Urethral dilator for urinary surgery and control method thereof

Abstract

The invention discloses a urethral dilator for urinary surgery and a control method thereof, and relates to the technical field of dilators, the urethral dilator comprises a holding cylinder, a dilation mechanism is arranged in the holding cylinder, the dilation mechanism comprises a telescopic assembly and a water injection assembly, the telescopic assembly comprises a replacement part, and the replacement part comprises a top ball body, a top ball body and a bottom ball body; an elastic expansion sleeve is arranged on the surface of one side of the top ball body, the telescopic assembly further comprises a small motor, the small motor is arranged at the end of the holding barrel body, a threaded rod is arranged at the output end of the small motor, and a meshing plate is meshed with the surface of the threaded rod; according to the urinary surgery urethral dilator, by arranging the dilation mechanism and through cooperation of the telescopic assembly, the water injection assembly and the lubricating assembly, high efficiency and comfort of urethral dilation are achieved, and the quality of urinary surgery and patient experience are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of dilators, in particular to a urethral dilator for urological surgery and a control method thereof. Background Art

[0002] Urethral dilators play a vital role in urological surgery. They are key medical devices used to treat diseases such as urethral stenosis, urethral stones and prostatic hypertrophy. Traditional urethral dilators are relatively simple in design and mainly consist of dilation rods made of metal or plastic. Doctors manually insert the dilation rod into the patient's urethra to achieve the purpose of urethral dilation. However, with the continuous advancement of medical technology and the increasing needs of patients, the limitations of traditional urethral dilators have gradually become apparent.

[0003] In traditional urological surgery, urethral dilators mainly rely on simple mechanical dilation principles, and dilate the urethra by directly inserting rigid dilating components. However, this traditional dilation method has many shortcomings. First, when the rigid dilating components are inserted into and pulled out of the urethra, they can easily cause friction and damage to the urethral wall, causing pain and discomfort to the patient, and may even cause complications such as urethral infection. Secondly, traditional urethral dilators lack precise control during the dilation process, and it is difficult to perform personalized dilation treatment according to the patient's specific situation, thus affecting the surgical effect and the patient's recovery. Summary of the invention

[0004] The object of the present invention is to provide a urethral dilator for urological surgery and a control method thereof to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a urethral dilator for urological surgery and a control method thereof, comprising:

[0006] A holding cylinder, wherein an expansion mechanism is arranged inside the holding cylinder, wherein the expansion mechanism comprises a telescopic assembly and a water injection assembly, wherein the telescopic assembly comprises a replacement component, wherein the replacement component comprises: a top sphere, wherein an elastic expansion sleeve is arranged on one side surface of the top sphere, wherein a mounting collar is arranged on one end of the elastic expansion sleeve away from the top sphere;

[0007] The telescopic assembly further comprises: a small motor, the small motor is arranged at one end of the holding cylinder, a threaded rod is arranged on the output end of the small motor, a meshing plate is meshed on the surface of the threaded rod, a movable disc is arranged on the bottom surface of the meshing plate, an inner support rod is arranged on one side surface of the movable disc, a mounting top plate is arranged on one end of the inner support rod, an interface for fixing with the top ball is arranged on one side surface of the mounting top plate, and an interface for fixing with the mounting collar is also arranged on one end of the holding cylinder;

[0008] The water injection assembly includes: a water inlet plate and a water outlet plate, both of which are arranged on the inner bottom surface of the holding cylinder body. One-way valves are provided at the centers of the water inlet plate and the water outlet plate. The water inlet plate is only used for water inlet, and the water outlet plate is only used for water outlet. A water injection chamber and a heating chamber are also arranged on the bottom surface of the holding cylinder body.

[0009] Further, a small heater is arranged on the bottom surface of the heating chamber. The water injection chamber and the heating chamber are respectively connected to the water inlet plate and the water outlet plate through water pipes. Return plates are arranged on the surfaces of the water injection chamber and the heating chamber close to each other. Communication cavities are opened at the centers of the return plates. Buckles are arranged on the upper surfaces of the return plates, and fixing blocks matched with the buckles are arranged on the bottom surface of the holding cylinder body.

[0010] Further, a small water pump is arranged inside the heating chamber. The water outlet pipe of the small water pump is communicated with the communication cavity. A shaft body is arranged at the connection between the return plate on the bottom surface of the water injection chamber and the water injection chamber. A water passing plate is arranged at the center of the return plate below the water injection chamber. One end of the water passing plate is provided with a water outlet end, and a water outlet groove is opened on the bottom surface of the water outlet end.

[0011] Further, a water injection port is opened on the upper surface of the return plate on the bottom surface of the water injection chamber. A water blocking block matched with the water injection port is also arranged on the bottom surface of the water injection chamber. A water injection movable box is arranged below the return plate on the bottom surface of the water injection chamber. A pull handle is arranged on one side surface of the water injection movable box. A water pressing plate is arranged inside the water injection movable box, and an electric telescopic rod is arranged at one end of the water pressing plate.

[0012] Further, the expansion mechanism further includes a lubrication component. The lubrication component includes: a lubrication box, which is arranged at one end of the holding cylinder body where an entrance and an exit are opened. A top cover plate is arranged on the upper surface of the lubrication box. A lubricating liquid injection port is also arranged on the upper surface of the lubrication box. A lubrication inner sleeve is arranged inside the lubrication box.

[0013] Further, a lubricating liquid storage cavity is opened between the lubrication box and the lubrication inner sleeve. A movable water pressing ring is arranged inside the lubricating liquid storage cavity. Two small telescopic rods are arranged at one end of the water pressing ring. Fixing blocks are arranged at the ends of the two small telescopic rods. The two fixing blocks are respectively fixedly installed on the upper and lower surfaces of one end of the holding cylinder body. A plurality of liquid seepage openings are opened on the surface of the lubrication inner sleeve, and a plurality of coating rollers are arranged at the centers of the liquid seepage openings.

[0014] Further, an entrance and an exit are opened at one end of the holding cylinder body. An operation button is arranged on the side surface of the holding cylinder body, and a display screen is also arranged on the side surface of the holding cylinder body.

[0015] A control method for a urethral dilator used in urological surgery, comprising the following steps:

[0016] S1: First, the staff takes out a set of replacement parts and installs them inside the holding cylinder. First, the staff operates the operation button, so that the small motor starts to drive after receiving the control signal of the operation button, and finally the inner support rod exits from the entrance and exit. The staff sleeves the inner support rod of the replacement component on the surface of the inner support rod, and after completely wrapping the inner support rod, inserts and fixes the top sphere and the installation top plate at the end of the inner support rod. Subsequently, the installation collar is fixedly connected to one end of the holding cylinder, and the installation collar is inserted into the installation channel on the side surface of the holding cylinder for fixation. In this way, the replacement parts are completely installed on the holding cylinder;

[0017] S2: Subsequently, the staff operates the operation button to reverse the small motor. As the inner support rod enters the inside of the holding cylinder, the installation top plate moves with the top sphere, causing the elastic expansion sleeve to fold inward, and finally entering the inside of the holding cylinder along with the inner support rod, thus completing the preparation stage of the device;

[0018] S3: Before the staff uses it formally, the lubricating box is filled with lubricating fluid through the lubricating fluid injection port. Subsequently, when the outer surface of the elastic expansion sleeve exits the inside of the holding cylinder, it contacts the coating roller with the outer surface of the elastic expansion sleeve, causing the coating roller to start rotating, automatically covering the lubricating fluid inside on the surface of the coating roller, and finally evenly coating the outer surface of the elastic expansion sleeve;

[0019] S4: During use, the staff aligns one end of the holding cylinder with the patient's urethral orifice and operates the operation button. Under the action of the inner support rod exiting, the inner support rod drives the elastic expansion sleeve into the patient's urethra, and gradually expands it using the subsequent water injection component. When exiting the patient's body, it also follows the above principle. After the inner support rod drives the elastic expansion sleeve into the patient's urethra, the staff uses the operation button to drive the electric telescopic rod on the side surface of the water pressure plate, causing the water pressure plate to move inside the water injection activity box, thereby pressing the water inside the water injection activity box into the inside of the water inlet plate through the water guide pipe. The water flow enters the inside of the holding cylinder after entering, exits from the entrance and exit, and enters the inside of the elastic expansion sleeve, causing the elastic expansion sleeve to start expanding gradually, expanding the patient's urethra. The staff can observe the water injection volume through the display screen to judge the width of the elastic expansion sleeve;

[0020] S5: After the urethral dilation is completed, the staff operates the operation button again to drive the inner support rod to retract into the interior of the holding cylinder by means of a small motor. After the movable disc body reaches the final position, the water outlet plate will be exposed and come into contact with the water inside the holding cylinder. Subsequently, the water flow inside the holding cylinder is pumped back into the interior of the heating chamber by a small water pump inside the heating chamber, and the water flow is heated inside the heating chamber by a small heater.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] 1. In this solution, by providing a telescopic assembly and driving the threaded rod to rotate through a small motor, precise telescopic control of the inner support rod and the elastic expansion sleeve is achieved, simplifying the cumbersome steps of traditional manual adjustment, improving the surgical efficiency, and ensuring the smoothness and controllability of the dilation process. More importantly, the inward and outward folding entry and exit mechanism effectively avoids the direct friction of the side wall of the elastic expansion sleeve against the inner surface of the patient's urethra, significantly reducing the irritation and discomfort during the surgical process and enhancing the patient's comfort.

[0023] 2. In this solution, by providing a water injection assembly and through a precise water flow control system, precise regulation of the water flow rate during the urethral dilation process is achieved. By combining the use of a heating chamber and a small water pump, the appropriate temperature of the injected water flow is ensured and water flow pollution is avoided, improving the hygiene standard of the surgery. At the same time, the design of the return plate and the communication cavity enables the water flow to be recycled, reducing the preparation time required for the equipment.

[0024] 3. In this solution, by providing a lubrication assembly and through the cooperation of the coating roller and the water pressing ring, uniform lubrication of the outer surface of the elastic expansion sleeve is achieved, simplifying the lubricating fluid coating process, improving the surgical efficiency, and ensuring the full coverage and uniform distribution of the lubricating fluid, effectively reducing the resistance when the elastic expansion sleeve enters the urethra and reducing the pain and discomfort of the patient. Description of the Drawings

[0025] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 is a schematic diagram of the internal structure of the present invention;

[0027] Figure 3 is a schematic diagram of the water injection movable box structure of the water injection assembly of the present invention;

[0028] Figure 4 is a schematic diagram of the water passing plate structure of the present invention;

[0029] Figure 5 is a schematic diagram of the internal structure of the lubrication assembly of the present invention;

[0030] Figure 6 Schematic diagram of the water pressing ring structure of the present invention;

[0031] Figure 7 Schematic diagram of the telescopic component structure of the present invention;

[0032] Figure 8 Schematic diagram of the storage state of the telescopic component of the present invention.

[0033] In the figure: 1, holding cylinder; 2, operation button; 3, display screen; 4, heating chamber; 5, water injection chamber; 6, water injection movable box; 7, water inlet plate; 8, lubricating box; 9, elastic expansion sleeve; 10, inner support rod; 11, top sphere; 12, installation top plate; 13, movable disk body; 14, clamping block; 15, threaded rod; 16, return flow plate; 17, small heater; 18, water outlet plate; 19, small motor; 20, water guide pipe; 21, water injection port; 22, water pressing plate; 23, water passing plate; 24, buckle; 25, water outlet end; 26, water blocking block; 27, pull handle; 28, communication cavity; 29, top cover plate; 30, lubricating liquid injection port; 31, lubricating inner sleeve; 32, liquid seepage opening; 33, coating roller; 34, water pressing ring; 35, small telescopic rod; 36, fixing block; 37, installation sleeve ring; 38, meshing plate. Specific embodiments

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in 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 creative efforts shall fall within the protection scope of the present invention.

[0035] Embodiment 1: Please refer to Figures 1 to 8 , a urethral dilator for urological surgery and its control method, including:

[0036] Hold the holding cylinder 1. An entrance and exit is provided at one end of the holding cylinder 1. Operation buttons 2 are arranged on the side surface of the holding cylinder 1. A display screen 3 is also arranged on the side surface of the holding cylinder 1. An expansion mechanism is arranged inside the holding cylinder 1. The expansion mechanism includes a telescopic component and a water injection component. The telescopic component includes a replacement part. The replacement part includes: a top sphere 11. An elastic expansion sleeve 9 is arranged on one side surface of the top sphere 11. An installation collar 37 is arranged at the end of the elastic expansion sleeve 9 away from the top sphere 11. The telescopic component further includes: a small motor 19. The small motor 19 is arranged at one end of the holding cylinder 1. A threaded rod 15 is arranged on the output end of the small motor 19. A meshing plate 38 is meshed on the surface of the threaded rod 15. A movable disk body 13 is arranged on the bottom surface of the meshing plate 38. An inner support rod 10 is arranged on one side surface of the movable disk body 13. One end of the inner support rod 10 is provided with an installation top plate 12. An interface for fixing with the top sphere 11 is arranged on one side surface of the installation top plate 12. An interface for fixing with the installation collar 37 is also arranged at one end of the holding cylinder 1;

[0037] In use, since the replacement parts in this solution are disposable items, first, the staff takes out a set of replacement parts and installs them inside the holding cylinder 1. The specific operation steps are as follows: First, the staff operates the operation button 2, so that the small motor 19 starts to drive after receiving the control signal from the operation button 2. When the small motor 19 drives the threaded rod 15 to rotate, due to the meshing effect between the threaded rod 15 and the meshing plate 38, the movable disk body 13 moves inside the holding cylinder 1, and finally the inner support rod 10 exits from the entrance and exit, and finally stops after the movable disk body 13 reaches one side inside the holding cylinder 1. At this time, the inner support rod 10 completely exits the inside of the holding cylinder 1. Subsequently, the staff installs the replacement parts above the inner support rod 10. First, the staff sleeves the inner support rod 10 of the replacement assembly on the surface of the inner support rod 10. After completely wrapping the inner support rod 10, the top sphere 11 and the installation top plate 12 at the end of the inner support rod 10 are inserted and fixed together. Then, the installation collar 37 is fixedly connected to one end of the holding cylinder 1. The installation collar 37 is inserted into the installation channel on the side surface of the holding cylinder 1 for fixation. In this way, the replacement parts are completely installed on the holding cylinder 1. Subsequently, the staff manipulates the operation button 2 to make the small motor 19 reverse. Due to the fixation effect between the top sphere 11 and the installation top plate 12, as the inner support rod 10 enters the inside of the holding cylinder 1, the installation top plate 12 moves with the top sphere 11, causing the elastic expansion sleeve 9 to fold inward, and finally following the inner support rod 10 into the inside of the holding cylinder 1. At this time, the elastic expansion sleeve 9 located inside the holding cylinder 1 is in an inside-out and outside-in folded state, that is, the original outer wall now becomes the inner wall after folding. In this way, the preparation stage of the device is completed, and then normal use can begin. During use, the staff aligns one end of the holding cylinder 1 with the patient's urethral orifice and manipulates the operation button 2. Under the action of the inner support rod 10 exiting, the inner support rod 10 drives the elastic expansion sleeve 9 into the patient's urethra and gradually expands it using the subsequent water injection assembly. When exiting the patient's body, it also follows the above principle, making the inner support rod 10 drive the elastic expansion sleeve 9 into the inside of the holding cylinder 1, and the elastic expansion sleeve 9 gradually exits the patient's body. Because the inside-out and outside-in entry and exit mechanism is used, when the expansion mechanism exits or enters, the side wall of the elastic expansion sleeve 9 will not rub against the inner surface of the patient's urethra, thereby reducing the irritation to the patient and improving the patient's comfort during use.

[0038] The water injection assembly includes: a water inlet plate 7 and a water outlet plate 18. The water inlet plate 7 and the water outlet plate 18 are both arranged on the inner bottom surface of the holding cylinder 1. Check valves are arranged at the centers of the water inlet plate 7 and the water outlet plate 18. The water inlet plate 7 can only be used for water inlet, and the water outlet plate 18 can only be used for water outlet. A water injection chamber 5 and a heating chamber 4 are also arranged on the bottom surface of the holding cylinder 1. A small heater 17 is arranged on the bottom surface of the heating chamber 4. The water injection chamber 5 and the heating chamber 4 are respectively connected to the water inlet plate 7 and the water outlet plate 18 through a water guide pipe 20. Return plates 16 are arranged on the surfaces of the water injection chamber 5 and the heating chamber 4 close to each other. Communication cavities 28 are opened at the centers of the return plates 16. Buckles 24 are arranged on the upper surfaces of the return plates 16. A clamping block 14 matched with the buckle 24 is arranged on the bottom surface of the holding cylinder 1. A small water pump is arranged inside the heating chamber 4. The water outlet pipe of the small water pump is communicated with the communication cavity 28. A shaft body is arranged at the connection between the return plate 16 on the bottom surface of the water injection chamber 5 and the water injection chamber 5. A water passing plate 23 is arranged at the center of the return plate 16 below the water injection chamber 5. One end of the water passing plate 23 is provided with a water outlet end 25. A water outlet slot is opened on the bottom surface of the water outlet end 25. A water injection port 21 is also opened on the upper surface of the return plate 16 on the bottom surface of the water injection chamber 5. A water blocking block 26 matched with the water injection port 21 is arranged on the bottom surface of the water injection chamber 5. A water injection movable box 6 is arranged below the return plate 16 on the bottom surface of the water injection chamber 5. A pull handle 27 is arranged on one side surface of the water injection movable box 6. A water pressure plate 22 is arranged inside the water injection movable box 6. One end of the water pressure plate 22 is provided with an electric telescopic rod;

[0039] The water injection assembly is used after the urethra of the patient needs to be dilated. After the inner support rod 10 drives the elastic expansion sleeve 9 into the patient's urethra, the staff drives the electric telescopic rod on the side surface of the water pressure plate 22 by using the operation button 2, so that the water pressure plate 22 moves inside the water injection activity box 6, thereby pressing the water inside the water injection activity box 6 into the inside of the water inlet plate 7 through the water guide pipe 20, and finally entering the inside of the holding cylinder 1 through the water inlet plate 7. Because the movable disk body 13 is located near the entrance and exit at this time and has a blocking effect on the water flow, after the water flow enters the inside of the holding cylinder 1, it exits from the entrance and exit and enters the inside of the elastic expansion sleeve 9, and the elastic expansion sleeve 9 begins to gradually expand, so that the patient's urethra begins to expand. The staff can observe the water injection volume through the display screen 3 to judge the width of the elastic expansion sleeve 9. After the urethra dilation is completed, the staff operates the operation button 2 again to drive the inner support rod 10 to retract into the inside of the holding cylinder 1 by the small motor 19. After the movable disk body 13 reaches the final position, the water outlet plate 18 will be exposed and come into contact with the water inside the holding cylinder 1. Subsequently, the small water pump inside the heating chamber 4 pumps the water flow inside the holding cylinder 1 back into the inside of the heating chamber 4, and the small heater 17 heats the water flow inside the heating chamber 4. Finally, the small water pump inputs the water flow into the inside of the return plate 16. Through the connection of the two return plates 16 on the side surfaces of the water injection chamber 5 and the heating chamber 4, after the water flow enters the inside of the return plate 16 on the side surface of the water injection chamber 5, it passes through the communication cavity 28 for water flow, and the water flow returns to the inside of the water injection chamber 5 again through the water outlet slot below the water outlet end 25 for reuse. Because of the shielding effect of the movable disk body 13 on the water flow, during the injection and expansion of the elastic expansion sleeve 9 by the water flow, including the subsequent extraction process, the water flow always contacts the inner side surface of the elastic expansion sleeve 9, and the outer side surface of the elastic expansion sleeve 9 in direct contact with the patient's urethra never directly contacts the water flow, thereby ensuring the sanitary conditions of the water flow. When water flow needs to be added, the staff pulls the handle 27 to rotate and open the return plate 16 through the shaft body at the connection with the water injection chamber 5, and fills the inside of the water injection activity box 6 with water flow through the water injection port 21.

[0040] The expansion mechanism further includes a lubrication component, and the lubrication component includes: a lubrication box 8, the lubrication box 8 is arranged at one end of the holding cylinder 1 where an entrance and an exit are provided, the upper surface of the lubrication box 8 is provided with a top cover plate 29, the upper surface of the lubrication box 8 is further provided with a lubricating fluid injection port 30, the inside of the lubrication box 8 is provided with a lubrication inner sleeve 31, a lubricating fluid storage cavity is formed between the lubrication box 8 and the lubrication inner sleeve 31, a movable water pressure ring 34 is arranged inside the lubricating fluid storage cavity, one end of the water pressure ring 34 is provided with two small telescopic rods 35, one end of the small telescopic rods 35 is provided with a fixed block 36, and the two fixed blocks 36 are respectively fixedly installed on the upper and lower surfaces of one end of the holding cylinder 1. The surface of the lubrication inner sleeve 31 is provided with a plurality of liquid seepage openings 32, and a plurality of coating rollers 33 are arranged at the centers of the liquid seepage openings 32;

[0041] The lubrication component is used to apply lubricating fluid to the outer surface of the elastic expansion sleeve 9, so that the elastic expansion sleeve 9 can enter the patient's urethra more conveniently. First, the staff removes the top cover plate 29, and then fills the inside of the lubrication box 8 with lubricating fluid through the lubricating fluid injection port 30. Subsequently, when the inner support rod 10 drives the elastic expansion sleeve 9 out of the inside of the holding cylinder 1, when the outer surface of the elastic expansion sleeve 9 exits the inside of the holding cylinder 1, the surface contacts the coating roller 33, and the coating roller 33 starts to rotate, gradually covering the lubricating fluid inside on the surface of the coating roller 33, and finally evenly applying the lubricating fluid to the outer surface of the elastic expansion sleeve 9, so that the surface of the elastic expansion sleeve 9 is filled with lubricating fluid and can enter the patient's urethra more easily.

[0042] The working principle of the present invention is:

[0043] During use, since the replacement parts in this solution are disposable items, first, the staff takes out a set of replacement parts and installs them inside the holding cylinder 1. The specific operation steps are as follows: First, the staff operates the operation button 2, so that the small motor 19 starts to drive after receiving the control signal from the operation button 2. When the small motor 19 drives the threaded rod 15 to rotate, due to the meshing effect between the threaded rod 15 and the meshing plate 38, the movable disk body 13 moves inside the holding cylinder 1, and finally the inner support rod 10 exits from the entrance and exit, and finally stops after the movable disk body 13 reaches one side inside the holding cylinder 1. At this time, the inner support rod 10 completely exits the inside of the holding cylinder 1. Subsequently, the staff installs the replacement parts above the inner support rod 10. First, the staff sleevs the inner support rod 10 of the replacement assembly on the surface of the inner support rod 10. After completely wrapping the inner support rod 10, the top sphere 11 and the installation top plate 12 at the end of the inner support rod 10 are inserted and fixed together. Then, the installation collar 37 is fixedly connected to one end of the holding cylinder 1. The installation collar 37 is inserted into the installation channel on the side surface of the holding cylinder 1 for fixation. In this way, the replacement parts are completely installed on the holding cylinder 1. Subsequently, the staff operates the operation button 2 to make the small motor 19 reverse. Due to the fixed effect between the top sphere 11 and the installation top plate 12, as the inner support rod 10 enters the inside of the holding cylinder 1, the installation top plate 12 moves along with the top sphere 11, causing the elastic expansion sleeve 9 to fold inward, and finally enters the inside of the holding cylinder 1 along with the inner support rod 10. At this time, the elastic expansion sleeve 9 located inside the holding cylinder 1 is in an inside-out and outside-in folded state, that is, the original outer wall now becomes the inner wall after folding. In this way, the preparation stage of the device is completed, and then normal use can begin. During use, the staff aligns one end of the holding cylinder 1 with the patient's urethral orifice and operates the operation button 2. Under the action of the inner support rod 10 exiting, the inner support rod 10 drives the elastic expansion sleeve 9 into the patient's urethra and gradually expands it using the subsequent water injection assembly. When exiting the patient's body, it also follows the above principle, making the inner support rod 10 drive the elastic expansion sleeve 9 into the inside of the holding cylinder 1, causing the elastic expansion sleeve 9 to gradually exit the patient's body. Because the inside-out and outside-in entry and exit mechanism is used, when the expansion mechanism enters or exits, the side wall of the elastic expansion sleeve 9 will not rub against the inner surface of the patient's urethra, thereby reducing the irritation to the patient and improving the patient's comfort during use;

[0044] The water injection assembly is used after the urethra of the patient needs to be dilated. After the inner support rod 10 drives the elastic dilation sleeve 9 into the patient's urethra, the staff drives the electric telescopic rod on the side surface of the water pressure plate 22 by using the operation button 2, so that the water pressure plate 22 moves inside the water injection activity box 6, thereby pressing the water inside the water injection activity box 6 into the inside of the water inlet plate 7 through the water guide pipe 20, and finally entering the inside of the holding cylinder 1 through the water inlet plate 7. Because the movable disk body 13 is located near the entrance and exit at this time and has a blocking effect on the water flow, after the water flow enters the inside of the holding cylinder 1, it exits from the entrance and exit and enters the inside of the elastic dilation sleeve 9, and the elastic dilation sleeve 9 begins to gradually expand, so that the patient's urethra begins to dilate. The staff can observe the water injection volume through the display screen 3 to judge the width of the elastic dilation sleeve 9. After the urethra dilation is completed, the staff operates the operation button 2 again to drive the inner support rod 10 to retract into the inside of the holding cylinder 1. After the movable disk body 13 reaches the final position, the water outlet plate 18 will be exposed and contact the water inside the holding cylinder 1. Subsequently, the small water pump inside the heating chamber 4 pumps the water flow inside the holding cylinder 1 back into the inside of the heating chamber 4, and the small heater 17 heats the water flow inside the heating chamber 4. Finally, the small water pump inputs the water flow into the inside of the return plate 16. Through the joint of the two return plates 16 on the side surfaces of the water injection chamber 5 and the heating chamber 4, after the water flow enters the inside of the return plate 16 on the side surface of the water injection chamber 5, it passes through the communication cavity 28 for water flow, and the water flow returns to the inside of the water injection chamber 5 again through the water outlet slot below the water outlet end 25 for reuse. Because of the shielding effect of the movable disk body 13 on the water flow, during the injection and dilation of the elastic dilation sleeve 9 by the water flow, including the subsequent extraction process, the water flow always contacts the inner side surface of the elastic dilation sleeve 9, and the outer side surface of the elastic dilation sleeve 9 in direct contact with the patient's urethra never directly contacts the water flow, thereby ensuring the sanitary conditions of the water flow. When water flow needs to be added, the staff pulls the pull handle 27 to rotate and open the return plate 16 through the shaft body at the connection with the water injection chamber 5, and fills the inside of the water injection activity box 6 with water flow through the water injection port 21;

[0045] The lubricating assembly is used to apply lubricating fluid to the outer surface of the elastic expansion sleeve 9, so that the elastic expansion sleeve 9 can more conveniently enter the patient's urethra. First, the staff removes the top cover plate 29, and then fills the inside of the lubricating box 8 with lubricating fluid through the lubricating fluid injection port 30. Subsequently, when the inner support rod 10 drives the elastic expansion sleeve 9 out of the inside of the holding cylinder 1, when the outer surface of the elastic expansion sleeve 9 exits the inside of the holding cylinder 1, the surface contacts the application roller 33, and causes the application roller 33 to start rotating, gradually covering the inside of the lubricating fluid on the surface of the application roller 33, and finally evenly applying it to the outer surface of the elastic expansion sleeve 9, so that the surface of the elastic expansion sleeve 9 is filled with lubricating fluid and can more easily enter the patient's urethra.

[0046] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A urethral dilator for urological surgery, characterized in that: include: A gripping cylinder (1), wherein an expansion mechanism is arranged inside the gripping cylinder (1), wherein the expansion mechanism comprises a telescopic assembly and a water injection assembly, wherein the telescopic assembly comprises a replacement component, wherein the replacement component comprises: a top sphere (11), wherein a side surface of the top sphere (11) is provided with an elastic expansion sleeve (9), and an end of the elastic expansion sleeve (9) facing away from the top sphere (11) is provided with a mounting collar (37); The telescopic assembly further comprises: a small motor (19), the small motor (19) being arranged at the end of the holding cylinder (1), a threaded rod (15) being arranged on the output end of the small motor (19), a meshing plate (38) being meshed on the surface of the threaded rod (15), a movable disk (13) being arranged on the bottom surface of the meshing plate (38), an inner support rod (10) being arranged on one side surface of the movable disk (13), a mounting top plate (12) being arranged on one end of the inner support rod (10), an interface for fixing with the top ball (11) being arranged on one side surface of the mounting top plate (12), and an interface for fixing with the mounting collar (37) being arranged on one end of the holding cylinder (1); The water injection assembly comprises: a water inlet plate (7) and a water outlet plate (18), wherein the water inlet plate (7) and the water outlet plate (18) are both arranged on the inner bottom surface of the holding cylinder (1), and a one-way valve is arranged at the center of the water inlet plate (7) and the water outlet plate (18), wherein the water inlet plate (7) can only be used for water inlet, and the water outlet plate (18) can only be used for water outlet, and the bottom surface of the holding cylinder (1) is also provided with a water injection chamber (5) and a heating chamber (4).

2. A urethral dilator for urological surgery according to claim 1, characterized in that: The bottom surface of the heating chamber (4) is provided with a small heater (17); the water filling chamber (5) and the heating chamber (4) are respectively connected to the water inlet plate (7) and the water outlet plate (18) via a water guide pipe (20); the surface of the water filling chamber (5) and the heating chamber (4) on one side thereof close to each other is provided with a return plate (16); a connecting cavity (28) is provided at the center of the return plate (16); a buckle (24) is provided on the upper surface of the return plate (16); and a fixing block (14) matched with the buckle (24) is provided on the bottom surface of the holding cylinder (1).

3. A urethral dilator for urological surgery according to claim 2, characterized in that: A small water pump is arranged inside the heating chamber (4), and a water outlet pipe of the small water pump is connected to the connecting chamber (28). An axis is arranged at the connection between the return plate (16) on the bottom surface of the water filling chamber (5) and the water filling chamber (5). A water passing plate (23) is arranged at the center of the return plate (16) below the water filling chamber (5). A water outlet (25) is arranged at one end of the water passing plate (23), and a water outlet groove is arranged on the bottom surface of the water outlet (25).

4. A urethral dilator for urological surgery according to claim 3, characterized in that: A water inlet (21) is also provided on the upper surface of the return plate (16) on the bottom surface of the water filling bin (5), and a water blocking block (26) matching the water inlet (21) is also provided on the bottom surface of the water filling bin (5). A water filling movable box (6) is provided below the return plate (16) on the bottom surface of the water filling bin (5), and a handle (27) is provided on one side surface of the water filling movable box (6). A water pressure plate (22) is provided inside the water filling movable box (6), and an electric telescopic rod is provided at one end of the water pressure plate (22).

5. The urethral dilator for urological surgery according to claim 1, characterized in that: The expansion mechanism also includes a lubrication component, which includes: a lubrication box (8), the lubrication box (8) is arranged at one end of the holding cylinder (1) where an inlet and outlet are opened, the upper surface of the lubrication box (8) is provided with a top cover plate (29), the upper surface of the lubrication box (8) is also provided with a lubricating liquid injection port (30), and the interior of the lubrication box (8) is provided with a lubrication inner sleeve (31).

6. A urethral dilator for urological surgery according to claim 5, characterized in that: A lubricating liquid storage chamber is provided between the lubricating box (8) and the lubricating inner sleeve (31), and a movable water pressure ring (34) is provided inside the lubricating liquid storage chamber. Two small telescopic rods (35) are provided at one end of the water pressure ring (34), and a fixing block (36) is provided at one end of the small telescopic rod (35). The two fixing blocks (36) are respectively fixedly mounted on the upper and lower surfaces of one end of the holding cylinder (1). A plurality of liquid seepage openings (32) are provided on the surface of the lubricating inner sleeve (31), and a plurality of coating rollers (33) are provided at the center of the liquid seepage openings (32).

7. A urethral dilator for urological surgery according to claim 1, characterized in that: An entrance and exit are provided at one end of the holding cylinder (1), an operation button (2) is provided on the side surface of the holding cylinder (1), and a display screen (3) is also provided on the side surface of the holding cylinder (1).

8. A control method for a urethral dilator for urological surgery, applied to a urethral dilator for urological surgery according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1: First, the staff takes out a set of replacement parts and installs them inside the holding cylinder (1). First, the staff operates the operating button (2) so that the small motor (19) starts to drive after receiving the control signal of the operating button (2), and finally the inner support rod (10) is separated from the entrance. The staff sets the inner support rod (10) of the replacement assembly on the surface of the inner support rod (10), and after completely wrapping the inner support rod (10), the top ball (11) is inserted and fixed with the mounting top plate (12) at the end of the inner support rod (10), and then the mounting ring (37) is used to fix it with one end of the holding cylinder (1). The mounting ring (37) is inserted into the mounting groove on the side surface of the holding cylinder (1) for fixing. The replacement part is thus completely installed with the holding cylinder (1); S2: Subsequently, the staff manipulates the operating button (2) to reverse the rotation of the small motor (19). As the inner support rod (10) enters the interior of the holding cylinder (1), the top plate (12) is installed to move along with the top ball (11), so that the elastic expansion sleeve (9) is folded inwards and finally enters the interior of the holding cylinder (1) along with the inner support rod (10), thereby completing the preparation stage of the equipment. S3: Before the official use, the staff fills the lubricating liquid into the lubricating box (8) through the lubricating liquid injection port (30), and then, when the outer surface of the elastic expansion sleeve (9) leaves the inside of the holding cylinder (1), the outer surface of the elastic expansion sleeve (9) contacts the coating roller (33), and the coating roller (33) starts to rotate, so that the lubricating liquid inside is gradually covered on the surface of the coating roller (33), and finally the outer surface of the elastic expansion sleeve (9) is evenly coated; S4: When in use, the staff aligns one end of the holding cylinder (1) with the patient's urethral opening and operates the operating button (2). When the inner support rod (10) is released, the inner support rod (10) drives the elastic expansion sleeve (9) to enter the patient's urethra, and the subsequent water injection assembly is used to gradually expand the sleeve. When the sleeve is released from the patient's body, the above principle is also followed. After the inner support rod (10) drives the elastic expansion sleeve (9) to enter the patient's urethra, the staff uses the operating button (2) to press the water pressure plate (22). The electric telescopic rod on the side surface is driven to move the water pressure plate (22) inside the water injection movable box (6), thereby pressing the water inside the water injection movable box (6) into the water inlet plate (7) through the water guide pipe (20). After entering the inside of the holding cylinder (1), the water flows out from the inlet and outlet and enters the inside of the elastic expansion sleeve (9), causing the elastic expansion sleeve (9) to gradually expand, causing the patient's urethra to expand. The staff can observe the water injection amount on the display screen (3) to judge the width of the elastic expansion sleeve (9); S5: After the urethral dilation is completed, the staff operates the operating button (2) again to cause the small motor (19) to drive the inner support rod (10) to retract into the interior of the holding cylinder (1). After the movable disk (13) reaches the final position, the water outlet plate (18) is exposed and comes into contact with the water inside the holding cylinder (1). Subsequently, the water flow inside the holding cylinder (1) is pumped back into the interior of the heating chamber (4) through the small water pump inside the heating chamber (4), and the water flow is heated inside the heating chamber (4) through the small heater (17).

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