainage assembly. The collar is fixedly installed on the handheld housing, the lens tube is rotatably installed inside the collar, one end of the lens tube is located inside the handheld housing, the lens assembly is installed at the end of the lens tube away from the collar, the rotating housing is fixedly installed on the lens tube, the fixing bracket is fixedly installed on the handheld housing, the fixing bracket is rotatably connected to the rotating housing, the collecting assembly is installed on the fixing bracket, the adjusting assembly is installed on the handheld housing, and the liquid drainage assembly is installed inside the lens assembly. Through the above technical solution, the problem in the prior art that due to environmental factors and the influence of the operator's level, the field of view may be limited during the use of the endoscope for observation, resulting in difficulty in clear observation, is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of endoscopes, and particularly to a variable-focus endoscope. Background Art

[0002] An endoscope is a medical imaging device used to observe various organs and tissues through the human body. It usually consists of a slender lens that can be inserted into different parts of the human body, such as the gastrointestinal tract, respiratory tract, urinary tract, etc., to clearly show the subtle changes in structures such as tissues, blood vessels, cavities, and mucosal folds, thereby obtaining information about the internal structure and condition of the body, which helps doctors clarify the nature, scope, and severity of the lesion, and provides a basis for formulating appropriate diagnosis and treatment plans.

[0003] The operation process of the endoscope is relatively complex. Doctors need to undergo strict training and accumulate practical experience to master it proficiently and ensure the safety of patients. Moreover, most endoscopes provide real-time images, which may be affected by resolution, thus potentially affecting doctors' ability to detect some minor abnormalities. In addition, endoscopes cannot provide structural information like other imaging technologies such as X-rays. Therefore, in some cases, it may be difficult to determine the scope and location of the lesion, thereby affecting the observation effect.

[0004] An inappropriate observation angle of the endoscope may also cause image blurring, distortion, and loss of authenticity, resulting in a limited field of view and making it difficult to accurately judge the specific situation of the observed position, which greatly increases the operation difficulty. Summary of the Invention

[0005] The present invention provides a variable-focus endoscope, which solves the problem that in the process of using an endoscope for observation, the field of view may be limited due to environmental factors and the influence of the operator's level, resulting in difficulty in clear observation.

[0006] The technical solution of the present invention is as follows:

[0007] A variable-focus endoscope includes:

[0008] A handheld housing;

[0009] A sleeve, which is fixedly installed on the handheld housing;

[0010] A lens tube, which is rotatably installed inside the sleeve, and one end of the lens tube is located inside the handheld housing;

[0011] A lens assembly, which is installed at one end of the lens tube away from the sleeve and is used for collecting images;

[0012] A rotating shell, which is fixedly installed on the lens tube;

[0013] A fixing bracket, which is fixedly installed on the handheld housing, and the fixing bracket is rotatably connected to the rotating housing;

[0014] A collecting component, which is installed on the fixing bracket and is used for collecting the images collected by the lens component;

[0015] An adjusting component, which is installed on the handheld housing and is used for adjusting the position of the lens component;

[0016] A liquid discharging component, which is installed inside the lens component and is used for discharging liquid.

[0017] On the basis of the foregoing solution, the lens component includes:

[0018] A lens barrel, which is fixedly installed at one end of the lens tube away from the ring sleeve;

[0019] A zoom lens, which is fixedly installed at one end of the lens barrel away from the lens tube;

[0020] A lighting lamp, which is fixedly installed on the lens barrel, and the lighting lamp is located above the zoom lens.

[0021] On the basis of the foregoing solution, the collecting component includes:

[0022] A collecting wire harness, which is arranged inside the lens tube, and one end of the collecting wire harness is electrically connected to the zoom lens;

[0023] Wherein, the position where the collecting wire harness contacts the fixing bracket is in rotational fit;

[0024] A first connector, which is fixedly installed at one end of the fixing bracket away from the lens tube, and the first connector is rotatably connected to the other end of the collecting wire harness;

[0025] A second wire harness, which is arranged inside the handheld housing, and one end of the second wire harness is fixedly connected to the first connector.

[0026] On the basis of the foregoing solution, the adjusting component includes:

[0027] A rotating cylinder, which is rotatably installed inside the handheld housing, and the rotating cylinder is fixedly connected to the lens tube;

[0028] An outer ring, which is rotatably installed on the handheld housing, and the rotating cylinder is located inside the outer ring;

[0029] A transmission part, which is installed on the handheld housing and is used for transmitting power.

[0030] Based on the foregoing solution, the transmission part includes:

[0031] An outer gear ring fixedly installed on the rotating cylinder;

[0032] An inner gear ring fixedly installed inside the outer ring, with the outer gear ring located inside the inner gear ring;

[0033] Two transmission gears symmetrically and rotatably installed on the handheld housing, and the two transmission gears are respectively meshed with the outer gear ring and the inner gear ring.

[0034] Based on the foregoing solution, it further includes an instrument tube fixedly installed inside the mirror tube. One end of the instrument tube is installed on the lens barrel, and the connection position between the instrument tube and the lens barrel is located below the zoom lens. The other end of the instrument tube is fixedly connected to the rotating housing;

[0035] An arc-shaped frame fixedly installed on the fixed frame and adapted to the instrument tube.

[0036] Based on the foregoing solution, the liquid discharge assembly includes:

[0037] Two water pipes fixedly installed inside the mirror tube. One ends of the two water pipes are located inside the lens barrel, and the two water pipes are symmetrically arranged relative to the instrument tube;

[0038] Connecting pipes. One ends of the two water pipes located in the lens barrel are equally spaced and communicated with a plurality of the connecting pipes, and the connecting pipes are communicated with the lens barrel;

[0039] A water supply part installed on the fixed frame for supplying water;

[0040] A drainage part installed on the water supply part for draining water.

[0041] Based on the foregoing solution, the water supply part includes:

[0042] Two pipe joints fixedly installed on both sides of the handheld housing and symmetrically arranged;

[0043] A docking ring fixedly installed on the fixed frame, and the docking ring is hermetically and rotatably connected to the rotating housing.

[0044] Based on the foregoing solution, it further includes:

[0045] Cavities are respectively opened on both sides inside the docking ring;

[0046] Pipeline, and pipelines are communicated between the two pipe connectors and the two cavities respectively.

[0047] On the basis of the foregoing solution, the drainage part includes:

[0048] Drainage shells, two drainage shells are symmetrically and fixedly installed on the rotating shell, and the two drainage shells are respectively communicated with the two water pipes;

[0049] Through grooves, the through grooves are arranged at positions where the two cavities are close to the rotating shell, and the through grooves are adapted to the drainage shells.

[0050] The working principle and beneficial effects of the present invention are as follows:

[0051] 1. In the present invention, the information observed by the zoom lens is transmitted through the collection wire harness. Through the setting of the first connector, the information is transmitted to the second wire harness, and the second wire harness is connected to the display device. Thus, the information collected is converted into an image in real time through the display device, which is convenient for observation and recording. When adjusting the position of the lens tube, the lens tube will rotate relative to the collar at this time, and the lens tube will drive the collection wire harness to rotate at this time. Through the setting of the first connector, the first connector will rotate relative to the collection wire harness, avoiding the torsion of the collection wire harness and improving the stability of information transmission.

[0052] 2. In the present invention, the instrument tube is used for the passage of external instruments, so that operations such as drug administration, tissue collection, and surgery can be performed on the examination site through the external instruments. Through the setting of the arc-shaped frame, during the process of adjusting the position of the lens barrel, a displacement space can be provided for the external instruments, and interference between the instruments and other components can be avoided, improving the stability during use.

[0053] 3. In the present invention, when adjusting the position of the lens tube, the lens tube will drive the rotating shell to rotate, and the rotating shell will drive the drainage shell to rotate at this time. Through the cooperation of the through groove and the cavity, the passage and entry of liquid will not be affected.

[0054] 4. In the present invention, through the setting of the adjustment component, in cooperation with the lens component, when adjusting the position of the lens tube, the transmission of information will not be affected. At the same time, the focal length is automatically adjusted by the zoom lens to adapt to the distance change between the lens position of the zoom lens and the observation position, so as to facilitate observation. Through the setting of the liquid drainage component, not only can liquid be supplied to a specified part, but also the excess liquid can be drained out, thereby reducing the discomfort of the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] The following further describes the present invention in detail with reference to the drawings and specific embodiments.

[0056] Figure 1 It is a schematic diagram of the overall structure in the present invention;

[0057] Figure 2 It is a schematic diagram of the overall structure from another angle in the present invention;

[0058] Figure 3 It is a schematic three-dimensional structure diagram of the cross-section in the present invention;

[0059] Figure 4 It is a schematic cross-sectional structure diagram of the lens assembly in the present invention;

[0060] Figure 5 It is a schematic cross-sectional structure diagram of the adjustment assembly in the present invention;

[0061] Figure 6 It is a schematic structure diagram of the cooperation between the outer ring and the inner gear ring in the present invention;

[0062] Figure 7 It is a schematic cross-sectional structure diagram of the liquid discharge assembly in the present invention;

[0063] Figure 8 It is a schematic cross-sectional structure diagram of the cooperation between the collection assembly and the liquid discharge assembly in the present invention;

[0064] Figure 9 It is a schematic cross-sectional structure diagram of the cooperation between the water supply part and the drainage part in the present invention.

[0065] The reference numerals in the figure respectively represent: 1, hand-held housing; 2, ring sleeve; 3, lens tube; 4, rotating housing; 5, fixing frame; 6, lens barrel; 7, zoom lens; 8, lighting lamp; 9, collection wire harness; 10, first connector; 11, second wire harness; 12, rotating cylinder; 13, outer ring; 14, outer gear ring; 15, inner gear ring; 16, transmission gear; 17, instrument tube; 18, arc-shaped frame; 19, water pipe; 20, connecting pipe; 21, pipe joint; 22, docking ring; 23, cavity; 24, pipeline; 25, drainage housing; 26, through groove. Detailed implementation manners

[0066] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present invention.

[0067] Such as Figures 1 to 9As shown in the figure, a variable-focus endoscope includes a handheld housing 1, a collar 2, a lens tube 3, a lens assembly, a rotating housing 4, a fixing bracket 5, a collecting assembly, an adjusting assembly, and a drainage assembly. The collar 2 is fixedly installed on the handheld housing 1, and the lens tube 3 is rotatably installed inside the collar 2. One end of the lens tube 3 is located inside the handheld housing 1, and the lens assembly is installed at the end of the lens tube 3 away from the collar 2 for collecting images. The lens assembly includes a lens barrel 6, a zoom lens 7, and a lighting lamp 8. The lens barrel 6 is fixedly installed at the end of the lens tube 3 away from the collar 2, the zoom lens 7 is fixedly installed at the end of the lens barrel 6 away from the lens tube 3, and the lighting lamp 8 is fixedly installed on the lens barrel 6. The lighting lamp 8 is located above the zoom lens 7.

[0068] Specifically, endoscopes are often used for examinations of the digestive tract. When observing with the lens assembly, first hold the handheld housing 1, drive the lens tube 3 to move through the handheld housing 1. Through the setting of the lens tube 3, extend the lens barrel 6 to the observation position. At this time, start the lighting lamp 8 and the zoom lens 7. Through the cooperation of the lighting lamp 8 and the zoom lens 7, observe the observation site. Through the setting of the collecting assembly, the collecting assembly is connected to the display device, so that the image observed by the zoom lens 7 is transmitted to the display device. During the inspection process, when the field of view of the zoom lens 7 is restricted, start the adjusting assembly to adjust the position of the lens tube 3, and at the same time automatically adjust the focal length through the zoom lens 7 to adapt to the distance change between the lens position of the zoom lens 7 and the observation position, so as to facilitate observation. At the same time, through the setting of the drainage assembly, when it is necessary to collect tissues of certain parts during the inspection process, absorb the possible body fluids, thereby reducing the discomfort of the patient. When it is necessary to administer drugs to certain parts of the digestive tract, the drainage assembly can also be used to complete.

[0069] As Figure 3 shown in the figure, the rotating housing 4 is fixedly installed on the lens tube 3, the fixing bracket 5 is fixedly installed on the handheld housing 1, the fixing bracket 5 is rotatably connected to the rotating housing 4, and the collecting assembly is installed on the fixing bracket 5 for collecting the images collected by the lens assembly. The collecting assembly includes a collecting wire harness 9, a first connector 10, and a second wire harness 11. The collecting wire harness 9 is arranged inside the lens tube 3, and one end of the collecting wire harness 9 is electrically connected to the zoom lens 7. Among them, the position where the collecting wire harness 9 contacts the fixing bracket 5 is a rotational fit. The first connector 10 is fixedly installed at the end of the fixing bracket 5 away from the lens tube 3, and the first connector 10 is rotatably connected to the other end of the collecting wire harness 9. The second wire harness 11 is arranged inside the handheld housing 1, and one end of the second wire harness 11 is fixedly connected to the first connector 10.

[0070] Specifically, when observing a part using the zoom lens 7, the information observed by the zoom lens 7 is transmitted through the collection wire harness 9. Through the setting of the first connector 10, the information is transmitted to the second wire harness 11. The second wire harness 11 is connected to the display device, so that the collected information is converted into an image in real time through the display device, which is convenient for observation and recording. When adjusting the position of the lens barrel 3, at this time, the lens barrel 3 will rotate relative to the collar 2. At this time, the lens barrel 3 will drive the collection wire harness 9 to rotate. Through the setting of the first connector 10, the first connector 10 will rotate relative to the collection wire harness 9, avoiding the torsion of the collection wire harness 9 and improving the stability of information transmission.

[0071] As Figure 5 , Figure 6 shown, the adjustment assembly is installed on the handheld housing 1 for adjusting the position of the lens assembly. The adjustment assembly includes a rotating cylinder 12, an outer ring 13 and a transmission part. The rotating cylinder 12 is rotatably installed inside the handheld housing 1. The rotating cylinder 12 is fixedly connected to the lens barrel 3. The outer ring 13 is rotatably installed on the handheld housing 1. The rotating cylinder 12 is located inside the outer ring 13. The transmission part is installed on the handheld housing 1 for transmitting power. The transmission part includes an external gear ring 14, an internal gear ring 15 and a transmission gear 16. The external gear ring 14 is fixedly installed on the rotating cylinder 12. The internal gear ring 15 is fixedly installed inside the outer ring 13. The external gear ring 14 is located inside the internal gear ring 15. Two transmission gears 16 are symmetrically and rotatably installed on the handheld housing 1. The two transmission gears 16 are respectively meshed with the external gear ring 14 and the internal gear ring 15.

[0072] Specifically, when adjusting the position of the lens barrel 3, hold and turn the outer ring 13. The outer ring 13 drives the internal gear ring 15 to rotate. The internal gear ring 15 drives the transmission gear 16 to rotate. The transmission gear 16 drives the external gear ring 14 to rotate. The external gear ring 14 drives the rotating cylinder 12 to rotate, thereby driving the lens barrel 3 to rotate in the collar 2, so as to adjust the angular position of the lens barrel 3 by a certain angle.

[0073] As described above, as Figure 8 shown, it further includes an instrument tube 17 and an arc-shaped frame 18. The instrument tube 17 is fixedly installed inside the lens barrel 3. One end of the instrument tube 17 is installed on the lens barrel 6. The connection position of the instrument tube 17 and the lens barrel 6 is located below the zoom lens 7. The other end of the instrument tube 17 is fixedly connected to the rotating shell 4. The arc-shaped frame 18 is fixedly installed on the fixed frame 5. The arc-shaped frame 18 is adapted to the instrument tube 17.

[0074] Specifically, the instrument tube 17 is used for the passage of external instruments, so as to perform operations such as drug administration, tissue collection, and surgery on the examination site through the external instruments. Through the setting of the arc-shaped frame 18, during the process of adjusting the position of the lens barrel 6, a displacement space can be provided for the external instruments, and the instruments are prevented from interfering with other components.

[0075] As Figures 7 to 9 shown, the liquid drainage assembly is installed inside the lens assembly and is used to drain liquid. The liquid drainage assembly includes a water pipe 19, a connecting pipe 20, a water supply part and a drainage part. There are two water pipes 19. The two water pipes 19 are fixedly installed inside the lens tube 3. One end of the two water pipes 19 is located inside the lens barrel 6. The two water pipes 19 are symmetrically arranged relative to the instrument tube 17. A plurality of connecting pipes 20 are equally spaced and communicated at one end of the lens barrel 6 where the two water pipes 19 are located. The connecting pipe 20 is communicated with the lens barrel 6. The water supply part is installed on the fixing bracket 5 and is used for water supply. The drainage part is installed on the water supply part and is used for drainage.

[0076] Specifically, when it is necessary to administer medicine to certain parts of the digestive tract, first connect the liquid supply device and the liquid suction device to the water supply part respectively. At the same time, through the setting of the drainage part, turn on the liquid supply device, drain the liquid into one of the water pipes 19, and then through the setting of the corresponding connecting pipe 20, administer medicine to the designated part. Then when it is necessary to absorb body fluid, start the liquid suction device to suck away the body fluid at the designated part, so as to realize the function of administering medicine or absorbing body fluid to the designated part.

[0077] As described above, as Figure 9 shown, the water supply part includes a pipe joint 21 and a docking ring 22. There are two pipe joints 21. The two pipe joints 21 are fixedly installed on both sides of the handheld housing 1. The two pipe joints 21 are symmetrically arranged. The docking ring 22 is fixedly installed on the fixing bracket 5. The docking ring 22 is hermetically and rotationally connected to the rotating shell 4. It also includes a cavity 23 and a pipeline 24. Cavities 23 are respectively provided on both sides inside the docking ring 22. Pipelines 24 are communicated between the two pipe joints 21 and the two cavities 23.

[0078] Specifically, when supplying liquid, connect the liquid supply device to one of the pipe joints 21, drain the liquid into the pipeline 24 through the pipe joint 21, and then drain the liquid into the cavity 23 through the pipeline 24 to realize liquid supply. When absorbing body fluid, connect the liquid suction device to the other pipe joint 21, suck the liquid at the designated part into the water pipe 19 through the corresponding connecting pipe 20, and enter the corresponding pipeline 24 through the other cavity 23, and then it can be sucked away by the liquid suction device.

[0079] As described above, as Figure 9 shown, the drainage part includes a drainage shell 25 and a through groove 26. Two drainage shells 25 are symmetrically and fixedly installed on the rotating shell 4. The two drainage shells 25 are respectively communicated with the two water pipes 19. Through grooves 26 are respectively opened at positions of the two cavities 23 close to the rotating shell 4. The through groove 26 is adapted to the drainage shell 25.

[0080] Specifically, during liquid supply, the liquid entering the corresponding cavity 23 will enter the corresponding drain housing 25 through the through groove 26, and then enter the corresponding water pipe 19 to achieve liquid supply. When adjusting the position of the lens tube 3, the lens tube 3 will drive the rotating housing 4 to rotate. At this time, the rotating housing 4 will drive the drain housing 25 to rotate. Through the cooperation of the through groove 26 and the cavity 23, the passage and entry of the liquid will not be affected.

[0081] In summary, the endoscope is commonly used for the examination of the digestive tract. When observing with the zoom lens 7, first hold the handheld housing 1, drive the lens tube 3 to move through the handheld housing 1, and extend the lens barrel 6 to the observation position through the setting of the lens tube 3. At this time, start the lighting lamp 8 and the zoom lens 7, and observe the observation site through the cooperation of the lighting lamp 8 and the zoom lens 7. The information observed by the zoom lens 7 will be transmitted through the collection wire harness 9. Through the setting of the first connector 10, the information will be transmitted to the second wire harness 11, and the second wire harness 11 is connected to the display device, so that the information collected by the display device can be converted into an image in real time, which is convenient for observation and recording.

[0082] When the field of view of the zoom lens 7 is restricted, it is necessary to adjust the position of the lens tube 3. Hold and turn the outer ring 13, the outer ring 13 drives the internal gear ring 15 to rotate, the internal gear ring 15 drives the transmission gear 16 to rotate, the transmission gear 16 drives the external gear ring 14 to rotate, and the external gear ring 14 drives the rotating cylinder 12 to rotate, thereby driving the lens tube 3 to rotate in the collar 2, so as to adjust the angular position of the lens tube 3 by a certain angle. At this time, the lens tube 3 will rotate relative to the collar 2. At this time, the lens tube 3 will drive the collection wire harness 9 to rotate. Through the setting of the first connector 10, the first connector 10 will rotate relative to the collection wire harness 9, avoiding the torsion of the collection wire harness 9 and improving the stability of information transmission. At the same time, the zoom lens 7 automatically adjusts the focal length to adapt to the distance change between the lens position of the zoom lens 7 and the observation position, which is convenient for observation. At the same time, as the lens tube 3 rotates, it drives the rotating housing 4 to rotate. At this time, the rotating housing 4 will drive the drain housing 25 to rotate. Through the cooperation of the through groove 26 and the cavity 23, the passage and entry of the liquid will not be affected.

[0083] The instrument tube 17 is used for the passage of external instruments, so that operations such as drug administration, tissue collection, and surgery can be performed on the examination site through the external instruments. Through the setting of the arc-shaped frame 18, during the process of adjusting the position of the lens barrel 6, a displacement space can be provided for the external instruments, and the instruments can be prevented from interfering with other components.

[0084] When it is necessary to collect tissues from certain parts during the inspection, absorb the possible body fluids to reduce the discomfort of the patient. When it is necessary to administer drugs to certain parts of the digestive tract, the liquid drainage component can also be used. When it is necessary to administer drugs to certain parts of the digestive tract, first connect the liquid supply device and the liquid absorption device to the corresponding pipe joints 21 respectively. When supplying liquid, the liquid is discharged into the pipeline 24 through the pipe joint 21, and then the liquid is discharged into the cavity 23 through the pipeline 24. The liquid entering the corresponding cavity 23 will enter the corresponding drain housing 25 through the through groove 26, and then enter the corresponding water pipe 19 to achieve liquid supply. When absorbing body fluids, connect the liquid absorption device to another pipe joint 21, suck the liquid at the specified part into the water pipe 19 through the corresponding connecting pipe 20, and enter the corresponding pipeline 24 through another cavity 23, and then it can be sucked away by the liquid absorption device.

[0085] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A variable-focus endoscope, characterized in that, Comprising: A handheld housing (1); A collar (2), which is fixedly installed on the handheld housing (1); A lens tube (3), which is rotatably installed inside the collar (2), and one end of the lens tube (3) is located inside the handheld housing (1); A lens assembly, which is installed at one end of the lens tube (3) away from the collar (2) for collecting images; The lens assembly includes: A lens barrel (6), which is fixedly installed at one end of the lens tube (3) away from the collar (2); A zoom lens (7), which is fixedly installed at one end of the lens barrel (6) away from the lens tube (3); A lighting lamp (8), which is fixedly installed on the lens barrel (6), and the lighting lamp (8) is located above the zoom lens (7); A rotating shell (4), which is fixedly installed on the lens tube (3); A fixing bracket (5), which is fixedly installed on the handheld housing (1), and the fixing bracket (5) is rotatably connected to the rotating shell (4); A collecting assembly, which is installed on the fixing bracket (5) for collecting the images collected by the lens assembly; The collecting assembly includes: A collecting wire harness (9), which is arranged inside the lens tube (3), and one end of the collecting wire harness (9) is electrically connected to the zoom lens (7); Wherein, the position where the collecting wire harness (9) contacts the fixing bracket (5) is a rotational fit; A first connector (10), which is fixedly installed at one end of the fixing bracket (5) away from the lens tube (3), and the first connector (10) is rotatably connected to the other end of the collecting wire harness (9); A second wire harness (11), which is arranged inside the handheld housing (1), and one end of the second wire harness (11) is fixedly connected to the first connector (10); An adjusting assembly, which is installed on the handheld housing (1) for adjusting the position of the lens assembly; A liquid discharging assembly, which is installed inside the lens assembly for discharging liquid.

2. The variable-focus endoscope according to claim 1, characterized in that, The adjusting assembly includes: A rotating cylinder (12), which is rotatably installed inside the handheld housing (1), and the rotating cylinder (12) is fixedly connected to the lens tube (3); An outer ring (13), which is rotatably installed on the handheld housing (1), and the rotating cylinder (12) is located inside the outer ring (13); A transmission part, which is installed on the handheld housing (1) for transmitting power.

3. The variable-focus endoscope according to claim 2, wherein, The transmission part includes: An external gear ring (14), which is fixedly installed on the rotating cylinder (12); An internal gear ring (15), which is fixedly installed inside the outer ring (13), and the external gear ring (14) is located inside the internal gear ring (15); The drive gears (16), two of the drive gears (16) are symmetrically and rotatably mounted on the handheld housing (1), and the two drive gears (16) are respectively meshed with the external tooth ring (14) and the internal tooth ring (15).

4. The variable-focus endoscope according to claim 3, characterized in that, It further includes an instrument tube (17), the instrument tube (17) is fixedly installed inside the mirror tube (3), one end of the instrument tube (17) is installed on the lens barrel (6), and the connection position of the instrument tube (17) and the lens barrel (6) is located below the zoom lens (7), and the other end of the instrument tube (17) is fixedly connected to the rotating shell (4); An arc-shaped frame (18), the arc-shaped frame (18) is fixedly installed on the fixed frame (5), and the arc-shaped frame (18) is adapted to the instrument tube (17).

5. The variable-focus endoscope according to claim 4, characterized in that, The liquid discharge assembly includes: Water pipes (19), there are two water pipes (19), the two water pipes (19) are fixedly installed inside the mirror tube (3), one ends of the two water pipes (19) are located inside the lens barrel (6), and the two water pipes (19) are symmetrically arranged relative to the instrument tube (17); Connecting pipes (20), one ends of the two water pipes (19) located inside the lens barrel (6) are equally spaced and communicated with a plurality of the connecting pipes (20), and the connecting pipes (20) are communicated with the lens barrel (6); A water supply part, which is installed on the fixed frame (5) and is used for supplying water; A drainage part, which is installed on the water supply part and is used for draining water.

6. The zoomable endoscope according to claim 5, characterized in that, The water supply part includes: Pipe connectors (21), there are two pipe connectors (21), the two pipe connectors (21) are fixedly installed on both sides of the handheld housing (1), and the two pipe connectors (21) are symmetrically arranged; A docking ring (22), the docking ring (22) is fixedly installed on the fixed frame (5), and the docking ring (22) is hermetically and rotatably connected to the rotating shell (4).

7. The zoomable endoscope according to claim 6, characterized in that, It further includes: Cavities (23), cavities (23) are respectively opened on both sides inside the docking ring (22); Pipeline (24), pipelines (24) are communicated between the two pipe connectors (21) and the two cavities (23).

8. The variable-focus endoscope according to claim 7, wherein, The drainage part includes: Drainage shells (25), two drainage shells (25) are symmetrically and fixedly installed on the rotating shell (4), and the two drainage shells (25) are respectively communicated with the two water pipes (19); Through grooves (26), through grooves (26) are respectively opened at positions of the two cavities (23) close to the rotating shell (4), and the through grooves (26) are adapted to the drainage shells (25).

Images