Urethra administration device for urinary surgery

Abstract

The invention belongs to the technical field of medical instruments, and particularly discloses a urinary surgery urethra dosing device which comprises a cutting rod, a protruding pipe is fixed to the top of the cutting rod, an inner hole cavity penetrating to the bottom is formed in the cutting rod, the inner hole cavity extends upwards into the protruding pipe, a guide rod is arranged in the inner hole cavity, and the guide rod is connected with the protruding pipe. According to the invention, the cutting rod is inserted into the urethra until the top of the cutting rod is inserted into the bladder, then the flushing device is conducted, the bladder of a patient is flushed, the handle block is rotated after flushing, and the cutting rod is inserted into the urethra until the top of the cutting rod is inserted into the bladder. The flushing device is closed, the medicine applying assembly and the cleaning assembly are opened at the same time, then the cutting rod is pulled outwards, in the pulling process, yellow sticky secretions secreted on the urethral wall of the patient are scraped off through the cleaning assembly, and meanwhile the medicine applying assembly smears liquid medicine on the cleaned urethral wall of the patient.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a urethral delivery device for urological surgery. Background Technology

[0002] The Department of Urology is a hospital department that mainly diagnoses and treats diseases of the "surgical" part of the urinary system. It mainly treats various urinary diseases. When patients have urinary tract infections or urinary system inflammations, medication can be applied directly to the affected area to achieve a fast and good treatment effect.

[0003] Currently, when treating patients with urethritis, medication needs to be applied directly to the urethral wall. However, patients with urethritis often secrete a thick, yellow discharge from the urethral wall, which adheres to the urethral wall and has a foul odor. This prevents the applied medication from directly reaching the urethral wall, resulting in a decrease in the therapeutic effect of the medication. Summary of the Invention

[0004] In order to solve the problems existing in the prior art, the present invention provides a urethral drug delivery device for urology.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a urethral drug delivery device for urology, comprising a cutting rod, a protruding tube fixed to the top of the cutting rod, an inner cavity extending to the bottom of the cutting rod, the inner cavity extending upward into the interior of the protruding tube, a guide rod disposed within the inner cavity, the outer surface of the guide rod slidingly sealing against the inner wall of the inner cavity, a drug application component disposed at the middle of the outer surface of the cutting rod, a flushing device disposed near the top of the outer surface of the cutting rod, an annular notch formed on the outer surface of the cutting rod, a cleaning component disposed on the inner top surface of the annular notch, and a drainage channel formed on the outer surface of the cutting rod, one end of the drainage channel penetrating into the interior of the annular notch, and the other end extending to near the bottom edge of the cutting rod;

[0006] An L-shaped opening is provided between the inner walls on both sides of the inner cavity near the bottom edge. A handle block is fixed to the bottom of the guide rod, and sliders are fixed to the outer surfaces on both sides of the guide rod. The two sliders are correspondingly slidably engaged inside the L-shaped opening.

[0007] Preferably, the rinsing device includes a water spray pipe fixed to the bottom of the handle block. A diffusion chamber is formed inside the guide rod near the top edge. The top of the water spray pipe extends through to the bottom surface of the diffusion chamber. Water outlets extending to the outside are formed on both sides of the inner wall of the diffusion chamber. Spray nozzles extending to the inside are formed on both sides of the outer surface of the convex tube. The two spray nozzles correspond to the water outlets. The guide rod can be aligned and connected when sliding and can be offset and closed when rotating.

[0008] Preferably, the cutting rod has an annular cavity near the top, the inner side of the annular cavity is connected to the inner hole cavity, and the outer surface of the cutting rod has a plurality of elongated openings that penetrate into the annular cavity at equal intervals along the circumferential direction.

[0009] Preferably, the outer surface of the guide rod has an annular opening, and a drain pipe is fixed to one side of the bottom of the handle block. One end of the drain pipe extends through the bottom surface of the annular opening. The annular opening is located on one side of the bottom of the annular cavity and is in communication with the annular cavity.

[0010] Preferably, the application assembly includes multiple ball bearings, and the outer surface of the cutting rod is provided with multiple spherical grooves at equal intervals along the circumferential direction. The inner walls of the multiple spherical grooves are provided with multiple fine channels at equal intervals. The multiple ball bearings are correspondingly rolled in the spherical grooves. The side wall of the cutting rod is provided with an annular flat cavity. The bottom surface of the multiple spherical grooves is provided with bridging holes, and one end of each of the multiple bridging holes extends into the annular flat cavity.

[0011] Preferably, the inner wall of the inner cavity has a connecting port that extends into the annular flat cavity. The guide rod has a bend channel inside. The top end of the bend channel extends to the outer surface of the guide rod and is located on one side of the connecting port. The bottom end of the bend channel extends to the other side of the bottom of the handle block. An injection tube is provided on the outer side of the handle block. The bottom end of the bend channel extends to the bottom of the handle block, forming an external threaded interface on the handle block. The injection tube is connected to the outlet of the bend channel on the handle block.

[0012] Preferably, the cleaning component includes an umbrella-shaped silicone capsule, the top of which is fixed to the inner top surface of an annular notch and can expand by filling with liquid. The insert rod has an annular adjustment cavity inside, the inner wall of which is hexagonal near the upper part, and the inner side of which is open at the middle and communicates with the inner cavity. The inner wall of the umbrella-shaped silicone capsule has multiple through holes at equal intervals near the top edge, and all of the through holes extend into the interior of the annular adjustment cavity near the top edge.

[0013] Preferably, the annular adjustment cavity is provided with a sealing pad for internal sliding sealing. The outer surface of the sealing pad is in sliding sealing contact with the hexagonal inner wall of the upper part of the annular adjustment cavity. An annular ring is fixed to the bottom of the sealing pad.

[0014] Preferably, magnets are embedded at the bottom of the annular ring near both sides, and wedge-shaped openings are formed at the bottom of the annular ring near both front and rear sides, with one inner wall of each wedge-shaped opening being inclined.

[0015] Preferably, a push ring is provided in the middle section of the annular adjustment cavity. A wedge block is fixed to the top of the push ring near both the front and rear sides. Both wedge blocks are located inside the wedge opening, and one side of each wedge block is in contact with the inclined surface inside the wedge opening. The bottom inner side of the push ring is fixed to the outer surface of the guide rod. A spring is fixed to the bottom of the push ring, and the bottom of the spring slides against the bottom surface of the annular adjustment cavity.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] This invention, by setting an annular notch, a cleaning component, and a drainage channel structure, can simultaneously scrape away yellow, viscous secretions from the urethral wall when the medication is pulled out, and then drain them outward through the drainage channel, thus avoiding the secretions adhering to and blocking the medication.

[0018] By using the cleaning components in conjunction with the drainage channel, odorous secretions can be quickly removed, keeping the drug delivery route clean and avoiding odor contamination and inadequate cleaning.

[0019] By linking the cleaning component, the medication application component, and the guide rod, the system achieves cleaning before medication application, allowing the medication to act directly on the urethral mucosa and preventing a decrease in drug efficacy. Attached Figure Description

[0020] Figure 1 This invention provides a three-dimensional structural diagram of one side of a urethral drug delivery device for urological use;

[0021] Figure 2 This invention provides a three-dimensional structural diagram of the other side of a urinary tract drug delivery device.

[0022] Figure 3 This invention provides a cross-sectional three-dimensional structural diagram of a urinary tract drug delivery device.

[0023] Figure 4 This invention provides a cross-sectional three-dimensional structural diagram of the insertion rod in a urinary tract drug delivery device.

[0024] Figure 5 This invention provides a partial three-dimensional structural diagram of the guide rod in a urinary tract drug delivery device.

[0025] Figure 6 This invention provides a partial cross-sectional three-dimensional structural diagram of the guide rod in a urinary tract drug delivery device;

[0026] Figure 7 This invention provides a bottom-view three-dimensional structural diagram of the annular ring and push ring in a urinary tract drug delivery device;

[0027] Figure 8This invention provides a front-view three-dimensional structural diagram of the annular ring and push ring in a urinary tract drug delivery device.

[0028] Figure 9 This invention provides a side-view three-dimensional structural diagram of a urethral drug delivery device for urology.

[0029] Figure 10 For the present invention Figure 3 A magnified view of a portion of point A in the middle;

[0030] Figure 11 For the present invention Figure 3 A magnified view of a portion of point B in the middle;

[0031] Figure 12 For the present invention Figure 4 A magnified view of a portion of point C.

[0032] In the diagram: 1. Insertion rod; 2. Handle block; 3. Umbrella-shaped silicone capsule; 4. Convex tube; 5. Guide rod; 6. Nozzle; 7. Long strip nozzle; 8. Drainage channel; 9. Injection tube; 10. Water spray pipe; 11. Drainage pipe; 12. Bend; 13. Inner cavity; 14. Diffusion cavity; 15. Magnet; 16. Annular cavity; 17. Annular opening; 18. Annular adjustment cavity; 19. L-shaped opening; 20. Water outlet; 21. Sealing pad; 22. Annular ring; 23. Push ring; 24. Spring; 25. Wedge-shaped opening; 26. Wedge block; 27. Annular flat cavity; 28. Ball bearing; 29. ​​Bridging hole; 30. Spherical groove; 31. Narrow channel; 32. Slider; 33. Through-hole; 34. Annular notch; 35. Connection port. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figure 1-12The present invention provides a technical solution: a urethral drug delivery device for urology, including a cutting rod 1, a protruding tube 4 fixed to the top of the cutting rod 1, an inner cavity 13 extending to the bottom of the cutting rod 1, the inner cavity 13 extending upward into the interior of the protruding tube 4, a guide rod 5 disposed in the inner cavity 13, the outer surface of the guide rod 5 slidingly sealing against the inner wall of the inner cavity 13, a drug application component disposed in the middle of the outer surface of the cutting rod 1, a flushing device disposed near the top of the outer surface of the cutting rod 1, an annular notch 34 opened on the outer surface of the cutting rod 1, a cleaning component disposed on the inner top surface of the annular notch 34, and a drainage channel 8 opened on the outer surface of the cutting rod 1, one end of the drainage channel 8 extending into the interior of the annular notch 34, and the other end extending to the bottom edge near the cutting rod 1;

[0035] L-shaped openings 19 are provided on both sides of the inner wall of the inner cavity 13 near the bottom edge. A handle block 2 is fixed to the bottom of the guide rod 5. Slider blocks 32 are fixed on both sides of the outer surface of the guide rod 5. The two sliders 32 are correspondingly slidably engaged inside the L-shaped openings 19.

[0036] The desired effect is as follows: Insert the insertion rod 1 into the urethra until the top of the insertion rod 1 is inserted into the bladder. Then, push the handle block 2 into the insertion rod 1, causing the top of the guide rod 5 to slide until it is flush with the top of the protruding tube 4. At this time, the slider 32 slides from one end of the L-shaped opening 19 to the bend, activating the flushing device and flushing the patient's bladder. After flushing, rotate the handle block 2 to slide the slider 32 into the bend of the L-shaped opening 19, closing the flushing device. To close the flushing device, rotate the guide rod 5 to move the slider 32 into the bend of the L-shaped opening 19. The L-shaped opening 19 rotates inward, and the water outlet 20 is misaligned with the nozzle 6. To open the cleaning component, the guide rod 5 needs to be pushed, causing the push ring 23 to move upward and push the annular ring 22. The guide rod 5 is fixed by the locking constraint of the slider 32 and the transverse bending section of the L-shaped opening 19, and is also positioned by the magnet 15 to prevent it from resetting during pulling. Then, the insertion rod 1 is pulled outward. During the pulling process, the cleaning component scrapes away the yellow viscous secretions secreted on the patient's urethral wall, while the medication application component applies medication to the cleaned urethral wall.

[0037] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 11As shown, the rinsing device includes a water spray pipe 10, which is fixed to the bottom of the handle block 2. A diffuser cavity 14 is formed inside the guide rod 5 near the top edge. The top of the water spray pipe 10 extends through to the bottom surface of the diffuser cavity 14. Water outlets 20 extending to the outside are formed on both sides of the inner wall of the diffuser cavity 14. Spray nozzles 6 extending to the inside are formed on both sides of the outer surface of the convex tube 4 at an angle. The two spray nozzles 6 correspond to the positions of the water outlets 20. The guide rod 5 can be aligned and connected when sliding and can be misaligned when rotating. The cutting rod 1 is closed. An annular cavity 16 is formed near the top inside the cutting rod 1. The inner side of the annular cavity 16 is connected to the inner cavity 13. Multiple elongated openings 7 are formed at equal intervals along the circumferential direction on the outer surface of the cutting rod 1, which penetrate into the annular cavity 16. An annular opening 17 is formed on the outer surface of the guide rod 5. A drain pipe 11 is fixed on one side of the bottom of the handle block 2. One end of the drain pipe 11 penetrates into the bottom surface of the annular opening 17. The annular opening 17 is located on one side of the bottom of the annular cavity 16 and is connected to the annular cavity 16.

[0038] The desired effect is as follows: the insertion rod 1 is inserted into the urethra until its top reaches the bladder. Then, the handle block 2 is pushed into the insertion rod 1, causing the top of the guide rod 5 to slide until it is flush with the top of the protruding tube 4. Initially, the outlet 20 is located below the nozzle 6 and is offset from it, not connected. The annular opening 17 is located below the inner side of the annular cavity 16, offset from it, and not connected. As the handle block 2 is pushed into the insertion rod 1, the guide rod 5 slides upward, causing the annular opening 17 and the outlet 20 to slide upward. When the slider 32 slides from one end of the L-shaped opening 19... At the bend, the outlet 20 slides to the side of the nozzle 6, and the outlet 20 and the nozzle 6 are aligned and connected. At the same time, the annular opening 17 and the annular cavity 16 are aligned and connected. The external flushing water flows into the diffuser cavity 14 through the spray pipe 10, and then sprays out from the nozzle 6 to flush and clean the patient's bladder. During flushing, the annular opening 17 slides to the bottom side of the annular cavity 16 and is connected to the annular cavity 16. At this time, the water after flushing the patient's bladder can flow into the annular cavity 16 through the elongated opening 7, and finally enter the annular opening 17 and be discharged through the drain pipe 11.

[0039] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 9 , Figure 10 , Figure 11 and Figure 12As shown, the application assembly includes multiple ball bearings 28. Multiple spherical grooves 30 are equidistantly spaced along the circumferential direction on the outer surface of the insertion rod 1. Multiple fine channels 31 are equidistantly spaced on the inner walls of each of the spherical grooves 30. The ball bearings 28 are correspondingly rolled within the spherical grooves 30. An annular flat cavity 27 is formed inside the side wall of the insertion rod 1. Bridging holes 29 are formed on the inner bottom surface of each of the spherical grooves 30. One end of each bridging hole 29 penetrates into the annular flat cavity 27. The inner cavity 13... The front inner wall has a connecting port 35 that extends into the annular flat cavity 27. The guide rod 5 has a bending channel 12 inside. The top end of the bending channel 12 extends into the outer surface of the guide rod 5 and is located on one side of the connecting port 35. The bottom end of the bending channel 12 extends into the other side of the bottom of the handle block 2. The outer side of the handle block 2 is provided with an injection tube 9. The bottom end of the bending channel 12 extends into the bottom of the handle block 2, forming an external thread interface on the handle block 2. The injection tube 9 is connected to the outlet of the bending channel 12 on the handle block 2.

[0040] The effect is that the medicine is injected into the bend channel 12 through the injection tube 9, and then transported to the annular flat cavity 27 through the bend channel 12. Then the medicine is transported to the spherical groove 30 through the bridging hole 29 and discharged through the fine flow channel 31 to be coated on the ball 28. During the process of pulling the insertion rod 1, the ball 28 rolls on the urethral wall to coat the medicine on the urethral wall.

[0041] like Figure 1-10As shown, the cleaning assembly includes an umbrella-shaped silicone capsule 3. The top of the umbrella-shaped silicone capsule 3 is fixed to the inner top surface of the annular notch 34 and can expand by filling with liquid. An annular adjustment cavity 18 is provided inside the insertion rod 1. The inner wall of the annular adjustment cavity 18 is hexagonal near the upper part. The hexagonal cross-section is used to prevent the sealing pad 21 from rotating, ensuring that it only slides axially and does not rotate. The inner side of the annular adjustment cavity 18 is open at the middle and communicates with the inner cavity 13. Multiple through holes 33 are equidistantly provided on the inner wall of the umbrella-shaped silicone capsule 3 near the top edge. All the through holes 33 penetrate into the annular cavity 14. Near the top edge of the annular adjustment cavity 18, a sealing pad 21 is provided for sliding sealing. A medical rubber O-ring is embedded on the outer surface of the sealing pad 21, forming a sliding seal with the hexagonal inner wall of the upper part of the annular adjustment cavity 18. The outer surface of the sealing pad 21 is in sliding seal contact with the hexagonal inner wall of the upper part of the annular adjustment cavity 18. An annular ring 22 is fixed at the bottom of the sealing pad 21. Magnets 15 are embedded near the two sides of the bottom of the annular ring 22. Wedge-shaped openings 2 are provided near the front and rear sides of the bottom of the annular ring 22. 5. The inner walls of one side of both wedge-shaped openings 25 are inclined, and the inclination angle can be set to 10°-15° to form a self-locking inclined surface; the bottom of the annular ring 22 is provided with wedge-shaped openings 25 near the front and rear edges, and the inner walls of one side of both wedge-shaped openings 25 are inclined. The annular adjustment cavity 18 is provided with a push ring 23 in the middle section. The top of the push ring 23 is fixed with wedge-shaped blocks 26 near the front and rear sides. Both wedge-shaped blocks 26 are located inside the wedge-shaped openings 25, and one side of each wedge-shaped block 26 is in contact with the inclined surface inside the wedge-shaped opening 25. In the initial state, the annular ring 22 is magnetically attracted to the wedge-shaped openings 25. 2. Maintain an initial distance of 3-5mm between the push ring 23 and the wedge block 26 to prevent accidental contact between the wedge block 26 and the wedge opening 25 during transportation or insertion, which could cause the umbrella-shaped silicon capsule 3 to expand prematurely. The inner bottom of the push ring 23 is fixed to the outer surface of the guide rod 5. A spring 24 is fixed to the bottom of the push ring 23. The bottom of the spring 24 slides against the bottom surface of the annular adjustment cavity 18. The bottom of the spring 24 abuts against the inner bottom surface of the annular adjustment cavity 18. When the guide rod 5 rotates, the lower end of the spring 24 is in rotatable sliding contact with the bottom surface of the cavity. Its torsional resistance is less than the inclined thrust of the wedge block 26, ensuring that the rotation operation is not affected.

[0042] The effect is that when the guide rod 5 rotates, it drives the push ring 23 to rotate, and the push ring 23 rotates, which in turn drives the wedge block 26 to rotate. With the cooperation of the wedge block 26 and the inclined surface of the wedge opening 25, the annular ring 22 is pushed upward. The rotational motion is converted into linear motion using the spiral upward principle, causing the sealing pad 21 to slide towards the top surface inside the annular adjustment cavity 18. Since the inclination angle of the wedge opening 25 is less than the friction angle, a self-locking mechanism is formed. Furthermore, when the annular ring 22 moves to the working position, the magnet 15 further engages with the push ring 23 to provide holding force, thus keeping the annular ring 22 in place during subsequent pulling and pulling processes. The position is fixed and will not fall back, thus allowing the liquid inside the annular adjustment cavity 18 to further fill the umbrella-shaped silicone capsule 3, so that the umbrella-shaped silicone capsule 3 is in a full state with a certain degree of hardness, so that the umbrella-shaped silicone capsule 3 fits against the urethral wall, but does not excessively compress the urethral wall. During the pulling of the insertion rod 1, the viscous liquid on the urethral wall can be scraped off through the edge of the umbrella-shaped silicone capsule 3; when the guide rod 5 rotates, it will drive the push ring 23 to rotate, and the push ring 23 will drive the wedge block 26 to rotate. With the cooperation of the wedge block 26 and the inclined surface of the wedge opening 25, the annular ring 22 is pushed upward, so that the ring... The liquid inside the adjusting cavity 18 further fills the umbrella-shaped silicone capsule 3, making the umbrella-shaped silicone capsule 3 a full and rigid state. During the pulling of the insertion rod 1, the viscous liquid on the urethral wall can be scraped off through the edge of the umbrella-shaped silicone capsule 3. The push ring 23 is made of commercially available 430 stainless steel, which can be magnetically attracted by the magnet 15. When the wedge block 26 slides back into the wedge opening 25, the ring ring 22 can slide towards the top of the push ring 23 under the attraction of the magnet 15, which helps to house the wedge block 26. In the orifice 25, the bottom of the spring 24 is not fixedly installed but is in a free state and slides against the inner bottom surface of the annular adjustment cavity 18. Therefore, when the guide rod 5 rotates, it will not cause mechanical interference. Furthermore, the inner wall of the annular adjustment cavity 18 has a hexagonal cross-section near the upper part. The hexagonal cross-section can prevent the sealing pad 21 from rotating. When the guide rod 5 slides upward, the push ring 23 moves upward and directly pushes the annular ring 22 upward through the top of the wedge block 26, thereby causing the sealing pad 21 to move upward and press the liquid into the umbrella-shaped silicone capsule 3 to initially expand and block the urethra.

[0043] Working principle: When using this device, the injection tube 9 is threaded to the bottom of the bend 12 on the handle block 2. A Luer connector or standard thread is used at the connection to ensure a leak-proof seal. The bottom of the water spray pipe 10 is connected to the external water supply pipe, and the bottom of the drain pipe 11 is connected to the external drain hose. Liquid is filled between the umbrella-shaped silicone capsule 3 and the top of the sealing pad 21 inside the annular adjustment cavity 18. This liquid can be physiological saline or medical silicone oil. The outer surface of the sealing pad 21 slides and seals against the inner wall of the annular adjustment cavity 18. Initially, the umbrella-shaped silicone capsule 3 is housed inside the annular recess 34, the slider 32 is located at the bottom of the L-shaped opening 19, and the water outlet 20 is located below the nozzle 6. The water outlet 20 is not connected to the nozzle 6. 17 is located below one side of the annular cavity 16. The annular opening 17 is not connected to the annular cavity 16. One end of the top of the bend 12 is located below one side of the annular flat cavity 27. Insert the insertion rod 1 into the urethra until the top of the insertion rod 1 is inserted into the bladder. Push the handle block 2 towards the insertion rod 1 (i.e., push it towards the insertion rod 1, so that the guide rod 5 slides upward relative to the insertion rod 1) until the slider 32 slides to the bend of the L-shaped opening 19. At this time, the water outlet 20 slides to the side of the nozzle 6 and is connected to the nozzle 6. The external flushing water can enter the diffuser cavity 14 through the water spray pipe 10 and then spray out from the nozzle 6 to flush and clean the patient's bladder. At the same time, when the guide rod 5 slides upward, it will drive the push ring 23 to push the annular ring 22 and the sealing pad. 21 slides towards the top surface inside the annular adjustment cavity 18. At this time, the direct contact between the top of the wedge block 26 and the bottom surface of the annular ring 22 pushes the annular ring 22, which is temporarily freed from magnetic constraint and moves upward synchronously with the push ring 23. This pushes the liquid inside the annular adjustment cavity 18 into the umbrella-shaped silicone capsule 3, so that the umbrella-shaped silicone capsule 3 is in a semi-full state and blocks and adheres to the patient's urethral wall, preventing water from flowing out of the patient's urethra during flushing. At this time, the filling volume is 50% of the total capacity. When the guide rod 5 slides upward, the top of the bend 12 slides to one side of the annular flat cavity 27, and the annular opening 17 slides to one side of the bottom of the annular cavity 16 and communicates with the annular cavity 16. At this time, the water after flushing the patient's bladder can flow into the annular cavity 16 through the elongated opening 7 and finally enter the annular opening 17. After the sewage pipe 11 is discharged and cleaned, the slider 32 is rotated to one end of the bend in the L-shaped opening 19 by rotating the handle block 2 (rotating about 90°). Under the elastic force of the spring 24, the slider 32 can generate downward pressure inside the L-shaped opening 19, thereby constraining the slider 32 and the L-shaped opening 19, thus limiting the guide rod 5. When rotating, the two water outlets 20 on the guide rod 5 are misaligned with the nozzle 6. At this time, the water outlets 20 are in a cut-off state with the inner wall of the convex pipe 4. The top of the bend 12 rotates to the position opposite to the connecting port 35, connecting with it. When the guide rod 5 rotates, it will drive the push ring 23 to rotate. When the push ring 23 rotates, it will drive the wedge block 26 to rotate. With the cooperation of the wedge block 26 and the inclined surface of the wedge opening 25, the ring 22 is pushed upward.The liquid inside the annular regulating cavity 18 is further filled into the umbrella-shaped silicone capsule 3, bringing it to a full and rigid state. At this point, the wedge block 26 and the wedge opening 25 form a self-locking mechanism, and the magnet 15 and the push ring 23 are attracted to maintain their position, ensuring that the capsule will not fall back during subsequent drug delivery. Simultaneously, the insertion rod 1 is pulled outwards while the injection tube 9 is squeezed, delivering the drug solution inside the injection tube 9 through the bend channel 12 into the annular flat cavity 27. The medication is delivered through the bridging hole 29 to the spherical groove 30 and discharged through the narrow channel 31 onto the ball bearing 28. During the withdrawal of the insertion rod 1, the ball bearing 28 rolls against the urethral wall, applying the medication directly to it. Furthermore, when the insertion rod 1 is withdrawn, the edge of the umbrella-shaped silicone capsule 3 scrapes away viscous fluid from the urethral wall. After scraping, the fluid is discharged from the patient's urethral opening through the drainage channel 8. This allows the ball bearing 28 to directly apply the medication to the urethral wall during application.

[0044] After use, rotate the handle block 2 in the opposite direction to return the slider 32 to the vertical section of the L-shaped opening 19, slide the guide rod 5 downward to reset, the push ring 23 moves down, and the annular ring 22 moves down under the combined action of gravity, the attraction force of the magnet 15 and the push ring 23, and the restoring force of the spring 24. The sealing pad 21 slides down accordingly, and the liquid in the umbrella-shaped silicone capsule 3 flows back to the annular adjustment cavity 18 through the through-hole 33, causing the umbrella-shaped silicone capsule 3 to retract into the annular recess 34 (returning to the initial storage state), making it easy to remove the device from the urethra.

[0045] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A urological urethral drug delivery device, characterized in that, The device includes a cutting rod (1), a protruding tube (4) fixed to the top of the cutting rod (1), an inner cavity (13) extending to the bottom of the cutting rod (1), the inner cavity (13) extending upward into the inside of the protruding tube (4), a guide rod (5) provided in the inner cavity (13), the outer surface of the guide rod (5) slidingly sealing against the inner wall of the inner cavity (13), a medicine application component provided in the middle of the outer surface of the cutting rod (1), a flushing device provided near the top of the outer surface of the cutting rod (1), an annular notch (34) provided on the outer surface of the cutting rod (1), a cleaning component provided on the top surface inside the annular notch (34), and a drainage channel (8) provided on the outer surface of the cutting rod (1), one end of the drainage channel (8) extending into the inside of the annular notch (34), and the other end extending to the bottom edge near the cutting rod (1). L-shaped openings (19) are provided on both sides of the inner wall of the inner cavity (13) near the bottom edge. A handle block (2) is fixed to the bottom of the guide rod (5). Slider blocks (32) are fixed on both sides of the outer surface of the guide rod (5). The two sliders (32) are correspondingly slidably engaged inside the L-shaped openings (19).

2. The urological urethral drug delivery device according to claim 1, characterized in that: The flushing device includes a water spray pipe (10), which is fixed to the bottom of the handle block (2). A diffusion cavity (14) is provided inside the guide rod (5) near the top edge. The top of the water spray pipe (10) extends through to the bottom surface of the diffusion cavity (14). Both sides of the inner wall of the diffusion cavity (14) are provided with water outlets (20) extending to the outside. Both sides of the outer surface of the convex tube (4) are provided with nozzles (6) extending to the inside. The two nozzles (6) correspond to the positions of the water outlets (20). When the guide rod (5) slides, it can be aligned and connected. When it rotates, it can be misaligned and closed.

3. A urological urethral drug delivery device according to claim 1, characterized in that: The cutting rod (1) has an annular cavity (16) near the top inside. The inner side of the annular cavity (16) is connected to the inner hole cavity (13). The outer surface of the cutting rod (1) has multiple elongated openings (7) that penetrate into the annular cavity (16) at equal intervals along the circumferential direction.

4. A urological urethral drug delivery device according to claim 3, characterized in that: The outer surface of the guide rod (5) is provided with an annular opening (17). A drain pipe (11) is fixed on one side of the bottom of the handle block (2). One end of the drain pipe (11) extends through the bottom surface of the annular opening (17). The annular opening (17) is located on one side of the bottom of the annular cavity (16) and is connected to the annular cavity (16).

5. A urological urethral drug delivery device according to claim 1, characterized in that: The application assembly includes multiple ball bearings (28). The outer surface of the cutting rod (1) is provided with multiple spherical grooves (30) at equal intervals along the circumferential direction. The inner walls of the multiple spherical grooves (30) are provided with multiple fine channels (31) at equal intervals. The multiple ball bearings (28) are respectively rolled in the spherical grooves (30). The side wall of the cutting rod (1) is provided with an annular flat cavity (27). The inner bottom surface of the multiple spherical grooves (30) is provided with bridging holes (29). One end of the multiple bridging holes (29) is respectively inserted into the annular flat cavity (27).

6. A urological urethral drug delivery device according to claim 5, characterized in that: The inner wall of the inner cavity (13) is provided with a connecting port (35) that extends into the annular flat cavity (27). The guide rod (5) is provided with a bending channel (12). The top end of the bending channel (12) extends into the outer surface of the guide rod (5) and is located on one side of the connecting port (35). The bottom end of the bending channel (12) extends into the other side of the bottom of the handle block (2). The outside of the handle block (2) is provided with an injection tube (9). The bottom end of the bending channel (12) extends into the bottom of the handle block (2) and forms an external thread interface on the handle block (2). The injection tube (9) is connected to the outlet of the bending channel (12) on the handle block (2).

7. A urological urethral drug delivery device according to claim 1, characterized in that: The cleaning component includes an umbrella-shaped silicone capsule (3), the top of which is fixed to the top surface inside the annular notch (34) and can expand by filling with liquid. The insert rod (1) has an annular adjustment cavity (18) inside. The inner wall of the annular adjustment cavity (18) near the upper part is hexagonal. The inner side of the annular adjustment cavity (18) is open in the middle and communicates with the inner cavity (13). The inner wall of the umbrella-shaped silicone capsule (3) near the top edge has multiple through holes (33) at equal intervals. All of the multiple through holes (33) penetrate into the interior of the annular adjustment cavity (18) near the top edge.

8. A urological urethral drug delivery device according to claim 7, characterized in that: The annular adjustment cavity (18) is provided with a sliding seal with a sealing pad (21). The outer surface of the sealing pad (21) is in sliding seal with the hexagonal inner wall of the upper part of the annular adjustment cavity (18). An annular ring (22) is fixed at the bottom of the sealing pad (21).

9. A urological urethral drug delivery device according to claim 8, characterized in that: Magnets (15) are embedded at the bottom of the ring (22) near the two side edges. Wedge-shaped openings (25) are opened at the bottom of the ring (22) near the front and rear side edges. The inner wall of one side of the two wedge-shaped openings (25) is inclined.

10. A urological urethral drug delivery device according to claim 9, characterized in that: Inside the annular adjustment cavity (18), a push ring (23) is provided in the middle section. The top of the push ring (23) is fixed with wedge blocks (26) near the front and rear sides. Both wedge blocks (26) are located inside the wedge opening (25), and one side of each wedge block (26) is in contact with the inclined surface inside the wedge opening (25). The bottom inner side of the push ring (23) is fixed on the outer surface of the guide rod (5). A spring (24) is fixed at the bottom of the push ring (23), and the bottom of the spring (24) slides against the bottom surface of the annular adjustment cavity (18).

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