Novel flushable urinary catheter
By incorporating a flow-regulating structure with a baffle plate and a ball bearing on the urinary catheter, the problems of bladder damage and flow rate control during bladder irrigation are solved, preventing bladder overfilling and catheter damage, thus improving the user experience and irrigation effect.
Patent Information
- Application Number
- CN202423002540.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-06
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2034-12-06
AI Technical Summary
Existing urinary catheters are prone to causing bladder damage during bladder irrigation, have difficulty controlling the flow rate, and lack the function of preventing catheter damage, affecting the user experience and effectiveness.
A novel flushable urinary catheter was designed. By setting a catheter port, a fixing frame, a limiting ring, a telescopic rod, a flow baffle, and a needleless connector on the surface of the catheter, the flow rate is regulated by the pressure inside the bladder, and the opening of the through hole is adjusted by rotating a ball. Combined with a balloon fixation and sealing structure, it prevents the bladder from overfilling and the catheter from being damaged.
It prevents bladder damage, stabilizes and controls the flow rate, improves the user experience and flushing effect, avoids catheter damage and extravasation, and enhances the stability and sealing of the catheter.
Smart Images

Figure CN223817948U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of urinary catheters, and in particular to a novel flushable urinary catheter. Background Technology
[0002] A search of Chinese patents revealed publication number CN209529882U, which discloses a bladder irrigation catheter. The catheter includes a main body, an inner sheath, a balloon interface, a balloon, a bladder irrigation connector, and a syringe connector. The utility model features a movable inner sheath inside the catheter, allowing for direct bladder irrigation. It enables quick and effective bladder irrigation for patients with blood clots obstructing their bladder. This utility model is highly practical and can be used in clinical practice for bladder irrigation and drainage in hospitals.
[0003] Existing urinary catheters lack the function of preventing bladder injury. When performing bladder irrigation and intravesical chemotherapy, the needle is typically used for puncture, which easily damages the catheter, requiring reinsertion and increasing patient discomfort – a very inconvenient process. Furthermore, if family members fail to open the valve promptly during bladder irrigation, overfilling of the bladder can cause injury, further increasing patient suffering. These catheters are inconvenient to use and cannot regulate flow rate. Generally, bladder irrigation and intravesical chemotherapy are administered using syringes, which are difficult to control in terms of injection speed. Injections that are too fast cause discomfort and pain, while injections that are too slow affect the efficiency of irrigation or injection, compromising effectiveness and reducing practicality. To address these problems, we propose a novel flushable urinary catheter. Utility Model Content
[0004] The purpose of this invention is to provide a novel flushable urinary catheter, which has the advantages of preventing bladder damage and regulating flow rate.
[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a novel flushable urinary catheter, comprising a urinary catheter, wherein a urinary catheter hole is provided on the surface of the urinary catheter, a fixing frame and a limiting ring are fixedly sleeved on the inner wall of the surface of the urinary catheter, a fixing rod is bolted to the top of the fixing frame, a telescopic rod is slidably sleeved on the inner wall of the fixing rod, a spring is provided between the inner wall of the telescopic rod and the fixing rod, a flow-blocking plate is bolted to the top of the telescopic rod and the flow-blocking plate is located at the bottom of the limiting ring, a connecting pipe is connected to the surface of the urinary catheter, a control valve is connected to the surface of the connecting pipe, a flushing pipe is connected to the surface of the urinary catheter, a needleless connector is provided at the other end of the flushing pipe, and a fixing mechanism is provided on the surface of the urinary catheter.
[0006] By adopting the above technical solution, when the pressure inside the bladder exceeds the elastic force of the spring, the baffle plate will disengage from the limiting ring, opening the urinary catheter and draining the fluid from the bladder. This can prevent bladder damage and avoid bladder overfilling. By setting a needleless connector, repeated punctures can be avoided to prevent damage to the urinary catheter, prevent extravasation, and prevent needle breakage.
[0007] The present invention is further configured such that: the other end of the flushing tube is connected to a fixing block, and the fixing block is connected to one end of the needleless connector; a ball is rotatably sleeved on the inner wall of the fixing block; a through hole is opened on the surface of the ball; a rotating shaft is bolted to the surface of the ball, and the rotating shaft is rotatably sleeved on the inner wall of the fixing block.
[0008] By adopting the above technical solution, the rotating head drives the rotating shaft to rotate the ball, which in turn drives the through hole to rotate. The rotation of the through hole changes the opening of the through hole, thereby achieving the purpose of regulating the flow rate, ensuring the stability of the injection flow rate, improving the user experience, and ensuring the rinsing effect.
[0009] The present invention is further configured such that: the fixing mechanism includes an airway, the airway is opened on the inner wall of the urinary catheter, one end of the airway is connected to an inflation tube, the other end of the inflation tube is connected to a quick connector, the other end of the airway is connected to an airbag, and the airbag is fixedly sleeved on the surface of the urinary catheter.
[0010] By adopting the above technical solution, a fixing mechanism is set up to fix the urinary catheter, preventing it from slipping out of the bladder and improving stability.
[0011] The present invention is further configured such that a urine bag connector is connected to the bottom of the urine tube.
[0012] By adopting the above technical solution, a urine bag connector is provided to facilitate connection with the urine bag.
[0013] The present invention is further configured such that a fixing nut is threaded onto the surface of the rotating shaft.
[0014] By adopting the above technical solution, the rotating shaft is fixed by setting a fixing nut, thereby fixing the rolling ball and preventing the rolling ball from rotating during use, thus improving stability.
[0015] The present invention is further configured such that one end of the rotating shaft rotates a rotating head.
[0016] By adopting the above technical solution, a rotating head is provided to facilitate the rotation of the shaft.
[0017] The present invention is further configured such that a switch valve is connected to the surface of the inflation tube.
[0018] By adopting the above technical solution and setting a switch valve, it is easy to maintain the air pressure of the airbag and deflate it.
[0019] The present invention is further configured such that: the inner wall of the fixing block and the surface of the flow-blocking plate are both embedded with sealing gaskets.
[0020] By adopting the above technical solution, a sealing gasket is set to prevent leakage and improve the sealing performance.
[0021] In summary, this utility model has the following beneficial effects:
[0022] 1. This utility model achieves the purpose of preventing bladder damage by opening the urinary catheter and draining the liquid from the bladder when the pressure inside the bladder exceeds the elastic force of the spring, causing the baffle plate to disengage from the limiting ring. It avoids bladder damage caused by overfilling of the bladder. By setting a needleless connector, it avoids damage to the urinary catheter caused by repeated punctures, prevents extravasation, and avoids needle breakage.
[0023] 2. This utility model achieves the purpose of regulating the flow rate by rotating the rotating head to drive the rotating shaft to rotate the ball, which in turn drives the through hole to rotate, thereby changing the opening of the through hole. This ensures the stability of the injection flow rate, improves the user experience, and guarantees the rinsing effect. Attached Figure Description
[0024] Figure 1 This is a three-dimensional structural view of the present invention;
[0025] Figure 2 This is a cross-sectional view of the structure of this utility model;
[0026] Figure 3 This is a utility model Figure 2 Enlarged view of the structure at point A in the middle;
[0027] Figure 4 This is a utility model Figure 2 Enlarged view of the structure at point B in the middle.
[0028] Reference numerals: 1. Urinary catheter; 2. Urinary catheter port; 3. Fixing frame; 4. Limiting ring; 5. Fixing rod; 6. Telescopic rod; 7. Spring; 8. Baffle plate; 9. Flushing tube; 10. Needleless connector; 11. Fixing mechanism; 12. Fixing block; 13. Ball bearing; 14. Through hole; 15. Rotating shaft; 16. Airway; 17. Inflation tube; 18. Quick connector; 19. Airbag; 20. Urinary bag connector; 21. Fixing nut; 22. Rotating head; 23. Switch valve; 24. Sealing gasket; 25. Connecting tube; 26. Control valve. Detailed Implementation
[0029] The present invention will be further described in detail below with reference to the accompanying drawings.
[0030] Example 1:
[0031] refer to Figure 1 , Figure 2 and Figure 3 A novel flushable urinary catheter includes a urinary catheter 1 with a catheter hole 2 on its surface. A fixing frame 3 and a limiting ring 4 are fixedly sleeved on the inner wall of the urinary catheter 1. A fixing rod 5 is bolted to the top of the fixing frame 3. A telescopic rod 6 is slidably sleeved on the inner wall of the fixing rod 5. A spring 7 is provided between the telescopic rod 6 and the inner wall of the fixing rod 5. A flow-blocking plate 8 is bolted to the top of the telescopic rod 6 and is located at the bottom of the limiting ring 4. A connecting pipe 25 is connected to the surface of the urinary catheter 1, and a control valve 2 is connected to the surface of the connecting pipe 25. 6. The surface of the urinary catheter 1 is connected to the flushing tube 9, and the other end of the flushing tube 9 is provided with a needleless connector 10. The surface of the urinary catheter 1 is provided with a fixing mechanism 11. When the pressure inside the bladder is greater than the elastic force of the spring 7, the flow-blocking plate 8 will disengage from the limiting ring 4, opening the urinary catheter 1 and draining the liquid from the bladder. This can prevent bladder damage and avoid bladder damage caused by overfilling of the bladder. By setting the needleless connector 10, repeated punctures are avoided to prevent damage to the urinary catheter 1, prevent extravasation, and prevent needle breakage.
[0032] refer to Figure 2 The fixing mechanism 11 includes an airway 16, which is located on the inner wall of the urinary catheter 1. One end of the airway 16 is connected to an inflation tube 17, and the other end of the inflation tube 17 is connected to a quick connector 18. The other end of the airway 16 is connected to an airbag 19, and the airbag 19 is fixedly sleeved to the surface of the urinary catheter 1. By setting the fixing mechanism 11, the urinary catheter 1 is fixed to prevent it from slipping out of the bladder and improves stability.
[0033] refer to Figure 1 and Figure 2 The bottom of the urinary catheter 1 is connected to a urine bag connector 20, which facilitates connection with the urine bag.
[0034] refer to Figure 1 and Figure 2 The surface of the inflation tube 17 is connected to a switch valve 23. By setting the switch valve 23, it is easy to maintain the air pressure of the airbag 19 and deflate it.
[0035] Example 2:
[0036] refer to Figure 1 , Figure 2 and Figure 4The other end of the flushing tube 9 is connected to a fixing block 12, and the fixing block 12 is connected to one end of the needleless connector 10. A ball 13 is rotatably sleeved on the inner wall of the fixing block 12. A through hole 14 is opened on the surface of the ball 13. A rotating shaft 15 is bolted to the surface of the ball 13, and the rotating shaft 15 is rotatably sleeved on the inner wall of the fixing block 12. By rotating the rotating head 22, the rotating shaft 15 drives the ball 13 to rotate. The rotation of the ball 13 drives the through hole 14 to rotate. The rotation of the through hole 14 changes the opening of the through hole 14, which can achieve the purpose of adjusting the flow rate, ensuring the stability of the injection flow rate, improving the user experience, and ensuring the flushing effect.
[0037] refer to Figure 1 and Figure 4 The rotating shaft 15 is threaded with a fixing nut 21. By setting the fixing nut 21, the rotating shaft 15 is fixed, thereby fixing the ball 13 and preventing the ball 13 from rotating during use, thus improving stability.
[0038] refer to Figure 1 and Figure 4 One end of the rotating shaft 15 rotates the rotating head 22. By setting the rotating head 22, it is easy to rotate the rotating shaft 15.
[0039] refer to Figure 3 and Figure 4 Both the inner wall of the fixing block 12 and the surface of the flow baffle 8 are embedded with sealing gaskets 24. By setting the sealing gaskets 24, leakage is prevented and the sealing performance is improved.
[0040] Brief description of usage: When flushing the bladder, close the control valve 26. If the pressure inside the bladder is greater than the elastic force of the spring 7, the flow barrier 8 will disengage from the limiting ring 4, opening the catheter 1 and draining the liquid from the bladder, thus preventing bladder damage. During normal catheterization, open the control valve 26 and drain the urine normally. By setting the needleless connector 10, repeated punctures are avoided, preventing damage to the catheter 1, extravasation, and needle breakage. Rotating the rotating head 22 causes the rotating shaft 15 to drive the ball 13 to rotate. The rotation of the ball 13 drives the through hole 14 to rotate, and the rotation of the through hole 14 changes the opening of the through hole 14, thus regulating the flow rate.
[0041] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.
Claims
1. A novel flushable urinary catheter, comprising a urinary catheter (1), characterized in that, The surface of the urinary catheter (1) is provided with a catheter hole (2). A fixing frame (3) and a limiting ring (4) are fixedly sleeved on the inner wall of the surface of the urinary catheter (1). A fixing rod (5) is bolted to the top of the fixing frame (3). A telescopic rod (6) is slidably sleeved on the inner wall of the fixing rod (5). A spring (7) is provided between the telescopic rod (6) and the inner wall of the fixing rod (5). A flow baffle (8) is bolted to the top of the telescopic rod (6), and the flow baffle (8) is located at the bottom of the limiting ring (4). A connecting pipe (25) is connected to the surface of the urinary catheter (1). A control valve (26) is connected to the surface of the connecting pipe (25). A flushing pipe (9) is connected to the surface of the urinary catheter (1). A needleless connector (10) is provided at the other end of the flushing pipe (9). A fixing mechanism (11) is provided on the surface of the urinary catheter (1).
2. The novel flushable urinary catheter according to claim 1, characterized in that, The other end of the flushing tube (9) is connected to a fixing block (12), and the fixing block (12) is connected to one end of the needleless connector (10). A ball (13) is rotatably sleeved on the inner wall of the fixing block (12). A through hole (14) is opened on the surface of the ball (13). A rotating shaft (15) is bolted to the surface of the ball (13), and the rotating shaft (15) is rotatably sleeved on the inner wall of the fixing block (12).
3. The novel flushable urinary catheter according to claim 1, characterized in that, The fixing mechanism (11) includes an airway (16), which is opened on the inner wall of the urinary catheter (1). One end of the airway (16) is connected to an inflation tube (17), and the other end of the inflation tube (17) is connected to a quick connector (18). The other end of the airway (16) is connected to an airbag (19), and the airbag (19) is fixedly sleeved to the surface of the urinary catheter (1).
4. The novel flushable urinary catheter according to claim 1, characterized in that, The bottom of the urinary catheter (1) is connected to a urine bag connector (20).
5. A novel flushable urinary catheter according to claim 2, characterized in that, The rotating shaft (15) is threaded with a fixing nut (21).
6. A novel flushable urinary catheter according to claim 2, characterized in that, One end of the rotating shaft (15) rotates the rotating head (22).
7. A novel flushable urinary catheter according to claim 3, characterized in that, The surface of the inflation tube (17) is connected to a switch valve (23).
8. A novel flushable urinary catheter according to claim 2, characterized in that, The inner wall of the fixing block (12) and the surface of the flow deflector (8) are both embedded with sealing gaskets (24).
Citation Information
Patent Citations
Urethral catheter for bladder irrigation
CN209529882U