Urethral dilator for urological surgery and control method thereof

Abstract

The present invention discloses a urethral dilator for urological surgery and a control method thereof, which relates to the technical field of dilators. The urethral dilator comprises a holding cylinder, an expansion mechanism is arranged inside the holding cylinder, the expansion mechanism comprises a telescopic assembly and a water injection assembly, the telescopic assembly comprises a replacement component, the replacement component comprises: a top sphere, an elastic expansion sleeve is arranged on one side surface of the top sphere, the telescopic assembly further comprises: a small motor, the small motor is arranged at the end of the holding cylinder, a threaded rod is arranged on the output end of the small motor, an engaging plate is engaged with the surface of the threaded rod, the water injection assembly comprises: a water inlet plate and a water outlet plate, both the water inlet plate and the water outlet plate are arranged on the inner bottom surface of the holding cylinder. In this solution, by providing the expansion mechanism and by the cooperation of the telescopic assembly, the water injection assembly and the lubrication assembly, high efficiency and comfort of urethral dilation are achieved, which significantly improves the quality of urological surgery and patient experience.

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 hyperplasia. 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 directly through rigid dilator components. However, this traditional dilation method has many shortcomings. First, when the rigid dilator is inserted into and removed from the urethra, it is easy to cause friction and damage to the urethral wall, causing pain and discomfort to the patient, and may even cause complications such as urinary tract infection. Second, traditional urethral dilators lack precise control during the dilation process, making it difficult to perform personalized dilation treatment according to the patient's specific situation, thereby 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 background technology.

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

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

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

[0008] The water filling 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, and a one-way valve is provided at the center of the water inlet plate and the water outlet plate. The water inlet plate can only be used for water inlet, and the water outlet plate can only be used for water outlet. The bottom surface of the holding cylinder is also provided with a water filling bin and a heating bin.

[0009] Furthermore, a small heater is provided on the bottom surface of the heating bin, and the water filling bin and the heating bin are respectively connected to the water inlet plate and the water outlet plate through water pipes. A return plate is provided on the side surface close to the water filling bin and the heating bin, and a connecting cavity is opened at the center of the return plate. A buckle is provided on the upper surface of the return plate, and a fixing block matching the buckle is provided on the bottom surface of the holding cylinder.

[0010] Furthermore, a small water pump is provided inside the heating bin, and the water outlet pipe of the small water pump is connected to the connecting cavity. An axis is provided at the connection between the return plate on the bottom of the water filling bin and the water filling bin. A water passing plate is provided at the center of the return plate below the water filling bin, and a water outlet end is provided at one end of the water passing plate, and a water outlet groove is provided on the bottom surface of the water outlet end.

[0011] Furthermore, a water inlet is provided on the upper surface of the return plate on the bottom of the water filling bin, and a water blocking block cooperating with the water inlet is provided on the bottom of the water filling bin. A water filling movable box is provided below the return plate on the bottom of the water filling bin, and a handle is provided on one side surface of the water filling movable box. A water pressure plate is provided inside the water filling movable box, and an electric telescopic rod is provided at one end of the water pressure plate.

[0012] Furthermore, the expansion mechanism also includes a lubrication component, which includes: a lubrication box, which is arranged at one end of the holding cylinder with an inlet and outlet, a top cover plate is provided on the upper surface of the lubrication box, a lubricating liquid injection port is also provided on the upper surface of the lubrication box, and a lubricating inner sleeve is provided inside the lubrication box.

[0013] Furthermore, a lubricating liquid storage chamber is provided between the lubrication box and the lubricating inner sleeve, and a movable water pressure ring is provided inside the lubricating liquid storage chamber. Two small telescopic rods are provided at one end of the water pressure ring, and a fixed block is provided at one end of the small telescopic rod. The two fixed blocks are respectively fixedly mounted on the upper and lower surfaces of one end of the holding cylinder, and a plurality of liquid seepage openings are provided on the surface of the lubricating inner sleeve, and a plurality of smear rollers are provided at the center of the liquid seepage openings.

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

[0015] A method for controlling a urethral dilator for urological surgery comprises the following steps:

[0016] S1: First, the staff takes out a set of replacement parts and installs them inside the gripping cylinder. First, the staff operates the operating button, so that the small motor starts to drive after receiving the control signal of the operating button, and finally the inner support rod is moved out of the entrance and exit. The staff puts the inner support rod of the replacement assembly on the surface of the inner support rod, and after completely wrapping the inner support rod, the top ball is inserted and fixed with the mounting top plate at the end of the inner support rod. Then, the mounting collar is used to fix it to one end of the gripping cylinder. The mounting collar is inserted into the mounting groove on the side surface of the gripping cylinder for fixation. The replacement part is thus completely installed with the gripping cylinder.

[0017] S2: Subsequently, the staff manipulates the operating button to reverse the small motor. As the inner support rod enters the interior of the holding cylinder, the mounting top plate moves along with the top ball, causing the elastic expansion sleeve to fold inwards and finally enter the interior of the holding cylinder along with the inner support rod, thus completing the preparation stage of the equipment.

[0018] S3: Before formal use, the staff fills the lubricating liquid into the lubrication box through the lubricating liquid injection port. Then, when the outer surface of the elastic expansion sleeve is out of the interior of the holding cylinder, the outer surface of the elastic expansion sleeve contacts the coating roller, and the coating roller starts to rotate, automatically and gradually covering the surface of the coating roller with the lubricating liquid inside, 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 opening and operates the operating button. Under the action of the inner support rod coming out, the inner support rod drives the elastic expansion sleeve into the patient's urethra, and uses the subsequent water injection component to gradually expand it. When leaving the patient's body, the above principle is also followed. After the inner support rod drives the elastic expansion sleeve into the patient's urethra, the staff uses the operating button to drive the electric telescopic rod on the side surface of the water pressure plate to move the water pressure plate 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. After entering the inside of the holding cylinder, the water flow exits from the inlet and outlet and enters the inside of the elastic expansion sleeve, causing the elastic expansion sleeve to gradually expand, causing the patient's urethra to begin to expand. The staff can observe the water injection amount on 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 make the small motor drive the inner support rod to retract into the interior of the holding cylinder. After the movable disc reaches the final position, the water outlet plate will be exposed and come into contact with the water inside the holding cylinder. Then, the water flow inside the holding cylinder will be pumped back into the interior of the heating chamber through the small water pump inside the heating chamber, and the water flow will be heated inside the heating chamber through the small heater.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

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

[0023] 2. In this solution, by providing a water injection component and a precise water flow control system, precise control of the water flow during urethral dilation is achieved. The combined use of a heating chamber and a small water pump ensures the appropriate temperature of the injected water flow and avoids water contamination, thereby improving the sanitary standards of the operation. At the same time, the design of the return plate and the connecting cavity allows the water flow to be recycled, reducing the preparation time required for the equipment.

[0024] 3. In this solution, by providing a lubrication component, through the cooperation of the coating roller and the water pressure ring, uniform lubrication of the outer surface of the elastic expansion sleeve is achieved, which simplifies the lubricating liquid application process, improves the surgical efficiency, and ensures sufficient coverage and uniform distribution of the lubricating liquid, effectively reducing the resistance of the elastic expansion sleeve when entering the urethra, and reducing the patient's pain and discomfort. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0026] Figure 2 Schematic diagram of the internal structure of the present invention;

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

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

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

[0030] Figure 6 It is a schematic diagram of the water pressure ring structure of the present invention;

[0031] Figure 7 This is a schematic diagram of the telescopic assembly structure of the present invention;

[0032] Figure 8 It is a structural schematic diagram of the telescopic assembly of the present invention in the stored state.

[0033] Figure: 1. Grip cylinder; 2. Operation button; 3. Display screen; 4. Heating chamber; 5. Water filling chamber; 6. Water filling movable box; 7. Water inlet plate; 8. Lubrication box; 9. Elastic expansion sleeve; 10. Inner support rod; 11. Top ball; 12. Mounting top plate; 13. Movable plate; 14. Fixing block; 15. Threaded rod; 16. Return plate; 17. Small heater; 18. Water outlet plate; 19. Small motor; 2 0. Water guide pipe; 21. Water inlet; 22. Water pressure plate; 23. Water flow plate; 24. Buckle; 25. Water outlet; 26. Water blocking block; 27. Pull handle; 28. Connecting cavity; 29. ​​Top cover; 30. Lubricant injection port; 31. Lubricant inner sleeve; 32. Seepage opening; 33. Applicator roller; 34. Water pressure ring; 35. Small telescopic rod; 36. Fixing block; 37. Mounting ring; 38. Engaging plate. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention 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 making creative efforts are within the scope of protection of the present invention.

[0035] Example 1: Please refer to Figures 1 to 8 , a urethral dilator for urological surgery and a control method thereof, comprising:

[0036] The gripping cylinder 1 has an entrance and exit at one end thereof, an operation button 2 is provided on the side surface of the gripping cylinder 1, a display screen 3 is also provided on the side surface of the gripping cylinder 1, an expansion mechanism is provided inside the gripping cylinder 1, the expansion mechanism includes a telescopic assembly and a water injection assembly, the telescopic assembly includes a replacement component, the replacement component includes: a top sphere 11, an elastic expansion sleeve 9 is provided on one side surface of the top sphere 11, and a mounting collar 37 is provided on the end of the elastic expansion sleeve 9 facing away from the top sphere 11, and the telescopic assembly also includes: a small The motor 19 is provided at one end of the holding cylinder 1. A threaded rod 15 is provided on the output end of the small motor 19. An engaging plate 38 is engaged on the surface of the threaded rod 15. A movable disk 13 is provided on the bottom surface of the engaging plate 38. An inner support rod 10 is provided on one side surface of the movable disk 13. A mounting top plate 12 is provided on one end of the inner support rod 10. An interface for fixing the mounting top plate 11 is provided on one side surface of the mounting top plate 12. An interface for fixing the mounting collar 37 is also provided on one end of the holding cylinder 1.

[0037] During use, since the replacement parts in this solution are disposable, first, the staff takes out a set of replacement parts and installs them inside the gripping 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 of the operation button 2. When the small motor 19 drives the threaded rod 15 to rotate, due to the meshing effect of the threaded rod 15 and the meshing plate 38, the movable disk 13 moves inside the gripping cylinder 1, and finally makes the inner support rod 10 leave from the entrance and exit, and finally stops after the movable disk 13 reaches one side inside the gripping cylinder 1. At this time, the inner support rod 10 is completely out of the inside of the gripping cylinder 1. Then, the staff will install the replacement part on the top of the inner support rod 10. First, the staff will put the inner support rod 10 of the replacement component on the surface of the inner support rod 10, and after completely wrapping the inner support rod 10, the top ball 11 and the mounting top plate 12 at the end of the inner support rod 10 will be inserted and fixed. Then, the mounting collar 37 will be used to fix it with one end of the gripping cylinder 1. The mounting collar 37 is inserted into the mounting groove on the side surface of the gripping cylinder 1 for fixation. The replacement part is thus completely installed with the gripping cylinder 1. Then, the staff operates the operation button 2. The small motor 19 is reversed. Due to the fixing effect of the top ball 11 and the mounting top plate 12, as the inner support rod 10 enters the interior of the gripping cylinder 1, the mounting top plate 12 moves with the top ball 11, causing the elastic expansion sleeve 9 to fold inwards, and finally enter the interior of the gripping cylinder 1 along with the inner support rod 10. At this time, the elastic expansion sleeve 9 inside the gripping cylinder 1 is in an inside-out folded state, that is, the original outer wall is now folded into the inner wall, thereby completing the preparation stage of the equipment, and then normal use can begin. During use, the staff aligns one end of the gripping cylinder 1 with the patient's urethra. And operate the operation button 2, and under the action of the inner support rod 10 coming out, the inner support rod 10 drives the elastic expansion sleeve 9 to enter the patient's urethra, and uses the subsequent water injection component to gradually expand. When leaving the patient's body, it also follows the above principle, so that the inner support rod 10 drives the elastic expansion sleeve 9 to enter the interior of the holding cylinder 1, and the elastic expansion sleeve 9 gradually leaves the patient's body. Because it uses an inside-out folding entry and exit mechanism, when the expansion mechanism is leaving or entering, the side wall of the elastic expansion sleeve 9 will not rub against the internal surface of the patient's urethra, thereby reducing the stimulation to the patient and improving the patient's comfort.

[0038] The water injection assembly includes: a water inlet plate 7 and a water outlet plate 18, both of which are arranged on the inner bottom surface of the holding cylinder 1, and a one-way valve is provided at the center 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. The bottom surface of the holding cylinder 1 is also provided with a water injection bin 5 and a heating bin 4, and the bottom surface of the heating bin 4 is provided with a small heater 17. The water injection bin 5 and the heating bin 4 are respectively connected to the water inlet plate 7 and the water outlet plate 18 through a water pipe 20. The side surface of the water injection bin 5 and the heating bin 4 is provided with a return plate 16, and a connecting cavity 28 is opened 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 matching the buckle 24 is provided on the bottom surface of the holding cylinder 1 , a small water pump is provided inside the heating bin 4, and the water outlet pipe of the small water pump is connected to the connecting cavity 28, and a shaft is provided at the connection between the return plate 16 on the bottom surface of the water filling bin 5 and the water filling bin 5, and a water passing plate 23 is provided at the center of the return plate 16 below the water filling bin 5, and one end of the water passing plate 23 is provided with a water outlet end 25, and the bottom surface of the water outlet end 25 is provided with a water outlet groove, and a water filling port 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 that cooperates with the water filling port 21 is also provided on the bottom surface of the water filling bin 5, and a water injection 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 injection movable box 6, and a water pressure plate 22 is provided inside the water injection movable box 6, and an electric telescopic rod is provided at one end of the water pressure plate 22;

[0039] The water injection assembly is used after the patient's urethra needs to be expanded. 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 drive the electric telescopic rod on the side surface of the water pressure plate 22 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 inside of the water inlet plate 7 through the water guide pipe 20, and finally enters the inside of the holding cylinder 1 through the water inlet plate 7. Because at this time the movable disk 13 is located close to the entrance and exit, and has a blocking effect on the water flow, the water flows in After entering the interior of the gripping cylinder 1, the patient exits from the entrance and exit, and enters the interior 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 amount of water injected based on the display screen 3 to judge the width of the elastic expansion sleeve 9. After the urethra expansion is completed, the staff manipulates the operation button 2 again to cause the small motor 19 to drive the inner support rod 10 to retract into the interior of the gripping cylinder 1. After the movable disc 13 reaches the final position, the water outlet plate 18 is exposed and contacts the water inside the gripping cylinder 1. Subsequently, The water flow inside the holding cylinder 1 is pumped back to the interior of the heating chamber 4 by a small water pump inside the heating chamber 4, and the water flow is heated inside the heating chamber 4 by a small heater 17. Finally, the water flow is input into the interior of the return plate 16 by the small water pump. Through the connection of the two return plates 16 on the side surfaces of the water filling chamber 5 and the heating chamber 4, the water flow enters the interior of the return plate 16 on the side surface of the water filling chamber 5, flows through the connecting cavity 28, and returns to the interior of the water filling chamber 5 through the water outlet slot below the water outlet end 25 for reuse. The shielding effect of the movable disc 13 on the water flow, the water flow is always in contact with the inner side surface of the elastic expansion sleeve 9 during the injection and expansion of the elastic expansion sleeve 9, including the subsequent withdrawal process, and the outer side surface of the elastic expansion sleeve 9 that is in direct contact with the patient's urethra is never in direct contact with 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 the return plate 16 through the axis connected to the water filling bin 5 to open, and fill the interior of the water filling movable box 6 with water flow through the water filling port 21.

[0040] The expansion mechanism also includes a lubrication assembly, which includes: a lubrication box 8, which is arranged at one end of the gripping cylinder 1 with an inlet and outlet, a top cover 29 provided on the upper surface of the lubrication box 8, and a lubricating liquid injection port 30 provided on the upper surface of the lubrication box 8, a lubricating inner sleeve 31 provided inside the lubrication box 8, a lubricating liquid storage chamber provided between the lubrication box 8 and the lubricating inner sleeve 31, a movable water pressure ring 34 provided inside the lubricating liquid storage chamber, two small telescopic rods 35 provided at one end of the water pressure ring 34, a fixed block 36 provided at one end of the small telescopic rod 35, the two fixed blocks 36 are respectively fixedly mounted on the upper and lower surfaces of one end of the gripping cylinder 1, a plurality of liquid seepage openings 32 provided on the surface of the lubricating inner sleeve 31, and a plurality of smear rollers 33 provided at the center of the liquid seepage openings 32;

[0041] The lubrication assembly is used to apply lubricant 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 29, and then fills the interior of the lubrication box 8 with lubricant through the lubricant injection port 30. Then, when the inner support rod 10 drives the elastic expansion sleeve 9 out of the interior of the holding cylinder 1, the outer surface of the elastic expansion sleeve 9 contacts the coating roller 33 when it leaves the interior of the holding cylinder 1, and the coating roller 33 starts to rotate, gradually covering the internal lubricant on the surface of the coating roller 33, and finally evenly coating the outer surface of the elastic expansion sleeve 9, so that the surface of the elastic expansion sleeve 9 is filled with lubricant, which makes it easier to enter the patient's urethra.

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

[0043] During use, since the replacement parts in this solution are disposable, first, the staff takes out a set of replacement parts and installs them inside the gripping 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 of the operation button 2. When the small motor 19 drives the threaded rod 15 to rotate, due to the meshing effect of the threaded rod 15 and the meshing plate 38, the movable disk 13 moves inside the gripping cylinder 1, and finally makes the inner support rod 10 leave from the entrance and exit, and finally stops after the movable disk 13 reaches one side inside the gripping cylinder 1. At this time, the inner support rod 10 is completely out of the inside of the gripping cylinder 1. Then, the staff will install the replacement part on the top of the inner support rod 10. First, the staff will put the inner support rod 10 of the replacement component on the surface of the inner support rod 10, and after completely wrapping the inner support rod 10, the top ball 11 and the mounting top plate 12 at the end of the inner support rod 10 will be inserted and fixed. Then, the mounting collar 37 will be used to fix it with one end of the gripping cylinder 1. The mounting collar 37 is inserted into the mounting groove on the side surface of the gripping cylinder 1 for fixation. The replacement part is thus completely installed with the gripping cylinder 1. Then, the staff operates the operation button 2. The small motor 19 is reversed. Due to the fixing effect of the top ball 11 and the mounting top plate 12, as the inner support rod 10 enters the interior of the gripping cylinder 1, the mounting top plate 12 moves with the top ball 11, causing the elastic expansion sleeve 9 to fold inwards, and finally enter the interior of the gripping cylinder 1 along with the inner support rod 10. At this time, the elastic expansion sleeve 9 inside the gripping cylinder 1 is in an inside-out folded state, that is, the original outer wall is now folded into the inner wall, thereby completing the preparation stage of the equipment, and then normal use can begin. During use, the staff aligns one end of the gripping cylinder 1 with the patient's urethra. The operation button 2 is manipulated, and under the action of the inner support rod 10 being pulled out, the inner support rod 10 drives the elastic expansion sleeve 9 to enter the patient's urethra, and is gradually expanded by using the subsequent water injection component. When exiting the patient's body, the above principle is also followed, so that the inner support rod 10 drives the elastic expansion sleeve 9 to enter the interior of the holding cylinder 1, so that the elastic expansion sleeve 9 gradually exits the patient's body. Because the entry and exit mechanism of the inner and outer folding is used, when the expansion mechanism is exiting or entering, the side wall of the elastic expansion sleeve 9 will not rub against the inner surface of the patient's urethra, thereby reducing irritation to the patient and improving the patient's comfort.

[0044] The water injection assembly is used after the patient's urethra needs to be expanded. 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 drive the electric telescopic rod on the side surface of the water pressure plate 22 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 inside of the water inlet plate 7 through the water guide pipe 20, and finally enters the inside of the holding cylinder 1 through the water inlet plate 7. Because at this time the movable disk 13 is located close to the entrance and exit, and has a blocking effect on the water flow, the water flows in After entering the interior of the gripping cylinder 1, the patient exits from the entrance and exit, and enters the interior 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 amount of water injected based on the display screen 3 to judge the width of the elastic expansion sleeve 9. After the urethra expansion is completed, the staff manipulates the operation button 2 again to cause the small motor 19 to drive the inner support rod 10 to retract into the interior of the gripping cylinder 1. After the movable disc 13 reaches the final position, the water outlet plate 18 is exposed and contacts the water inside the gripping cylinder 1. Subsequently, The water flow inside the holding cylinder 1 is pumped back to the interior of the heating chamber 4 by a small water pump inside the heating chamber 4, and the water flow is heated inside the heating chamber 4 by a small heater 17. Finally, the water flow is input into the interior of the return plate 16 by the small water pump. Through the connection of the two return plates 16 on the side surfaces of the water filling chamber 5 and the heating chamber 4, the water flow enters the interior of the return plate 16 on the side surface of the water filling chamber 5, flows through the connecting cavity 28, and returns to the interior of the water filling chamber 5 through the water outlet slot below the water outlet end 25 for reuse. The shielding effect of the movable disc 13 on the water flow is that the water flow is always in contact with the inner side surface of the elastic expansion sleeve 9 during the injection and expansion of the elastic expansion sleeve 9, including the subsequent withdrawal process, and the outer side surface of the elastic expansion sleeve 9 that is in direct contact with the patient's urethra is always not in direct contact with the water flow, thereby ensuring the sanitary conditions of the water flow. When water needs to be added, the staff pulls the handle 27 to rotate the return plate 16 through the axis connected to the water filling bin 5 to open it, and fill the interior of the water filling movable box 6 with water through the water filling port 21;

[0045] The lubrication assembly is used to apply lubricant 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 29, and then fills the interior of the lubrication box 8 with lubricant through the lubricant injection port 30. Then, when the inner support rod 10 drives the elastic expansion sleeve 9 out of the interior of the holding cylinder 1, the outer surface of the elastic expansion sleeve 9 contacts the coating roller 33 when it leaves the interior of the holding cylinder 1, and the coating roller 33 starts to rotate, gradually covering the internal lubricant on the surface of the coating roller 33, and finally evenly coating the outer surface of the elastic expansion sleeve 9, so that the surface of the elastic expansion sleeve 9 is filled with lubricant, which makes it easier to enter the patient's urethra.

[0046] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection 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 provided 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 to the top ball (11) being arranged on one side surface of the mounting top plate (12), and an interface for fixing to 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 gripping cylinder (1), and a one-way valve is arranged at the center of each 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 gripping cylinder (1) is also provided with a water injection bin (5) and a heating bin (4).

2. The urethral dilator for urological surgery according to claim 1, characterized in that: A small heater (17) is provided on the bottom surface of the heating chamber (4), and 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). A return plate (16) is provided on the surface of the side adjacent to the water filling chamber (5) and the heating chamber (4), and 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) that matches the buckle (24) is provided on the bottom surface of the holding cylinder (1).

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

4. The 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) is also provided on the bottom surface of the water filling bin (5) to match the water inlet (21). 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 further includes a lubrication assembly, 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 lubricating inner sleeve (31).

6. The urethral dilator for urological surgery according to claim 5, characterized in that: A lubricating liquid storage chamber is provided between the lubrication 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 fixed block (36) is provided at one end of the small telescopic rod (35). The two fixed 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. The 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 operating 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).

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