Dilator

Abstract

The application relates to the technical field of medical devices, in particular to an anal dilator which comprises a top plate, a dilating mechanism is installed at the bottom of the top plate, the dilating mechanism comprises sliding grooves which are arranged at the bottom of the top plate, four sliding grooves are arranged, the four sliding grooves are arranged in perpendicular intersection, first threaded cylinders are slidably installed in the interiors of the four sliding grooves, first threaded rods are threadedly installed in the interiors of the first threaded cylinders, the first threaded rods are hollow, second threaded rods are threadedly installed in the interiors of the first threaded rods, a lubricating box is rotatably installed on the surface of the first threaded rod, the first threaded rod penetrates into the interior of the lubricating box, and a piston is slidably installed in the interior of the lubricating box. When medical staff dilate the anus, the squeezed lubricating liquid will be expanded from the bottom of the lubricating box into the interior of the dilating plate, the skin around the patient is lubricated, and the resistance of the dilating plate to the anus is reduced.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to anal dilators. Background Technology

[0002] Rectal cancer refers to cancer located between the dentate line and the rectosigmoid junction. It is one of the most common malignant tumors of the digestive tract. Due to its low location, rectal cancer is easily diagnosed through digital rectal examination and sigmoidoscopy. Currently, surgical treatments for rectal cancer are broadly divided into two categories: anal-preserving surgery and non-anal-preserving surgery. Anal-preserving surgery, also known as palliative surgery, is combined with other therapies to alleviate patient suffering and relieve rectal obstruction. Non-anal-preserving surgery, also known as radical surgery, involves removing the diseased cancerous tissue. Generally, this results in a larger wound and greater harm to the patient.

[0003] After rectal cancer surgery with preservation of the anus, patients often experience difficulty defecating due to anastomotic stenosis. This necessitates the use of an anal dilator to periodically dilate the anastomosis. However, existing anal dilators require the doctor to first insert their fingers into the patient's anus, then forcefully open the anus with both hands before inserting the dilator. Due to the difficulty in controlling the force, excessive force may be applied momentarily, damaging the patient's anal sphincter and causing significant pain. Furthermore, the dilation cannot be precisely controlled, resulting in poor dilation effects. Summary of the Invention

[0004] To overcome the above deficiencies, the present invention provides an anal dilator that overcomes or at least partially solves the above-mentioned technical problems.

[0005] This invention is implemented as follows: This invention provides an anal dilator, including a top plate, and an anal dilator mechanism is installed at the bottom of the top plate, the anal dilator mechanism comprising: The sliding groove is located at the bottom of the top plate. There are four sliding grooves, which are arranged perpendicularly to each other. A first threaded cylinder is slidably installed inside each of the four sliding grooves. A first threaded rod is threadedly installed inside a first threaded cylinder. The first threaded rod is hollow, and a second threaded rod is threadedly installed inside the first threaded rod. A lubrication box is rotatably mounted on the surface of a first threaded rod, which extends into the interior of the lubrication box. A piston is slidably mounted inside the lubrication box and is fixedly connected to a second threaded rod.

[0006] In one embodiment of the present invention, a dilator plate is fixedly installed on the side of the lubrication box, and a through hole is provided between the dilator plate and the lubrication box. Multiple through holes are provided. An extrusion hole is provided on the surface of the dilator plate. Multiple extrusion holes are provided. The dilator plate is made of elastic material. The interior of the dilator plate is hollow. A conical plate is fixedly installed at the bottom of the dilator plate.

[0007] In one embodiment of the present invention, a power mechanism is installed on the top of the top plate. The power mechanism includes a handguard, which is fixedly installed on the top of the top plate. A telescopic motor is fixedly installed inside the handguard, and the output end of the telescopic motor extends through to the bottom of the top plate and is slidably connected to the top plate.

[0008] In one embodiment of the present invention, an installation plate is fixedly installed at the output end of the telescopic motor, a stepper motor is fixedly installed at the bottom of the installation plate, a clamping plate is fixedly installed on the output shaft surface of the stepper motor, a main cylinder is slidably installed inside the clamping plate, a telescopic plate is fixedly installed at the top of the main cylinder, and the main cylinder is fixedly connected to the lubrication box through the telescopic plate.

[0009] In one embodiment of the present invention, the stepper motor extends through the interior of the main cylinder and is rotatably connected to the main cylinder. A rotating shaft is fixedly installed at the end of the stepper motor, and a first bevel gear is fixedly installed at the end of the rotating shaft. An installation block is fixedly installed on the inner wall of the main cylinder. Four installation blocks are provided, and a second threaded cylinder is rotatably installed inside each of the four installation blocks.

[0010] In one embodiment of the present invention, the second threaded cylinder extends through to the outside of the main cylinder and is rotatably connected to the main cylinder. A third threaded rod is installed on the internal thread of the second threaded cylinder. A second bevel gear is fixedly installed at the end of the second threaded cylinder. The second bevel gear meshes with a first bevel gear. The end of the third threaded rod is fixedly connected to the lubrication box.

[0011] In one embodiment of the present invention, an intelligent control mechanism is installed on the top of the top plate. The intelligent control mechanism includes a start button, which is fixedly installed on the top of the handguard. A display screen is provided on the top of the top plate, and control buttons are fixedly installed on both sides of the display screen.

[0012] In one embodiment of the present invention, a fixing plate is fixedly installed inside the main cylinder, a battery compartment is fixedly installed at the bottom of the fixing plate, a PLC board is fixedly installed at the bottom of the battery compartment, and the battery compartment and the PLC board are connected by wires.

[0013] In one embodiment of the present invention, an installation cylinder is fixedly installed at the bottom of the main cylinder, a camera is fixedly installed at the bottom of the installation cylinder, and lighting lamps are arranged around the camera, with multiple lighting lamps provided.

[0014] In one embodiment of the present invention, an elastic plate is slidably installed between the anal dilators, a metal plate is fixedly installed on the side of the elastic plate, an arc-shaped plate is slidably installed between the lubrication boxes, and a pressure sensor is fixedly installed on the side of the arc-shaped plate.

[0015] The anal dilator provided by this invention has the following beneficial effects: 1. Through the design of the anal dilation mechanism, with the lubrication box and dilation plate in place, when medical personnel perform anal dilation, the dilation plate slowly slides into the anus. The muscles around the patient's anus squeeze the dilation plate. Due to the hollow rubber design of the dilation plate, the squeezing force generated by the muscles compresses the dilation plate. As the dilation plate slowly slides into the anus, the piston inside the lubrication box squeezes the lubricating fluid inside the lubrication box. The squeezed lubricating fluid first flows from the bottom of the lubrication box into the inside of the dilation plate, lubricating the skin around the patient, reducing the resistance of the dilation plate entering the anus, and reducing the pain caused by anal dilation.

[0016] 2. Through the setting of the power mechanism, the dilation action of the entire anal dilator can be controlled by the motor and the electric telescopic rod. The electric telescopic rod is used to control the movement of the dilator plate into the anus, while the motor can control the degree of dilation of the dilator plate through the setting of the first bevel gear and the second bevel gear, thereby achieving quantitative dilation of the anus.

[0017] 3. Through the intelligent control mechanism, intelligent control of the motor, electric telescopic rod, and camera can be achieved. The display screen on the top of the top plate can detect the internal situation captured by the camera inside the anus in real time. The motor and electric telescopic rod can also be controlled through the control buttons, thus meeting the need for visualization. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure provided by an embodiment of the present invention; Figure 2 A schematic diagram of the overall bottom view structure provided for an embodiment of the present invention; Figure 3 A schematic diagram of the front cross-sectional structure of the main tube provided for an embodiment of the present invention; Figure 4 A schematic diagram of the internal structure of the anal dilator provided for an embodiment of the present invention; Figure 5 A schematic diagram of the bottom structure of the main cylinder provided for an embodiment of the present invention; Figure 6 A schematic diagram of the internal structure of the hand guard provided for an embodiment of the present invention; Figure 7 Provided for the embodiments of the present invention Figure 3 Enlarged structural diagram of section A in the middle; Figure 8 Provided for the embodiments of the present invention Figure 5 Enlarged structural diagram of section B.

[0020] In the diagram: 1. Top plate; 2. Anal dilation mechanism; 201. Sliding groove; 202. First threaded cylinder; 203. First threaded rod; 204. Second threaded rod; 205. Lubrication box; 206. Piston; 207. Anal dilation plate; 208. Through hole; 209. Extrusion hole; 210. Conical plate; 3. Power mechanism; 301. Hand guard; 302. Telescopic motor; 303. Mounting plate; 304. Stepper motor; 305. Clamping plate; 306. Main cylinder; 307. Telescopic plate; 308. Rotation. Shaft; 309, First bevel gear; 310, Mounting block; 311, Second threaded cylinder; 312, Third threaded rod; 313, Second bevel gear; 4, Intelligent control mechanism; 401, Start button; 402, Display screen; 403, Control button; 404, Fixing plate; 405, Battery compartment; 406, PLC board; 407, Mounting cylinder; 408, Camera; 409, Lighting lamp; 410, Elastic plate; 411, Metal plate; 412, Arc plate; 413, Pressure sensor. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Reference Figures 1-8This technical solution provides an anal dilator, specifically including a top plate 1. An anal dilator mechanism 2 is installed at the bottom of the top plate 1. The anal dilator mechanism 2 includes a sliding groove 201, a first threaded rod 203, and a lubrication box 205. The sliding groove 201 is located at the bottom of the top plate 1, and four sliding grooves 201 are provided, arranged perpendicularly. A first threaded cylinder 202 is slidably installed inside each of the four sliding grooves 201. The first threaded rod 203 is threadedly installed inside the first threaded cylinder 202. When the first threaded cylinder 202 moves up and down, the first threaded rod 203 will rotate inside the first threaded cylinder 202. Furthermore, the arrangement of the four sliding grooves 201 allows the distance between the four first threaded cylinders 202 to be changed. The threaded rod 203 is hollow, and its interior is also threaded. A second threaded rod 204 is threadedly mounted inside the first threaded rod 203. Therefore, when the first threaded rod 203 rotates inside the first threaded cylinder 202, the second threaded rod 204 will move up and down inside the first threaded rod 203. A lubrication box 205 is rotatably mounted on the surface of the first threaded rod 203. The lubrication box 205 is filled with a solid lubricant made of a harmless material and is easy to clean. The first threaded rod 203 extends into the lubrication box 205. A piston 206 is slidably mounted inside the lubrication box 205. The piston 206 is fixedly connected to the second threaded rod 204. When the second threaded rod 204 rotates inside the first threaded cylinder 202, the second threaded rod 204 moves up and down inside the first threaded rod 203. When the threaded rod 204 moves up and down inside the first threaded rod 203, it can drive the piston 206 to move inside the lubrication box 205. A dilator plate 207 is fixedly installed on the side of the lubrication box 205. The interior of the dilator plate 207 is hollow. A through hole 208 is opened between the dilator plate 207 and the lubrication box 205. Multiple through holes 208 are provided. The lubricant inside the lubrication box 205 first comes out from the through hole 208 at the bottom of the lubrication box 205 under the action of the piston 206 and enters the cavity of the dilator plate 207. An extrusion hole 209 is opened on the surface of the dilator plate 207. Multiple extrusion holes 209 are provided. The dilator plate 207 is made of elastic material. A conical plate 21 is fixedly installed at the bottom of the dilator plate 207. When medical personnel insert the conical plate 210 into the patient's anus, the muscles around the anus will exert pressure on the dilator plate 207. According to the order of insertion, the anus will first exert pressure on the bottom of the dilator plate 207. At this time, the lubricant at the bottom of the lubrication box 205 enters the dilator plate 207. Therefore, under the action of the lubricant at the bottom of the dilator plate 207, the pressure applied to the dilator plate 207 will squeeze out the lubricant inside, thus lubricating the area between the anus and the dilator plate 207, reducing the patient's pain. This design also reduces lubricant waste; when the pressure on the dilator plate 207 decreases, the amount of lubricant discharged also decreases.When the anal dilator 207 is not under pressure from the anus, the lubricant will not be released for lubrication. This allows for control of the amount of lubricant used based on specific working conditions, preventing excessive or insufficient use and thus avoiding waste.

[0023] Reference Figures 1-8Based on the same concept as Embodiment 1 above, this embodiment also proposes that a power mechanism 3 is installed on the top of the top plate 1. The power mechanism 3 includes a handguard 301, which is fixedly installed on the top of the top plate 1. A telescopic motor 302 is fixedly installed inside the handguard 301. The output end of the telescopic motor 302 extends through to the bottom of the top plate 1 and is slidably connected to the top plate 1. A mounting plate 303 is fixedly installed on the output end of the telescopic motor 302. A stepper motor 304 is fixedly installed on the bottom of the mounting plate 303. A clamping plate 305 is fixedly installed on the surface of the output shaft of the stepper motor 304. A main cylinder 306 is slidably installed inside the clamping plate 305. When the telescopic motor 302 is started, the telescopic motor 302 can drive the mounting plate 303 to move up and down. Driven by the vertically moving mounting plate 303, the stepper motor 304 moves vertically. The stepper motor 304, in turn, drives the clamping plate 305 to rotate. A telescopic plate 307 is fixedly mounted on the top of the main cylinder 306. The main cylinder 306 is fixedly connected to the lubrication box 205 via the telescopic plate 307. When the lubrication box 205 expands outward, the telescopic plate 307 extends and retracts. Driven by the clamping plate 305, the entire main cylinder 306 moves vertically. This vertical movement of the main cylinder 306 drives the telescopic plate 307 to move vertically, which in turn drives the lubrication box 205 to move vertically, which in turn drives the first threaded cylinder 202 to move vertically, thus driving the second threaded cylinder 202 to move vertically. A threaded rod 203 rotates. A stepper motor 304 passes through the interior of the main cylinder 306 and is rotatably connected to the main cylinder 306. A rotating shaft 308 is fixedly installed at the end of the stepper motor 304, and a first bevel gear 309 is fixedly installed at the end of the rotating shaft 308. The stepper motor 304 can drive the rotating shaft 308 to rotate, and the rotating shaft 308 can drive the first bevel gear 309 to rotate. Four mounting blocks 310 are fixedly installed on the inner wall of the main cylinder 306. A second threaded cylinder 311 is rotatably installed inside each of the four mounting blocks 310. The second threaded cylinder 311 passes through the exterior of the main cylinder 306 and is rotatably connected to the main cylinder 306. A third threaded rod 31 is threadedly installed inside the second threaded cylinder 311. 2. A second bevel gear 313 is fixedly installed at the end of the second threaded cylinder 311. The second bevel gear 313 meshes with the first bevel gear 309. When the first bevel gear 309 rotates, it drives the second bevel gear 313 to rotate. The rotating second bevel gear 313 drives the second threaded cylinder 311 to rotate inside the mounting block 310. The rotating second threaded cylinder 311 causes the third threaded rod 312 to move left and right. The end of the third threaded rod 312 is fixedly connected to the lubrication box 205. The left and right movement of the third threaded rod 312 can cause the lubrication box 205 to move away from the main cylinder 306. Therefore, when medical personnel need to insert the anal dilator into the anus, the telescopic motor 302 will be activated.The telescopic motor 302 can drive the main cylinder 306, lubrication box 205, and anal dilator 207 to move together, allowing the anal dilator 207 to slowly enter the anus. To dilate the anus, the stepper motor 304 can be activated. The stepper motor 304 drives the rotating shaft 308 to rotate, which in turn drives the first bevel gear 309. The first bevel gear 309 then drives the second bevel gear 313, which in turn drives the second threaded cylinder 311. The second threaded cylinder 311 then drives the third threaded rod 312 to move away from the second threaded cylinder 311. The movement of the third threaded rod 312 causes the lubrication box 205 and anal dilator 207 to move away from the main cylinder 306, thus achieving anal dilation.

[0024] Reference Figures 1-8Based on the same concept as Embodiment 1 above, this embodiment also proposes that an intelligent control mechanism 4 be installed on the top of the top plate 1. The intelligent control mechanism 4 includes a start button 401, which is fixedly installed on the top of the handguard 301. The start button 401 is used to control the switch of the entire intelligent control mechanism 4 and the power switch. A display screen 402 is provided on the top of the top plate 1. Control buttons 403 are fixedly installed on both sides of the display screen 402. Through the setting of the control buttons 403 and the display screen 402, the control buttons 403 can control the telescopic motor 302 and the stepper motor 304, and can control the rotation speed of the stepper motor 304 and the telescopic length of the telescopic motor 302. The system controls the movement and calculates the expansion diameter of the anal dilator 207 by measuring the rotation speed and time of the stepper motor 304, displaying the result on the display screen 402. It can also display the extension distance of the telescopic motor 302 on the display screen 402, enabling visual operation and allowing medical personnel to perform anal dilation operations more precisely. A fixing plate 404 is fixedly installed inside the main cylinder 306, and a battery compartment 405 is fixedly installed at the bottom of the fixing plate 404. The battery compartment 405 contains a battery that provides power to the entire power mechanism 3 and intelligent control mechanism 4. A PLC board 406 is fixedly installed at the bottom of the battery compartment 405, and the battery compartment 405 and the PLC board 406 are connected via... The main cylinder 306 is connected by wires, and a mounting cylinder 407 is fixedly installed at the bottom of the main cylinder 306. A camera 408 is fixedly installed at the bottom of the mounting cylinder 407. The PLC board 406 can control the camera 408 and the lighting 409 through the control button 403. The camera 408 can transmit the situation inside the anus to the display screen 402, allowing medical staff to observe the situation inside the anus and thus better treat the patient. Multiple lighting 409s are arranged around the camera 408 to provide illumination for the camera 408. Elastic plates 410 are slidably installed between the anal dilators 207. As the anal dilators 207 expand, the elastic plates 410... The elastic plate 410 will display more information. A metal plate 411 is fixedly installed on the side of the elastic plate 410. An arc-shaped plate 412 is slidably installed between the lubrication boxes 205. A pressure sensor 413 is fixedly installed on the side of the arc-shaped plate 412. When the muscles around the anus exert pressure on the anal dilator 207, the pressure will also act on the elastic plate 410. At this time, the elastic plate 410 will bend. The bending elastic plate 410 will drive the metal plate 411 to move, so that the metal plate 411 will squeeze the pressure sensor 413. The pressure sensor 413 will feed back the pressure generated by the metal plate 411 to the display screen 402, so that medical personnel can observe the pressure inside the anus in real time.

[0025] Specifically, the working process or principle of this anal dilator is as follows: First, medical personnel insert the conical plate 210 into the anus, then activate the telescopic motor 302. The telescopic motor 302 drives the mounting plate 303 to move up and down. Driven by the moving mounting plate 303, the stepper motor 304 moves up and down. Driven by the stepper motor 304, the clamping plate 305 rotates. The stepper motor 304 drives the rotating shaft 308 to rotate. The rotating shaft 308 drives the first bevel gear 309 to rotate. 09 can drive the second bevel gear 313 to rotate. The rotating second bevel gear 313 can drive the second threaded cylinder 311 to rotate inside the mounting block 310. The rotating second threaded cylinder 311 can cause the third threaded rod 312 to move left and right. The left and right movement of the third threaded rod 312 can cause the lubrication box 205 to move away from the main cylinder 306. When the lubrication box 205 expands outward, it can drive the telescopic plate 307 to extend and retract. Under the drive of the clamping plate 305, it can drive the entire main cylinder 306 to move up and down, thereby realizing the insertion and expansion of the entire anal dilator.

[0026] When the first threaded cylinder 202 moves up and down, the first threaded rod 203 will rotate inside the first threaded cylinder 202. When the first threaded rod 203 rotates inside the first threaded cylinder 202, the second threaded rod 204 will move up and down inside the first threaded rod 203. When the second threaded rod 204 moves up and down inside the first threaded rod 203, it can drive the piston 206 to move inside the lubrication box 205. The piston movement of the piston 206 inside the lubrication box 205 can squeeze the lubricant inside the lubrication box 205 into the anal dilator 207. When the medical staff inserts the conical plate 210 into the patient's anus, the muscles around the anus will generate pressure on the anal dilator 207. The pressure applied to the anal dilator 207 will squeeze out the lubricant inside the anal dilator 207, thereby lubricating the anus and the anal dilator 207.

[0027] When the muscles around the anus exert pressure on the anal dilator 207, the pressure also acts on the elastic plate 410, causing the elastic plate 410 to bend. This bending of the elastic plate 410 moves the metal plate 411, causing it to press against the pressure sensor 413. The pressure sensor 413 transmits the pressure generated by the metal plate 411 to the display screen 402. The camera 408 can then transmit the internal anal condition to the display screen 402, allowing medical personnel to observe the internal anal area. The lighting 409 provides illumination for the camera 408. 08 provides lighting. The start button 401 is the switch for controlling the entire intelligent control mechanism 4 and the power switch. The control button 403 can control the telescopic motor 302 and the stepper motor 304. It can control the rotation speed of the stepper motor 304 and the telescopic length of the telescopic motor 302. It can also calculate the expansion diameter of the anal dilator 207 by measuring the rotation speed and rotation time of the stepper motor 304 and display it on the display screen 402. It can also display the telescopic distance of the telescopic motor 302 on the display screen 402 to achieve visual operation.

[0028] It should be noted that the telescopic motor 302, the stepper motor 304 and the pressure sensor 413 are existing devices or equipment, or devices or equipment that can be implemented by existing technology. Their power supply, specific composition and principle are clear to those skilled in the art, so they will not be described in detail.

Claims

1. Anal dilator, comprising a top plate (1), characterized in that, A dilation mechanism (2) is installed at the bottom of the top plate (1), the dilation mechanism (2) comprising: Sliding groove (201), the sliding groove (201) is opened at the bottom of the top plate (1), the sliding groove (201) is provided in four ways, the four sliding grooves (201) are arranged perpendicularly and intersecting each other, and a first threaded cylinder (202) is slidably installed inside each of the four sliding grooves (201). The first threaded rod (203) is threadedly installed inside the first threaded cylinder (202). The first threaded rod (203) is hollow. The second threaded rod (204) is threadedly installed inside the first threaded rod (203). A lubrication box (205) is rotatably mounted on the surface of a first threaded rod (203), the first threaded rod (203) extending into the interior of the lubrication box (205), and a piston (206) is slidably mounted inside the lubrication box (205), the piston (206) being fixedly connected to a second threaded rod (204); A dilator plate (207) is fixedly installed on the side of the lubrication box (205). A through hole (208) is provided between the dilator plate (207) and the lubrication box (205). Multiple through holes (208) are provided. An extrusion hole (209) is provided on the surface of the dilator plate (207). Multiple extrusion holes (209) are provided. The dilator plate (207) is made of elastic material. The interior of the dilator plate (207) is hollow. A conical plate (210) is fixedly installed at the bottom of the dilator plate (207). A power mechanism (3) is installed on the top of the top plate (1). The power mechanism (3) includes a hand guard (301). The hand guard (301) is fixedly installed on the top of the top plate (1). A telescopic motor (302) is fixedly installed inside the hand guard (301). The output end of the telescopic motor (302) extends through to the bottom of the top plate (1) and is slidably connected to the top plate (1). The output end of the telescopic motor (302) is fixedly mounted with an mounting plate (303), the bottom of the mounting plate (303) is fixedly mounted with a stepper motor (304), the output end surface of the stepper motor (304) is fixedly mounted with a clamping plate (305), the inside of the clamping plate (305) is slidably mounted with a main cylinder (306), the top of the main cylinder (306) is fixedly mounted with a telescopic plate (307), and the main cylinder (306) is fixedly connected to the lubrication box (205) through the telescopic plate (307). The stepper motor (304) extends through the interior of the main cylinder (306) and is rotatably connected to the main cylinder (306). A rotating shaft (308) is fixedly installed at the end of the stepper motor (304), and a first bevel gear (309) is fixedly installed at the end of the rotating shaft (308). An installation block (310) is fixedly installed on the inner wall of the main cylinder (306). Four installation blocks (310) are provided, and a second threaded cylinder (311) is rotatably installed inside each of the four installation blocks (310). The second threaded cylinder (311) extends through to the outside of the main cylinder (306) and is rotatably connected to the main cylinder (306). The internal threads of the second threaded cylinder (311) are fitted with a third threaded rod (312). The end of the second threaded cylinder (311) is fixedly fitted with a second bevel gear (313). The second bevel gear (313) meshes with the first bevel gear (309). The end of the third threaded rod (312) is fixedly connected to the lubrication box (205).

2. The anal dilator according to claim 1, characterized in that, The top of the top plate (1) is equipped with an intelligent control mechanism (4), which includes a start button (401). The start button (401) is fixedly installed on the top of the handguard (301). The top of the top plate (1) is provided with a display screen (402), and control buttons (403) are fixedly installed on both sides of the display screen (402).

3. The anal dilator according to claim 2, characterized in that, A fixing plate (404) is fixedly installed inside the main cylinder (306). A battery compartment (405) is fixedly installed at the bottom of the fixing plate (404). A PLC board (406) is fixedly installed at the bottom of the battery compartment (405). The battery compartment (405) and the PLC board (406) are connected by wires.

4. The anal dilator according to claim 3, characterized in that, An installation cylinder (407) is fixedly installed at the bottom of the main cylinder (306), and a camera (408) is fixedly installed at the bottom of the installation cylinder (407). Lighting lamps (409) are arranged around the camera (408), and multiple lighting lamps (409) are provided.

5. The anal dilator according to claim 4, characterized in that, An elastic plate (410) is slidably installed between the anal dilators (207), and a metal plate (411) is fixedly installed on the side of the elastic plate (410). An arc-shaped plate (412) is slidably installed between the lubrication boxes (205), and a pressure sensor (413) is fixedly installed on the side of the arc-shaped plate (412).

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