Three chamber urinary catheter for children
By designing a three-lumen urinary catheter for children, using an inflation component and a positioning component to stabilize the outer thick tube and fix the inner urinary catheter, efficient and safe urinary catheterization and urinary tract flushing for children are achieved. This solves the problems of traditional urinary catheters slipping and lacking flushing function, and reduces the risk of urinary tract infection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THE FIRST AFFILIATED HOSPITAL OF DALI UNIV
- Filing Date
- 2024-12-27
- Publication Date
- 2026-06-12
AI Technical Summary
Traditional urinary catheters are prone to slipping out in pediatric patients, causing discomfort, and lack urethral flushing function, increasing the risk of urinary tract infections.
Design a three-lumen urinary catheter for children, comprising an outer thick tube, a middle fixing tube, an inner catheter, a flushing chamber, a positioning component, an inflation component, and a flushing component. The outer thick tube is secured in the urethra by the inflation component, and the inner catheter is fixed by the positioning component, thus realizing the functions of catheterization and urethral flushing.
It achieves efficient and safe urinary catheterization and urinary tract flushing in children, preventing urinary tract infections and reducing the risk of urinary tract discomfort and slippage.
Smart Images

Figure CN224345274U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of three-lumen urinary catheter technology, and in particular to a three-lumen urinary catheter for children. Background Technology
[0002] In pediatric medical care practice, catheterization is a common and important procedure. It is of great significance for monitoring urine output, assessing renal function, and treating certain diseases. However, traditional catheter designs often fail to meet the needs of efficient catheterization and urethral flushing at the same time, especially in pediatric patients.
[0003] In actual use, on the one hand, because children's urethras are relatively small and sensitive, traditional catheters are prone to slipping or causing discomfort during use, bringing additional pain to the children. On the other hand, traditional catheters usually only have a single function of urination, which cannot effectively meet the need for regular flushing of the urethra, thereby increasing the risk of urinary tract infection. Therefore, improvements are urgently needed to address the problem of inconvenience in achieving efficient urination and urethral flushing.
[0004] Therefore, to address the aforementioned problems of inconvenience in achieving efficient urinary catheterization and urethral flushing, a three-lumen urinary catheter for children can be designed. During use, firstly, one end of the catheterization component and one end of the flushing component are inserted into the child's urethra. Then, the outer thick tube is secured in the urethra using an inflation component. Subsequently, urine is drained through the catheterization component. Multiple positioning components secure the inner catheter to prevent it from detaching. Additionally, the tail end of the outer thick tube is connected to the flushing device. Water enters the flushing component through the flushing chamber and then flushes the urethra, effectively preventing urinary tract infections. Wastewater is then returned to the flushing chamber through the flushing component and discharged through the tail end of the outer thick tube. This novel three-lumen urinary catheter for children achieves efficient and safe urinary catheterization and urethral flushing functions through its unique design. Utility Model Content
[0005] To address the issues that traditional catheters are prone to slipping or causing discomfort and additional pain for children due to the relatively small and sensitive urethra of children, and the fact that they typically only have a single function of catheterization and cannot effectively meet the need for regular urethral flushing, thus increasing the risk of urinary tract infections, improvements are urgently needed to address these problems and ensure efficient catheterization and urethral flushing.
[0006] The technical solution of this utility model is as follows: a three-lumen urinary catheter for children, comprising an outer thick tube, a middle fixing tube, an inner urinary catheter, a flushing chamber, a positioning component, an inflation component, a urinary catheterization component, and a flushing component; the middle fixing tube is arranged inside the outer thick tube, multiple positioning components are arranged inside the middle fixing tube, the inner urinary catheter is arranged inside the positioning component, the space formed between the outer thick tube and the middle fixing tube is the flushing chamber, a flushing component is arranged at one end of the outer thick tube, an inflation component is arranged on the side wall of the outer thick tube, and urinary catheterization components are arranged at both ends of the inner urinary catheter.
[0007] Preferably, during the use of the three-lumen urinary catheter, firstly, one end of the catheterization component and the flushing component are inserted into the child's urethra. Then, the outer thick tube is secured in the urethra by the inflation component. Subsequently, urine is drained through the catheterization component. In addition, multiple positioning components secure the inner catheter to prevent it from falling off. Furthermore, the tail end of the outer thick tube is connected to the flushing device. Water enters the flushing component through the flushing chamber and then flushes the urethra, effectively preventing urinary tract infections. Wastewater is then returned to the flushing chamber through the flushing component and discharged through the tail end of the outer thick tube. This invention's three-lumen urinary catheter for children achieves efficient and safe catheterization, urination, and urethral flushing functions through its unique design.
[0008] Preferably, the positioning component includes an elastic positioning ring; the middle layer fixing tube is provided with an elastic positioning ring, and multiple sets of elastic positioning rings are provided, with an inner urinary catheter provided inside the elastic positioning ring.
[0009] Preferably, the inflation assembly includes an inflation tube and an inflation bladder; the inflation bladder is provided on the side wall of the outer thick tube, and the inflation tube is provided inside the outer thick tube, with one end of the inflation tube fixedly connected to the inner wall of the inflation bladder.
[0010] Preferably, the inflation assembly also includes an inflation valve and an inflation port; an inflation hole is provided at the other end of the inflation tube, and an inflation valve is provided at the other end of the inflation tube.
[0011] Preferably, the catheterization assembly includes a catheter head and a catheter port; one end of the inner catheter is provided with a catheter head, and a catheter port is provided on the side wall of the catheter head, with the catheter head located on one side of the flushing tube.
[0012] Preferably, the catheterization assembly also includes a urination tube and a urination port; the other end of the inner catheter is provided with a urination tube, one end of which has a urination port, and the urination tube is located on the side wall of the tail end of the outer thick tube.
[0013] Preferably, the flushing assembly includes a flushing pipe and a flushing hole; one end of the outer thick pipe is provided with a flushing pipe, one end of the flushing pipe is provided with a flushing hole, and the other end of the flushing pipe is fixedly connected to the inner wall of the flushing chamber.
[0014] The beneficial effects of this utility model are:
[0015] When using the three-lumen urinary catheter, firstly, one end of the catheterization component and the flushing component are inserted into the child's urethra. Then, the outer thick tube is secured in the urethra by the inflation component. Subsequently, urine is drained through the catheterization component. In addition, multiple positioning components secure the inner catheter to prevent it from falling off. Furthermore, the tail end of the outer thick tube is connected to the flushing device. Water enters the flushing component through the flushing chamber and then flushes the urethra, effectively preventing urinary tract infections. Wastewater is then returned to the flushing chamber through the flushing component and discharged through the tail end of the outer thick tube. This invention's three-lumen urinary catheter for children achieves efficient and safe catheterization, urination, and urethral flushing functions through its unique design. Attached Figure Description
[0016] Figure 1 The diagram shown is a three-dimensional structural schematic of the first three-dimensional structure of a three-lumen urinary catheter for children according to this utility model;
[0017] Figure 2 The diagram shown is a partial three-dimensional structural diagram of a three-lumen urinary catheter for children according to this utility model;
[0018] Figure 3 The diagram shown is a three-dimensional structural schematic of a second part of a three-lumen urinary catheter for children according to this utility model.
[0019] Figure 4 The diagram shown is a three-dimensional structural diagram of the third part of a three-lumen urinary catheter for children according to this utility model;
[0020] Figure 5 The diagram shown is a three-dimensional structural schematic of the fourth part of a three-lumen urinary catheter for children according to this utility model;
[0021] Figure 6 The diagram shown is a partial three-dimensional structural diagram of a pediatric three-lumen urinary catheter according to this utility model.
[0022] Explanation of reference numerals in the attached diagram: 1. Outer thick tube; 2. Middle fixing tube; 3. Inner catheter; 4. Flushing chamber; 101. Elastic positioning ring; 201. Inflation tube; 202. Inflation bag; 203. Inflation valve; 204. Inflation port; 301. Catheter head; 302. Catheter port; 303. Drainage tube; 304. Drainage port; 401. Flushing tube; 402. Flushing hole. Detailed Implementation
[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0024] Please see Figures 1-6This utility model provides an embodiment: a three-lumen urinary catheter for children, including an outer thick tube 1, a middle fixing tube 2, an inner urinary catheter 3, a flushing chamber 4, a positioning component, an inflation component, a urinary catheterization component, and a flushing component; the middle fixing tube 2 is disposed inside the outer thick tube 1, multiple sets of positioning components are disposed inside the middle fixing tube 2, the inner urinary catheter 3 is disposed inside the positioning component, the space formed between the outer thick tube 1 and the middle fixing tube 2 is the flushing chamber 4, a flushing component is disposed at one end of the outer thick tube 1, an inflation component is disposed on the side wall of the outer thick tube 1, and urinary catheterization components are disposed at both ends of the inner urinary catheter 3.
[0025] Please see Figure 2 The positioning component includes an elastic positioning ring 101; multiple sets of elastic positioning rings 101 are provided inside the middle layer fixing tube 2, and an inner layer catheter 3 is provided inside the elastic positioning ring 101; the inner layer catheter 3 can be fixed by multiple sets of elastic positioning rings 101 to prevent the inner layer catheter 3 from falling off; the inflation component includes an inflation tube 201 and an inflation balloon 202; an inflation balloon 202 is provided on the side wall of the outer layer thick tube 1, and an inflation balloon 202 is provided inside the outer layer thick tube 1. An inflation tube 201 is provided, one end of which is fixedly connected to the inner wall of the inflation bag 202; gas is inflated into the inflation bag 202 through the inflation tube 201; the inflation assembly also includes an inflation valve 203 and an inflation port 204; an inflation hole is provided at the other end of the inflation tube 201, and an inflation valve 203 is provided at the other end of the inflation tube 201; when the inflation valve 203 is opened, gas is drawn into the inflation tube 201 through the inflation hole to inflate the inflation bag 202, so that the outer thick tube 1 is firmly placed in the urethra.
[0026] Please see Figures 3-6 In this embodiment, the urinary catheterization assembly includes a catheter head 301 and a catheter port 302; one end of the inner urinary catheter 3 is provided with a catheter head 301, and a catheter port 302 is opened on the side wall of the catheter head 301, and the catheter head 301 is located on one side of the flushing tube 401; urine flows into the interior of the urinary catheter through the catheter port 302; the urinary catheterization assembly also includes a drain tube 303 and a drain port 304; the other end of the inner urinary catheter 3 is provided with a drain tube 303, and a drain port 304 is opened at one end of the drain tube 303. It is installed on the side wall of the tail end of the outer thick tube 1; urine is discharged through the urination tube 303; the flushing assembly includes a flushing tube 401 and a flushing hole 402; one end of the outer thick tube 1 is provided with a flushing tube 401, one end of the flushing tube 401 has a flushing hole 402, and the other end of the flushing tube 401 is fixedly connected to the inner wall of the flushing chamber 4; the tail end of the outer thick tube 1 is connected to the flushing device, water enters the flushing tube 401 through the flushing chamber 4, and then enters the urethra through the flushing hole 402 for flushing, effectively preventing urinary tract infections.
[0027] When the three-lumen catheter is in use, first, insert one end of the catheter head 301 and the flushing tube 401 into the child's urethra. Then, open the inflation valve 203 to draw gas into the inflation tube 201 through the inflation hole to inflate the inflation balloon 202, so that the outer thick tube 1 is firmly placed in the urethra.
[0028] Subsequently, urine flows into the inside of the catheter through the urinary inlet 302 and is then discharged through the urination tube 303. Furthermore, the inner catheter 3 can be fixed by multiple sets of elastic positioning rings 101 to prevent the inner catheter 3 from falling off.
[0029] In addition, the tail end of the outer thick tube 1 is connected to the flushing device. The water enters the flushing tube 401 through the flushing chamber 4, and then enters the urethra through the flushing hole 402 for flushing, which effectively prevents urinary tract infection. The waste liquid is then returned to the flushing chamber 4 through the flushing tube 401 and discharged through the tail end of the outer thick tube 1.
[0030] This utility model's three-lumen urinary catheter for children achieves efficient and safe urination and urethral flushing functions through its unique design.
[0031] Through the above steps, when the three-lumen urinary catheter is in use, firstly, one end of the catheterization component and the flushing component are inserted into the child's urethra. Then, the outer thick tube 1 is secured in the urethra by the inflation component. Subsequently, urine is discharged through the catheterization component. In addition, the inner catheter 3 is secured by multiple positioning components to prevent the inner catheterization component from falling off. Furthermore, the tail end of the outer thick tube 1 is connected to the flushing device. Water enters the flushing component through the flushing chamber 4 and then flushes the urethra, effectively preventing urinary tract infections. The waste is then returned to the flushing chamber 4 through the flushing component and discharged through the tail end of the outer thick tube 1. This utility model of a three-lumen urinary catheter for children achieves efficient and safe catheterization, urination, and urethral flushing functions through its unique design.
[0032] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.
Claims
1. A pediatric three-lumen urinary catheter, comprising an outer thick tube (1); characterized in that: It also includes a middle layer fixing tube (2), an inner layer catheter (3), a flushing chamber (4), a positioning component, an inflation component, a catheterization component, and a flushing component; the middle layer fixing tube (2) is installed inside the outer layer thick tube (1), and multiple positioning components are installed inside the middle layer fixing tube (2). The inner layer catheter (3) is installed inside the positioning component. The space formed between the outer layer thick tube (1) and the middle layer fixing tube (2) is the flushing chamber (4). A flushing component is installed at one end of the outer layer thick tube (1), and an inflation component is installed on the side wall of the outer layer thick tube (1). Catheterization components are installed at both ends of the inner layer catheter (3).
2. The pediatric three-lumen urinary catheter according to claim 1, characterized in that: The positioning component includes an elastic positioning ring (101); the middle layer fixing tube (2) is provided with an elastic positioning ring (101) inside, and multiple sets of elastic positioning rings (101) are provided. The inner layer catheter (3) is provided inside the elastic positioning ring (101).
3. A pediatric three-lumen urinary catheter according to claim 2, characterized in that: The inflation assembly includes an inflation tube (201) and an inflation bladder (202); the inflation bladder (202) is provided on the side wall of the outer thick tube (1), and the inflation tube (201) is provided inside the outer thick tube (1). One end of the inflation tube (201) is fixedly connected to the inner wall of the inflation bladder (202).
4. A pediatric three-lumen urinary catheter according to claim 3, characterized in that: The inflation assembly also includes an inflation valve (203) and an inflation port (204); an inflation hole is provided at the other end of the inflation tube (201), and an inflation valve (203) is provided at the other end of the inflation tube (201).
5. A pediatric three-lumen urinary catheter according to claim 3, characterized in that: The catheterization assembly includes a catheter head (301) and a catheter port (302); one end of the inner catheter (3) is provided with a catheter head (301), and a catheter port (302) is provided on the side wall of the catheter head (301). The catheter head (301) is located on one side of the flushing tube (401).
6. A pediatric three-lumen urinary catheter according to claim 5, characterized in that: The catheterization assembly also includes a urination tube (303) and a urination port (304); the other end of the inner catheter (3) is provided with a urination tube (303), and one end of the urination tube (303) is provided with a urination port (304). The urination tube (303) is located on the tail end side wall of the outer thick tube (1).
7. A pediatric three-lumen urinary catheter according to claim 5, characterized in that: The flushing assembly includes a flushing pipe (401) and a flushing hole (402); one end of the outer thick pipe (1) is provided with a flushing pipe (401), one end of the flushing pipe (401) is provided with a flushing hole (402), and the other end of the flushing pipe (401) is fixedly connected to the inner wall of the flushing chamber (4).