A urine collection bag that prevents backflow

Abstract

This invention belongs to the field of medical supplies, specifically a urine collection bag to prevent backflow. It includes a collection bag, an interface, a drainage tube, a drain outlet, a shell, a sealing partition, a drainage tube, and a superabsorbent resin block. When the urine volume inside the collection bag increases, urine flows into the drainage tube. The liquid column inside the drainage tube rises along with the increasing urine volume inside the collection bag. When the urine volume inside the collection bag reaches the shell, the urine inside the drainage tube enters the shell and is absorbed by the superabsorbent resin block. This causes the superabsorbent resin block to absorb water and expand, crushing the sealing partition and allowing the superabsorbent resin block to enter the collection bag. There, it absorbs the urine, solidifies it, and reduces its fluidity, thereby reducing the probability of urine backflow and lowering the likelihood of urinary leakage, urinary tract infections, and discomfort for the patient.

Description

Technical Field

[0001] This invention belongs to the field of medical supplies, specifically a urine collection bag that prevents backflow. Background Technology

[0002] In hospitals, a large number of patients are unable to move on their own due to injury or illness and need to stay in bed for a long time. Therefore, when these patients are unable to go to the toilet, urine collection bags are needed to help them urinate. Existing urine collection bags mainly consist of a collection bag, a drain outlet, a drainage tube, an interface, and a drainage clamp.

[0003] When patients in the hospital need to use urine collection bags, their urine is collected and stored in the collection bag through a drainage tube. When the urine in the collection bag reaches a certain level, medical staff or accompanying family members need to empty the urine from the collection bag to avoid excessive urine accumulation, which could cause urine backflow, urinary leakage, urinary tract infections, and patient discomfort.

[0004] Some patients need to drink a lot of water every day, and the hospital dinners are mainly light white porridge, which causes patients to excrete a lot of urine at night. At night, there are fewer medical staff and family members accompanying patients need to sleep, which makes it impossible to empty the urine collection bags in time. This results in a relatively large amount of urine collected in the urine collection bags, increasing the probability of urine backflow inside the urine collection bags, and increasing the probability of urinary leakage, urinary tract infection, and discomfort for patients.

[0005] Therefore, the present invention provides a urine collection bag that prevents backflow. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by this invention to solve its technical problem is as follows: A backflow prevention urine collection bag, comprising a collection bag, an interface, a drainage tube, a drain outlet, and an anti-backflow unit; the top of the collection bag is connected to the interface, the top of the interface is connected to the drainage tube, the bottom of the collection bag is connected to the drain outlet, and a valve is provided in the middle of the drain outlet; an anti-backflow unit is provided on the top of one side of the collection bag; the anti-backflow unit includes a shell, a sealing partition, a liquid guide tube, and a superabsorbent resin block; the shell is fixedly connected to one side of the collection bag, and a sealing partition is fixedly connected to the side of the shell near the collection bag; a through groove is opened in the inner circle of the shell, and the inner wall of the through groove is fixedly connected to the outer circle of the shell; liquid guide tubes are connected to both sides of the bottom of the shell, the liquid guide tubes penetrate the sealing partition, and the bottom end of the liquid guide tube is located at the bottom of the collection bag; the interior of the shell is filled with a superabsorbent resin block; during operation, the patient's urine is collected and stored in the collection bag through the drainage tube; when the urine in the collection bag reaches a certain level... Afterwards, medical staff or accompanying family members need to empty the urine from the collection bag to prevent excessive urine accumulation, which could lead to reflux, urinary incontinence, urinary tract infections, and patient discomfort. At night, when medical staff are less available and accompanying family members need to sleep, the collection bag may not be emptied promptly. This can cause an increase in urine volume. If the urine is not emptied in time, it flows into the drainage tube. The liquid column inside the drainage tube rises along with the urine in the collection bag. When the urine level reaches the casing, the urine from the drainage tube enters the casing and is absorbed by the superabsorbent polymer (SAP) block. This causes the SAP block to expand and crush the sealing partition, allowing more SAP to enter the collection bag and absorb the remaining urine. This solidifies the urine, reducing its fluidity and thus lowering the probability of reflux, urinary incontinence, urinary tract infections, and patient discomfort.

[0008] Preferably, a mounting base is fixed to the bottom of the housing, and multiple mounting holes are evenly distributed inside the mounting base. A connecting groove is formed in the middle of the mounting base, and the connecting groove extends through the multiple mounting holes. The top of the liquid guide tube communicates with the connecting groove. A sliding column is slidably installed inside the mounting hole, and a superabsorbent resin column is slidably installed at the end of the mounting hole away from the sealing partition. During operation, when urine from inside the liquid guide tube enters the housing, the urine enters the mounting hole through the connecting groove, causing the superabsorbent resin column to absorb water and expand. This pushes the sliding column towards the sealing partition, causing multiple sliding columns to impact the sealing partition, resulting in the sealing partition breaking. This allows the superabsorbent resin block to come into large-area contact with the urine inside the collection bag, thereby improving the water absorption efficiency of the superabsorbent resin block and subsequently improving the solidification efficiency of the urine inside the collection bag.

[0009] Preferably, a cross-shaped cone is fixed to one end of the sliding column near the sealing partition, and the outer ring of the cross-shaped cone has multiple steps. The cross-shaped cone improves the penetration effect of the sealing partition. At the same time, the cross shape of the cross-shaped cone and the multiple steps allow the urine inside the collection bag to quickly enter the interior of the shell from the groove of the cross-shaped cone, thereby improving the efficiency of urine entering the interior of the shell.

[0010] Preferably, the sealing partition has grid-like indentations on both sides; the indentations allow the sealing partition to break along the indentations after being impacted, thus increasing the channels generated when the sealing partition breaks.

[0011] Preferably, the outer ring of the liquid guide tube is uniformly fixed with multiple elastic rings, and the elastic rings are fixed to the inner wall of the collection bag through multiple elastic plates. The elastic rings ensure that the liquid guide tube maintains a circular structure, reducing the impact of urine entering the liquid guide tube due to flattening. The elastic plates fix the liquid guide tube to the inner wall of the collection bag, while ensuring that the liquid guide tube has a certain degree of mobility, reducing the probability of the liquid guide tube floating with urine.

[0012] Preferably, a plurality of sleeves are fixedly connected to the inside of the housing on the side away from the collection bag, and springs are slidably installed inside the sleeves. The springs are located between the superabsorbent resin block and the inner wall of the housing. By means of the springs, after the sealing partition is broken, the springs return to their original position and push the superabsorbent resin block into the inside of the collection bag, thereby improving the efficiency of the superabsorbent resin block entering the inside of the collection bag and reducing the probability that the superabsorbent resin block cannot enter the inside of the collection bag.

[0013] Preferably, both ends of the connecting groove have grooves on their bottom surfaces, which connect to the top of the liquid guide tube. Electrode plates are fixed to both sides of the bottom surface of one end of the groove, penetrating the outer wall of the housing. A button battery is fixed to the outer wall of the housing. One electrode plate is connected to one electrode of the button battery via a wire. A buzzer is fixed to the outer wall of the housing, and the other electrode plate is connected to one electrode of the buzzer via a wire. The other electrode of the button battery is connected to the other electrode of the buzzer via a wire. During operation, when urine from inside the liquid guide tube enters the housing, the urine enters the groove. At this time, the urine does not come into contact with the high-absorbency... The water-absorbing resin column connects to the electrode plates on both sides, forming a complete circuit with the electrode plates, button battery, and buzzer. When the buzzer is energized, it produces an audible sound to alert medical staff and family members that the urine collection bag needs to be emptied. This timely emptying prevents the superabsorbent resin column and block from absorbing urine. If urine is not emptied promptly, it overflows the groove, coming into contact with the superabsorbent resin column for absorption and solidification. This design alerts when the collection bag is full, reducing the frequency of bag replacements and extending its lifespan.

[0014] Preferably, a fixed connector is fixedly connected to the top of the interface, a movable connector is fixedly connected to the bottom of the drainage tube, and an insertion tube is connected to the bottom of the movable connector. The outer wall of the insertion tube slides in fit with the inner wall of the top of the fixed connector. Multiple fixing sealing rings are uniformly fixedly connected to the inner wall of the top of the fixed connector. An inner cavity is opened inside the fixed connector, and a circular plate is fixedly connected to the middle of the inner cavity. Multiple straight grooves are opened around the inside of the circular plate. A butterfly-shaped diaphragm is fixedly connected to the middle of the bottom surface of the circular plate, and multiple hollow floats are uniformly fixedly connected to the outer circumference of the bottom of the butterfly-shaped diaphragm. During installation, The movable connector connects to the fixed connector, allowing the cannula to be inserted into the fixed connector, thus connecting the drainage tube to the interface. When urine enters the movable connector through the drainage tube, it passes through the straight groove of the circular plate, squeezing the butterfly diaphragm. The butterfly diaphragm's own weight causes it to bend downwards, allowing the urine to smoothly enter the collection bag. When urine flows back into the collection bag, it enters the inner cavity of the movable connector, causing the hollow float to generate buoyancy. This causes the outer ring of the butterfly diaphragm to bend upwards, sealing the straight groove of the circular plate and preventing the backflow of urine.

[0015] Preferably, the fixed connector has an annular cavity in the middle, and an elastic cone is fixedly connected to the top outer ring of the annular cavity. The bottom of the elastic cone has multiple slots, and the inner wall of the elastic cone slides in fit with the outer wall of the insertion tube. When it is necessary to pour out the urine, the moving connector is separated from the fixed connector, so that the insertion tube is separated from the elastic cone, so that the elastic cone is reset and the fixed connector is sealed, thereby reducing the probability of urine leakage inside the collection bag.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. The present invention provides an anti-backflow urine collection bag, comprising a shell, a sealing partition, a liquid guide tube, and a superabsorbent resin block. When the urine volume inside the collection bag increases, the urine flows into the liquid guide tube, and the liquid column inside the guide tube rises along with the increase in urine volume inside the collection bag. When the urine volume inside the collection bag reaches the shell, the urine inside the guide tube enters the interior of the shell and is absorbed by the superabsorbent resin block. This causes the superabsorbent resin block to absorb water and expand, crushing the sealing partition and allowing the superabsorbent resin block to enter the interior of the collection bag. There, the superabsorbent resin block absorbs the urine inside the collection bag, solidifies the urine, and reduces its fluidity, thereby reducing the probability of urine backflow and lowering the probability of urinary leakage, urinary tract infections, and discomfort for the patient.

[0018] 2. The anti-backflow urine collection bag of the present invention comprises electrode plates, a button battery, and a buzzer. When urine from inside the drainage tube enters the interior of the casing, it flows into the groove. At this point, the urine does not contact the superabsorbent resin column. The urine connects to the electrode plates on both sides, forming a complete circuit with the electrode plates, button battery, and buzzer. This causes the buzzer to be energized and produce an audible sound, reminding medical staff and accompanying family members that the urine inside the collection bag needs to be emptied. This timely emptying prevents the superabsorbent resin column and block from absorbing urine. If urine is not emptied promptly, the urine overflows the groove, contacting the superabsorbent resin column for absorption and solidification. This provides a reminder when there is excessive urine inside the collection bag, reducing the frequency of bag replacement and extending its lifespan. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] Figure 1 This is a perspective view of Embodiment 1 of the present invention;

[0021] Figure 2 This is a cross-sectional view of the anti-backflow unit in Embodiment 1 of the present invention;

[0022] Figure 3 This is a perspective view of the anti-backflow unit in Embodiment 1 of the present invention;

[0023] Figure 4 This is an exploded view of the anti-backflow unit in Embodiment 1 of the present invention;

[0024] Figure 5 This is a perspective view of the cross-shaped cone in Embodiment 1 of the present invention;

[0025] Figure 6This is a cross-sectional view of the shell in Embodiment 1 of the present invention;

[0026] Figure 7 This is a cross-sectional view of the fixed joint and the moving joint in Embodiment 1 of the present invention;

[0027] Figure 8 This is a perspective view of Embodiment 2 of the present invention;

[0028] In the diagram: 1. Collection bag; 2. Interface; 3. Drainage tube; 4. Drain outlet; 5. Shell; 6. Sealing partition; 7. Liquid guide tube; 8. Super absorbent resin block; 9. Mounting base; 10. Mounting hole; 11. Connecting groove; 12. Sliding column; 13. Super absorbent resin column; 14. Cross-shaped cone; 15. Indentation; 16. Elastic ring; 17. Elastic sheet; 18. Sleeve; 19. Spring; 20. Groove; 21. Electrode sheet; 22. Button battery; 23. Buzzer; 24. Fixed connector; 25. Moving connector; 26. Insertion tube; 27. Inner cavity; 28. Circular plate; 29. ​​Butterfly diaphragm; 30. Hollow float; 31. Circular cavity; 32. Elastic cone; 33. Velcro; 34. Elastic strip. Detailed Implementation

[0029] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0030] Example 1

[0031] like Figures 1 to 2As shown in the figure, an anti-backflow urine collection bag according to an embodiment of the present invention includes a collection bag 1, an interface 2, a drainage tube 3, a drain outlet 4, and an anti-backflow unit; the top of the collection bag 1 is connected to the interface 2, the top of the interface 2 is connected to the drainage tube 3, the bottom of the collection bag 1 is connected to the drain outlet 4, and a valve is provided in the middle of the drain outlet 4; an anti-backflow unit is provided on the top of one side of the collection bag 1; the anti-backflow unit includes a shell 5, a sealing partition 6, a liquid guiding tube 7, and a super absorbent resin block 8; a... The housing 5 has a sealing partition 6 fixedly connected to the side of the housing 5 near the collection bag 1. The portion of the collection bag 1 located within the inner ring of the housing 5 has a through groove, and the inner wall of the through groove is fixedly connected to the outer ring of the housing 5. Both sides of the bottom of the housing 5 are connected to liquid guide tubes 7, which pass through the sealing partition 6, with the bottom end of the liquid guide tube 7 located at the bottom of the collection bag 1. The interior of the housing 5 is filled with superabsorbent resin blocks 8. During operation, the patient's urine is collected and stored in the collection bag 1 through the drainage tube 3. When the urine in the collection bag 1 reaches a certain level... After the urine collection bag 1 is emptyed, medical staff or accompanying family members need to empty it to prevent excessive urine buildup, which could cause backflow, urinary incontinence, urinary tract infections, and patient discomfort. At night, when medical staff are less available and accompanying family members need to sleep, the urine collection bag 1 may not be emptied promptly. This can lead to an increase in urine volume in the bag, which then flows into the drainage tube 7. The liquid column inside the drainage tube 7 then accompanies the urine in the collection bag. As the urine level inside the collection bag increases, it rises. When the urine level inside the collection bag 1 reaches the shell 5, the urine inside the drainage tube 7 enters the interior of the shell 5 and is absorbed by the superabsorbent resin block 8. This causes the superabsorbent resin block 8 to absorb water and expand, crushing the sealing partition 6. The superabsorbent resin block 8 then enters the interior of the collection bag 1, absorbing the urine inside and solidifying it. This reduces the fluidity of the urine, thereby reducing the probability of urine backflow and lowering the probability of urinary leakage, urinary tract infections, and discomfort for the patient.

[0032] like Figure 2 , Figure 4 and Figure 6As shown, a mounting base 9 is fixedly connected to the bottom of the housing 5. Multiple mounting holes 10 are evenly distributed inside the mounting base 9. A connecting groove 11 is formed in the middle of the mounting base 9, penetrating through the multiple mounting holes 10. The top of the liquid guide tube 7 communicates with the connecting groove 11. A sliding column 12 is slidably installed inside the mounting hole 10. A superabsorbent resin column 13 is slidably installed at the end of the mounting hole 10 away from the sealing partition 6. During operation, when urine from inside the liquid guide tube 7 enters the housing 5, the urine enters the mounting hole 10 through the connecting groove 11, causing the superabsorbent resin column 13 to absorb water and expand, pushing the sliding column 12 towards the sealing partition 6. This causes multiple sliding columns 12 to impact the sealing partition 6, causing it to rupture. This allows the superabsorbent resin block 8 to come into large-area contact with the urine inside the collection bag 1, thereby improving the water absorption efficiency of the superabsorbent resin block 8 and consequently improving the solidification efficiency of the urine inside the collection bag 1.

[0033] like Figure 5 As shown, a cross-shaped cone 14 is fixed to one end of the sliding column 12 near the sealing partition 6, and the outer ring of the cross-shaped cone 14 has multiple steps. The cross-shaped cone 14 improves the penetration effect of the sealing partition 6. At the same time, the cross shape and multiple steps of the cross-shaped cone 14 allow the urine inside the collection bag 1 to quickly enter the interior of the shell 5 from the groove of the cross-shaped cone 14, thereby improving the efficiency of urine entering the interior of the shell 5.

[0034] like Figures 2 to 4 As shown, both sides of the sealing partition 6 are provided with grid-like indentations 15; through the indentations 15, the sealing partition 6 can generate a large number of cracks and break along the indentations 15 after being impacted, thereby increasing the channels generated when the sealing partition 6 breaks.

[0035] like Figure 3 , Figure 4 and Figure 6 As shown, multiple elastic rings 16 are uniformly fixed to the outer ring of the liquid guiding tube 7. The elastic rings 16 are fixed to the inner wall of the collection bag 1 through multiple elastic plates 17. The elastic rings 16 make the liquid guiding tube 7 maintain a circular structure, reducing the impact of urine entering the liquid guiding tube 7 due to flattening. The elastic plates 17 fix the liquid guiding tube 7 to the inner wall of the collection bag 1, while ensuring that the liquid guiding tube 7 has a certain degree of mobility, reducing the probability of the liquid guiding tube 7 floating with urine.

[0036] like Figure 2 and Figure 4As shown, a plurality of sleeves 18 are fixedly connected to the inside of the housing 5 away from the collection bag 1. A spring 19 is slidably installed inside the sleeve 18. The spring 19 is located between the superabsorbent resin block 8 and the inner wall of the housing 5. By setting the spring 19, after the sealing partition 6 is broken, the spring 19 returns to its original position and pushes the superabsorbent resin block 8 into the inside of the collection bag 1, thereby improving the efficiency of the superabsorbent resin block 8 entering the inside of the collection bag 1, and at the same time reducing the probability that the superabsorbent resin block 8 cannot enter the inside of the collection bag 1.

[0037] like Figure 1 , Figure 4 and Figure 6 As shown, grooves 20 are formed on the bottom surfaces of both ends of the connecting groove 11. The grooves 20 connect to the top of the liquid guiding tube 7. Electrode plates 21 are fixed to both sides of the bottom surface of one end of the groove 20. The electrode plates 21 on both sides penetrate the outer wall of the housing 5. A button battery 22 is fixed to the outer wall of the housing 5. One electrode plate 21 is connected to one electrode of the button battery 22 through a wire. A buzzer 23 is fixed to the outer wall of the housing 5. The other electrode plate 21 is connected to one electrode of the buzzer 23 through a wire. The other electrode of the button battery 22 is connected to the other electrode of the buzzer 23 through a wire. During operation, when urine from inside the liquid guiding tube 7 enters the interior of the housing 5, the urine enters the interior of the groove 20. At this time, the urine does not connect to the outer wall of the housing 5. When the superabsorbent resin column 13 is touched, the urine connects to the electrode plates 21 on both sides, forming a complete circuit with the electrode plates 21, button battery 22, and buzzer 23. This causes the buzzer 23 to be energized and produce a buzzer, reminding medical staff and accompanying family members that the urine inside the collection bag 1 needs to be emptied. This timely emptying prevents the superabsorbent resin column 13 and superabsorbent resin block 8 from absorbing urine. If the urine is not emptied in time, the urine inside the groove 20 overflows, contacting the superabsorbent resin column 13 for absorption and solidification. This serves as a reminder when there is too much urine inside the collection bag 1, reducing the frequency of bag replacements and extending its lifespan.

[0038] like Figure 1 and Figure 7As shown, a fixed connector 24 is fixedly connected to the top of the interface 2, and a movable connector 25 is fixedly connected to the bottom of the drainage tube 3. A tube 26 is connected to the bottom of the movable connector 25. The outer wall of the tube 26 slides against the inner wall of the top of the fixed connector 24. Multiple fixing sealing rings are evenly fixed to the inner wall of the top of the fixed connector 24. An inner cavity 27 is formed inside the fixed connector 24. A circular plate 28 is fixedly connected to the center of the inner cavity 27. Multiple straight grooves are formed around the inside of the circular plate 28. A butterfly-shaped diaphragm 29 is fixedly connected to the center of the bottom surface of the circular plate 28. Multiple hollow floats 30 are evenly fixed to the outer circumference of the bottom of the butterfly-shaped diaphragm 29. During installation, [the following steps are taken]. The movable connector 25 is connected to the fixed connector 24, allowing the insertion tube 26 to be inserted into the interior of the fixed connector 24, thus connecting the drainage tube 3 to the interface 2. When urine enters the interior of the movable connector 25 through the drainage tube 3, the urine passes through the straight groove of the circular plate 28, squeezing the butterfly diaphragm 29. Due to the weight of the butterfly diaphragm 29, the butterfly diaphragm 29 bends downward, allowing the urine to smoothly enter the interior of the collection bag 1. When urine flows back into the collection bag 1, the urine enters the interior cavity 27 of the movable connector 25, causing the hollow float 30 to generate buoyancy, which drives the outer ring of the butterfly diaphragm 29 to bend upward, sealing the straight groove of the circular plate 28, thereby preventing the backflow of urine.

[0039] like Figure 7 As shown, the fixed connector 24 has an annular cavity 31 in the middle, and an elastic cone 32 is fixedly connected to the top outer ring of the annular cavity 31. The bottom of the elastic cone 32 has multiple slots, and the inner wall of the elastic cone 32 slides in fit with the outer wall of the insertion tube 26. When it is necessary to pour out urine, the moving connector 25 is separated from the fixed connector 24, so that the insertion tube 26 is separated from the elastic cone 32, so that the elastic cone 32 is reset and the fixed connector 24 is sealed, thereby reducing the probability of urine leakage inside the collection bag 1.

[0040] Example 2

[0041] like Figure 8 As shown in the comparative embodiment one, another embodiment of the present invention is as follows: a Velcro 33 is fixedly attached to the middle of the side of the collection bag 1 away from the shell 5, and an elastic strip 34 is fixedly attached to the other side of the side of the collection bag 1 away from the shell 5, and a ring is fixedly attached to the end of the elastic strip 34 away from the collection bag 1; when the patient needs to move, the elastic strip 34 and the Velcro 33 are used to fix the collection bag 1 to the patient's leg, which facilitates the patient's movement. At the same time, it is easy to hide the collection bag 1, reducing the patient's embarrassment.

[0042] During operation: Connect the movable connector 25 to the fixed connector 24 so that the insertion tube 26 is inserted into the interior of the fixed connector 24, and the drainage tube 3 is connected to the interface 2; when urine enters the interior of the movable connector 25 through the drainage tube 3, the urine passes through the straight groove of the circular plate 28, squeezes the butterfly diaphragm 29, and the butterfly diaphragm 29 itself is bent downward by its own weight, so that the urine can smoothly enter the interior of the collection bag 1;

[0043] When the urine volume inside collection bag 1 increases, urine flows into the drainage tube 7. The liquid column inside the drainage tube 7 rises along with the increased urine volume inside collection bag 1. When the urine inside the drainage tube 7 enters the interior of the housing 5, it enters the interior of the groove 20. At this time, the urine does not come into contact with the superabsorbent resin column 13. The urine connects to the electrode plates 21 on both sides, forming a complete circuit with the electrode plates 21, the button battery 22, and the buzzer 23. This causes the buzzer 23 to be energized and produce a buzzer, which is used to remind medical staff and accompanying family members that the urine inside collection bag 1 needs to be emptied. At this time, after reminding medical staff and accompanying family members to empty the urine inside collection bag 1 in time, the superabsorbent resin column 13 will not be emptied. 3. The superabsorbent resin block 8 absorbs urine. When urine is not emptied in time, the urine inside the groove 20 overflows the groove 20 and enters the installation hole 10 through the connecting groove 11. This causes the superabsorbent resin column 13 to absorb water and expand, pushing the cross-shaped cone 14 to slide towards the sealing partition 6. This causes multiple cross-shaped cones 14 to impact the sealing partition 6, causing the sealing partition 6 to rupture. The spring 19 returns to its original position and pushes the superabsorbent resin block 8 into the collection bag 1. The urine inside the collection bag 1 is absorbed by the superabsorbent resin block 8, causing the urine to solidify and reducing its fluidity. This reduces the probability of urine backflow and lowers the probability of urine leakage, urinary tract infection, and discomfort for the patient.

[0044] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0045] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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 limiting the scope of protection of this invention.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A urine collection bag to prevent backflow, characterized in that: It includes a collection bag (1), an interface (2), a drainage tube (3), a drain port (4), and an anti-backflow unit; the top of the collection bag (1) is connected to the interface (2), the top of the interface (2) is connected to the drainage tube (3), the bottom of the collection bag (1) is connected to the drain port (4), and a valve is provided in the middle of the drain port (4); an anti-backflow unit is provided on the top of one side of the collection bag (1). The anti-backflow unit includes a shell (5), a sealing partition (6), a liquid guide tube (7), and a super absorbent resin block (8). When the urine level inside the collection bag reaches the shell, the urine inside the liquid guide tube enters the shell and is absorbed by the super absorbent resin block. This causes the super absorbent resin block to absorb water and expand, crushing the sealing partition and allowing the super absorbent resin block 8 to enter the collection bag 1 and absorb the urine inside the collection bag 1. The shell (5) is fixed to one side of the collection bag (1), and the sealing partition (6) is fixed to the side of the shell (5) near the collection bag (1). The part of the collection bag (1) located in the inner circle of the shell (5) has a through groove, and the inner wall of the through groove is fixed to the outer circle of the shell (5). The bottom sides of the shell (5) are connected to the liquid guide tube (7), which penetrates the sealing partition (6). The bottom end is located at the bottom of the collection bag (1). The interior of the housing (5) is filled with super absorbent resin blocks (8). The bottom of the housing (5) is fixedly connected to the mounting base (9). The mounting base (9) has multiple mounting holes (10) evenly opened inside. The middle part of the mounting base (9) has a connecting groove (11). The connecting groove (11) passes through multiple mounting holes (10). The top of the liquid guide tube (7) is connected to the connecting groove (11). A sliding column (12) is slidably installed inside the mounting hole (10). A super absorbent resin column (13) is slidably installed at the end of the mounting hole (10) away from the sealing partition (6).

2. The urine collection bag for preventing backflow according to claim 1, characterized in that: The sliding column (12) is fixed to a cross-shaped cone (14) at one end near the sealing partition (6), and the outer ring of the cross-shaped cone (14) has multiple steps.

3. The urine collection bag for preventing backflow according to claim 1, characterized in that: Both sides of the sealing partition (6) are provided with grid-like indentations (15).

4. The urine collection bag for preventing backflow according to claim 1, characterized in that: The outer ring of the liquid guide tube (7) is uniformly fixed with multiple elastic rings (16), and the elastic rings (16) are fixed to the inner wall of the collection bag (1) through multiple elastic sheets (17).

5. The urine collection bag for preventing backflow according to claim 1, characterized in that: Multiple sleeves (18) are fixed to the inside of the housing (5) away from the collection bag (1). A spring (19) is slidably installed inside the sleeve (18). The spring (19) is located between the superabsorbent resin block (8) and the inner wall of the housing (5).

6. The urine collection bag for preventing backflow according to claim 1, characterized in that: The bottom surfaces of both ends of the connecting groove (11) are provided with grooves (20), which are connected to the top of the liquid guide tube (7). Electrode plates (21) are fixed to both sides of the bottom surface of the groove (20) at one end. The electrode plates (21) on both sides penetrate the outer wall of the housing (5). A button battery (22) is fixed to the outer wall of the housing (5). One electrode plate (21) is connected to one end electrode of the button battery (22) through a wire. A buzzer (23) is fixed to the outer wall of the housing (5). The electrode plate (21) on the other side is connected to one end electrode of the buzzer (23) through a wire. The other end electrode of the button battery (22) is connected to the other end electrode of the buzzer (23) through a wire.

7. The urine collection bag for preventing backflow according to claim 1, characterized in that: The top of the interface (2) is fixed with a fixed connector (24), the bottom of the drainage tube (3) is fixed with a movable connector (25), the bottom of the movable connector (25) is connected with an insertion tube (26), the outer wall of the insertion tube (26) slides with the top inner wall of the fixed connector (24), the top inner wall of the fixed connector (24) is uniformly fixed with multiple fixed sealing rings, the fixed connector (24) has an inner cavity (27) inside, the middle of the inner cavity (27) is fixed with a circular plate (28), the inside of the circular plate (28) is surrounded by multiple straight grooves, the bottom center of the circular plate (28) is fixed with a butterfly diaphragm (29), the bottom outer ring of the butterfly diaphragm (29) is uniformly fixed with multiple hollow floats (30).

8. The urine collection bag for preventing backflow according to claim 7, characterized in that: The fixed connector (24) has an annular cavity (31) in the middle. An elastic cone (32) is fixed to the top outer ring of the annular cavity (31). Multiple slots are opened around the bottom of the elastic cone (32). The inner wall of the elastic cone (32) slides with the outer wall of the insertion tube (26).

9. A urine collection bag for preventing backflow according to claim 1, characterized in that: The collection bag (1) is fixed with Velcro (33) on one side of the side away from the shell (5), and an elastic strip (34) is fixed with the other side of the side of the collection bag (1) away from the shell (5), and a buckle is fixed with one end of the elastic strip (34) away from the collection bag (1).

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