Anti-backflow urine bag
By installing a flow-blocking valve and a cone-shaped bag design at the outlet of the urine bag overflow channel, the problem of urine backflow when the urine bag is squeezed is solved, achieving one-way flow of urine and anti-backflow effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2026-03-06
AI Technical Summary
Existing urine bags still experience urine backflow when squeezed, and current anti-backflow designs cannot effectively prevent this from happening.
A flow-blocking valve is installed at the outlet of the overflow channel of the urine bag, and the overflow channel allows for one-way flow. Combined with the cone-shaped bag and support mesh design, this prevents urine from flowing back into the catheter.
This effectively prevents urine from flowing back into the catheter when the urine bag is squeezed, reduces the noise when urine enters the bag, and improves the backflow prevention performance of the urine bag.
Smart Images

Figure CN223969327U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of urine bag technology, specifically to an anti-backflow urine bag. Background Technology
[0002] Urine bags are a common and frequently used nursing procedure in clinical practice to accurately record urine volume and alleviate patients' difficulty in urinating. They are essential supplies for indwelling catheters and need to be changed regularly. Current anti-backflow designs for urine bags primarily prevent urine reflux caused by tipping or inverting the bag. However, backflow can still occur when the bag is squeezed. Therefore, it is necessary to prevent urine reflux after the bag is squeezed.
[0003] In the prior art, for example, the utility model CN220513202U, an anti-backflow and anti-drop urine bag, uses an inclined partition component to divide two chambers with a height difference. The narrow opening design of the connecting port makes it more difficult for urine entering the storage chamber to flow back into the buffer chamber, and the small amount of urine in the buffer chamber is even more difficult to flow back to the bag opening, thus achieving the purpose of preventing backflow. However, when the bag body in this patent is squeezed, the urine in the storage chamber will flow back into the buffer chamber, and the urine in the buffer chamber will flow back to the bag opening. Urine backflow still occurs when the bag body is squeezed.
[0004] Therefore, how to prevent urine backflow after the urine bag is squeezed is an urgent problem to be solved in this technical field. Utility Model Content
[0005] Current anti-backflow designs for urine bags primarily aim to prevent urine reflux caused by tipping or inverting the bag. However, they still fall short when the bag is compressed, preventing backflow. A new anti-backflow urine bag is proposed that uses a flow-blocking valve at the outlet of the overflow channel. This valve allows for one-way flow, preventing urine from flowing back into the catheter and thus avoiding backflow when the bag is compressed.
[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution:
[0007] A backflow prevention urine bag includes a bag body for storing urine, a catheter being connected through the bag body, and further includes:
[0008] An anti-backflow block is disposed inside the bag. The anti-backflow block has multiple overflow channels that are opened through it. The overflow channels are inclined and communicate with the catheter. The overflow channels are used to guide the urine in the catheter into the bag.
[0009] Multiple flow-blocking valves are disposed at the outlet end of the overflow channel. The flow-blocking valves are used to seal the outlet end of the overflow channel when the bag is squeezed, so that the urine in the bag cannot flow back into the catheter.
[0010] In a preferred embodiment, a conical bag is integrally provided inside the bag, which divides the bag into a buffer chamber and a liquid storage chamber. The anti-backflow block is located in the buffer chamber, and the conical bag is used to separate the anti-backflow block from the urine in the bag.
[0011] As a preferred embodiment, the outlet end of the conical bag is integrally provided with a flat opening channel, which is used to prevent urine in the liquid storage chamber from entering the buffer chamber.
[0012] As a preferred embodiment, the overflow channel is configured as a wave-shaped overflow channel.
[0013] In a preferred embodiment, the outlet end of the overflow channel is located at the bottom end of the anti-backflow block.
[0014] As a preferred embodiment, at least two support mesh plates are also fixedly connected inside the bag, and the support mesh plates are used to prevent urine backflow caused by the bag being squeezed.
[0015] In a preferred embodiment, a drain pipe is also connected to the bottom of the bag, and a sealing plug is detachably connected to the end of the drain pipe. The drain pipe is used to drain urine from the bag.
[0016] As a preferred embodiment, the drain pipe is also connected to a clip, which is used to seal and block the drain pipe.
[0017] As a preferred embodiment, the bag is further provided with a scale, which is used to indicate the amount of urine in the bag.
[0018] As a preferred embodiment, the bag body is further provided with a hook for hanging the bag body.
[0019] By adopting the above-mentioned technology, the beneficial effects of this utility model compared with the prior art are as follows:
[0020] In this invention, urine in the catheter overflows into the bag through multiple overflow channels, preventing noise when urine enters the bag. By installing a flow-blocking valve at the outlet of the overflow channel, the overflow channel allows for one-way flow, preventing urine in the bag from flowing back into the catheter through the overflow channel, thus avoiding backflow of urine after the urine bag is squeezed. Attached Figure Description
[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 This is a schematic diagram of the structure of this application;
[0023] Figure 2 This is a cross-sectional view of the anti-backflow block of this application;
[0024] Figure 3 This is a schematic diagram of the drain pipe connection in this application; Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.
[0026] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0027] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0028] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0029] Examples, such as Figures 1-3 As shown,
[0030] A backflow prevention urine bag includes a bag body 1 for storing urine, a catheter 11 being connected through the bag body 1, and further includes:
[0031] An anti-backflow block 2 is disposed inside the bag body 1. The anti-backflow block 2 has multiple overflow channels 21 through it. The overflow channels 21 are inclined and are connected to the urinary catheter 11. The overflow channels 21 are used to guide the urine in the urinary catheter 11 into the bag body 1.
[0032] Multiple flow-blocking valves 3 are disposed at the outlet end of the overflow channel 21. The flow-blocking valves 3 are used to seal the outlet end of the overflow channel 21 when the bag body 1 is squeezed, so that the urine in the bag body 1 cannot flow back into the catheter 11.
[0033] During catheterization, urine flows from the catheter 11 into multiple overflow channels 21 of the anti-backflow block 2. The pressure of the urine in the catheter 11 supports and opens the flow-blocking valve 3, allowing the urine in the catheter 11 to overflow into the bag 1 through the multiple overflow channels 21. This overflow method avoids the noise caused by urine entering the bag 1, thus avoiding embarrassment for the patient during urination. When there is no urine in the catheter 11, the multiple flow-blocking valves 3 close the outlet end of the overflow channel 21, preventing urine from flowing back into the catheter 11 when the bag 1 is tilted or turned over. When the bag 1 is squeezed, the urine in the bag 1... The liquid-push flow-blocking valve 3 is tightly fitted to the outlet end of the overflow channel 21, so that when the bag body 1 is squeezed, the urine in the bag body 1 cannot flow back into the catheter 11 through the overflow channel 21, thereby avoiding urine backflow and leakage. In this technical solution, the urine in the catheter 11 overflows into the bag body 1 through multiple overflow channels 21, avoiding the sound caused when the urine enters the bag body 1. By setting the flow-blocking valve 3 at the outlet end of the overflow channel 21, the overflow channel 21 is made to flow in one direction, and the urine in the bag body 1 cannot flow back into the catheter 11 through the overflow channel 21, thus avoiding the situation of urine backflow after the urine bag is squeezed.
[0034] As a preferred embodiment, a conical bag 4 is integrally provided inside the bag body 1. The conical bag 4 divides the inside of the bag body 1 into a buffer chamber 41 and a liquid storage chamber 42. The anti-backflow block 2 is located in the buffer chamber 41. The conical bag 4 is used to separate the anti-backflow block 2 from the urine in the bag body 1.
[0035] When the bag 1 is tilted or flipped, the urine inside the bag 1 flows to the top and puts pressure on the flow-blocking valve 3, causing the flow-blocking valve 3 to fail to open normally, and the urine in the overflow channel 21 cannot overflow into the bag 1. Therefore, a conical bag 4 is integrally installed inside the bag 1. The conical bag 4 divides the inside of the bag 1 into a buffer chamber 41 and a liquid storage chamber 42. The anti-backflow block 2 is located in the buffer chamber 41. When the urine in the catheter 11 overflows into the bag 1 through multiple overflow channels 21, the urine first enters the buffer chamber 41, and then enters the liquid storage chamber 42 from the buffer chamber 41. When the bag 1 is tilted or flipped, the conical bag 4 prevents the urine in the liquid storage chamber 42 from entering the buffer chamber 41, thereby preventing the urine in the bag 1 from blocking the flow-blocking valve 3 from opening normally. This ensures that when the bag 1 is tilted or flipped, the urine in the catheter 11 can still overflow into the bag 1 for storage through multiple overflow channels 21.
[0036] As a preferred embodiment, the outlet end of the conical bag 4 is integrally provided with a flat opening channel 43, which is used to prevent urine in the liquid storage chamber 42 from entering the buffer chamber 41.
[0037] When the bag 1 is squeezed, the urine in the storage chamber 42 will enter the buffer chamber 41 from the outlet end of the conical bag 4. The backflow of urine into the buffer chamber 41 will block the normal opening of the flow-blocking valve 3. Therefore, a flat channel 43 is integrally provided at the outlet end of the conical bag 4. When the urine enters the storage chamber 42 from the buffer chamber 41, the urine in the buffer chamber 41 will open the flat channel 43 and enter the storage chamber 42. When there is no urine in the buffer chamber 41, the flat channel 43 is in a flat state. When the bag 1 is squeezed, the urine in the storage chamber 42 is difficult to open the flat channel 43, thereby preventing the urine in the storage chamber 42 from flowing back into the buffer chamber 41. This ensures that when the bag 1 is squeezed, the urine in the catheter 11 can still overflow into the buffer chamber 41 for storage through multiple overflow channels 21.
[0038] As a preferred embodiment, the overflow channel 21 is configured as a wavy overflow channel. This configuration obstructs the backflow path of urine in the overflow channel 21, requiring a greater pressure for urine to flow back into the catheter 11 after entering the wavy overflow channel, thereby further enhancing the backflow prevention effect.
[0039] In a preferred embodiment, the outlet end of the overflow channel 21 is located at the bottom end of the anti-backflow block 2. By setting the outlet end of the overflow channel 21 at the bottom end of the anti-backflow block 2, the outlet end of the overflow channel 21 is prevented from coming into contact with the inner wall of the bag body 1, thus avoiding the difficulty in opening the flow-blocking valve plate 3 and ensuring the flow performance of the overflow channel 21.
[0040] As a preferred embodiment, at least two support mesh plates 5 are fixedly connected inside the bag body 1. The support mesh plates 5 are used to prevent urine backflow caused by the bag body 1 being squeezed.
[0041] When the bag body 1 is subjected to large compressive force, the conical bag 4 and the flow-blocking valve plate 3 inside the bag body 1 will be pushed, causing the conical bag 4 and the flow-blocking valve plate 3 to jam or be damaged. In severe cases, the bag body 1 may be ruptured and damaged. Therefore, at least two support mesh plates 5 are fixedly connected inside the bag body 1. The support mesh plates 5 ensure the flow performance inside the bag body 1 and provide support inside the bag body 1 to avoid the bag body 1 being subjected to large compressive force.
[0042] As a preferred embodiment, the bottom end of the bag body 1 is also connected to a drain pipe 6, and the end of the drain pipe 6 is detachably connected to a sealing plug 61. The drain pipe 6 is used to drain the urine in the bag body 1.
[0043] When patients require prolonged catheterization, the bag 1 needs to be reused multiple times. Therefore, a drain tube 6 is connected to the bottom of the bag 1, and a sealing plug 61 is detachably connected to the end of the drain tube 6. When the bag 1 stores urine, the end of the drain tube 6 is sealed by the sealing plug 61. When the urine in the bag 1 needs to be drained, the sealing plug 61 at the end of the drain tube 6 is removed, and the urine in the bag 1 is drained through the drain tube 6.
[0044] In a preferred embodiment, the drain pipe 6 is also connected to a clip 7, which is used to seal and block the drain pipe 6.
[0045] When urine is drained from bag 1, the urine inside bag 1 will spray out the moment the medical staff removes the sealing plug 61 at the end of the drain tube 6, causing contamination on the ground and / or the medical staff's clothing. Therefore, a clip 7 is also connected to the drain tube 6. When urine needs to be drained from bag 1, the clip 7 engages to seal and block the drain tube 6. Then the sealing plug 61 at the end of the drain tube 6 is removed, and then the clip 7 is opened, allowing the urine inside bag 1 to drain out through the drain tube 6, thus preventing contamination during urine discharge. Furthermore, when urine is stored in bag 1, the clip 7 is engaged, and the clip 7, together with the sealing plug 61, forms a double seal on the drain tube 6, preventing leakage during urine storage in bag 1.
[0046] In a preferred embodiment, the bag 1 is further provided with a scale 8, which is used to indicate the amount of urine in the bag 1. The scale 8 on the bag 1 allows medical staff to intuitively display the amount of urine in the bag 1.
[0047] In a preferred embodiment, the bag body 1 is further provided with a hook 9 for hanging the bag body 1. The hook 9 facilitates hanging the bag body 1 and ensures its stability when hung.
[0048] The above description is merely a preferred embodiment of the utility model and is not intended to limit the technical solution of the utility model. For those skilled in the art, the utility model can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the technical solution of the utility model should be included within the protection scope of the utility model.
Claims
1. An anti-reflux urine bag comprising a bag body for storing urine, a catheter being connected to the bag body, characterized in that, Also comprising: An anti-reflux block is arranged in the bag body, the anti-reflux block is provided with a plurality of overflow channels, the overflow channels are arranged obliquely, the overflow channels are communicated with the catheter, and the overflow channels are used to guide the urine in the catheter into the bag body; A plurality of flow blocking valve pieces are arranged at the outlet end of the overflow channel, the flow blocking valve pieces are used to close the outlet end of the overflow channel when the bag body is squeezed, so that the urine in the bag body cannot flow back into the catheter.
2. The anti-reflux urine bag according to claim 1, characterized in that The bag body is also integrally provided with a conical cylinder bag, the conical cylinder bag separates the bag body into a buffer chamber and a liquid storage chamber, the anti-reflux block is located in the buffer chamber, and the conical cylinder bag is used to separate the anti-reflux block from the urine in the bag body.
3. The anti-reflux urine bag according to claim 2, characterized in that The outlet end of the conical cylinder bag is integrally provided with a flat mouth channel, and the flat mouth channel is used to prevent the urine in the liquid storage chamber from entering the buffer chamber.
4. The anti-reflux urinary bag according to claim 1, characterized in that The overflow channel is arranged in a wave shape.
5. The anti-reflux urinary bag according to claim 1, characterized in that The outlet end of the overflow channel is located at the bottom end of the anti-reflux block.
6. The anti-reflux urinary bag of claim 1, wherein The bag body is also fixedly connected with at least two support net plates, the support net plates are used to prevent the urine from flowing back after the bag body is squeezed.
7. The anti-reflux urinary bag according to claim 1, characterized in that The bottom end of the bag body is also throughly connected with a drainage pipe, the distal end of the drainage pipe is detachably connected with a sealing plug, and the drainage pipe is used to drain the urine in the bag body.
8. The anti-reflux urine bag according to claim 7, characterized in that The drainage pipe is also connected with a buckle clamp, and the buckle clamp is used to close and block the drainage pipe.
9. The anti-reflux urinary bag of claim 1, wherein The bag body is also provided with a scale, and the scale is used to identify the amount of urine in the bag body.
10. The anti-reflux urinary bag of claim 1, wherein The bag body is also provided with a hanging buckle, and the hanging buckle is used to hang the bag body.
Citation Information
Patent Citations
Anti-backflow and anti-falling urine bag
CN220513202U