Anti-falling catheter
The design of the rotary fastening assembly and the liquid level float switch solves the problems of catheter slippage and urine backflow, achieving a stable connection between the catheter and the urine collection bag and effective urine collection, thus improving patient comfort.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN GAOMING DISTRICT PEOPLES HOSPITAL
- Filing Date
- 2024-12-31
- Publication Date
- 2026-04-28
AI Technical Summary
Existing urinary catheters are prone to slippage, leading to urine leakage, and when the urine bag is full, urine flows back into the bladder, causing infection.
It adopts a rotary fastening assembly, including a connecting sleeve, a buckle and a locking device, and uses a liquid level float switch to prevent urine backflow and ensure a secure connection between the catheter and the urine collection bag.
It effectively prevents the connection between the urinary catheter and the urine collection bag from slipping, avoids urine leakage, and automatically closes when the urine bag is full to prevent urine backflow, thus improving patient comfort.
Smart Images
Figure CN224166697U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical supplies technology, and in particular to an anti-dislodgement urinary catheter. Background Technology
[0002] In clinical practice, long-term indwelling urinary catheters are often required for various reasons. To prevent urinary tract infections and blood clots blocking the catheter, regular bladder irrigation is necessary. Bladder irrigation involves using a catheter to infuse a solution into the bladder, followed by drainage of the urine and solution through the catheter. Currently, clinically used bladder irrigation catheters are secured in the bladder after insertion using a balloon near the catheter tip to prevent dislodgement. A urine bag is connected to the other end of the catheter to collect urine.
[0003] However, existing urinary catheters are usually made of soft or silicone materials and are fixedly connected to the urine collection bag by a plug-in method. When the patient turns over or gets out of bed, the connection between the urinary catheter and the urine collection bag can easily detach with slight dragging or pulling, leading to urine leakage and easily wetting clothes, sheets, etc. At the same time, when the urine collection bag is full, if the patient or doctor does not pay attention to changing it in time, the urine can also flow back into the bladder, causing urinary tract infection. Utility Model Content
[0004] In order to address the technical deficiencies mentioned in the background art, the purpose of this utility model is to provide an anti-dislodgement urinary catheter, which aims to solve the problem of urine leakage caused by easy slippage of existing urinary catheters. At the same time, it can also automatically close the urinary catheter after the urine bag is full of urine, so as to avoid the problem of urine backflow causing urinary tract infection.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A non-dislodgeable urinary catheter includes a tube body and a urine collection bag connected to the end of the tube body. A rotary fastening assembly is movably connected between the tube body and the urine collection bag, with one end of the tube body and one end of the urine collection bag respectively inserted into the rotary fastening assembly. The rotary fastening assembly includes a connecting sleeve, a snap fastener, and a locking element. The connecting sleeve has a hollow cavity structure, and a level float switch for detecting the liquid level in the urine collection bag is installed in the cavity of the connecting sleeve. The level float switch is connected to the connection port of the urine collection bag. The snap fastener is detachably connected to the cavity of the connecting sleeve near the end of the tube body, and multiple snap fastener blocks are circumferentially distributed on the inner wall of the snap fastener. The locking element has an internal thread on its inner side wall and is threaded to the outer side of the connecting sleeve. By rotating the locking element, the snap fastener can be locked or released from the tube body to reinforce the connection between the tube body and the urine collection bag.
[0007] Preferably, the connecting sleeve includes a first connecting section connected to the tube body, a second connecting section connected to the urine collection bag, and a transition section located between the first connecting section and the second connecting section. The outer side of the first connecting section is threadedly connected to the locking member by an external thread. Multiple anti-detachment hooks are evenly arranged on the inner sidewall of the second connecting section. The anti-detachment hooks are integrally formed with the connecting sleeve, and the anti-detachment hooks are arranged away from the opening direction of the connecting sleeve. An annular protrusion is provided on the transition section, and an annular groove is recessed downward between the annular protrusion and the first and second connecting sections.
[0008] Preferably, a sealing ring is provided in the cavity of the connecting sleeve on one side of the fastener, and the sealing ring abuts against the end of the tube body that connects to the connecting sleeve.
[0009] Preferably, the fastener has multiple slots on its circumference, which divide the fastener into multiple independent sheet structures, and an anti-detachment block protrudes outward at one end of the fastener.
[0010] Preferably, the tube is a hollow cylindrical structure, with a urinary catheter hole at one end and a liquid outlet at the other end. The urinary catheter hole is located on the side wall of the tube and is connected to the tube. The liquid outlet is connected to the urine collection bag.
[0011] Preferably, the tube body has an injection hole on the other side of the catheter hole, and a thin-walled air bladder is provided on the outer circumferential surface of the tube body near the injection hole. When not inflated, the thin-walled air bladder is close to the inner wall of the tube body, and expands in a ring shape after inflation.
[0012] Preferably, an air injection port for injecting air into the thin-walled airbag is provided on one side of the liquid outlet. The air injection port is connected to the thin-walled airbag, and an air blowing channel is connected between the air injection port and the thin-walled airbag.
[0013] Preferably, a water inlet for rinsing the bladder is provided on the other side of the liquid outlet. The water inlet and the air inlet are symmetrically arranged, and an infusion pipe is connected between the water inlet and the liquid inlet.
[0014] Preferably, an injection valve is provided to seal the injection port, and one end of the injection valve is connected to the injection port by a pull ring.
[0015] In summary, the beneficial effects of this utility model are as follows:
[0016] This invention features a rotary fastening assembly at the connection between the urinary catheter and the urine collection bag. The combination of locking and snap-fit components ensures a more stable and secure connection, preventing leakage when the patient turns over or gets out of bed. Furthermore, the inclusion of a liquid level float switch within the rotary fastening assembly effectively prevents backflow of urine into the bladder once the urine collection bag is full, thus improving patient comfort. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of the anti-dislodgement urinary catheter of this utility model;
[0018] Figure 2 This is a front view of the anti-dislodgement catheter of this utility model;
[0019] Figure 3 yes Figure 2 A cross-sectional view of the AA plane;
[0020] Figure 4 yes Figure 3 Enlarged view of the structure at point a;
[0021] Figure 5 yes Figure 3 Enlarged view of the structure at point b in the middle;
[0022] Figure 6 This is an exploded view of the rotary fastening assembly in this utility model.
[0023] Explanation of the reference numerals in the figure:
[0024] 1. Tube body; 11. Catheter port; 12. Outlet; 13. Injection port; 14. Air inlet; 15. Water inlet; 2. Urine collection bag; 21. Connection port; 3. Rotary fastening assembly; 31. Connecting sleeve; 311. First connecting section; 3111. External thread; 312. Second connecting section; 3121. Anti-detachment hook; 313. Transition section; 3131. Annular protrusion; 3132. Annular groove; 32. Fastener; 321. Clamping block; 322. Groove; 323. Anti-detachment block; 33. Locking element; 331. Internal thread; 4. Liquid level float switch; 5. Sealing ring; 6. Thin-walled airbag; 7. Air blowing channel; 8. Infusion pipeline; 9. Air injection valve. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.
[0026] Those skilled in the art should understand that, in the disclosure of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "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 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, the above terms should not be construed as limitations on this utility model.
[0027] In the description of this utility model, the use of terms such as "several" means one or more, with "multiple" meaning two or more. Terms like "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of terms like "first," "second," and "third" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, the quantity of indicated technical features, or the sequential relationship between indicated technical features.
[0028] The following is in conjunction with the appendix Figure 1-6 The present invention provides a more detailed description of an embodiment of an anti-dislodgement urinary catheter.
[0029] A non-dislodgeable urinary catheter includes a tube body 1 and a urine collection bag 2 connected to the end of the tube body 1. A rotary fastening assembly 3 is movably connected between the tube body 1 and the urine collection bag 2, and one end of the tube body 1 and one end of the urine collection bag 2 are respectively inserted into the rotary fastening assembly 3. The rotary fastening assembly 3 includes a connecting sleeve 31, a buckle 32, and a locking member 33. The connecting sleeve 31 has a hollow cavity structure, and a level float ball for detecting the liquid level in the urine collection bag 2 is provided in the cavity of the connecting sleeve. 4. The liquid level float switch 4 is connected to the connection port 21 of the urine collection bag 2; the buckle 32 is detachably connected to the cavity of the connecting sleeve near the end of the tube 1, and multiple clamping blocks 321 are distributed circumferentially on the inner wall of the buckle 32; the inner wall of the locking member 33 is provided with an internal thread 331, and the locking member 33 is threaded to the outside of the connecting sleeve. By rotating the locking member 33, the buckle 32 can be locked or released from the tube 1 to strengthen the connection between the tube 1 and the urine collection bag 2.
[0030] Specifically, the rotating fastening assembly 3 works by utilizing the sealing design and connection tightness of its internal structure to achieve quick connection and disconnection between the tube 1 and the urine collection bag 2, thereby effectively improving the stability of the connection between the catheter and the urine collection bag 2. When one end of the tube 1 is inserted into the connecting sleeve, simply rotate the locking member 33 to lock it with the connecting sleeve, thereby locking the buckle 32 inside the connecting sleeve onto the outside of the tube 1 and preventing the tube 1 from slipping out. When disconnection is required, simply loosen the locking member 33 to quickly pull out the tube 1. Similarly, the urine collection bag 2 is also fixed to the other end of the connecting sleeve by a plug-in connection, making it simpler and more convenient to replace the urine collection bag 2. To prevent urine from flowing back into the bladder when the urine collection bag 2 is full, a liquid level float switch 4 is installed inside the connecting sleeve. The liquid level float switch 4 acts as a one-way valve, effectively preventing the backflow of urine into the bladder after the urine collection bag 2 is full, thus preventing urine reflux and infection.
[0031] The liquid level float switch 4 mainly consists of a reed switch and a float. The float is magnetic and is movably connected inside the reed switch. There are one or more reed switches, which are located inside the connecting sleeve. When one end of the tube 1 is inserted into the connecting sleeve, the end of the tube 1 inside the connecting sleeve passes through one or more floats with magnetic material. The connecting sleeve controls the float and the reed switch at corresponding positions in the cavity. The float rises and falls with the urine, and the contact point inside the ball near the starting point of the magnetic spring causes it to open and close. After the urine collection bag 2 is full, the urine flows into the liquid level float switch 4, causing the float to rise to the highest position, thereby controlling the reed switch to close and preventing urine backflow.
[0032] In this embodiment, the connecting sleeve 31 includes a first connecting section 311 connected to the tube body 1, a second connecting section 312 connected to the urine collection bag 2, and a transition section 313 located between the first connecting section 311 and the second connecting section 312. The outer side of the first connecting section 311 is threadedly connected to the locking member 33 by an external thread 3111. Multiple anti-detachment hooks 3121 are evenly arranged on the inner sidewall of the second connecting section 312. The anti-detachment hooks 3121 and the connecting sleeve are integrally formed, and the anti-detachment hooks 3121 are arranged away from the opening direction of the connecting sleeve. An annular protrusion 3131 is provided on the transition section 313. An annular groove 3132 is recessed downward between the annular protrusion 3131 and the first connecting section 311 and the second connecting section 312.
[0033] Specifically, when connecting the first connecting segment 311 to the tube body 1, first loosen the locking member 33 threaded to the outside of the first connecting segment 311, allowing the tube body 1 to be quickly inserted into the cavity of the first connecting segment 311. Then, insert the connecting port 21 of the urine collection bag 2 into the cavity of the second connecting segment 312, and then tighten the locking member 33, so that the buckle 32 can begin to clamp the tube body 1 under the action of the locking member 33, thereby preventing the tube body 1 from falling off. The anti-dislodgement buckle can strengthen the connection between the connecting port 21 of the urine collection bag 2 and the second connecting segment 312, so that both the tube body 1 and the urine collection bag 2 can be firmly connected in the rotary fastening assembly 3, thereby effectively avoiding the problem of the catheter and urine collection bag 2 loosening and falling off when the patient turns over or gets out of bed.
[0034] It is worth noting that, since the tube body 1 and the connecting sleeve adopt a clearance fit, that is, there is a certain gap when the tube body 1 is inserted into the cavity of the connecting sleeve, in order to prevent urine from flowing out from this gap, a sealing ring 5 is also provided in the cavity of the connecting sleeve 31 on one side of the fastener 32. The sealing ring 5 abuts against the end where the tube body 1 and the connecting sleeve 31 are connected. The sealing ring 5 can play a good sealing role, thereby effectively preventing urine from flowing out from the gap between the tube body 1 and the connecting sleeve.
[0035] In this embodiment, the fastener 32 has multiple slots 322 on its circumference, which divide the fastener 32 into multiple independent sheet structures, and an anti-detachment block 323 protrudes outward from one end of the fastener 32.
[0036] Specifically, the fastener 32 is made of plastic material and can fix the liquid outlet 12. When the liquid outlet 12 is inserted into the connecting sleeve, the fastener 32 is located between the liquid outlet 12 and the cavity of the connecting sleeve. Due to the multiple slots 322 on the fastener 32, the fastener 32 is compressed inward when the locking member 33 locks it. At this time, the locking block 321 in the fastener 32 is firmly locked on the side wall of the tube body 1, so that the tube body 1 cannot be removed from the connecting sleeve. In order to prevent the fastener 32 from falling out of the connecting sleeve, an anti-detachment block 323 is set at one end of the fastener 32 to cooperate with the cavity, so that the fastener 32 can be stably embedded in the connecting sleeve.
[0037] In this embodiment, the tube body 1 is a hollow columnar structure, and one end of the tube body 1 is provided with a urinary catheter hole 11 and the other end is provided with a liquid outlet 12. The urinary catheter hole 11 is located on the side wall of the tube body 1 and is connected to the tube body 1; the liquid outlet 12 is connected to the urine collection bag 2.
[0038] Specifically, the purpose of placing the catheter port 11 on the side wall of the tube body 1 is to avoid affecting the insertion of the tube body 1. Since the catheter is made of silicone, if the catheter port 11 is placed at the end of the tube body 1 during insertion into the urethra, some air pressure will be injected into the inner lumen of the tube body 1 after insertion, resulting in a pressure difference between the inside and outside of the tube body 1, which will increase the difficulty of insertion and may also cause urethral damage. Placing the catheter port 11 on the side wall of the tube body 1 effectively avoids this problem. At the same time, the diameter of the outlet 12 at the other end of the tube body 1 is larger than the diameter of the tube body 1. This is for the purpose of better connecting with the urine collection bag 2 and for quickly determining the length of the tube body 1 to be inserted. That is, when the tube body 1 is fully inserted and the outlet 12 is at the urethral opening, the tube body 1 is just entering the bladder, which makes it easier for medical staff to quickly determine whether it has been inserted in place.
[0039] In this embodiment, the tube body 1 has an injection hole 13 on the other side of the catheter hole 11, and a thin-walled airbag 6 is provided on the outer circumferential surface of the tube body 1 near the injection hole 13. When the thin-walled airbag 6 is not inflated, it is tightly attached to the inner wall of the tube body 1, and expands in a ring shape after inflation.
[0040] It is worth noting that the injection port 13 is not connected to the catheter port 11. The catheter port 11 is connected to the cavity of the tube body 1, while the injection port 13 is connected to the inner wall of the tube body 1. The thin-walled balloon 6 located on one side of the injection port 13 is also not connected to the injection port 13. Under normal circumstances, the thin-walled balloon 6 is attached to the outer wall of the tube body 1. When inflated, the thin-walled balloon 6 begins to expand. The expanded thin-walled balloon 6 can be stably locked in place at the urethral opening of the bladder, thereby preventing the tube body 1 from slipping out of the bladder.
[0041] In this embodiment, an air injection port 14 for injecting air into the thin-walled airbag 6 is provided on one side of the liquid outlet 12. The air injection port 14 is connected to the thin-walled airbag 6, and an air blowing channel 7 is connected between the air injection port 14 and the thin-walled airbag 6.
[0042] Specifically, the inflation port 14 is used to inflate the thin-walled balloon 6. An inflation valve 9 is sealed on the inflation port 14, and one end of the inflation valve 9 is connected to the inflation port 14 by a pull ring. In order to prevent gas leakage after the thin-walled balloon 6 is inflated, the inflation valve 9 is set on the inflation port 14. The inflation valve 9 is a one-way valve, that is, air can be injected into the inflation port 14 using a syringe. After the air is injected, the gas cannot flow back out, thus ensuring that the thin-walled balloon 6 is always in an inflated state. When the catheter is removed, the thin-walled balloon 6 can be restored to its initial state simply by aspirating the air again using a syringe.
[0043] In this embodiment, a water inlet 15 for rinsing the bladder is provided on the other side of the liquid outlet 12. The water inlet 15 and the air inlet 14 are symmetrically arranged, and an infusion pipe 8 is connected between the water inlet 15 and the liquid inlet 13.
[0044] Specifically, in order to complete the flushing of the bladder, the infusion set is connected through the water inlet 15 on the tube body 1, so that the flushing fluid enters the infusion channel through the water inlet 15 and is delivered to the infusion hole 13 through the infusion channel, and then enters the bladder to complete the flushing effect. After the flushing is completed, the flushing fluid and urine flow into the tube body 1 through the catheter hole 11, and finally exit from the infusion port and are collected in the urine collection bag 2.
[0045] The working principle of this utility model:
[0046] First, insert the end of the catheter with the catheter port 11 into the urethra until it reaches the bladder. Then, remove the air valve 9 that was sealing the air port 14 and inject air into the air port 14 using a syringe. The air is delivered along the air channel 7 into the thin-walled balloon 6, causing the thin-walled balloon 6 to inflate and thus fix the tube body 1 in the bladder. Then, reseal the air valve 9 on the air port 14. Next, insert the outlet 12 into the rotary fastening assembly 3. By loosening the locking member 33 beforehand, it is convenient for the end of the tube body 1 located at the outlet 12 to be inserted into the cavity of the connecting sleeve along the buckle 32. After insertion, tighten the locking member 33 to secure the tube. The component 32 is securely fastened to the tube body 1 to prevent the tube body 1 from slipping off; at the same time, the connection port 21 of the urine collection bag 2 is inserted into the other end of the connecting sleeve to connect it to the liquid level float switch 4, and the connection port 21 of the urine collection bag 2 is locked under the action of the anti-detachment hook 3121 to quickly complete the docking with the tube body 1; finally, the flushing fluid is poured into the bladder along the water inlet 15, so that the urine and flushing fluid are discharged along the tube body 1 and collected into the urine collection bag 2; when the urine collection bag 2 is full of urine, the liquid level float switch 4 automatically shuts off the delivery of the tube body 1 to prevent urine backflow, and at the same time, by loosening the locking component 33, the tube body 1 can be pulled out to quickly complete the replacement of the urine collection bag 2.
[0047] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.
Claims
1. A non-dislodgeable urinary catheter, comprising a tube body and a urine collection bag connected to the end of the tube body, characterized in that, A rotary fastening assembly is movably connected between the tube and the urine collection bag, with one end of the tube and one end of the urine collection bag respectively inserted into the rotary fastening assembly. The rotary fastening assembly includes a connecting sleeve, a snap fastener, and a locking component. The connecting sleeve has a hollow cavity structure, and a level float switch for detecting the liquid level in the urine collection bag is installed in the cavity of the connecting sleeve. The level float switch is connected to the connection port of the urine collection bag. The snap fastener is detachably connected to the cavity of the connecting sleeve near the tube end, and multiple locking blocks are circumferentially distributed on the inner wall of the snap fastener. The locking component has an internal thread on its inner side wall and is threaded to the outer side of the connecting sleeve. By rotating the locking component, the snap fastener can be locked or released from the tube to reinforce the connection between the tube and the urine collection bag.
2. The anti-dislodgement catheter according to claim 1, characterized in that, The connecting sleeve includes a first connecting section connected to the tube body, a second connecting section connected to the urine collection bag, and a transition section located between the first connecting section and the second connecting section. The outer side of the first connecting section is threaded to a locking member by an external thread. Multiple anti-detachment hooks are evenly arranged on the inner sidewall of the second connecting section. The anti-detachment hooks are integrally formed with the connecting sleeve, and the anti-detachment hooks are arranged away from the opening direction of the connecting sleeve. An annular protrusion is provided on the transition section, and an annular groove is recessed downward between the annular protrusion and the first and second connecting sections.
3. The anti-dislodgement catheter according to claim 1, characterized in that, A sealing ring is also provided in the cavity of the connecting sleeve on one side of the fastener, and the sealing ring abuts against the end of the tube body that connects to the connecting sleeve.
4. The anti-dislodgement catheter according to claim 1, characterized in that, The fastener has multiple slots around its circumference, which divide it into multiple independent sheet structures. An anti-detachment block protrudes outward from one end of the fastener.
5. The anti-dislodgement catheter according to claim 1, characterized in that, The tube is a hollow cylindrical structure, with a urinary catheter hole at one end and a liquid outlet at the other end. The urinary catheter hole is located on the side wall of the tube and is connected to the tube. The liquid outlet is connected to the urine collection bag.
6. The anti-dislodgement catheter according to claim 5, characterized in that, The tube body has an injection hole on the other side of the catheter hole, and a thin-walled air bladder is provided on the outer circumference of the tube body near the injection hole. When not inflated, the thin-walled air bladder is close to the inner wall of the tube body, and expands in a ring shape when inflated.
7. The anti-dislodgement catheter according to claim 6, characterized in that, An air inlet for injecting air into the thin-walled airbag is provided on one side of the liquid outlet. The air inlet is connected to the thin-walled airbag, and an air blowing channel is connected between the air inlet and the thin-walled airbag.
8. The anti-dislodgement catheter according to claim 7, characterized in that, A water inlet for rinsing the bladder is provided on the other side of the liquid outlet. The water inlet and the air inlet are symmetrically arranged, and an infusion pipe is connected between the water inlet and the liquid inlet.
9. The anti-dislodgement catheter according to claim 7, characterized in that, An injection valve is sealed on the injection port, and one end of the injection valve is connected to the injection port by a pull ring.