A thyroid laparoscope with self-cleaning lens

Abstract

The invention discloses a lens self-cleaning thyroid laparoscope, comprising a laparoscope body, a sleeve and a scrubbing device, wherein the cleaning sleeve is sleeved on the laparoscope body, and a transparent plate parallel to the lens of the laparoscope body is provided at the end of the cleaning sleeve; the scrubbing device comprises a rotating driving mechanism, a driving rod, a pull rope and a scrubbing belt, and arc-shaped sliding grooves are provided on both sides of the sleeve; the cross section of the driving rod is an arc-shaped, and the driving rod passes through the sliding groove and can rotate around the axis of the sleeve in the sliding groove, and the front ends of the two driving rods are respectively connected to the two ends of the scrubbing belt through the pull rope, and the rotating driving mechanism drives the two driving rods to rotate along the sliding groove, and the two driving rods move up and down in the sliding groove at the same time, and the driving rod pulls the scrubbing belt to scrub up and down close to the surface of the transparent plate through the pull rope, and the pull rope is elastic. The lens self-cleaning thyroid laparoscope of the invention can automatically clean the laparoscope lens, and there is no need to take it out for manual cleaning, thereby improving efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a thyroid laparoscope with a self-cleaning lens. Background Art

[0002] As an advanced medical device, thyroid laparoscope plays an extremely important role in thyroid-related surgeries. It enters the human body through a tiny incision, providing doctors with a visual view of the surgical site. Compared with traditional open surgery, it has significant advantages such as less trauma, faster recovery, and less obvious postoperative scars, which greatly reduces the pain of patients and improves the aesthetics of the surgery.

[0003] However, there is a rather thorny problem in the actual use of thyroid laparoscopes. Due to the particularity of the surgical operating environment, the laparoscope lens is easily contaminated by blood lipids and oils in the patient's body during the operation. Once the lens is covered by these obstructions, the field of view provided by the laparoscope will become blurred, seriously affecting the doctor's accurate judgment and operation of the surgical site.

[0004] At present, when encountering such a situation where the lens is blocked, it is usually necessary to remove the laparoscope from the patient's body and then manually clean the lens. After cleaning, considering the sterile requirements of the operation, the lens must be strictly disinfected before being put back into the patient's body. This series of operations is not only cumbersome and consumes a lot of valuable surgical time, but also increases the risk of surgical infection in the process of repeatedly taking out and putting back the laparoscope, which brings many inconveniences and potential hidden dangers to the smooth progress of the operation. At the same time, frequent manual cleaning and disinfection operations also cause a certain degree of wear and tear on the laparoscope equipment itself, reducing the service life of the equipment and increasing medical costs. Therefore, there is an urgent need for a technical solution that can automatically clean the lens during the use of the laparoscope and ensure the cleaning effect and sterile environment, so as to overcome the various shortcomings of the prior art. Summary of the invention

[0005] In order to solve the above problems in the prior art, the present invention proposes a self-cleaning thyroid laparoscope, which can automatically clean the lens of the laparoscope to ensure a clear camera image without the need to remove the lens, is easy to operate, and improves efficiency.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows: a lens self-cleaning thyroid laparoscope, comprising a laparoscope body, a sleeve and a scrubbing device, wherein the sleeve is sleeved on the laparoscope body, and a transparent plate parallel to the lens of the laparoscope tube body is provided at the end of the sleeve; the scrubbing device comprises a rotating driving mechanism, a driving rod, a pull rope and a scrubbing belt, and arc-shaped sliding grooves are provided on both sides of the sleeve; the cross-section of the driving rod is an arc-shaped, and the driving rod passes through the sliding groove and can rotate around the axis of the sleeve in the sliding groove, and the front ends of the two driving rods are respectively connected to the two ends of the scrubbing belt through the pull rope, and the rotating driving mechanism drives the two driving rods to rotate along the sliding groove, and the two driving rods move up and down in the sliding groove at the same time, and the driving rod pulls the scrubbing belt to scrub up and down close to the surface of the transparent plate through the pull rope, and the pull rope is elastic.

[0007] Furthermore, the sleeve includes an inner tube, a cushion layer, and an outer tube. The inner tube is sleeved on the cannula of the laparoscope body. The transparent plate is arranged on the top of the inner tube. The inner tube and the outer tube are separated by a cushion layer. The cushion layer is composed of a top cushion block and a bottom cushion block. The gap between the top cushion block and the bottom cushion block is the sliding groove.

[0008] Further, the rotation drive mechanism comprises a motor, a gear ring and a gear, the gear ring is sleeved on the outer wall of the inner cylinder, the inner wall of the outer cylinder is provided with two rotation grooves, the gear ring is located in the rotation groove, there is a gap between the inner wall of the rotation groove and the teeth of the outer wall of the gear ring, and the two sides of the rotation groove block the two sides of the gear ring to prevent the gear ring from moving axially along the inner cylinder; there are two motors, the gears are installed on the two motor shafts, the two gears are located on both sides of the outer cylinder, the two sides of the outer cylinder are provided with first notches, and the two gears are respectively meshed with different gear rings at the first notches;

[0009] An insertion rod is provided at the rear end of the driving rod, and the two driving rods are respectively connected to different gear rings through the insertion rod. An avoidance groove is provided on the inner side of the gear ring to avoid blocking the insertion rod connected to another gear ring.

[0010] Furthermore, a limiting groove is provided on the inner wall of the outer cylinder at the sliding groove, and the plane where the limiting groove is located is parallel to the transparent plate; a limiting block is provided on the outer side of the driving rod, and the limiting block is embedded in the limiting groove, and a through hole is provided on the gear ring, and the plug rod passes through the through hole on the gear ring, and the plug rod is slidably connected with the gear ring. The axial distance between each point on the axis of the limiting groove and the edge line of the transparent plate is equal everywhere, and when the driving rod is driven by the rotating driving mechanism to rotate in the sliding groove, the limiting block moves along the limiting groove, driving the driving rod to move forward and backward, and the distance between the front end of the driving rod and the edge of the transparent plate remains unchanged. Since the lens of the laparoscope tube body is inclined, the transparent plate fits the lens of the laparoscope tube body, and the transparent plate is an inclined elliptical plate, if there is no limiting groove, the distance between the front end of the driving rod and the edge of the transparent plate will change with the different positions of the driving rod, resulting in the repeated elongation and shortening of the pull rope, which is easy to lose elasticity.

[0011] Furthermore, a plurality of the limiting grooves are arranged in parallel on the inner wall of the outer cylinder, and a plurality of the limiting blocks are arranged equidistantly on the outer side of the driving rod.

[0012] Furthermore, it also includes a flushing device, which includes a pipeline plate and a telescopic drive mechanism, the bottom pads are two, the two bottom pads form a slideway for the pipeline plate to extend and retract, the end of the pipeline plate is connected to the telescopic drive mechanism, and the telescopic drive mechanism drives the pipeline plate to extend and retract along the slideway; a flushing pipeline is provided in the pipeline plate, one end of the flushing pipeline is connected to the nozzle located on the front upper surface of the pipeline plate, and the other end of the flushing pipeline is connected to a pipeline port located at the end of the pipeline plate, and the pipeline port is connected to a hydraulic pump through a hose, and the hydraulic pump pumps the flushing liquid into the flushing pipeline. When flushing is required, the telescopic drive mechanism drives the pipeline plate to be pushed forward, and at this time, the nozzle is located directly below the transparent plate, and the flushing liquid can be sprayed to the transparent plate to flush it.

[0013] Furthermore, the pipeline plate is provided with two flushing pipelines, and the flushing liquids connected to the two flushing pipelines are iodine tincture and physiological saline respectively.

[0014] Furthermore, a suction pipe is provided in the pipe plate, one end of which is connected to a confluence groove on the upper surface of the front end of the pipe plate, and the other end of which is connected to another pipe port at the end of the pipe plate, and the pipe port is connected to a negative pressure pump through a hose to absorb the sprayed flushing liquid.

[0015] Furthermore, the telescopic driving mechanism adopts an electromagnetic push rod.

[0016] Furthermore, it also includes a cleaning operation part, which includes a shell, a scrubbing button, a flushing button and a controller. The shell is fixedly connected to the end of the sleeve, and the scrubbing button and the flushing button are provided on the shell. The motor and the telescopic drive mechanism are both installed on the shell; the motor, the hydraulic pump, the negative pressure pump, the telescopic drive mechanism, the scrubbing button and the flushing button are all electrically connected to the controller.

[0017] The beneficial effects of a lens self-cleaning thyroid laparoscope of the present invention are as follows: by setting up a scrubbing device, during the use of the laparoscope, the driving rod, the pull rope and the scrubbing belt can be driven by a rotating drive mechanism to work together to automatically scrub the transparent plate up and down, and stains, blood stains and other objects that block the picture and affect the field of view on the transparent plate can be removed in time, ensuring that the field of view provided by the laparoscope during operations such as surgery is always clear, avoiding the trouble of frequently interrupting the operation to manually clean or replace the laparoscope due to blurred lens, effectively improving work efficiency, and also helping operations such as surgery to proceed more smoothly.

[0018] The flushing device can use the telescopic drive mechanism to push out the pipe plate when needed, so that the nozzle is directly below the transparent plate, and spray iodine tincture, saline and other flushing fluids onto the transparent plate for flushing, further enhancing the cleaning effect. A suction pipe is provided to absorb the sprayed flushing fluid in time to prevent the residual accumulation of the flushing fluid from affecting subsequent use, thereby fully ensuring the cleanliness of the transparent plate and the clarity of the field of view of the laparoscope lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a lens self-cleaning thyroid laparoscope of the present invention;

[0020] Figure 2 It is a structural schematic diagram of a cleaning device for a thyroid laparoscope with self-cleaning lens according to the present invention;

[0021] Figure 3 It is a structural schematic diagram of a sleeve of a lens self-cleaning thyroid laparoscope of the present invention;

[0022] Figure 4 It is a structural schematic diagram of a cleaning operation part of a lens self-cleaning thyroid laparoscope of the present invention;

[0023] Figure 5 It is a structural schematic diagram of a rotation driving mechanism of a lens self-cleaning thyroid laparoscope of the present invention;

[0024] Figure 6 It is a structural schematic diagram of a telescopic driving mechanism of a lens self-cleaning thyroid laparoscope of the present invention;

[0025] Figure 7This is a schematic structural diagram of a pipeline plate of a lens self-cleaning thyroid laparoscope according to the present invention;

[0026] Figure 8 The present invention is a schematic structural diagram of a driving rod of a thyroid laparoscope with a self-cleaning lens.

[0027] Among them, 1- laparoscope body, 2- sleeve, 21- transparent plate, 22- sliding groove, 23- inner cylinder, 24- cushion layer, 241- top cushion block, 242- bottom cushion block, 25- outer cylinder, 251- rotating groove, 252- first notch, 253- limiting groove, 254- second notch, 26- slideway, 3- scrubbing device, 31- rotating drive mechanism, 311- motor, 312- gear ring, 3121- avoidance groove, 313- gear, 32- driving rod, 321- plug rod, 322- limiting block, 33- pull rope, 34- scrubbing belt, 4- flushing device, 41- pipeline plate, 411- nozzle, 412- pipeline mouth, 413- confluence groove, 42- telescopic drive mechanism, 5- cleaning operation part, 51- shell, 511- pipeline interface, 52- scrubbing button, 53- flushing button. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] like Figure 1-8 As shown, the present invention is a lens self-cleaning thyroid laparoscope, comprising a laparoscope body 1, a sleeve 2 and a scrubbing device 3, wherein the sleeve 2 is sleeved on the laparoscope body 1, and a transparent plate 21 parallel to the lens of the laparoscope body is provided at the end of the sleeve; the scrubbing device 3 comprises a rotation driving mechanism 31, a driving rod 32, a pull rope 33 and a scrubbing belt 34, and arc-shaped sliding grooves 22 are provided on both sides of the sleeve 2; the cross section of the driving rod 32 is an arc-shaped, and the driving rod 32 passes through the sliding groove 22 and can rotate around the axis of the sleeve 2 in the sliding groove 22, and the front ends of the two driving rods 32 are respectively connected to the two ends of the scrubbing belt 34 through the pull rope 33, and the rotation driving mechanism 31 drives the two driving rods 32 to rotate along the sliding groove 22, and the two driving rods 32 move up and down at the same time as the sliding groove 22, and the driving rod 32 pulls the scrubbing belt 34 to scrub up and down close to the surface of the transparent plate 21 through the pull rope 33, and the pull rope 33 is elastic.

[0030] The material of the scrubbing belt 34 can be rubber, sponge or cloth. The scrubbing belt 34 scrubs and removes the blood stains on the surface of the transparent plate 21 that blocks the camera.

[0031] Furthermore, the sleeve 2 includes an inner cylinder 23, a cushion layer 24, and an outer cylinder 25. The inner cylinder 23 is sleeved on the cannula of the laparoscope body 1. The transparent plate 21 is arranged on the top of the inner cylinder 23. The inner cylinder 23 and the outer cylinder 25 are separated by a cushion layer 24. The cushion layer 24 is composed of a top cushion block 241 and a bottom cushion block 242. The gap between the top cushion block 241 and the bottom cushion block 242 is the sliding groove 22.

[0032] Further, the rotation drive mechanism 31 includes a motor 311, a gear ring 312 and a gear 313. The gear ring 312 is sleeved on the outer wall of the inner cylinder 23. The inner wall of the outer cylinder 25 is provided with two rotation grooves 251. The gear ring 312 is located in the rotation groove 251. There is a gap between the inner wall of the rotation groove 251 and the teeth of the outer wall of the gear ring 312. Both sides of the rotation groove 251 block both sides of the gear ring 312 to prevent the gear ring 312 from moving axially along the inner cylinder 23. There are two motors 311. The gears 313 are installed on the rotating shafts of the two motors 311. The two gears 313 are located on both sides of the outer cylinder 25. The first notches 252 are provided on both sides of the outer cylinder 25. The two gears 313 are respectively meshed with different gear rings 312 at the first notches 252.

[0033] A plug rod 321 is provided at the rear end of the driving rod 32 , and the two driving rods 32 are respectively connected to different gear rings 312 through the plug rod 321 . An avoidance groove 3121 is provided on the inner side of the gear ring 312 to avoid blocking the plug rod 321 connected to another gear ring 312 .

[0034] Furthermore, a limiting groove 253 is provided on the inner wall of the outer cylinder 25 at the sliding groove 22, and the plane where the limiting groove 253 is located is parallel to the transparent plate 21; a limiting block 322 is provided on the outer side of the driving rod 32, and the limiting block 322 is embedded in the limiting groove 253, and a through hole is provided on the gear ring 312, and the insertion rod 321 passes through the through hole on the gear ring 312, and the insertion rod 321 is slidably connected with the gear ring 312. The cross-section of the limiting groove 253 is a semicircle, and the limiting block 322 is in the shape of a hemisphere. The axial distance between each point on the axis of the limiting groove 253 and the edge line of the transparent plate 21 is equal everywhere. When the driving rod 32 is driven by the rotating driving mechanism 31 to rotate in the download test sliding groove 22, the limiting block 322 moves along the limiting groove 253, driving the driving rod 32 to move back and forth, and the distance between the front end of the driving rod 32 and the edge of the transparent plate 21 remains unchanged. Since the lens of the laparoscope tube body is inclined, the transparent plate 21 fits the lens of the laparoscope tube body, and the transparent plate 21 is an inclined elliptical plate. If there is no limiting groove 253, the distance between the front end of the driving rod 32 and the edge of the transparent plate 21 will change with the different positions of the driving rod 32, causing the pull rope 33 to be repeatedly stretched and shortened, and it is easy to lose its elasticity.

[0035] Furthermore, a plurality of the limiting grooves 253 are provided in parallel on the inner wall of the outer cylinder 25 , and a plurality of the limiting blocks 322 are provided at equal intervals on the outer side of the driving rod 32 .

[0036] Furthermore, it also includes a flushing device 4, which includes a pipeline plate 41 and a telescopic driving mechanism 42. There are two bottom pads 242, and the two bottom pads 242 form a slide 26 for the pipeline plate 41 to extend and retract. A second slot 254 is provided at the bottom of the outer cylinder 25. The end of the pipeline plate 41 is connected to the telescopic driving mechanism 42 through a connecting piece. The connecting piece passes through the second slot 254, and the telescopic driving mechanism 42 drives the pipeline plate 41 to extend and retract along the slide 26; a flushing pipeline is provided in the pipeline plate 41, one end of the flushing pipeline is connected to a nozzle 411 located on the front upper surface of the pipeline plate 41, and the other end of the flushing pipeline is connected to a pipeline port 412 located at the end of the pipeline plate 41, and the pipeline port 412 is connected to a hydraulic pump through a hose, and the hydraulic pump pumps the flushing liquid into the flushing pipeline. When flushing is required, the telescopic drive mechanism 42 drives the pipeline plate 41 to be pushed forward, and the operator holds the laparoscope body to adjust the angle. At this time, the nozzle 411 is located directly below the transparent plate 21, and the flushing liquid can be sprayed upward to the transparent plate 21 to flush it. The position for flushing the transparent plate 21 is opposite to the camera lens of the laparoscope.

[0037] Furthermore, the pipe plate 41 is provided with two flushing pipes, and the flushing liquids connected to the two flushing pipes are iodine tincture and saline solution respectively. The saline solution is used to flush and dissolve the dirt attached to the surface of the transparent plate 21, and the iodine tincture is used for disinfection. The two flushing pipes can alternately spray out the two flushing liquids.

[0038] Furthermore, a suction pipe is provided in the pipe plate 41, one end of which is connected to a confluence groove 413 located on the upper surface of the front end of the pipe plate 41, and the other end of which is connected to another pipe port 412 located at the end of the pipe plate 41, and the pipe port 412 is connected to a negative pressure pump through a hose, for absorbing the sprayed flushing liquid.

[0039] A filter is provided at the connection between the suction pipe and the confluence tank 413 to prevent large pieces of coagulated blood from clogging the suction pipe.

[0040] Furthermore, the telescopic driving mechanism 42 adopts an electromagnetic push rod.

[0041] Furthermore, it also includes a cleaning operation part 5, which includes a shell 51, a scrubbing button 52, a flushing button 53 and a controller. The shell 51 is fixedly connected to the end of the sleeve 2, and the scrubbing button 52 and the flushing button 53 are provided on the shell 51. The motor 311 and the telescopic driving mechanism 42 are both installed on the shell 51; the motor 311, the telescopic driving mechanism 42, the scrubbing button 52 and the flushing button 53 are all electrically connected to the controller.

[0042] The shell 51 covers the second slot 254 , and a pipe interface 511 is provided on the shell 51 . Each of the pipe ports 412 is connected to the pipe interface 511 on the shell 51 through a hose. The pipe interface 511 is provided with an electric-controlled valve, and the electric-controlled valve is electrically connected to the controller.

[0043] When in use, the sleeve 2 and the cleaning operation part 5 are put on the laparoscope body 1, and the pipes connecting the hydraulic pump and the negative pressure pump are connected to the pipe interface 511. The camera and the light of the laparoscope tube body can be used normally through the transparent plate 21. When the blood foam and grease attached to the transparent plate 21 block the shooting picture, the scrubbing button 52 and the flushing button 53 can be pressed. At this time, the controller controls the telescopic driving mechanism 42 to control the pipeline plate 41 to extend, and opens the electric control valve of the pipeline interface 511. The nozzle 411 sprays the flushing liquid to flush the surface of the transparent plate 21. The motor 311 starts, drives the two gear rings 312 to rotate synchronously in the opposite direction, and drives the two driving rods 32 to move up and down synchronously. The driving rod 32 pulls the scrubbing belt 34 through the pull rope 33 to move up and down close to the surface of the transparent plate 21 for scrubbing. The dripping flushing liquid falls on the confluence groove 413 and is sucked out of the surgical patient by the suction pipe.

[0044] The beneficial effects of a lens self-cleaning thyroid laparoscope of the present invention are as follows: by setting up a scrubbing device, during the use of the laparoscope, the driving rod, the pull rope and the scrubbing belt can be driven by a rotating drive mechanism to work together to automatically scrub the transparent plate up and down, and stains, blood stains and other objects that block the picture and affect the field of view on the transparent plate can be removed in time, ensuring that the field of view provided by the laparoscope during operations such as surgery is always clear, avoiding the trouble of frequently interrupting the operation to manually clean or replace the laparoscope due to blurred lens, effectively improving work efficiency, and also helping operations such as surgery to proceed more smoothly.

[0045] The flushing device can use the telescopic drive mechanism to push out the pipe plate when needed, so that the nozzle is directly below the transparent plate, and spray iodine tincture, saline and other flushing fluids onto the transparent plate for flushing, further enhancing the cleaning effect. A suction pipe is provided to absorb the sprayed flushing fluid in time to prevent the residual accumulation of the flushing fluid from affecting subsequent use, thereby fully ensuring the cleanliness of the transparent plate and the clarity of the field of view of the laparoscope lens.

[0046] The present invention and its embodiments are described above, which is not restrictive. What is shown in the accompanying drawings is only one of the embodiments of the present invention, and the actual content is not limited to this. In short, if ordinary technicians in this field are inspired by it and do not deviate from the purpose of the invention, they can creatively design structural methods and embodiments similar to the technical scheme, which should all fall within the scope of protection of the present invention.

Claims

1. A self-cleaning thyroid laparoscope, characterized in that: The invention comprises a laparoscope body (1), a sleeve (2) and a scrubbing device (3), wherein the sleeve (2) is sleeved on the laparoscope tube body of the laparoscope body (1), and a transparent plate (21) parallel to the lens of the laparoscope tube body is provided at the end of the sleeve; the scrubbing device (3) comprises a rotating drive mechanism (31), a drive rod (32), a pull rope (33) and a scrubbing belt (34), and arc-shaped sliding grooves (22) are provided on both sides of the sleeve (2); the cross section of the drive rod (32) is arc-shaped and passes through the sliding groove ( 22), the front ends of the two driving rods (32) are respectively connected to the two ends of the scrubbing belt (34) through the pull rope (33), the lens surface of the laparoscope tube body is inclined, the rotating driving mechanism (31) drives the two driving rods (32) to rotate along the sliding groove (22) around the axis of the sleeve (2), and move up and down along the sliding groove (22), and the scrubbing belt (34) can be pulled by the pull rope (33) to scrub up and down close to the surface of the transparent plate (21), and the pull rope (33) is elastic; The rotation drive mechanism (31) comprises a motor (311), a gear ring (312) and a gear (313); the gear ring (312) is sleeved on the outer wall of the inner cylinder (23) of the sleeve (2); the inner wall of the outer cylinder (25) of the sleeve (2) is provided with two rotation grooves (251); the gear ring (312) is located in the rotation grooves (251); there is a gap between the teeth of the inner wall of the rotation groove (251) and the outer wall of the gear ring (312); the rotation groove (251) blocks the rotation groove (251) from rotating. The gear ring (312) prevents the gear ring (312) from moving axially along the inner cylinder (23); there are two motors (311), and the gears (313) are installed on the rotating shafts of the two motors (311); the two gears (313) are located on both sides of the outer cylinder (25), and first notches (252) are provided on both sides of the outer cylinder (25); the two gears (313) are respectively meshed with different gear rings (312) at the first notches (252); A plug rod (321) is provided at the rear end of the driving rod (32), and the two driving rods (32) are respectively connected to different gear rings (312) through the plug rod (321). An avoidance groove (3121) is provided on the inner side of the gear ring (312) to avoid blocking the plug rod (321) connected to another gear ring (312).

2. The self-cleaning thyroid laparoscope according to claim 1, characterized in that: The sleeve (2) comprises an inner cylinder (23), a cushion layer (24), and an outer cylinder (25); the inner cylinder (23) is sleeved on the cannula of the laparoscope body (1); the transparent plate (21) is arranged on the top of the inner cylinder (23); the inner cylinder (23) and the outer cylinder (25) are separated by a cushion layer (24); the cushion layer (24) is composed of a top cushion block (241) and a bottom cushion block (242); and the gap between the top cushion block (241) and the bottom cushion block (242) is the sliding groove (22).

3. The self-cleaning thyroid laparoscope according to claim 2, characterized in that: A limiting groove (253) is provided on the inner wall of the outer cylinder (25) at the sliding groove (22), and the plane where the limiting groove (253) is located is parallel to the transparent plate (21); a limiting block (322) is provided on the outer side of the driving rod (32), and the limiting block (322) is embedded in the limiting groove (253); a through hole is provided on the gear ring (312), and the insertion rod (321) passes through the through hole on the gear ring (312), and the insertion rod (321) is slidably connected with the gear ring (312).

4. The self-cleaning thyroid laparoscope according to claim 3, characterized in that: The inner wall of the outer cylinder (25) is provided with a plurality of limit grooves (253) in parallel, and the outer side of the driving rod (32) is provided with a plurality of limit blocks (322) at equal intervals.

5. The self-cleaning thyroid laparoscope according to claim 2, characterized in that: The invention also comprises a flushing device (4), the flushing device (4) comprising a pipeline plate (41) and a telescopic drive mechanism (42), the bottom pads (242) being two, the two bottom pads (242) forming a slideway (26) for the pipeline plate (41) to extend and retract, the end of the pipeline plate (41) being connected to the telescopic drive mechanism (42), the telescopic drive mechanism (42) driving the pipeline plate (41) to extend and retract along the slideway (26); a flushing pipeline is provided in the pipeline plate (41), one end of the flushing pipeline is connected to a nozzle (411) located on the upper surface of the front end of the pipeline plate (41), and the other end of the flushing pipeline is connected to a pipeline port (412) located at the end of the pipeline plate (41), the pipeline port (412) is connected to a hydraulic pump through a hose, and the hydraulic pump pumps flushing liquid into the flushing pipeline.

6. The self-cleaning thyroid laparoscope according to claim 5, characterized in that: The pipeline plate (41) is provided with two flushing pipelines.

7. The self-cleaning thyroid laparoscope according to claim 5, characterized in that: A suction pipe is provided in the pipe plate (41), one end of the suction pipe is connected to a confluence groove (413) located on the upper surface of the front end of the pipe plate (41), and the other end of the suction pipe is connected to another pipe port (412) located at the end of the pipe plate (41), and the pipe port (412) is connected to a negative pressure pump via a hose.

8. The self-cleaning thyroid laparoscope according to claim 5, characterized in that: The telescopic driving mechanism (42) adopts an electromagnetic push rod.

9. The self-cleaning thyroid laparoscope according to claim 7, characterized in that: The invention also comprises a cleaning operation part (5), the cleaning operation part (5) comprising a housing (51), a scrubbing button (52), a flushing button (53) and a controller, the housing (51) being fixedly connected to the end of the sleeve (2), the housing (51) being provided with the scrubbing button (52) and the flushing button (53), the motor (311) and the telescopic driving mechanism (42) being both mounted on the housing (51); the motor (311), the telescopic driving mechanism (42), the scrubbing button (52) and the flushing button (53) being both electrically connected to the controller.

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