Visual urethral dilator

Abstract

The application relates to the field of urethral dilators, and particularly discloses a visual urethral dilator which solves the problems of poor use comfort, easy occurrence of serious urethral false channel complications, inconvenience in uniform urethral dilation and lack of visual function of the prior urethral dilator. The urethral dilator comprises a main pipe rod, an endoscope, a data line, an outer dilating pipe, a water bag layer, a water bag bin, a water storage tray, a water storage bin, a piston, a through hole, a threaded table top, a limiting cylinder, a rotating ring, a circular ring and a connecting column. A driving assembly is arranged on the limiting cylinder. The driving assembly is used for driving the circular ring to move downwards, extruding water in the water storage bin into the water bag bin, and dilating the urethra. A sealing assembly is arranged on the water storage tray. The sealing assembly is used for extruding and sealing or opening the water bag bin in cooperation with the limiting cylinder. A brake assembly is further arranged on the limiting cylinder. The urethral dilator has the visual function, high use comfort, uniform and stable dilation.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of urethral dilators, in particular to a visual urethral dilator. BACKGROUND

[0002] A urethral dilator is a urological surgical instrument used to dilate the urethra to facilitate urinary catheterization or treat urethral stricture. It uses its gradually enlarged shape to gradually open the narrow area inside the urethra, relieving the difficulty in urination caused by abnormal urethral structure. The urethral dilator is usually made of stainless steel or other metal materials, which is strong, durable and has strong dilating ability, and is suitable for more stubborn urethral stricture and long-term urethral dilation, but the patient may have a strong sense of discomfort during use, and the risk of intraoperative and postoperative complications is relatively high.

[0003] The existing urethral dilator is mostly made of metal and arranged in groups, each group having multiple dilating rods with increasing diameters. During actual use, the dilating rods with different diameters need to be inserted into the patient's urethra in order, from small to large, to achieve dilation. This results in the patient's urethra being inserted multiple times with dilating rods of different diameters, causing strong discomfort during use and a long duration. Although the existing gas bag type urethral dilator does not have a visual function, it cannot visually observe the straight tube of the urethra, and the gas bag type urethral dilator is also prone to uneven expansion under pressure.

[0004] Patent No. CN115040764B discloses a "new urethral dilator, comprising: a guide wire, a ball head structure is arranged at the head end of the guide wire, the maximum diameter of the ball head structure is larger than the diameter of the guide wire; an inflatable catheter assembly, comprising a sleeve-shaped film sleeve, the film sleeve is sleeved outside the guide wire and is wound in a containing space, the front end of the film sleeve is adhered to the ball head structure, and the rear end of the film sleeve is provided with an injection port. In the present application, the middle channel structure formed after the film sleeve expands can avoid the problem of damage to the urethra caused by the original hollow dilator. It can ensure that the dilator maintains a small volume during entry and ensures the overall strength. The film sleeve is designed to change the volume structure of the dilator. After the dilator enters the human body and is positioned, the film sleeve can be expanded and dilated to maintain its structure, so that the middle channel remains open, increasing the success rate of urinary catheterization.

[0005] The above technical solution changes the volume structure of the dilator by the film sleeve, which can make the film sleeve expand and dilate after the dilator enters the human body and is positioned, maintain its structure, keep the middle channel open, and increase the success rate of urinary catheterization. However, the film sleeve is difficult to ensure uniform expansion after being pressed, and does not have a visual function. Therefore, a visual urethral dilator is proposed. SUMMARY

[0006] In order to overcome the prior art, the present application provides a visual urethral dilator, which solves the problems of poor comfort, easy to cause serious complications of urethral false passage, and inconvenient to uniformly dilate the urethra, and does not have a visual function.

[0007] In order to solve the above technical problems, the basic technical scheme of the present application is:

[0008] A visual urethral dilator, comprising a main pipe rod, a front end of the main pipe rod is provided with a endoscope, and a data line connected with the endoscope is sleeved in the main pipe rod, an outer side of the main pipe rod is slidably sleeved with an outer expansion pipe, an outer side of the outer expansion pipe is sleeved with a water bag layer, a plurality of water bag compartments are divided in the water bag layer, an upper end of the outer expansion pipe is further connected with a water storage disc, a plurality of water storage compartments are divided in the water storage disc, a piston is slidably and sealingly sleeved in each water storage compartment, a through hole is formed between the water storage compartment and the water bag compartment, a threaded platform is formed at an end of the main pipe rod away from the endoscope, and a limiting cylinder is threadedly sleeved outside the threaded platform to press the upper end of the water storage disc.

[0009] A rotating ring is rotatably sleeved in the limiting cylinder, and a lower end of the rotating ring extends to the lower side of the limiting cylinder and abuts against the upper end of the water storage disc, a circular ring is slidably arranged on the water storage disc, a connecting column is connected between the circular ring and each piston, a driving assembly is installed on the limiting cylinder, the driving assembly is used to drive the circular ring to move downward to extrude water in the water storage compartment into the water bag compartment to dilate the urethra, a sealing assembly is arranged on the water storage disc, the sealing assembly is used to extrude and seal or open the water bag compartment in cooperation with the limiting cylinder, and a brake assembly is further arranged on the limiting cylinder, the brake assembly is used to control the rotation of the rotating ring.

[0010] Preferably, the lower end of the outer expansion pipe is blunt and slidably sleeved outside the main pipe rod, and the lower end of the outer expansion pipe abuts against the rear end of the endoscope.

[0011] Preferably, the driving assembly comprises two telescopic members, a ring frame, two variable frequency motors, a sleeve, a cross key, a lead screw and a cross slot, the two telescopic members are symmetrically installed on the radial sides of the upper end surface of the limiting cylinder, the ring frame is connected to the output ends of the upper sides of the two telescopic members, the two variable frequency motors are symmetrically installed on the radial sides of the ring frame, the sleeve is installed on the output end of the variable frequency motor, one end of the cross key is slidably sleeved in the sleeve and connected with the inner wall of the sleeve through a spring, the other end of the cross key extends to the outside of the sleeve, the lead screw is rotatably connected to the upper end surface of the water storage disc and threadedly sleeved with the circular ring, and the cross slot is formed in the upper end of the lead screw and matched with the cross key.

[0012] Preferably, one end of the lead screw extends away from one side of the ring, and the extending end is T-shaped, and the cross-shaped clamping groove is arranged on the extending end of the lead screw.

[0013] Preferably, one end of each of the connecting columns away from the ring penetrates the corresponding water storage bin and is connected with the piston, and a sliding sealing sleeve is arranged between the connecting column and the water storage bin.

[0014] Preferably, the brake assembly comprises a T-shaped ring groove and a T-shaped brake column, the upper end surface of the rotating ring is provided with a T-shaped ring groove with a T-shaped cross section, the T-shaped brake column is provided with two and arranged on the two radial sides of the T-shaped ring groove, and the upper end of the T-shaped brake column is slidingly penetrated through the upper end surface of the limiting cylinder and connected with the ring frame.

[0015] Preferably, the sealing assembly comprises a ring table, a sliding plate, a sliding frame, a fixed ring one, an annular rubber ring one, and a sleeve ring one, the ring table is sleeved on the outer side surface of the limiting cylinder, the sliding plate is provided with two and symmetrically slidingly arranged on the two radial sides of the water storage disc, the sliding frame is also provided with two and symmetrically slidingly arranged on the two radial sides of the water storage disc, the sliding frame and the sliding plate are rotationally connected with a rotating plate one, the fixed ring one is connected to the lower end of the water storage disc, the annular rubber ring one is sleeved on the side of the fixed ring one close to the water storage disc, the sleeve ring one is sleeved on the side of the annular rubber ring one close to the water storage disc, the sliding frame and the sleeve ring one are rotationally connected with a rotating plate two, and the annular rubber ring one is abuttingly sleeved against the outer side of the water bag layer.

[0016] Preferably, the upper end of the water storage disc is connected with a limiting guide rod, the sliding plate is slidingly sleeved on the outer side of the limiting guide rod, and the sliding plate and the water storage disc are connected with a spring two sleeved on the outer side of the limiting guide rod.

[0017] Preferably, the sliding frame is slidingly sleeved on the sliding rail on each side.

[0018] Preferably, the threaded table surface is further sleeved with a limiting ring, and the side of the limiting ring close to the limiting cylinder is limited and abuttingly contacted with the side of the limiting cylinder, the end of the limiting ring away from the limiting cylinder is sleeved with a fixed ring two, the fixed ring two is sleeved with an annular rubber ring two, the end of the annular rubber ring two away from the fixed ring two is sleeved with a sleeve ring two, and the sleeve ring two is abuttingly contacted with one end of the main pipe rod, and the annular rubber ring two is abuttingly sleeved against the outer side of the data line.

[0019] The beneficial effects of the present application are:

[0020] 1. The technical scheme of the application inserts the main rod into the urethra first, and observes the urethral wall condition through the endoscope installed on the front end of the main rod, then according to the observed urethral wall condition, slides the outer expansion tube outside the main rod, and sends it into the urethra along the path of the main rod until the front end of the outer expansion tube is in contact with the endoscope, and in the process of sending, according to the shooting condition of the endoscope, when passing through the urethral area of inflammation, injury, etc., it is sent in slowly or rotatingly to reduce the re-injury to the corresponding urethral wall area, then the limiting cylinder can be sleeved outside the threaded table, and the end of the water storage tray away from the endoscope is limited, and the limiting ring can also be installed after the limiting cylinder is installed, which realizes the stability of the limiting cylinder through the limiting ring, so that the limiting cylinder can be in contact with the end face of the water storage tray through the rotating ring rotating in it, ensuring the stability of the outer expansion tube, and the outer expansion tube and the water storage tray can also rotate with the rotating ring.

[0021] 2. The technical scheme of the application rotates the water storage tray so that the screw rod thereon can be coaxially corresponding to the sleeve on the limiting cylinder, then controls the contraction of the telescopic part to drive the sleeve to move down, so that the cross-shaped key in the sleeve can be inserted into the cross-shaped slot on the screw rod, and the rotation of the frequency conversion motor can drive the screw rod to rotate, so that the circular ring moves down, and the water in each water storage compartment is squeezed into the water bag compartment, so that the water bag compartment expands, thereby realizing the expansion of the urethra, avoiding the discomfort of using the expansion rod multiple times, and the expansion degree can also be adjusted according to the volume of the squeezed water, which is more flexible to use, and after expansion, the outer expansion tube can also be rotated to ensure that each water bag compartment that is lifted up can uniformly expand the urethral wall, and if it is necessary to limit the rotation of the outer expansion tube, it is only necessary to control the telescopic part to extend and pull the T-shaped brake column to move up to be in contact with the inner wall of the T-shaped ring groove, so as to achieve friction braking.

[0022] 3. The technical scheme of the application can be in contact with the sliding plate through the ring table outside the limiting cylinder when the limiting cylinder is installed, and the sliding plate drives the rotating plate to rotate, pushing the sliding frame to the outside of the circular ring, canceling the limiting and stabilizing of the circular ring by the sliding frame, facilitating the driving of the circular ring to move down, driving the piston to squeeze the water in the water storage compartment into the water bag compartment, and the outward movement of the sliding frame can also drive the rotating plate to rotate, so that the sleeve ring moves up and stretches the annular rubber ring, canceling the squeezing of the water bag layer, ensuring that the piston can smoothly squeeze the water in the water storage compartment into the water bag compartment when the circular ring is controlled to move down, and also ensuring the sealing of the water bag compartment when not in use. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the application;

[0024] Figure 2 It is a sectional view of the side view structure of the application;

[0025] Figure 3It is a cross-sectional view of the side structure of the water storage warehouse of the application;

[0026] Figure 4 It is a cross-sectional view of the structure on the main pipe rod of the application;

[0027] Figure 5 It is a schematic diagram of the related structure on the limiting cylinder of the application;

[0028] Figure 6 It is a cross-sectional view of the structure on the limiting cylinder of the application;

[0029] Figure 7 It is a cross-sectional view of the side structure of the limiting cylinder of the application;

[0030] Figure 8 It is a schematic diagram of the related structure on the water storage disc of the application;

[0031] Figure 9 It is a schematic diagram of the related structure in the water storage disc of the application;

[0032] Figure 10 It is a schematic diagram of the structure of the main pipe rod of the application.

[0033] Explanation of reference signs:

[0034] 1, main pipe rod; 2, endoscope; 3, data line; 4, outer expansion tube; 5, water bag layer; 6, water bag warehouse; 7, water storage disc; 8, water storage warehouse; 9, piston; 10, through hole; 11, threaded table; 12, limiting cylinder; 13, rotating ring; 14, telescopic part; 15, ring frame; 16, variable frequency motor; 17, sleeve; 18, cross key; 19, spring one; 20, ring table; 21, T-shaped ring groove; 22, T-shaped brake column; 23, connecting column; 24, circular ring; 25, screw rod; 26, cross key groove; 27, limiting guide rod; 28, sliding plate; 29, spring two; 30, sliding rail; 31, sliding frame; 32, rotating plate one; 33, fixed ring one; 34, annular rubber ring one; 35, sleeve ring one; 36, rotating plate two; 37, limiting ring; 38, fixed ring two; 39, annular rubber ring two; 40, sleeve ring two. DETAILED DESCRIPTION

[0035] The specific embodiments of the application will be described below with reference to the accompanying drawings Figure 1 to the accompanying drawings Figure 10 The technical solutions in the embodiments of the application are described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the application, not all. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the application.

[0036] Embodiment one:

[0037] As Figures 1-10The application discloses a visual urethral dilator, which comprises a main rod, a front end of the main rod is provided with an endoscope, a data line connected with the endoscope is sleeved in the main rod, an outer expansion tube is sleeved and slid on the outer side of the main rod, a water bag layer is sleeved on the outer side of the outer expansion tube, a plurality of water bag compartments are divided in the water bag layer, a water storage disc is further connected to the upper end of the outer expansion tube, a plurality of water storage compartments are separated in the water storage disc, a piston is slidably and sealingly sleeved in each water storage compartment, a through hole is formed between the water storage compartment and the water bag compartment, a threaded platform is formed at the end of the main rod away from the endoscope, a limiting cylinder for pressing the upper end of the water storage disc is threadedly sleeved on the outer side of the threaded platform.

[0038] The endoscope is a waterproof camera.

[0039] A rotating ring is rotatably sleeved in the limiting cylinder, the lower end of the rotating ring extends to the lower side of the limiting cylinder and abuts against the upper end of the water storage disc, a circular ring is slidably arranged on the water storage disc, a connecting column is connected between the circular ring and each piston, a driving assembly is arranged on the limiting cylinder, the driving assembly is used for driving the circular ring to move downward, so that the water in the water storage compartment is pressed into the water bag compartment, and the urethra is expanded, a sealing assembly is arranged on the water storage disc, the sealing assembly is used for sealing or opening the water bag compartment in cooperation with the limiting cylinder, a brake assembly is further arranged on the limiting cylinder, and the brake assembly is used for controlling the rotation of the rotating ring.

[0040] The lower end of the outer expansion tube is blunt, and is slidably sleeved on the outer side of the main rod, and the lower end of the outer expansion tube abuts against the rear end of the endoscope.

[0041] When the outer expansion tube is installed and used, it can be stably arranged between the endoscope and the rotating ring in the limiting cylinder.

[0042] A limiting ring is further threadedly sleeved on the threaded platform, one side face of the limiting ring and the limiting cylinder abut against each other in position, a second fixing ring is sleeved on the end of the limiting ring away from the limiting cylinder, a second annular rubber ring is sleeved on the second fixing ring, a second sleeve ring is sleeved on the end of the second annular rubber ring away from the second fixing ring, and the second sleeve ring abuts against one end of the main rod, and the second annular rubber ring abuts against the outer side face of the data line.

[0043] So when the limiting cylinder 12 is installed, the outer expansion tube 4 and the water storage disc 7 can also rotate, which can also cause the limiting cylinder 12 to rotate, and after the limiting ring 37 is installed, the above situation can be effectively avoided, and the stability of the limiting cylinder 12 limiting the outer expansion tube 4 and the water storage disc 7 is ensured, and at the same time, when the limiting ring 37 is installed, the sleeve ring two 40 on the limiting ring 37 can abut against the end of the main pipe rod 1 away from the endoscope 2, so that the annular rubber ring two 39 is pressed to be concave, and is pressed against the surface of the data line 3, so that the data line 3 is not excessively pulled and broken during use.

[0044] In specific use, first, the main pipe rod 1 is inserted into the urethra, and the endoscope 2 installed at the front end of the main pipe rod 1 is used to observe the urethral wall, then according to the observed urethral wall, the outer expansion tube 4 is slidably sleeved outside the main pipe rod 1 and is sent into the urethra along the path of the main pipe rod 1 until the front end of the outer expansion tube 4 abuts against the endoscope 2, and during the sending process, according to the shooting of the endoscope 2, when passing through the urethral area of inflammation, injury or the like, the sending is performed in a slow or rotating manner to reduce the re-injury to the corresponding urethral wall area, then the limiting cylinder 12 can be sleeved outside the threaded table top 11 to limit the end of the water storage disc 7 away from the endoscope 2, and at the same time, the limiting ring 37 can be installed after the limiting cylinder 12 is installed, and the limiting ring 37 can stabilize the limiting cylinder 12, so that the limiting cylinder 12 can abut against the end surface of the water storage disc 7 through the rotating ring 13 rotatably arranged in the limiting cylinder 12, so as to stabilize the outer expansion tube 4, and at the same time, the outer expansion tube 4 and the water storage disc 7 can also rotate with the rotating ring 13.

[0045] Embodiment two:

[0046] As shown in Figures 1-10 The application discloses a visual urethral dilator.

[0047] The driving assembly comprises telescopic pieces 14, a ring frame 15, variable frequency motors 16, sleeves 17, cross clamping keys 18, lead screws 25 and cross clamping grooves 26. The two telescopic pieces 14 are symmetrically arranged on the radial sides of the upper end surface of the limiting cylinder 12. The ring frame 15 is connected to the output ends of the two telescopic pieces 14. The two variable frequency motors 16 are symmetrically arranged on the radial sides of the ring frame 15. The sleeves 17 are arranged on the output ends of the variable frequency motors 16. One end of the cross clamping key 18 is slidably sleeved in the sleeve 17 and is connected with the inner wall of the sleeve 17 through a spring one 19. The other end of the cross clamping key 18 extends to the outside of the sleeve 17. The lead screw 25 is rotatably connected to the upper end surface of the water storage disc 7 and is threadedly sleeved with the circular ring 24. The cross clamping groove 26 is arranged on the upper end of the lead screw 25 and is matched with the cross clamping key 18.

[0048] The rotation of the water storage disc 7 enables the upper screw rod 25 to be coaxially corresponding with the sleeve 17 on the limiting cylinder 12, then the telescopic part 14 is controlled to retract, the sleeve 17 is driven to move downwards, the cross-shaped clamping key 18 in the sleeve 17 can be inserted into the cross-shaped clamping groove 26 on the screw rod 25, the variable frequency motor 16 is controlled to rotate, the screw rod 25 is driven to rotate, the circular ring 24 is moved downwards, the water in each water storage bin 8 is pressed into the water bag bin 6, the water bag bin 6 is expanded, and the urethra is expanded, thereby avoiding the discomfort of using the expansion rod for many times, and the expansion degree can be adjusted according to the volume of the pressed water, the use is more flexible, and after expansion, the outer expansion tube 4 is rotated to ensure that each water bag bin 6 that is lifted can uniformly expand the urethra wall.

[0049] The screw rod 25 extends at one end on the side, away from the water storage disc 7, of the circular ring 24, and the extending end is T-shaped, and the cross-shaped clamping groove 26 is arranged on the extending end of the screw rod 25, so that when the cross-shaped clamping key 18 approaches the cross-shaped clamping groove 26, even if the two cannot be directly inserted into each other, the cross-shaped clamping key 18 can be buffered by compressing the spring I 19 and retracting into the sleeve 17, until the cross-shaped clamping key 18 can correspond to the cross-shaped clamping groove 26, and the cross-shaped clamping key 18 will be ejected by the spring I 19 to be inserted into the cross-shaped clamping groove 26.

[0050] The end, away from the circular ring 24, of each connecting column 23 penetrates the corresponding water storage bin 8 and is connected with the piston 9, and the connecting column 23 and the water storage bin 8 are sleeved and sealed to ensure the sealing of the water storage bin 8.

[0051] Embodiment three

[0052] As shown in Figures 1-10 , the application discloses a visual urethral dilator, compared with embodiment two, the structure of the brake assembly is disclosed.

[0053] The brake assembly comprises a T-shaped ring groove 21 and a T-shaped brake column 22, the upper end surface of the rotating ring 13 is provided with a T-shaped ring groove 21 with a T-shaped cross section, the T-shaped brake column 22 is provided with two and arranged on the two radial sides of the T-shaped ring groove 21, and the upper end of the T-shaped brake column 22 is slidably penetrated through the upper end surface of the limiting cylinder 12 and connected with the ring frame 15.

[0054] If the rotation of the outer expansion tube 4 needs to be limited, the T-shaped brake column 22 is only needed to be controlled to extend and pull to move upwards to abut against the inner wall of the T-shaped ring groove 21, so as to be frictionally braked.

[0055] Embodiment four

[0056] As shown in Figures 1-10 Figures 1-10 , the application discloses a visual urethral dilator, compared with embodiment three, the structure of the sealing assembly is disclosed.

[0057] The sealing assembly comprises a ring table 20, a sliding plate 28, a sliding frame 31, a fixed ring 33, a ring-shaped rubber ring 34, a sleeve ring 35, the ring table 20 is sleeved on the outer side of the limiting cylinder 12, the sliding plate 28 is provided with two and symmetrically arranged on the two radial sides of the water storage disc 7, the sliding frame 31 is also provided with two and symmetrically arranged on the two radial sides of the water storage disc 7, the rotating plate 32 is rotatably connected between the sliding frame 31 and the sliding plate 28, the fixed ring 33 is connected to the lower end of the water storage disc 7, the ring-shaped rubber ring 34 is sleeved on the side of the fixed ring 33 close to the water storage disc 7, the sleeve ring 35 is sleeved on the side of the ring-shaped rubber ring 34 close to the water storage disc 7, the rotating plate 36 is rotatably connected between the sliding frame 31 and the sleeve ring 35, and the ring-shaped rubber ring 34 is abutted and sleeved on the outer side of the water bag layer 5.

[0058] The limiting guide rod 27 is connected to the upper end of the water storage disc 7, the sliding plate 28 is sleeved on the outer side of the limiting guide rod 27, and the spring 29 is connected between the sliding plate 28 and the water storage disc 7 and sleeved on the outer side of the limiting guide rod 27.

[0059] The sliding rail 30 is connected to the upper end of the water storage disc 7 along the two radial sides, and the sliding frame 31 is sleeved on the sliding rail 30 on the respective side.

[0060] When the limiting cylinder 12 is installed, the ring table 20 on the outer side of the limiting cylinder 12 can abut against the sliding plate 28, push the sliding plate 28 to slide along the limiting guide rod 27, compress the spring 29, and make the sliding plate 28 drive the rotating plate 32 to rotate, push the sliding frame 31 to the outer side of the circular ring 24, cancel the limiting and stabilizing of the sliding frame 31 on the circular ring 24, facilitate the driving of the circular ring 24 to move downward, drive the piston 9 to extrude the water in the water storage bin 8 into the water bag bin 6, and the outward movement of the sliding frame 31 can also drive the rotating plate 36 to rotate, make the sleeve ring 35 move upward, and stretch the ring-shaped rubber ring 34, cancel the extrusion of the ring-shaped rubber ring 34 on the water bag layer 5, ensure that the piston 9 can extrude the water in the water storage bin 8 into the water bag bin 6 smoothly when the circular ring 24 is controlled to move downward, and also ensure the sealing between the water bag bin 6 and the water storage bin 8 when not in use.

[0061] According to the disclosure and teaching of the above description, those skilled in the art of the present application can also make changes and modifications to the above embodiments. Therefore, the present application is not limited to the specific embodiments disclosed and described above, and some modifications and changes of the present application should also fall within the protection scope of the claims of the present application. In addition, although some specific terms are used in the present specification, these terms are only for convenience of description and do not constitute any limitation on the present application.

Claims

1. A visual urethral dilator, comprising a main rod (1), an endoscope (2) mounted on the front end of the main rod (1), and a data cable (3) connected to the endoscope (2) fitted inside the main rod (1), and an external dilator tube (4) slidably fitted on the outer side of the main rod (1), characterized in that, The outer side of the expansion tube (4) is fitted with a water bladder layer (5), and the water bladder layer (5) is divided into multiple water bladder chambers (6). The upper end of the expansion tube (4) is also connected to a water storage tray (7), and the water storage tray (7) is divided into multiple water storage chambers (8). Each water storage chamber (8) is fitted with a piston (9) in a sliding seal, and a through hole (10) is opened between the water storage chamber (8) and the water bladder chamber (6). The end of the main rod (1) away from the endoscope (2) is provided with a threaded platform (11), and a limiting cylinder (12) is threaded on the outer side of the threaded platform (11) to press the upper end of the water storage tray (7). The limiting cylinder (12) is fitted with a rotating ring (13), and the lower end of the rotating ring (13) extends to the lower side of the limiting cylinder (12) and abuts against the upper end of the water storage tray (7). A circular ring (24) is slidably arranged on the water storage tray (7). A connecting column (23) is connected between the circular ring (24) and each piston (9). A driving assembly is installed on the limiting cylinder (12). The driving assembly is used to drive the circular ring (24) to move down and squeeze the water in the water storage tank (8) into the water bladder tank (6) to expand the urethra. A sealing assembly is provided on the water storage tray (7). The sealing assembly is used to cooperate with the limiting cylinder (12) to squeeze and seal or open the water bladder tank (6). A braking assembly is also provided on the limiting cylinder (12). The braking assembly is used to control the rotation of the rotating ring (13).

2. The visual urethral dilator according to claim 1, characterized in that, The lower end of the expansion tube (4) is blunt and is fitted and slidably sleeved on the outside of the main tube rod (1), and the lower end of the expansion tube (4) abuts against the rear end of the endoscope (2).

3. The visual urethral dilator according to claim 1, characterized in that, The drive assembly includes a telescopic component (14), a ring frame (15), a variable frequency motor (16), a sleeve (17), a cross-shaped locking key (18), a lead screw (25), and a cross-shaped locking groove (26). Two telescopic components (14) are symmetrically mounted on the radial sides of the upper end face of the limiting cylinder (12). The ring frame (15) is connected to the output ends on the upper sides of the two telescopic components (14). Two variable frequency motors (16) are symmetrically mounted on the radial sides of the ring frame (15). The sleeve (17), cross-shaped locking key (18), lead screw (25), and cross-shaped locking groove (26) are also present. 7) Installed at the output end of the variable frequency motor (16), one end of the cross key (18) is slidably sleeved in the sleeve (17), and a spring (19) is connected between it and the inner wall of the sleeve (17). The other end of the cross key (18) extends to the outside of the sleeve (17). The screw (25) is rotatably connected to the upper end face of the water storage pan (7) and threadedly sleeved with the ring (24). The cross slot (26) is opened at the upper end of the screw (25) and is inserted in cooperation with the cross key (18).

4. A visual urethral dilator according to claim 3, characterized in that, One end of the lead screw (25) extends on the side of the ring (24) away from the water storage pan (7), and the extended end is T-shaped. The cross groove (26) is opened on the extended end of the lead screw (25).

5. A visual urethral dilator according to claim 3, characterized in that, Each of the connecting posts (23) has one end away from the ring (24) that passes through its corresponding water storage tank (8) and is connected to the piston (9), and the connecting post (23) and the water storage tank (8) are slidably sealed together.

6. A visual urethral dilator according to claim 3, characterized in that, The braking assembly includes a T-shaped annular groove (21) and a T-shaped brake pin (22). The upper end face of the rotating ring (13) is provided with a T-shaped annular groove (21) with a T-shaped cross section. There are two T-shaped brake pins (22), which are respectively arranged on the radial sides of the T-shaped annular groove (21). The upper end of the T-shaped brake pin (22) slides through the upper end face of the limiting cylinder (12) and is connected to the ring frame (15).

7. A visual urethral dilator according to claim 1, characterized in that, The sealing assembly includes a ring platform (20), a sliding plate (28), a sliding frame (31), a fixing ring (33), an annular rubber ring (34), and a collar (35). The ring platform (20) is fitted onto the outer side of the limiting cylinder (12). Two sliding plates (28) are provided and symmetrically slidably disposed on both radial sides of the water storage pan (7). Two sliding frames (31) are also provided and symmetrically slidably disposed on both radial sides of the water storage pan (7). The sliding frames (31) are positioned between the sliding plates (28) and the sliding plate (28). A rotating plate (32) is rotatably connected. The fixing ring (33) is connected to the lower end of the water storage pan (7). The annular rubber ring (34) is fitted on the side of the fixing ring (33) near the water storage pan (7). The collar (35) is fitted on the side of the annular rubber ring (34) near the water storage pan (7). A rotating plate (36) is rotatably connected between the sliding frame (31) and the collar (35). The annular rubber ring (34) fits against the outer side of the water bladder layer (5).

8. A visual urethral dilator according to claim 7, characterized in that, The upper end of the water storage pan (7) is connected to a limiting guide rod (27), and the sliding plate (28) is slidably sleeved on the outside of the limiting guide rod (27). A spring (29) sleeved on the outside of the limiting guide rod (27) is connected between the sliding plate (28) and the water storage pan (7).

9. A visual urethral dilator according to claim 7, characterized in that, The water storage pan (7) is connected to slide rails (30) on both sides along the radial direction, and the slide frame (31) is slidably sleeved on the slide rail (30) on its respective side.

10. A visual urethral dilator according to claim 1, characterized in that, A limiting ring (37) is threadedly fitted on the threaded platform (11), and the limiting ring (37) and the limiting cylinder (12) are in contact with each other on one side for limiting and limiting. A fixing ring (38) is fitted on the end of the limiting ring (37) away from the limiting cylinder (12). An annular rubber ring (39) is fitted on the fixing ring (38). A collar (40) is fitted on the end of the annular rubber ring (39) away from the fixing ring (38). The collar (40) is in contact with one end of the main rod (1). The annular rubber ring (39) is fitted and in contact with the outer side of the data cable (3).

Images