An adjustable urethral dilator

Abstract

This utility model relates to the field of urethral dilators, specifically an adjustable urethral dilator, comprising a main tube with a lubrication mechanism for lubrication before insertion, and an expansion mechanism for gradually adjusting the dilation size. The expansion mechanism includes a sleeve tube fixedly connected to the outer wall of the main tube and a hollow cylinder. This utility model, through the expansion mechanism, controls the movement of the first piston block, the bellows, and the second piston block by rotating a threaded rod. This allows saline solution in the hollow cylinder to be slowly output through micro-holes to the connecting long tube, and then into the sleeve tube, causing the sleeve tube to expand gradually. This avoids damage caused by hard metal probes of different diameters. This gradual dilation method allows the urethra to gradually adapt to the dilation process, avoiding sudden dilation that could cause significant irritation and damage, thus helping to reduce patient pain and improve the dilation effect.

Description

Technical Field

[0001] This utility model relates to the field of urethral dilators, specifically an adjustable urethral dilator. Background Technology

[0002] Male urethral dilators are commonly used medical devices in urological surgery, primarily for the examination and diagnosis of male urethral diseases and surgical treatment of urethral injuries caused by trauma. Their core function is to dilate narrowed urethras. Currently, the most commonly used urethral dilators in clinical practice consist of rigid metal probes of different diameters and models.

[0003] However, this type of metal probe has significant limitations. Because the location and size of urethral stricture vary from patient to patient, just as the thickness and length of each person's finger differ, different sizes of metal probes need to be repeatedly used when dilating the urethra. Furthermore, the size of the metal probe is fixed, unlike a retractable rubber band that can be flexibly adjusted according to the actual situation. It is difficult to adapt the size to different patients' specific needs. This inflexibility makes it easy to damage the urethra during dilation, much like using the wrong key to forcibly unlock a lock—not only is it difficult to achieve the desired result, but it may also damage the lock. Therefore, existing urethral dilators urgently need improvement.

[0004] In view of this, we propose an adjustable urethral dilator. Utility Model Content

[0005] The purpose of this invention is to provide an adjustable urethral dilator. This adjustable urethral dilator solves the problem that currently, male urethral dilators commonly use hard metal probes of different diameters in clinical practice, but these probes need to be repeatedly replaced with different models because the location and size of urethral stricture vary from person to person, which can cause damage to the urethra.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An adjustable urethral dilator includes a main tube with a lubrication mechanism for pre-insertion lubrication and an expansion mechanism for gradually adjusting the dilation size. The expansion mechanism includes: a sleeve tube fixedly connected to the outer wall of the main tube; and a hollow cylinder connected to the sleeve tube via a connecting long tube. A through ring is provided on the inner wall of the hollow cylinder. A fixed plate is fixedly connected to the inner wall of the hollow cylinder, and a spring is provided on the fixed plate. One end of the spring is fixedly connected to the fixed plate, and the other end is fixedly connected to a positioning plate. A guide rod is fixedly connected to the positioning plate and slidably connected to the inner wall of the fixed plate. A micro-hole is provided on the positioning plate. A threaded rod is threadedly connected to the inner wall of the hollow cylinder, and a first piston block is rotatably connected to the threaded rod. A bellows is provided on the first piston block, one end of which is fixedly connected to the first piston block, and the other end of which is fixedly connected to a second piston block. Both the first and second piston blocks are piston-connected to the inner wall of the hollow cylinder.

[0008] Preferably, one end of the connecting tube is fixedly connected to the sleeve tube, and the other end of the connecting tube is fixedly connected to the hollow cylinder.

[0009] Preferably, the lubrication mechanism includes a content cavity, which is formed on the inner wall of the main tube. A connecting tube is provided on the main tube, one end of which is fixedly connected to the main tube, and the other end of which is fixedly connected to a spherical container. An output hole is provided on the side of the main tube away from the connecting tube.

[0010] Preferably, the sleeve is made of medical-grade silicone material, and sealing rubber rings are provided on the outer surfaces of both the first piston block and the second piston block.

[0011] Preferably, the hollow cylinder has graduation markings on its outer wall, and the hollow cylinder is made of transparent plastic.

[0012] Preferably, the inner wall of the hollow cylinder is smoothed, and the connecting tube is elastic.

[0013] Preferably, the threaded rod is provided with a rotating handle, and the surface of the spring is treated with rust prevention.

[0014] By employing the above technical solution, this utility model provides an adjustable urethral dilator. It possesses at least the following beneficial effects:

[0015] 1. This utility model incorporates an expansion mechanism. By rotating a threaded rod, the movement of the first piston block, the bellows, and the second piston block is controlled. This allows the saline solution inside the hollow cylinder to be slowly output through a micro-hole to the connecting long tube, and then into the sleeve tube. This causes the sleeve tube to expand gradually, avoiding damage caused by hard metal probes of different diameters. This gradual expansion method allows the urethra to gradually adapt to the expansion process, avoiding sudden expansion that could cause significant irritation and damage to the urethra. It helps to reduce patient pain and improve the expansion effect.

[0016] 2. This utility model incorporates an expansion mechanism. When the threaded rod is rotated in the reverse direction, the elasticity of the sleeve allows saline solution to enter the hollow cylinder through the connecting long tube, opening the positioning plate and enabling the saline solution to quickly flow back into the hollow cylinder, thus achieving rapid disassembly. This design significantly shortens disassembly time, improves operational efficiency, and reduces patient discomfort during the disassembly process.

[0017] 3. This utility model incorporates a lubrication mechanism. By pressing the spherical container, the lubricating liquid inside the spherical container is output through the connecting pipe, the inner cavity, and the output hole, acting on the urethra to reduce friction and damage to the urethra during dilation. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application:

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a structural schematic diagram of the cross-section of the main tube in this utility model;

[0021] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A;

[0022] Figure 4 This is a schematic diagram of the cross-section of the hollow cylinder in this utility model;

[0023] Figure 5 This utility model Figure 4 A magnified structural diagram at point B in the middle.

[0024] In the diagram: 1. Main tube; 2. Lubrication mechanism; 21. Internal cavity; 22. Connecting tube; 23. Spherical container; 24. Output hole; 3. Expansion mechanism; 31. Sleeve tube; 32. Connecting long tube; 33. Hollow cylinder; 34. Passing ring; 35. Fixed plate; 36. Spring; 37. Positioning plate; 38. Guide rod; 39. Micro-hole; 310. Threaded rod; 311. First piston block; 312. Bellows; 313. Second piston block. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1 - Figure 5As shown, this utility model provides a technical solution: an adjustable urethral dilator, including a main tube 1, a lubrication mechanism 2 for lubrication before insertion, and an expansion mechanism 3 for slowly adjusting the expansion size. The expansion mechanism 3 includes: a sleeve tube 31 fixedly connected to the outer wall of the main tube 1; a hollow cylinder 33 connected to the sleeve tube 31 via a connecting long tube 32; a through ring 34 on the inner wall of the hollow cylinder 33; a fixing plate 35 fixedly connected to the inner wall of the hollow cylinder 33; and a spring 36 on the fixing plate 35, one end of which is fixedly connected to the fixing plate. On the fixed plate 35, the other end of the spring 36 is fixedly connected to a positioning plate 37, and a guide rod 38 is fixedly connected to the positioning plate 37. The guide rod 38 is slidably connected to the inner wall of the fixed plate 35. A micro-hole 39 is opened on the positioning plate 37. A threaded rod 310 is threadedly connected to the inner wall of the hollow cylinder 33. A first piston block 311 is rotatably connected to the threaded rod 310. A bellows 312 is provided on the first piston block 311. One end of the bellows 312 is fixedly connected to the first piston block 311, and the other end of the bellows 312 is fixedly connected to a second piston block 313. Both the first piston block 311 and the second piston block 313 are piston-connected to the inner wall of the hollow cylinder 33. The inner walls of the sleeve 31, connecting long tube 32, and hollow cylinder 33 are all lined with saline solution. Rotating the threaded rod 310 causes the first piston block 311, bellows 312, and second piston block 313 to move closer to the through ring 34. At this time, the saline solution on the inner wall of the hollow cylinder 33 compresses the connecting long tube 32 and the through ring 34, making the through ring 34 tightly sealed. The saline solution on the inner wall of the hollow cylinder 33 can only slowly output to the connecting long tube 32 through the micro-hole 39. High pressure is formed inside the hollow cylinder 33, compressing the air inside the bellows 312. When the threaded rod 310 stops rotating, the bellows 31... The compressed air inside the tube 2 also drives the second piston block 313 to squeeze the saline solution inside the hollow cylinder 33, slowly causing the saline solution to be output through the micro-hole 39 to the connecting tube 32, and then into the sleeve 31. The sleeve 31 is a flexible tube, causing it to slowly expand. When disassembly is required, the threaded rod 310 is rotated in the opposite direction, causing the first piston block 311, the bellows 312, and the second piston block 313 to move away from the through ring 34. At this time, the elasticity of the sleeve 31 causes the saline solution to enter the hollow cylinder 33 through the connecting tube 32, and then pushes open the positioning plate 37, quickly entering the hollow cylinder 33, making disassembly quick. One end of the connecting tube 32 is fixedly connected to the sleeve 31, and the other end of the connecting tube 32 is fixedly connected to the hollow cylinder 33.

[0027] The lubrication mechanism 2 includes a content cavity 21, which is located on the inner wall of the main tube 1. A connecting tube 22 is provided on the main tube 1. One end of the connecting tube 22 is fixedly connected to the main tube 1, and the other end of the connecting tube 22 is fixedly connected to a spherical container 23. An output hole 24 is provided on the side of the main tube 1 away from the connecting tube 22. Pressing the spherical container 23 causes the lubricating liquid in the spherical container 23 to be output through the connecting tube 22, the content cavity 21, and the output hole 24, acting on the urethra to reduce friction and damage to the urethra during the insertion of the dilator.

[0028] The sleeve 31 is made of medical-grade silicone material, which has good flexibility and biocompatibility. The outer surfaces of the first piston block 311 and the second piston block 313 are equipped with sealing rubber rings to prevent saline leakage. The outer wall of the hollow cylinder 33 is marked with scales to indicate the level of saline solution inside. The hollow cylinder 33 is made of transparent plastic for easy observation of the internal condition. The inner wall of the hollow cylinder 33 is smoothed to reduce the resistance to saline flow. The connecting tube 32 is elastic and can be bent without affecting the delivery of saline solution. The threaded rod 310 is equipped with a rotating handle for easy operation by the user. The surface of the spring 36 is treated with rust prevention to extend its service life.

[0029] In use, the adjustable urethral dilator of this invention has saline solution on the inner walls of the sleeve 31, connecting tube 32, and hollow cylinder 33. Rotating the threaded rod 310 moves the first piston block 311, bellows 312, and second piston block 313 closer to the through ring 34. At this time, the saline solution on the inner wall of the hollow cylinder 33 compresses the connecting tube 32 and the through ring 34, creating a tighter seal. The saline solution on the inner wall of the hollow cylinder 33 can only be slowly output to the connecting tube 32 through the micro-hole 39. High pressure is then created inside the hollow cylinder 33, compressing the air inside the bellows 312 and stopping the rotation of the threaded rod. At time 310, the compressed air inside the bellows 312 also drives the second piston block 313 to squeeze the saline solution inside the hollow cylinder 33, slowly causing the saline solution to be output through the micro-hole 39 to the connecting long tube 32, and then into the sleeve 31. The sleeve 31 is a flexible tube, which causes the sleeve 31 to slowly expand. When disassembly is required, the threaded rod 310 is rotated in the opposite direction to drive the first piston block 311, the bellows 312, and the second piston block 313 to move away from the passing ring 34. At this time, the elasticity of the sleeve 31 causes the saline solution to enter the hollow cylinder 33 through the connecting long tube 32, and then pushes open the positioning plate 37, quickly entering the hollow cylinder 33, making disassembly quick.

[0030] Pressing the spherical container 23 causes the lubricating fluid inside the spherical container 23 to be output through the connecting tube 22, the internal cavity 21, and the output hole 24, acting on the urethra to reduce friction and damage to the urethra during dilation.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable urethral dilator comprising a body tube (1), characterized in that: The main tube (1) is provided with a lubrication mechanism (2) for lubrication before insertion, and the main tube (1) is provided with an expansion mechanism (3) for slowly adjusting the expansion size. The expansion mechanism (3) includes: A sleeve (31) is fixedly connected to the outer wall of the main tube (1); A hollow cylinder (33) is connected to a sleeve pipe (31) via a connecting long pipe (32). A through ring (34) is provided on the inner wall of the hollow cylinder (33). A fixed plate (35) is fixedly connected to the inner wall of the hollow cylinder (33). A spring (36) is provided on the fixed plate (35). One end of the spring (36) is fixedly connected to the fixed plate (35), and the other end of the spring (36) is fixedly connected to a positioning plate (37). A guide rod (38) is fixedly connected to the positioning plate (37). The guide rod (38) slides against the inner wall of the fixed plate (35). The positioning plate (37) is provided with a small hole (39). A threaded rod (310) is threadedly connected to the inner wall of the hollow cylinder (33). A first piston block (311) is rotatably connected to the threaded rod (310). A bellows (312) is provided on the first piston block (311). One end of the bellows (312) is fixedly connected to the first piston block (311), and the other end of the bellows (312) is fixedly connected to a second piston block (313). Both the first piston block (311) and the second piston block (313) are piston-connected to the inner wall of the hollow cylinder (33).

2. An adjustable urethral dilator according to claim 1, wherein: One end of the connecting tube (32) is fixedly connected to the sleeve tube (31), and the other end of the connecting tube (32) is fixedly connected to the hollow cylinder (33).

3. An adjustable urethral dilator according to claim 1, wherein: The lubrication mechanism (2) includes a content cavity (21), which is located on the inner wall of the main tube (1). A connecting tube (22) is provided on the main tube (1). One end of the connecting tube (22) is fixedly connected to the main tube (1), and the other end of the connecting tube (22) is fixedly connected to a spherical container (23). An output hole (24) is provided on the side of the main tube (1) away from the connecting tube (22).

4. An adjustable urethral dilator according to claim 1, wherein: The sleeve (31) is made of medical-grade silicone material, and the outer surfaces of the first piston block (311) and the second piston block (313) are provided with sealing rubber rings.

5. An adjustable urethral dilator according to claim 1, wherein: The hollow cylinder (33) has graduation markings on its outer wall, and the hollow cylinder (33) is made of transparent plastic.

6. An adjustable urethral dilator according to claim 1, wherein: The inner wall of the hollow cylinder (33) is smoothed, and the connecting tube (32) is elastic.

7. An adjustable urethral dilator according to claim 1, wherein: The threaded rod (310) is provided with a rotating handle, and the surface of the spring (36) is treated with rust prevention.

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