Connecting structure
By designing a rotating rod and a sealed piston column in the connection structure, the problem of catheter blockage was solved, achieving efficient unblocking and backflow prevention, simplifying the treatment process, and reducing resource waste.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2026-03-20
AI Technical Summary
Existing urinary catheters are prone to forming blood clots and causing blockages when blood is mixed in the patient's urine. Traditional treatment methods are cumbersome and wasteful of resources.
A connection structure was designed, including a main connecting pipe, a catheter, a rotating rod, a sealing piston cavity, and an anti-backflow mechanism. By rotating the handle, the rotating rod and the sealing piston column are moved, and pressure is used to clear blockages and prevent urine backflow.
It effectively clears urinary catheter blockages, reduces resource waste, simplifies the treatment process, and ensures smooth urine delivery.
Smart Images

Figure CN224008868U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, specifically a connection structure. Background Technology
[0002] Urology is a branch of medicine that specializes in the study of the male and female urinary and reproductive systems. It is a subspecialty derived from surgery. For both men and women, the urinary tract and reproductive tract are closely related, and diseases of the two often affect each other. The organs covered by urology include the kidneys, ureters, bladder, and urethra. When urology patients are unable to get out of bed due to surgery or other reasons, a catheter is needed to transport the patient's urine.
[0003] However, some patients, due to the severity of their condition or shortly after surgery, may experience blood in their urine. Blood can easily form clots, which can block the urinary catheter. In most cases, if the catheter becomes completely blocked, the only solution is to cut off the end of the catheter connected to the urine collection bag, use other means to remove the blockage, and then reconnect a new urine collection bag. This method is not only troublesome but also wastes medical resources such as urine collection bags. Utility Model Content
[0004] The purpose of this invention is to provide a connection structure to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a connection structure, including a main connecting pipe, a connecting branch pipe connected to the top of the main connecting pipe, a second catheter connected to the top of the branch pipe, a first catheter connected to one end of the main connecting pipe, a sealing piston cavity inside the main connecting pipe, a first sealing piston column slidably connected to the inner side of the sealing piston cavity, a rotating rod fixedly connected to the inner side of the first sealing piston column, a rotating handle fixedly connected to one end of the rotating rod outside the main connecting pipe, a first cylindrical cavity fixedly connected to the inner side of the main connecting pipe, a second sealing piston column fixedly connected to one end of the rotating rod inside the main connecting pipe, and an anti-backflow mechanism inside the main connecting pipe.
[0006] Preferably, the anti-backflow mechanism includes a second cylindrical cavity, which is fixedly connected to the main connecting pipe. A first fixing plate is fixedly connected to the inner side of the main connecting pipe and to one side of the second cylindrical cavity. A spring is fixedly connected to one side of the first fixing plate. A second fixing plate is fixedly connected to one end of the spring. A blocking sphere is fixedly connected to one side of the second fixing plate and to the inner side of the second cylindrical cavity.
[0007] Preferably, a fixed ring is rotatably connected to the outside of the rotating rod and inside the connecting main pipe, a fixed rod is fixedly connected to the inside of the connecting main pipe, a sealing arc plate is slidably connected to the outside of the fixed rod, and the fixed ring is fixedly connected to the sealing arc plate.
[0008] Preferably, the rotating rod is threaded and is threaded to the main pipe.
[0009] Preferably, the diameter of the second sealing piston cylinder is the same as the diameter of the cavity hole of the first cylindrical cavity.
[0010] Preferably, the diameter of the blocking sphere is the same as the diameter of the cavity hole in the second cylindrical cavity.
[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model, by setting up a connecting main pipe, a first catheter, a rotating rod, a rotating handle, a sealing piston inner cavity, a first sealing piston column, a first circular cylinder and a second sealing piston column, and an anti-backflow mechanism, continuously rotates the rotating handle, causing the rotating rod to rotate inside the connecting main pipe. Through the threaded connection, the second sealing piston column is driven to move inside the first circular cylinder. After the second sealing piston column enters the first circular cylinder, it continues to move inward, continuously applying pressure to the space on the other side of the first circular cylinder connecting the main pipe and inside the first catheter, forcing the blockage to flow through the first catheter and finally into the urine collection bag. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall internal structure of this utility model;
[0013] Figure 2 This utility model Figure 1 Enlarged view of point A in the middle;
[0014] Figure 3 This utility model Figure 1 Enlarged view at point B in the middle;
[0015] Figure 4 This is a schematic diagram of the three-dimensional structure of the first cylindrical cavity of this utility model.
[0016] In the diagram: 1. Connecting main pipe; 2. Connecting branch pipe; 3. Rotating handle; 4. Rotating rod; 5. First sealing piston cylinder; 6. Sealing piston inner cavity; 7. Second sealing piston cylinder; 8. First circular cavity cylinder; 9. First catheterization hose; 10. Second catheterization hose; 11. Sealing arc plate; 12. Fixing rod; 13. Fixing ring; 14. First fixing plate; 15. Spring; 16. Second fixing plate; 17. Blocking sphere; 18. Second circular cavity cylinder; 19. Anti-backflow mechanism. Detailed Implementation
[0017] 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0018] Please see Figures 1 to 4 This utility model provides a technical solution: a connection structure including a main connecting pipe 1, a connecting branch pipe 2 connected to the top of the main connecting pipe 1, a second catheter 10 connected to the top of the connecting branch pipe 2, and a first catheter 9 connected to one end of the main connecting pipe 1. The second catheter 10 connects to the connecting branch pipe 2, allowing the patient's urine to be transported into the connecting branch pipe 2. Then, the urine is transported into the main connecting pipe 1 via the connecting branch pipe 2, and finally transported into a urine collection bag via the connected first catheter 9. The main connecting pipe 1 has a sealed piston cavity 6 inside, with a first sealed piston cylinder 5 slidably connected to the inner side of the sealed piston cavity 6. A rotating rod 4 is fixedly connected to the inner side of the first sealed piston cylinder 5. A rotating handle 3 is fixedly connected to one end of the rotating rod 4, located outside the main connecting pipe 1. A first cylindrical cavity 8 is fixedly connected to the inner side of the main connecting pipe 1. One end of the rotating rod 4, located inside the main connecting pipe 1, is fixedly connected to a second sealing piston 7. The rotating rod 4 can be moved to move the second sealing piston 7 to the inside of the first cylindrical cavity 8. After the second sealing piston 7 is moved further inside the first cylindrical cavity 8, pressure is applied to the other side of the main connecting pipe 1 and the first cylindrical cavity 8. This pressure is used to clear the blockage in the main connecting pipe 1 and the first catheter 9 and squeeze it into the urine collection bag. The first sealing piston 5 and the inner cavity of the sealing piston 6 ensure that urine does not overflow at the connection between the rotating rod 4 and the connecting branch pipe 2, thus achieving a sealing effect. The main connecting pipe 1 is equipped with an anti-backflow mechanism 19. The anti-backflow mechanism 19 prevents urine in the first catheter 9 from flowing back into the main connecting pipe 1 and the connecting branch pipe 2 without affecting the delivery of urine from the main connecting pipe 1 to the first catheter 9.
[0019] Furthermore, the anti-backflow mechanism 19 includes a second cylindrical cavity 18, which is fixedly connected to the main pipe 1. A first fixing plate 14 is fixedly connected to the inner side of the main pipe 1 and to one side of the second cylindrical cavity 18. A spring 15 is fixedly connected to one side of the first fixing plate 14. A second fixing plate 16 is fixedly connected to one end of the spring 15. A blocking sphere 17 is fixedly connected to one side of the second fixing plate 16 and to the inner side of the second cylindrical cavity 18. If urine flows in from one side of the second cylindrical cavity 18... Alternatively, if pressure is applied, the blocking sphere 17 will exit the cavity of the second cylindrical cavity 18, allowing urine or pressure to reach the first catheter 9 on the other side through the cavity of the second cylindrical cavity 18. Conversely, without external force, the blocking sphere 17 will be reset by the spring 15 between the first fixing plate 14 and the second fixing plate 16 and enter the inner side of the second cylindrical cavity 18, thus preventing urine in the first catheter 9 from flowing back to the other side of the second cylindrical cavity 18 connected to the main pipe 1.
[0020] Furthermore, a fixed ring 13 is rotatably connected to the outside of the rotating rod 4 and inside the connecting main pipe 1. A fixed rod 12 is fixedly connected to the inside of the connecting main pipe 1. A sealing arc plate 11 is slidably connected to the outside of the fixed rod 12. The fixed ring 13 is fixedly connected to the sealing arc plate 11. The movement of the rotating rod 4 can drive the fixed ring 13, which in turn drives the sealing arc plate 11 to move horizontally outside the fixed rod 12. This moves the sealing arc plate 11 to the connection point between the connecting branch pipe 2 and the connecting main pipe 1, covering the connection point and preventing urine from flowing back into the connecting main pipe 1.
[0021] Furthermore, the rotating rod 4 is threaded and is threadedly connected to the main pipe 1. Through the threaded connection between the rotating rod 4 and the main pipe 1, the rotating rod 4 can be rotated to move inside the branch pipe 2.
[0022] Furthermore, the diameter of the second sealing piston 7 is the same as the diameter of the cavity hole of the first circular cylinder 8. After entering the inner cavity of the first circular cylinder 8 through the second sealing piston 7, it can completely block the inside of the first circular cylinder 8 and continuously move to give pressure to the other side of the space.
[0023] Furthermore, the diameter of the blocking sphere 17 is the same as the diameter of the cavity hole of the second cylindrical cavity 18, so that the sphere 17 can completely block the cavity after entering the inner cavity of the second cylindrical cavity 18.
[0024] When using this utility model, the second catheter 10 is first connected to the connecting branch pipe 2, and the first catheter 9 is connected to one end of the connecting main pipe 1. If blood clots and cause blockage in the first catheter 9, the rotating handle 3 at one end of the rotating rod 4 is rotated to move the rotating rod 4 inside the connecting main pipe 1 via a threaded connection. As the rotating rod 4 moves, it drives the second sealing piston 7 at one end to push into the first cylindrical cavity 8. After the second sealing piston 7 enters the first cylindrical cavity 8, it continues to move, thereby applying pressure to the connecting main pipe 1 and the other side of the first cylindrical cavity 8. This pressure clears the blockage in the first catheter 9, or slowly squeezes it into the urine collection bag. When the rotating rod 4 moves, the outer fixing ring 13 drives the sealing arc plate 11 to move, covering the connection between the connecting branch pipe 2 and the connecting main pipe 1, effectively allowing urine in the connecting main pipe 1 to re-enter the connecting branch pipe 2 and the second catheter 10.
[0025] If urine flows into the main connecting pipe 1 or the second sealing piston cylinder 7 is pushed into the first cylindrical cavity 8 to apply pressure to the inside of the main connecting pipe 1, the blocking sphere 17 will be affected by external force and withdraw from the inside of the second cylindrical cavity 18, allowing urine or pressure to be transmitted to the other side of the second cylindrical cavity 18 or the inside of the first catheter 9. Without external force, the blocking sphere 17 will be reset by the spring 15 between the first fixing plate 14 and the second fixing plate 16 and re-enter the inside of the second cylindrical cavity 18, thereby preventing urine in the first catheter 9 from flowing back into the main connecting pipe 1 and the branch connecting pipe 2.
[0026] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the 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, they should not be construed as limitations on this utility model.
[0027] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.
[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A connection structure, comprising a connecting main pipe (1), characterized in that, The top of the main connecting pipe (1) is connected to a connecting branch pipe (2), the top of the connecting branch pipe (2) is connected to a second catheter (10), one end of the main connecting pipe (1) is connected to a first catheter (9), the inside of the main connecting pipe (1) is provided with a sealing piston cavity (6), the inner side of the sealing piston cavity (6) is slidably connected to a first sealing piston column (5), the inner side of the first sealing piston column (5) is fixedly connected to a rotating rod (4), one end of the rotating rod (4) and located outside the main connecting pipe (1) is fixedly connected to a rotating handle (3), the inner side of the main connecting pipe (1) is fixedly connected to a first circular cylinder (8), one end of the rotating rod (4) and located inside the main connecting pipe (1) is fixedly connected to a second sealing piston column (7), and the inside of the main connecting pipe (1) is provided with an anti-backflow mechanism (19).
2. The connection structure according to claim 1, characterized in that: The anti-backflow mechanism (19) includes a second cylindrical cavity (18), which is fixedly connected to the main pipe (1). A first fixing plate (14) is fixedly connected to the inner side of the main pipe (1) and to one side of the second cylindrical cavity (18). A spring (15) is fixedly connected to one side of the first fixing plate (14). A second fixing plate (16) is fixedly connected to one end of the spring (15). A blocking sphere (17) is fixedly connected to one side of the second fixing plate (16) and to the inner side of the second cylindrical cavity (18).
3. The connection structure according to claim 1, characterized in that: A fixed ring (13) is rotatably connected to the outside of the rotating rod (4) and inside the connecting main pipe (1). A fixed rod (12) is fixedly connected to the inside of the connecting main pipe (1). A sealing arc plate (11) is slidably connected to the outside of the fixed rod (12). The fixed ring (13) is fixedly connected to the sealing arc plate (11).
4. The connection structure according to claim 1, characterized in that: The rotating rod (4) is threaded and is threadedly connected to the main pipe (1).
5. The connection structure according to claim 1, characterized in that: The diameter of the second sealing piston cylinder (7) is the same as the diameter of the cavity hole of the first cylindrical cylinder (8).
6. A connection structure according to claim 2, characterized in that: The diameter of the blocking sphere (17) is the same as the diameter of the cavity hole of the second cavity cylinder (18).