Valve type anti-reflux antibacterial urinary catheter

Abstract

The utility model relates to the technical field of medical appliances, disclose a valve formula anti -reflux antibacterial urinary catheter, design includes catheter, one -way valve subassembly and connector subassembly, the catheter body includes the pipe body and the pipe head, one -way valve subassembly includes first valve and second valve, the first valve is fixed in the pipe head and is equipped with, the first valve is used for one -way control to pipe head position, the pipe body is away from the pipe head one end fixed connection has connector subassembly, second valve is located in connector subassembly, second valve is used for one -way control to the pipe body is away from pipe head one end, through catheter, one -way valve subassembly and connector subassembly cooperation can effectively prevent urine reflux, thereby effectively prevent the patient from using catheter and cause urinary tract infection, reduce the use risk of catheter.

Description

Technical Field

[0001] This utility model relates to the technical field of medical devices, and in particular to a valve-type anti-reflux antibacterial urinary catheter. Background Technology

[0002] In the medical field, urinary catheterization is a common clinical procedure. A urinary catheter is used during catheterization. A urinary catheter is a medical device that can help patients who cannot urinate independently to safely and effectively drain urine, thereby reducing the risk of urinary tract infection.

[0003] Traditional urinary catheters usually do not have anti-reflux properties. Under normal circumstances, they do not cause any problems. However, if the patient rolls over unconsciously and squeezes the urine bag, or if the urine bag is raised above the height of the bladder due to improper operation, the urine in the catheter can easily flow back into the bladder, which can easily cause urinary tract infections.

[0004] Currently, some urinary catheters prevent reflux by installing one-way valves. However, the one-way valve requires overcoming the spring force inside to allow one-way flow, which makes it difficult to completely empty the bladder. Some designs use one-way valves to prevent reflux, but one-way valves have poor sealing and weak pressure resistance, making it difficult to prevent reflux under excessive reverse pressure.

[0005] Furthermore, during catheter use, the area between the urethral mucosa and the outer wall of the catheter lumen is often left uncleaned for extended periods, leading to a proliferation of bacteria and causing catheter-related urinary tract infections (CAUTIs). The longer the catheter remains in place, the more bacteria grow, increasing the likelihood of infection. Before catheterization, each urination flushes and cleanses the urethra; however, after catheterization, the urethral mucosa cannot be cleaned before removal, making it highly susceptible to CAUTIs. Summary of the Invention

[0006] The purpose of this invention is to provide a valve-type anti-reflux and antibacterial urinary catheter to solve the problem of easy reflux in existing urinary catheters.

[0007] This utility model is achieved through the following technical solution:

[0008] A valve-type anti-reflux antibacterial urinary catheter includes a urinary catheter, a one-way valve assembly, and a connector assembly. The urinary catheter includes a tube body and a tube head. The one-way valve assembly includes a first valve and a second valve. The first valve is fixedly disposed inside the tube head and is used to unidirectionally control the position of the tube head. The connector assembly is fixedly connected to the end of the tube body away from the tube head. The second valve is located inside the connector assembly and is used to unidirectionally control the end of the tube body away from the tube head.

[0009] In one possible design, a flushing assembly is also included, which includes a urethral flushing tube. A urethral flushing port is provided on the tube body between the tube head and the connector assembly, and the urethral flushing tube connects the connector assembly to the urethral flushing port.

[0010] In one possible design, an expansion cavity is provided between the urethral irrigation port and the connector assembly on the tube body, and the tube body in the region where the expansion cavity is provided consists of an inner tube body and an outer tube body.

[0011] In one possible design, the tube head has a urine inlet, the first valve is located on the side of the urine inlet near the tube body, and the connector assembly includes a urine outlet connector for connecting to a urine bag.

[0012] In one possible design, the connector assembly further includes an expansion chamber water injection connector and a flushing pipe connector, the expansion chamber being connected to the expansion chamber water injection connector and the urethral flushing pipe being connected to the flushing pipe connector.

[0013] In one possible design, a balloon is also fixed to the catheter.

[0014] In one possible design, the connector assembly further includes a balloon injection connector, and the tube body is provided with a balloon connection channel that connects the balloon to the balloon injection connector.

[0015] In one possible design, both the expansion chamber water injection connector and the balloon water injection connector are provided with a reverse cut-off diaphragm. One side of the reverse cut-off diaphragm is fixedly connected to the connector assembly, and the reverse cut-off diaphragm is used to prevent water injected into the connector assembly from flowing back out.

[0016] In one possible design, the catheter is preferably made of medical-grade silicone material, and the surface of the catheter is coated with an antibacterial coating, which is a silver ion antibacterial coating.

[0017] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0018] This invention effectively prevents urine backflow by using a urinary catheter, a one-way valve assembly, and a connector assembly together. This effectively prevents urinary tract infections when patients use urinary catheters, reducing the risk of urinary catheter use. At the same time, the antibacterial coating on the surface of the urinary catheter can effectively prevent bacterial growth between the urethral mucosa and the outer wall of the urinary catheter lumen, thereby effectively reducing the incidence of CAUTIs. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0020] Figure 1 This is a schematic diagram of the structure of the balloon of this utility model in the inflated state;

[0021] Figure 2 This is a schematic diagram of the structure of the balloon of this utility model in its uninflated state;

[0022] Figure 3 This is a top view of the present invention;

[0023] Figure 4 for Figure 3 Sectional view at point AA;

[0024] Figure 5 for Figure 4 Enlarged view at point B in the middle;

[0025] Figure 6 for Figure 4 Sectional view at CC;

[0026] Figure 7 for Figure 4 Enlarged view at point D;

[0027] Figure 8 for Figure 4 Sectional view at EE;

[0028] Figure 9 for Figure 4 Enlarged view of point F in the middle.

[0029] The reference numerals in the attached figures represent: 101-tube head, 1011-urine inlet, 102-tube body, 1021-inner tube body, 1022-outer tube body, 103-balloon, 2-connector assembly, 201-urine outlet connector, 202-balloon water injection connector, 203-expansion chamber water injection connector, 204-flushing tube connector, 3-urethral flushing tube, 4-first valve, 5-balloon connection channel, 6-urethral flushing port, 7-expansion chamber, 8-second valve, 9-reverse cutoff diaphragm. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0031] Example 1, as Figures 1 to 9 As shown, a valve-type anti-reflux antibacterial urinary catheter includes a urinary catheter, a one-way valve assembly, and a connector assembly 2. The urinary catheter includes a tube body 102 and a tube head 101. The one-way valve assembly includes four first valves and eight second valves. The four first valves are fixedly installed inside the tube head 101. The four first valves are used to control the position of the tube head 101 in one direction to prevent urine in the tubing from flowing back into the bladder.

[0032] The connector assembly 2 is fixedly connected to the end of the tube body 102 away from the tube head 101. The second valve 8 is located inside the connector assembly 2. The second valve 8 is used to unidirectionally control the end of the tube body 102 away from the tube head 101. In use, first connect the urine bag to the connector assembly 2, then insert the tube head 101 end of the catheter into the bladder. The pressure of the bladder will force the urine through the catheter into the urine bag. The urine can flow smoothly from the bladder to the urine bag at the first valve 4 and the second valve 8. However, if the urine flows from the urine bag to the bladder, the first valve 4 and the second valve 8 will immediately close the channel to prevent urine backflow. The first valve 4 can promptly prevent the backflow of urine between the bladder and the catheter, while the second valve 8 can further prevent urine from the urine bag from flowing back into the catheter. This prevents the urine between the first valve 4 and the second valve 8 from being contaminated by urine from the urine bag. It ensures that the bacterial content of the urine near the first valve 4 in the catheter is almost the same as that of the urine in the bladder, so that even if there is some slight backflow at the first valve 4, it will not cause bacterial infection in the bladder. At the same time, with the cooperation of the first valve 4 and the second valve 8, the overall pressure resistance of the valve assembly can be effectively improved, ensuring that the valve assembly can withstand greater pressure.

[0033] Furthermore, a urine inlet 1011 is provided at the tube head 101, and the first valve 4 is located on the side of the urine inlet 1011 near the tube body 102. The connector assembly 2 includes a urine outlet connector 201, which is used to connect to the urine bag. More precisely, the second valve 8 is located inside the urine outlet connector 201 in the connector assembly 2.

[0034] Optionally, a balloon 103 is also fixedly mounted on the catheter. When indwelling, the balloon 103 can stably fix the catheter after it expands in the bladder, preventing the catheter from being easily pulled out. The connector assembly 2 also includes a balloon water inlet connector 202. The tube body 102 is also provided with a balloon connection channel 5. The balloon connection channel 5 connects the balloon 103 to the balloon water inlet connector 202. By injecting sterile water into the balloon water inlet connector 202, the expansion of the balloon 103 can be controlled. Alternatively, water can be withdrawn at the urine outlet connector 201 to shrink the balloon 103 to an uninflated state.

[0035] Example 2: Based on Example 1, this example further incorporates an antibacterial design into the catheter to effectively prevent bacterial growth between the urethral mucosa and the outer wall of the catheter lumen. This example also includes a flushing assembly, which includes a urethral flushing tube 3. A urethral flushing port 6 is provided on the tube body 102 between the balloon 103 and the connector assembly 2. The urethral flushing tube 3 connects the connector assembly 2 and the urethral flushing port 6.

[0036] Furthermore, an expansion cavity 7 is provided between the urethral irrigation port 6 and the connector assembly 2 on the tube body 102. The section of the tube body 102 in which the expansion cavity 7 is provided is composed of an inner tube body 1021 and an outer tube body 1022, and the inner tube body 1021 and the outer tube body 1022 cooperate to form the expansion cavity 7.

[0037] Furthermore, the connector assembly 2 also includes an expansion chamber water injection connector 203 and a flushing tube connector 204. The expansion chamber 7 is connected to the expansion chamber water injection connector 203, and the urethral flushing tube 3 is connected to the flushing tube connector 204. Injecting water into the expansion chamber water injection connector 203 expands the expansion chamber 7, thereby increasing the diameter of the tube body 102 in that section. This allows the tube body 102 to fit more tightly against the patient's urethra, thus preventing bacteria from entering through the urethral mucosa and the outer wall of the catheter lumen. The water gradually enters the bladder. After the water in the expansion chamber 7 is drawn out through the expansion chamber water inlet 203, the expansion chamber 7 will collapse. At this time, the gap between the tube body 102 and the urethra becomes larger. By injecting sterile water through the flushing tube inlet 204, the mucosa around the urethra and the outer wall of the catheter lumen can be flushed in a timely and effective manner, which can effectively inhibit bacterial growth. After flushing, water is injected into the expansion chamber 7 again to reduce the gap between the mucosa around the urethra and the outer wall of the catheter lumen, thus inhibiting the entry of bacteria.

[0038] In this embodiment, both the expansion chamber water injection connector 203 and the balloon water injection connector 202 are provided with a reverse cut-off diaphragm 9. One side of the reverse cut-off diaphragm 9 is fixedly connected to the connector assembly 2. The reverse cut-off diaphragm 9 is used to prevent the water injected into the connector assembly 2 from flowing out in reverse.

[0039] Advantageously, the catheter is preferably made of medical-grade silicone material to improve skin-friendliness and prevent urinary tract infections. The surface of the catheter is coated with an antibacterial coating to provide antibacterial effect. The one-way valve assembly is designed to automatically open when urine flows and automatically close when urine stops flowing to achieve one-way flow of urine and prevent backflow. The antibacterial coating is a silver ion antibacterial coating, which has a long-lasting antibacterial effect and can effectively reduce the growth of bacteria on the surface of the tube body 102, reducing the risk of urinary tract infections. The silver ion antibacterial coating is uniformly covered on the surface of the tube body 102 to form a protective film to prevent bacterial adhesion and reproduction.

[0040] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A valve-type anti-backflow antibacterial urinary catheter, comprising a urinary catheter, a one-way valve assembly, and a connector assembly (2), characterized in that, The catheter includes a tube body (102) and a tube head (101). The one-way valve assembly includes a first valve (4) and a second valve (8). The first valve (4) is fixedly provided inside the tube head (101). The first valve (4) is used to control the position of the tube head (101) in one direction. The connector assembly (2) is fixedly connected to one end of the tube body (102) away from the tube head (101). The second valve (8) is located inside the connector assembly (2). The second valve (8) is used to perform unidirectional control on the end of the tube body (102) away from the tube head (101).

2. The valve-type anti-reflux antibacterial urinary catheter according to claim 1, characterized in that, It also includes a flushing assembly, which includes a urethral flushing tube (3). On the tube body (102), a urethral flushing port (6) is provided between the tube head (101) and the connector assembly (2). The urethral flushing tube (3) connects the connector assembly (2) and the urethral flushing port (6).

3. The valve-type anti-reflux antibacterial urinary catheter according to claim 2, characterized in that, On the tube body (102), an expansion cavity (7) is provided between the urethral irrigation port (6) and the connector assembly (2). The tube body (102) in the region where the expansion cavity (7) is provided is composed of an inner tube body (1021) and an outer tube body (1022).

4. The valve-type anti-reflux antibacterial urinary catheter according to claim 3, characterized in that, The connector assembly (2) further includes an expansion chamber water injection connector (203) and a flushing pipe connector (204). The expansion chamber (7) is connected to the expansion chamber water injection connector (203), and the urethral flushing pipe (3) is connected to the flushing pipe connector (204).

5. A valve-type anti-reflux antibacterial urinary catheter according to claim 1, characterized in that, The tube head (101) is provided with a urine inlet (1011), and the first valve (4) is located on the side of the urine inlet (1011) close to the tube body (102). The connector assembly (2) includes a urine outlet connector (201) for connecting to the urine bag.

6. A valve-type anti-reflux antibacterial urinary catheter according to claim 1, characterized in that, A balloon (103) is also fixedly installed on the urinary catheter.

7. A valve-type anti-reflux antibacterial urinary catheter according to claim 6, characterized in that, The connector assembly (2) also includes a balloon water injection connector (202), and the tube body (102) is also provided with a balloon connection channel (5), which connects the balloon (103) to the balloon water injection connector (202).

8. A valve-type anti-reflux antibacterial urinary catheter according to claim 4, characterized in that, The expansion chamber water injection connector (203) is provided with a reverse cut-off diaphragm (9). One side of the reverse cut-off diaphragm (9) is fixedly connected to the connector assembly (2). The reverse cut-off diaphragm (9) is used to prevent the water injected into the connector assembly (2) from flowing out in reverse.

9. A valve-type anti-reflux antibacterial urinary catheter according to claim 7, characterized in that, The balloon water injection connector (202) is provided with a reverse cut-off diaphragm (9).

10. A valve-type anti-reflux antibacterial urinary catheter according to claim 1, characterized in that, The catheter is preferably made of medical-grade silicone material, and the surface of the catheter is coated with an antibacterial coating, which is a silver ion antibacterial coating.

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