Bladder irrigation device for pediatric urinary surgery

Abstract

The invention discloses a pediatric urinary surgery bladder irrigation device, and relates to the technical field of medical supplies, the pediatric urinary surgery bladder irrigation device comprises a catheter, the catheter comprises a catheter body, the outer wall of the front end of the catheter body is provided with a drainage hole, the rear end of the catheter body is provided with an irrigation pipe and a return pipe, and the irrigation pipe is connected with a recycling bin through a recycling pipe; the flushing pipe is connected with an injector through an infusion pipe, and a spray head is fixedly connected to the front end of the pipe body. The syringe comprises a fixed cylinder, a rotating cylinder and a handheld cylinder, the rotating cylinder can freely rotate around a shaft, a sealing seat is arranged in the fixed cylinder, a medicine storage cavity which is concave inwards is formed in one face of the sealing seat, an injection tube is arranged at the front end of the fixed cylinder, and a medicine storage cavity which is concave inwards is formed in the other face of the sealing seat. A liquid outlet channel communicated with the medicine storage cavity and the injection tube is arranged on the sealing seat; a liquid inlet hole communicated with the medicine storage cavity is formed in the side wall of the fixed cylinder. Instantaneous high-pressure impact of a traditional device is avoided, the weak bladder wall of a child is protected, and damage is reduced.

Description

Technical Field

[0001] This invention relates to the field of medical supplies technology, specifically to a pediatric urological bladder irrigation device. Background Technology

[0002] In pediatric urology clinical practice, bladder irrigation is an important nursing procedure, widely used in cases of urinary tract infections, post-bladder surgery care, and removal of foreign bodies from the bladder. The core purpose of this procedure is to remove inflammatory secretions, residual urine, blood clots, and other impurities from the bladder through the circulatory infusion of normal saline or a specialized irrigation solution. This maintains a clean bladder environment, prevents infection from worsening or post-operative complications, and ensures the normal recovery of the child's urinary system function.

[0003] However, most of the bladder irrigation devices currently used in clinical practice are designed based on adult anatomy and physiological tolerance, without fully considering the special characteristics of children. In particular, the physiological characteristics of children's bladders are significantly different from those of adults. Children's bladder wall tissues are not yet fully developed, the muscle layer is thin and the elasticity is poor, and the bladder capacity is much smaller than that of adults. Their tolerance threshold to external irrigation pressure is extremely low. In practical applications, existing irrigation devices generally have problems such as uncontrollable irrigation fluid delivery pressure and poor flow rate stability, which makes it easy to generate strong instantaneous impact force when the irrigation fluid enters the bladder.

[0004] This uncontrollable impact can have several adverse effects on a child's delicate bladder wall: First, direct mechanical impact can easily damage the bladder mucosa, disrupting the integrity of the mucosal barrier. This can not only cause pain and discomfort in the bladder area but also increase the risk of bladder mucosal bleeding, and in severe cases, may even induce new infections. Second, continuous or repeated impact can stimulate abnormal contraction of the bladder smooth muscle, which may lead to urinary dysfunction symptoms such as urinary frequency, urgency, and incontinence in children, affecting the postoperative recovery process. Third, for children who have undergone bladder surgery, the impact may interfere with wound healing, delay tissue repair, increase the probability of postoperative complications, and prolong the child's hospitalization and recovery period.

[0005] In view of the above, this application is hereby submitted. Summary of the Invention

[0006] The purpose of this invention is to provide a pediatric urological bladder irrigation device to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the present invention provides a pediatric urological bladder irrigation device, comprising: The catheter includes a tube body, a drainage hole on the outer wall of the front end of the tube body, a flushing tube and a return tube at the rear end of the tube body, the flushing tube being connected to a collection bucket through a collection tube, the flushing tube being connected to a syringe through an infusion tube, and a nozzle being fixedly connected to the front end of the tube body. The syringe includes a fixed cylinder, a rotating cylinder, and a handheld cylinder. The rotating cylinder can rotate freely around an axis. The fixed cylinder has a sealing seat inside, and a drug storage chamber recessed inward on one side of the sealing seat. An injection tube is provided at the front end of the fixed cylinder. The sealing seat has a liquid outlet channel connecting the drug storage chamber and the injection tube. An inlet hole communicating with the drug storage chamber is provided on the side wall of the fixed cylinder. A supply tube is connected inside the inlet hole, and the other end of the supply tube is connected to a storage tank. A push block is provided inside the rotating cylinder. The outer wall of the push block is threaded and airtightly connected to the inner wall of the rotating cylinder. The handheld cylinder has a pushing mechanism inside for pushing the push block into the fixed cylinder to push out the flushing fluid in the drug storage chamber from the liquid outlet channel for flushing.

[0008] Furthermore, the pushing mechanism includes a mounting base fixed inside the handheld tube, on which a coil spring is mounted. One end of the coil spring is fixedly connected to the mounting base, and the other end of the coil spring is fixedly connected to the inner wall of the rotating tube.

[0009] Furthermore, a guide rod is fixedly installed inside the rotating cylinder, and a guide groove matching the guide rod is provided on the push block; the push block can slide back and forth along the guide rod.

[0010] Furthermore, the sealing seat is made of rubber, and the front end of the push block is adapted to the shape and size of the medicine storage cavity.

[0011] Furthermore, during the rotation of the rotating cylinder, the joint between the fixed cylinder and the handheld cylinder remains airtight, and the outer periphery of the handheld cylinder is provided with anti-slip texture.

[0012] Furthermore, a balloon is provided on the outer wall of the tube near the front end, and an injection tube for delivering liquid into the balloon is connected to the tube near the rear end. A first one-way valve is provided at the end of the injection tube.

[0013] Furthermore, a third one-way valve is provided on the return pipe, a second one-way valve is provided on the flushing pipe, a duckbill valve is provided on the inner wall of the drainage hole, and a flushing hole is provided at the front end of the pipe body.

[0014] Furthermore, the nozzle includes a main body connected to the front end of the tube. The main body has a liquid inlet channel, an atomizing chamber, and a spray hole arranged sequentially from bottom to top inside. The flushing hole is connected to the liquid inlet channel. The atomizing chamber has an atomizing part inside, and a spiral flow channel is formed on the atomizing part. The liquid inlet channel has a guide part, which makes the liquid channel in the liquid inlet channel gradually narrow towards the atomizing chamber. The spray hole is funnel-shaped with a large top and a small bottom.

[0015] Furthermore, it also includes a flushing bracket for supporting the storage tank. The flushing bracket includes a sleeve, with a sliding rod slidably connected inside the sleeve. A locking bolt for locking the sliding rod is threaded onto the side wall of the sleeve. A limit sleeve is provided on the outer wall of the sliding rod. The storage tank is placed on the limit sleeve. A positioning frame is connected to the bottom end of the sleeve. An adjusting bolt is threaded onto the positioning frame. A pressure plate is rotatably connected to the top end of the adjusting bolt.

[0016] Furthermore, a support frame for carrying the syringe is provided on the side wall of the sleeve, and a clamping part is provided at the front end of the support frame, through which the syringe is clamped and fixed on the support frame.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, the spring-driven mechanism of the syringe releases elastic force evenly, and the threaded airtight connection between the push block and the rotating cylinder avoids pressure fluctuations associated with traditional manual injection. The limiting effect of the guide rod and guide groove further ensures stable advancement of the push block, preventing a sudden increase in pressure within the drug storage chamber. After the liquid is accelerated by the drainage section of the inlet channel, the spiral flow channel in the atomization chamber transforms the high-speed liquid column into a rotating flow, ultimately forming a mist-like flushing fluid through the funnel-shaped spray hole. This design allows the flushing fluid to replace traditional point impact with surface contact, significantly reducing the impact force per unit area and effectively avoiding problems such as bladder mucosal damage and abnormal smooth muscle contraction. It is especially suitable for the physiological characteristics of children with thin bladder wall muscle layers and low tolerance thresholds, ensuring postoperative wound healing and stable urination function in children.

[0018] 2. In this invention, the flushing pipe, return pipe and recycling tank form a complete circuit for liquid supply, flushing and waste liquid recycling. With the anti-backflow design of the second one-way valve, the third one-way valve and the duckbill valve, waste liquid is prevented from remaining in the bladder or contaminating the clean flushing solution, maintaining the clean environment inside the bladder and reducing the risk of infection. 3. The fixed structure of the balloon and the first one-way valve in this invention can cope with catheter displacement caused by children's restlessness, ensuring that the nozzle is always aligned with the area to be rinsed, thus improving the accuracy of rinsing. In terms of operational adaptability, the height of the rinsing bracket is adjustable and the syringe can be supported, reducing the burden on medical staff. Even with long-term rinsing, stable operation can be maintained, which is especially suitable for pediatric clinical scenarios with limited space and requiring precise operation, taking into account both treatment effectiveness and clinical practicality. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the front structure of the present invention; Figure 2 This is a schematic diagram of the rear view structure of the present invention; Figure 3 This is a front view structural diagram of the present invention; Figure 4 This is a schematic diagram of the syringe structure in this invention; Figure 5 This is a schematic cross-sectional view of the syringe in this invention; Figure 6 This is a cross-sectional structural diagram of the nozzle in this invention.

[0020] In the diagram: 1. Catheter; 11. Tube body; 12. Balloon; 13. Injection tubing; 14. First one-way valve; 15. Drainage port; 16. Flush tubing; 17. Second one-way valve; 18. Return tubing; 19. Third one-way valve; 110. Duckbill valve; 111. Flush port; 2. Recovery tubing; 3. Recovery container; 4. Syringe; 41. Fixed cylinder; 42. Rotating cylinder; 43. Injection tubing; 44. Inlet port; 45. Handheld cylinder; 46. Drug storage chamber; 47. Push block; 48. Mounting base; 49. Coil spring ; 410, Guide rod; 411, Guide groove; 412, Sealing seat; 413, Liquid outlet channel; 5, Liquid supply pipe; 6, Liquid delivery pipe; 7, Storage tank; 8, Flushing bracket; 81, Sleeve; 82, Sliding rod; 83, Limiting sleeve; 84, Locking bolt; 85, Positioning frame; 86, Adjusting bolt; 87, Pressure plate; 88, Bearing frame; 9, Nozzle; 91, Main body; 92, Liquid inlet channel; 93, Atomizing chamber; 94, Spray hole; 95, Atomizing part; 96, Drainage part; 97, Spiral flow channel. Detailed Implementation

[0021] 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.

[0022] Please see Figures 1-6 This invention provides a technical solution: a pediatric urological bladder irrigation device, comprising, The catheter 1 includes a tube body 11. A drainage hole 15 is provided on the outer wall of the front end of the tube body 11. The rear end of the tube body 11 has a flushing tube 16 and a return tube 18. The flushing tube 16 is connected to a recovery tank 3 through a recovery tube 2. The flushing tube 16 is connected to a syringe 4 through an infusion tube 6. A nozzle 9 is fixedly connected to the front end of the tube body 11. The syringe 4 includes a fixed cylinder 41, a rotating cylinder 42, and a handheld cylinder 45. The rotating cylinder 42 can rotate freely around an axis. The fixed cylinder 41 has a sealing seat 412 inside, and a drug storage chamber 46 recessed inward is provided on one side of the sealing seat 412. An injection tube 43 is provided at the front end of the fixed cylinder 41. The sealing seat 412 has a liquid outlet channel 413 connecting the drug storage chamber 46 and the injection tube 43. An inlet hole 44 communicating with the drug storage chamber 46 is provided on the side wall of the fixed cylinder 41. A liquid supply tube 5 is connected inside the inlet hole 44, and the other end of the liquid supply tube 5 is connected to a storage tank 7. A push block 47 is provided inside the rotating cylinder 42. The outer wall of the push block 47 is threaded and airtightly connected to the inner wall of the rotating cylinder 42. The handheld cylinder 45 has a pushing mechanism inside for pushing the push block 47 into the fixed cylinder 41 to push out the flushing liquid in the drug storage chamber 46 from the liquid outlet channel 413 for flushing.

[0023] Specifically, the tube body 11 of the catheter 1 is the core channel for flushing and reflux. The drainage hole 15 on the outer wall at the front end is used for waste liquid recovery. The flushing tube 16 branching at the rear end is responsible for delivering flushing fluid, and the reflux tube 18 is responsible for discharging waste liquid. The flushing tube 16 is connected to the syringe 4 through the infusion tube 6 to obtain flushing fluid, and is connected to the recovery tank 3 through the recovery tube 2 to temporarily store waste liquid, forming a closed-loop process of supply, flushing, and recovery. The nozzle 9 at the front end of the tube body 11 realizes the final spraying of flushing fluid. The syringe 4 consists of a fixed cylinder 41, a rotating cylinder 42, and a handheld cylinder 45. The rotating cylinder 42 can rotate freely around the axis. The sealing seat 412 inside the fixed cylinder 41 forms a drug storage chamber 46. The supply tube 5 delivers flushing fluid to the drug storage chamber 46 through the inlet hole 44. The pushing mechanism drives the push block 47, which is connected to the rotating cylinder 42 in a threaded airtight connection, to move towards the fixed cylinder 41, squeezing the flushing fluid in the drug storage chamber 46. The flushing fluid enters the flushing tube 16 through the outlet channel 413, the injection tube 43, and the infusion tube 6, completing the pressure-controlled delivery of flushing fluid.

[0024] As a technical optimization of the present invention, the driving mechanism includes a mounting base 48 fixed inside the handheld tube 45. A coil spring 49 is mounted on the mounting base 48. One end of the coil spring 49 is fixedly connected to the mounting base 48, and the other end of the coil spring 49 is fixedly connected to the inner wall of the rotating tube 42.

[0025] Specifically, the pushing mechanism is based on the mounting base 48, which is fixed inside the handheld cylinder 45. One end of the coil spring 49 is fixed to the mounting base 48, and the other end is fixed to the inner wall of the rotating cylinder 42. When the rotating cylinder 42 is rotated, the coil spring 49 is twisted to store elastic potential energy. After being released, the elastic potential energy is released, which drives the rotating cylinder 42 to rotate in the opposite direction, thereby driving the push block 47 to move towards the fixed cylinder 41 to complete the pushing of the flushing liquid.

[0026] As a technical optimization of the present invention, a guide rod 410 is also fixedly provided inside the rotating cylinder 42, and a guide groove 411 matching the guide rod 410 is provided on the push block 47; the push block 47 can slide back and forth along the guide rod 410.

[0027] Specifically, the guide rod 410 fixed inside the rotating cylinder 42 and the guide groove 411 on the push block 47 form a sliding fit. When the rotating cylinder 42 rotates, the push block 47 tends to translate due to the threaded connection. The guide rod 410 restricts the push block 47 from rotating synchronously with the rotating cylinder 42, and only allows the push block 47 to slide back and forth along the guide rod 410, ensuring that the push block 47 always accurately points to the medicine storage chamber 46.

[0028] As a technical optimization of the present invention, the sealing seat 412 is made of rubber, and the front end of the push block 47 is adapted to the shape and size of the medicine storage cavity 46.

[0029] Specifically, the sealing seat 412 is made of rubber, and the elastic properties of the rubber can achieve a tight fit between the drug storage cavity 46 and the push block 47. The front end of the push block 47 is adapted to the shape and size of the drug storage cavity 46. When the push block 47 is pushed forward, the front end can be completely embedded in the drug storage cavity 46, and the flushing liquid in the drug storage cavity 46 is completely pushed to the liquid outlet channel 413 without any residue.

[0030] As a technical optimization of the present invention, during the rotation of the rotating cylinder 42, the joint between the fixed cylinder 41 and the handheld cylinder 45 is kept airtight, and the outer periphery of the handheld cylinder 45 is provided with anti-slip texture.

[0031] Specifically, the joints between the rotating cylinder 42, the fixed cylinder 41, and the handheld cylinder 45 are designed to be airtight to prevent the rinsing fluid from leaking out from the joints; the anti-slip texture on the outer periphery of the handheld cylinder 45 increases the friction between the hand and the cylinder wall, making it easier for medical staff to hold it stably and avoid slipping during operation.

[0032] As a technical optimization of the present invention, a balloon 12 is provided on the outer wall of the tube body 11 near the front end, and an injection tube 13 for delivering liquid into the balloon 12 is connected to the tube body 11 near the rear end. A first one-way valve 14 is provided at the end of the injection tube 13.

[0033] Specifically, the balloon 12 on the outer wall of the front end of the tube body 11 is inflated by air / liquid through the injection tube 13. The first one-way valve 14 at the end of the injection tube 13 only allows liquid / gas to enter the balloon 12 and prevents backflow. After the balloon 12 is inflated, it fits against the inner wall of the bladder and fixes the catheter 1 in the bladder to prevent the tube body 11 from shifting during the flushing process.

[0034] As a technical optimization of the present invention, a third one-way valve 19 is provided on the return pipe 18, a second one-way valve 17 is provided on the flushing pipe 16, a duckbill valve 110 is provided on the inner wall of the drainage hole 15, and a flushing hole 111 is provided at the front end of the pipe body 11.

[0035] Specifically, the second one-way valve 17 on the flushing tube 16 only allows flushing fluid to flow from the syringe 4 to the tube body 11, preventing waste fluid in the bladder from flowing back into the flushing tube 16; the third one-way valve 19 on the return tube 18 only allows waste fluid to flow from the tube body 11 to the recovery tank 3, preventing waste fluid from flowing back into the bladder; the duckbill valve 110 on the inner wall of the drainage hole 15 opens when waste fluid flows back and closes when flushing fluid is delivered, further preventing flushing fluid from leaking from the drainage hole 15; the flushing hole 111 at the front end of the tube body 11 is the only channel for flushing fluid to enter the nozzle 9, ensuring concentrated delivery of flushing fluid.

[0036] As a technical optimization of the present invention, the nozzle 9 includes a main body 91 connected to the front end of the tube body 11. The main body 91 has a liquid inlet channel 92, an atomizing chamber 93 and a spray hole 94 arranged sequentially from bottom to top inside. The flushing hole 111 is connected to the liquid inlet channel 92. The atomizing chamber 93 has an atomizing part 95 inside. The atomizing part 95 has a spiral flow channel 97. The liquid inlet channel 92 has a guide part 96. The guide part 96 makes the liquid channel in the liquid inlet channel 92 gradually narrow towards the atomizing chamber 93. The spray hole 94 is funnel-shaped with a large top and a small bottom.

[0037] Specifically, within the main body 91 of the nozzle 9, the guide section 96 of the liquid inlet channel 92 gradually narrows the liquid channel toward the atomizing chamber 93, accelerating the flow rate of the flushing liquid. After the high-speed flushing liquid enters the atomizing chamber 93, it forms a rotating flow through the spiral flow channel 97 of the atomizing section 95, reducing the liquid impact force. Finally, through the funnel-shaped spray hole 94 with a large top and a small bottom, the flushing liquid is dispersed into a mist and sprayed evenly onto the inner wall of the bladder.

[0038] As a technical optimization of the present invention, it also includes a flushing bracket 8 for supporting the storage tank 7. The flushing bracket 8 includes a sleeve 81, a sliding rod 82 is slidably connected inside the sleeve 81, a locking bolt 84 for locking the sliding rod 82 is threadedly connected to the side wall of the sleeve 81, a limiting sleeve 83 is provided on the outer wall of the sliding rod 82, the storage tank 7 is placed on the limiting sleeve 83, a positioning frame 85 is connected to the bottom end of the sleeve 81, an adjusting bolt 86 is threadedly connected to the positioning frame 85, and a pressure plate 87 is rotatably connected to the top end of the adjusting bolt 86.

[0039] Specifically, the sleeve 81 of the rinsing bracket 8 is slidably engaged with the slide rod 82. Loosening the locking bolt 84 can adjust the height of the slide rod 82, thereby adjusting the height of the storage tank 7 on the limiting sleeve 83. When the adjusting bolt 86 on the positioning frame 85 is rotated, it pushes the pressure plate 87 to move up and down. After the pressure plate 87 is in contact with the table, it enhances the stability of the bracket. The storage tank 7 is placed inside the limiting sleeve 83 to achieve fixed support.

[0040] As a technical optimization of the present invention, a support frame 88 for carrying the syringe 4 is provided on the side wall of the sleeve 81, and a clamping part is provided at the front end of the support frame 88, and the syringe 4 is clamped and fixed on the support frame 88 by the clamping part.

[0041] Specifically, the front end of the support frame 88 on the side wall of the sleeve 81 is provided with a clamping part, and the syringe 4 can be fixed on the support frame 88 through the clamping part to achieve the suspension support of the syringe 4, so that medical staff do not need to hold it continuously.

[0042] The device's structural design enables safe and effective flushing of children's bladders. The specific process and the function of each component are as follows: I. Preoperative preparation and device fixation stage First, the tip of the catheter body 11 is inserted into the child's bladder. Physiological saline is then delivered into the balloon 12 through the infusion tube 13 near the rear end of the catheter body 11, causing the balloon 12 to inflate and conform to the inner wall of the bladder, thus fixing the catheter 1 in place and preventing the catheter body 11 from shifting during the flushing process. The first one-way valve 14 at the end of the infusion tube 13 can prevent the backflow of liquid in the balloon 12, ensuring the stability of the fixation.

[0043] According to clinical operation needs, adjust the height of the irrigation support 8, loosen the locking bolt 84 on the side wall of the sleeve 81, slide the slide bar 82 along the sleeve 81 to the appropriate position and then tighten it again, so that the storage tank 7 on the limiting sleeve 83 is at a height that is convenient for liquid supply; at the same time, fix the syringe 4 through the clamping part of the support frame 88 on the side wall of the sleeve 81 to reduce the burden on medical staff; the adjusting bolt 86 on the positioning frame 85 can push the pressure plate 87 to fit against the table by rotating, which enhances the overall stability of the irrigation support 8.

[0044] II. Fluid Supply and Pressure Controlled Delivery Stage The flushing solution in the storage tank 7, such as physiological saline or special medicine solution, enters the fixed cylinder 41 of the syringe 4 through the supply pipe 5. The supply pipe 5 is connected to the inlet hole 44 on the side wall of the fixed cylinder 41. The flushing solution flows into the medicine storage chamber 46 of the sealing seat 412 through the inlet hole 44, completing the pre-storage of the flushing solution. The sealing seat 412 is made of rubber, which can ensure the airtightness of the medicine storage chamber 46 and prevent liquid leakage.

[0045] Medical staff hold the syringe 45 with their handheld barrel and drive the push block 47 towards the fixed barrel 41 via a pushing mechanism. The core of the pushing mechanism is the coil spring 49 on the mounting base 48. One end of the coil spring 49 is fixed to the mounting base 48, and the other end is fixed to the inner wall of the rotating barrel 42. When the rotating barrel 42 is rotated, the coil spring 49 generates elastic force, which drives the push block 47 to slide along the guide rod 410. The guide groove 411 of the push block 47 cooperates with the guide rod 410 to ensure stable sliding direction. The front end of the pusher 47 is adapted to the shape and size of the drug storage chamber 46, and its outer wall is connected to the inner wall of the rotating cylinder 42 in an airtight thread. When the rotating cylinder 42 rotates around the axis, the pusher 47 moves backward along the inner wall of the rotating cylinder 42, and the flushing liquid enters the drug storage chamber 46. When the rotating cylinder 42 is released, the energy stored in the coil spring 49 is released rapidly and drives the rotating cylinder 42 to rotate in the opposite direction, which in turn pushes the pusher 47 to move rapidly in the opposite direction. During the rapid translation of the pusher 47, the flushing liquid is sprayed out from the injection tube 43 at high speed, forming a high-speed liquid column.

[0046] III. Gentle bladder irrigation phase The high-speed liquid column enters the flushing pipe 16 through the infusion pipe 6. The flushing liquid eventually flows to the nozzle 9 at the front end of the pipe body 11. The flushing liquid enters the liquid inlet channel 92 of the main body 91 of the nozzle 9 through the flushing hole 111 at the front end of the pipe body 11. The guide part 96 in the liquid inlet channel 92 makes the liquid channel gradually narrow towards the atomization chamber 93, accelerating the liquid flow rate. After the high-speed liquid enters the atomizing chamber 93, it forms a rotating flow through the spiral flow channel 97 of the atomizing section 95, reducing the liquid impact force. Finally, it forms a gentle mist-like flushing liquid through the funnel-shaped spray hole 94 with a large top and a small bottom, which is evenly sprayed onto the inner wall of the child's bladder, avoiding damage to the thin bladder wall caused by traditional direct flushing.

[0047] IV. Waste Liquid Recirculation and Recovery Stage The waste liquid generated after rinsing contains impurities and residual rinsing fluid, which flows back into the tube body 11 through the drainage hole 15, and then is discharged through the return pipe 18 at the rear end of the tube body 11. The third one-way valve 19 on the return pipe 18 can prevent the waste liquid from flowing back into the bladder and ensure that the waste liquid flows in one direction.

[0048] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0049] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A pediatric urological bladder irrigation device, characterized in that: include, The catheter (1) includes a tube body (11), a drainage hole (15) is provided on the outer wall of the front end of the tube body (11), the rear end of the tube body (11) has a flushing tube (16) and a return tube (18), the flushing tube (16) is connected to a recovery bucket (3) through a recovery tube (2), the flushing tube (16) is connected to a syringe (4) through an infusion tube (6), and a nozzle (9) is fixedly connected to the front end of the tube body (11). The syringe (4) includes a fixed cylinder (41), a rotating cylinder (42), and a handheld cylinder (45). The rotating cylinder (42) can rotate freely around an axis. A sealing seat (412) is provided inside the fixed cylinder (41). A drug storage cavity (46) with an inward indentation is provided on one side of the sealing seat (412). An injection tube (43) is provided at the front end of the fixed cylinder (41). An outlet channel (413) communicating with the injection tube (43) is provided on the sealing seat (412). A sidewall of the fixed cylinder (41) is provided with... An inlet hole (44) communicating with the medicine storage chamber (46) is provided. A supply pipe (5) is connected inside the inlet hole (44), and the other end of the supply pipe (5) is connected to a storage tank (7). A push block (47) is provided inside the rotating cylinder (42). The outer wall of the push block (47) is connected to the inner wall of the rotating cylinder (42) with a threaded airtight connection. A push mechanism is provided inside the hand-held cylinder (45) for pushing the push block (47) into the fixed cylinder (41) to push the flushing liquid inside the medicine storage chamber (46) out of the outlet channel (413) for flushing.

2. The pediatric urological bladder irrigation device as described in claim 1, characterized in that: The pushing mechanism includes a mounting base (48) fixed inside the handheld tube (45). A coil spring (49) is mounted on the mounting base (48). One end of the coil spring (49) is fixedly connected to the mounting base (48), and the other end of the coil spring (49) is fixedly connected to the inner wall of the rotating tube (42).

3. The pediatric urological bladder irrigation device as described in claim 1, characterized in that: A guide rod (410) is fixedly installed inside the rotating cylinder (42), and a guide groove (411) matching the guide rod (410) is opened on the push block (47); the push block (47) can slide back and forth along the guide rod (410).

4. The pediatric urological bladder irrigation device as described in claim 1, characterized in that: The sealing seat (412) is made of rubber, and the front end of the push block (47) is adapted to the shape and size of the medicine storage cavity (46).

5. A pediatric urological bladder irrigation device as described in claim 1, characterized in that: During the rotation of the rotating cylinder (42), the joint between the fixed cylinder (41) and the handheld cylinder (45) remains airtight, and the outer periphery of the handheld cylinder (45) is provided with anti-slip texture.

6. A pediatric urological bladder irrigation device as described in claim 1, characterized in that: A balloon (12) is provided on the outer wall of the tube (11) near the front end. A liquid injection tube (13) for delivering liquid into the balloon (12) is connected to the tube (11) near the rear end. A first one-way valve (14) is provided at the end of the liquid injection tube (13).

7. A pediatric urological bladder irrigation device as described in claim 1, characterized in that: The return pipe (18) is provided with a third one-way valve (19), the flushing pipe (16) is provided with a second one-way valve (17), the inner wall of the drainage hole (15) is provided with a duckbill valve (110), and the front end of the pipe body (11) is provided with a flushing hole (111).

8. A pediatric urological bladder irrigation device as described in claim 7, characterized in that: The nozzle (9) includes a main body (91) connected to the front end of the tube (11). The main body (91) has a liquid inlet channel (92), an atomizing chamber (93) and a spray hole (94) arranged from bottom to top inside. The flushing hole (111) is connected to the liquid inlet channel (92). The atomizing chamber (93) has an atomizing part (95) inside. The atomizing part (95) has a spiral flow channel (97) on it. The liquid inlet channel (92) has a guide part (96) inside. The guide part (96) makes the liquid channel in the liquid inlet channel (92) gradually narrow towards the atomizing chamber (93). The spray hole (94) is funnel-shaped with a large top and a small bottom.

9. A pediatric urological bladder irrigation device as described in claim 1, characterized in that: It also includes a flushing bracket (8) for supporting the storage tank (7), the flushing bracket (8) includes a sleeve (81), a slide rod (82) is slidably connected inside the sleeve (81), a locking bolt (84) for locking the slide rod (82) is threaded on the side wall of the sleeve (81), a limit sleeve (83) is provided on the outer wall of the slide rod (82), the storage tank (7) is placed on the limit sleeve (83), a positioning frame (85) is connected to the bottom end of the sleeve (81), an adjusting bolt (86) is threaded on the positioning frame (85), and a pressure plate (87) is rotatably connected to the top end of the adjusting bolt (86).

10. A pediatric urological bladder irrigation device as described in claim 9, characterized in that: The sleeve (81) is provided with a support frame (88) for carrying the syringe (4) on its side wall. The front end of the support frame (88) is provided with a clamping part, and the syringe (4) is clamped and fixed on the support frame (88) by the clamping part.

Images