Drainage device with drainage bag convenient to replace
By designing limiting and cooperating components, the problem of cumbersome replacement of drainage bags in traditional drainage devices has been solved, achieving stability and hygiene in the drainage process and improving replacement efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- AFFILIATED HOSPITAL OF GUILIN MEDICAL UNIV
- Filing Date
- 2025-01-03
- Publication Date
- 2026-05-12
AI Technical Summary
Traditional drainage devices are cumbersome to operate when changing drainage bags, and can easily cause the drainage tube to shift or loosen, affecting the drainage effect and increasing the risk of infection.
A drainage device including a limiting component and a mating component was designed. The limiting component limits the output tube, and the mating component enables quick engagement and closure, ensuring the stability and hygiene of the drainage process.
It improves the efficiency of drainage bag replacement, ensures the stability and hygiene of the drainage process, reduces the risk of parts loosening or falling off, and enhances the efficiency and safety of medical work.
Smart Images

Figure CN224220482U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical equipment technology, and in particular to a drainage device that facilitates the replacement of drainage bags. Background Technology
[0002] With the development of medical technology, especially in the postoperative care and nursing of patients with chronic diseases, postoperative drainage devices are widely used to remove fluid or pus from body cavities, helping to promote healing and prevent infection. Traditional drainage devices typically consist of a fixed drainage tube and a drainage bag. However, in practical applications, problems exist such as inconvenient replacement of the drainage bag, unstable drainage process, and easy displacement of the drainage tube. In particular, when replacing the drainage bag, the disassembly of traditional devices is complex and difficult to operate, often requiring a lot of time and effort, and is prone to loosening or detachment of the drainage tube and guide tube, thereby affecting the drainage effect and even increasing the risk of infection.
[0003] In the prior art, Chinese patent document CN221556995U, "A Pelvic Drainage Device for Laparoscopic Surgery with Convenient Replacement of Drainage Bags", proposes to fix and replace the drainage tube by means of threaded sleeves and threaded connectors. However, in practical applications, the threaded connection fixing method is often cumbersome and takes a long time to operate, which is not conducive to the development of medical work. Utility Model Content
[0004] In view of this, the purpose of this utility model is to propose a drainage device that facilitates the replacement of drainage bags, so as to solve the problem of the cumbersome process of replacing drainage bags by disassembling them by threads in the prior art.
[0005] To achieve the above objectives, this utility model provides a drainage device for convenient replacement of drainage bags, comprising a drainage bag body, a guide tube, an output tube, a limiting component, and a matching component. The guide tube is fixedly connected to one side of the drainage bag body, and the output tube is disposed on a side independent of the guide tube and away from the drainage bag body.
[0006] A limiting component is disposed on the side of the guide tube away from the body of the drainage bag to limit the output tube, thereby ensuring that the drainage function can be realized while ensuring the stability of the drainage process.
[0007] The supporting components are located inside the output tube and are used in conjunction with the limiting components to ensure that the drainage device can be conveniently and quickly limited and perform drainage operations.
[0008] Preferably, the limiting component includes a housing, inside which two guide blocks are disposed. A connecting rod is fixedly installed on one side of each guide block, and a first spring is sleeved on the outer side of the connecting rod. A limiting button is fixedly connected to the side of the connecting rod away from the guide blocks, passing through the outer wall of the housing. A receiving groove is formed inside the housing on one side of the guide blocks, the size of which is larger than the size of the guide blocks. A guide groove is formed inside the housing on the side of the receiving groove away from the guide blocks, the guide groove passing through the housing. The size of the limiting button is larger than the size of the guide groove.
[0009] Preferably, the mating assembly includes an upper platform, a fixing rod fixedly mounted on one side of the upper platform, a lower platform sleeved on the side of the fixing rod away from the upper platform, a limiting block fixedly connected to one side of the fixing rod, the limiting block being fixed to the inner wall of the output tube, a limiting ring fixedly connected to the side of the limiting block away from the fixing rod, a second spring fixedly connected to the side of the limiting block near the limiting ring, a baffle fixedly connected to the other end of the second spring, the baffle contacting the limiting ring, the second spring being fixed to the inner wall of the output tube, and the outer diameter of the second spring being the same as the diameter of the limiting ring.
[0010] Preferably, the outer shell has a central opening with the same diameter as the guide tube. An annular protrusion is fixedly connected to one side of the outer shell. Two trigger blocks are fixedly connected to the side of the outer shell away from the guide tube. The trigger blocks are used in conjunction with the baffle.
[0011] Preferably, the guide block is a trapezoidal part with a slope at a position close to each other.
[0012] Preferably, the upper platform and the lower platform are frustum-shaped parts, and the wider side of each part faces the other.
[0013] Preferably, the guide block, the fixing rod, the limiting block, the upper platform, and the lower platform all have a hollowed-out design in the middle.
[0014] Preferably, the output tube is a flexible tube, and the diameter of the output tube is the same as the diameter of the outer shell.
[0015] The beneficial effects of this utility model are:
[0016] 1. This drainage device, which facilitates the replacement of drainage bags, achieves quick locking and limiting effects through the coordinated use of limiting components and cooperating components, thereby improving the efficiency of drainage bag replacement, making operation more convenient and faster, and increasing work efficiency.
[0017] 2. This drainage device, which facilitates the replacement of drainage bags, uses a trigger block and a baffle to work together to ensure that the device engages properly during use, creating an internal passage. When the drainage bag is removed, the output tube is automatically sealed, ensuring the hygiene of medical procedures and enhancing the practical value of the device. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0020] Figure 2 This is a schematic cross-sectional view of part of the structure of this utility model;
[0021] Figure 3 This is a schematic cross-sectional view of part of the structure of this utility model;
[0022] Figure 4 This is a schematic diagram showing some structural details of this utility model.
[0023] The diagram is marked as follows:
[0024] 1. Drainage bag body; 2. Guide tube; 3. Outer shell; 4. Annular protrusion; 5. Limit button; 6. Output tube; 7. Upper platform; 8. Connecting rod; 9. First spring; 10. Guide block; 11. Fixing rod; 12. Lower platform; 13. Limit block; 14. Second spring; 15. Limit ring; 16. Baffle; 17. Trigger block. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.
[0026] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0027] like Figures 1 to 4 As shown, a drainage device for easy replacement of drainage bags includes a drainage bag body 1, a guide tube 2, an output tube 6, a limiting component, and a matching component. The guide tube 2 is fixedly connected to one side of the drainage bag body 1, and the output tube 6 is located on a side independent of the guide tube 2 and away from the drainage bag body 1. The output tube 6 is a flexible tube, and the diameter of the output tube 6 is the same as the diameter of the outer shell 3. The guide block 10, the fixing rod 11, the limiting block 13, the upper platform 7, and the lower platform 12 all have a hollow design in the middle. The hollow design of multiple parts allows the liquid to flow more smoothly inside the device, improving the practicality of the device.
[0028] Furthermore, such as Figure 2As shown, a limiting component is located on the guide tube 2 on the side away from the drainage bag body 1, used to limit the output tube 6, thereby ensuring the drainage function can be realized and the drainage process is stable. It includes a housing 3, inside which are two guide blocks 10. A connecting rod 8 is fixedly installed on one side of each guide block 10, and a first spring 9 is sleeved on the outside of the connecting rod 8. A limiting button 5 is fixedly connected to the side of the connecting rod 8 away from the guide blocks 10, penetrating the outer wall of the housing 3. A receiving groove is formed inside the housing 3 on one side of the guide blocks 10, the size of which is larger than the size of the guide blocks 10. A guide groove is provided on the side of the receiving groove away from the guide block 10. The guide groove passes through the outer shell 3. The size of the limiting button 5 is larger than the size of the guide groove. The outer shell 3 has a central opening design. The diameter of the opening is the same as the diameter of the guide tube 2. An annular protrusion 4 is fixedly connected to the outside of one side of the outer shell 3. Two trigger blocks 17 are fixedly connected to the side of the outer shell 3 away from the guide tube 2. The trigger blocks 17 are used in conjunction with the baffle 16. The guide block 10 is a trapezoidal part with a slope at a position close to each other. The guide block 10 cooperates with the internal structure of the outer shell 3 through the connecting rod 8 and the first spring 9, so as to effectively limit the output tube 6. This ensures that the drainage tube is not easily displaced during use, maintaining the stability of the drainage. The design of multiple grooves ensures that the guide block 10 has a limited range of movement within the housing 3, thus preventing jamming or displacement during use and improving the stability of the drainage function. The size of the limit button 5 is larger than the size of the guide groove, ensuring that the limit button 5 will not fall out of the guide groove. This design effectively avoids the loss of control of components in the drainage device and reduces the safety risks caused by loosening or falling off of components. The housing 3 is equipped with two trigger blocks 17, and the trigger blocks 17 work in conjunction with the baffle 16. This design can trigger the drainage of liquid while the limit function is being implemented. The housing 3 adopts a design with a central opening. Furthermore, the diameter of the opening is consistent with the diameter of the guide tube 2, which makes it easy to insert the guide tube 2 during installation while ensuring sealing and stability. This design facilitates quick installation and disassembly. At the same time, the annular protrusion 4 can limit and seal the output tube 6. The guide block 10 adopts a trapezoidal structure with close proximity and slope. This design can more accurately guide the movement of the output tube 6, avoid deviation from the predetermined path, and increase the fitting accuracy between components in actual use, ensuring the accuracy of the drainage tube during long-term use. The first spring 9 sleeved on the outside of the connecting rod 8 plays an elastic limiting role and can automatically adjust its position according to the changes in the drainage tube, enhancing the adaptability of the design.
[0029] Furthermore, such as Figure 3 as well as Figure 4As shown, the supporting components are located inside the output pipe 6 and are used in conjunction with the limiting components to ensure that the drainage device can be conveniently and quickly limited and perform drainage operations. The components include an upper platform 7, with a fixing rod 11 fixedly installed on one side. A lower platform 12 is fitted onto the side of the fixing rod 11 away from the upper platform 7. The upper platform 7 and the lower platform 12 are frustum-shaped parts, with their wider sides facing each other. A limiting block 13 is fixedly connected to one side of the fixing rod 11. The limiting block 13 is connected to the output pipe... The inner wall of the output tube 6 is fixed. The limiting block 13 is fixedly connected to the limiting ring 15 on the side away from the fixed rod 11. The limiting block 13 is fixedly connected to the second spring 14 on the side close to the limiting ring 15. The other end of the second spring 14 is fixedly connected to the baffle 16. The baffle 16 is in contact with the limiting ring 15. The second spring 14 is fixed to the inner wall of the output tube 6. The outer diameter of the second spring 14 is the same as the diameter of the limiting ring 15. The limiting block 13 is fixed to the inner wall of the output tube 6. The limiting block 13 and the limiting ring 15 are tightly fitted together. This design ensures the accurate positioning of the limiting ring 15 during the drainage process, effectively preventing unnecessary displacement of the output tube 6 during use. The upper platform 7 and the lower platform 12 are frustum-shaped and connected by a fixing rod 11. This frustum structure helps to maintain the stability of the components and can be used with the guide block 10 to limit and release the position. The baffle 16 and the limiting block 13 are connected by a second spring 14, which can ensure that no liquid overflows before the drainage bag is inserted, thereby ensuring a hygienic environment.
[0030] Workflow:
[0031] When using the device, insert the output pipe 6 into the outer casing 3 and forcefully push it through the annular protrusion 4. At this time, the two guide blocks 10 are displaced to the sides under the pressure of the upper platform 7. When the top of the guide block 10 passes the bottom of the upper platform 7, the first spring 9 pushes the guide block 10 back to its original position, limiting the upper platform 7. At this point, the guide pipe 2 and the output pipe 6 are tightly joined, and the trigger block 17 abuts against the baffle 16, forcing the baffle 16 away from the limiting ring 15, thus creating an overflow channel for the output pipe 6, completing the drainage process. When further... When replacing the drainage bag, hold one end of the guide tube 2 and push it into the output tube 6. At this time, the two guide blocks 10 pass through the side of the lower platform 12 and move to the bottom of the lower platform 12, locking and limiting the bottom of the lower platform 12. Then, pull the guide tube 2 outwards from the output tube 6. The guide blocks 10 will drive the lower platform 12 to move outwards until it is away from the widest position of the upper platform 7. At this time, the limit is released, and the trigger block 17 also disengages from the baffle 16, so that the inside of the output tube 6 is resealed. The guide tube 2 is also removed from the inside of the output tube 6 for drainage bag replacement.
[0032] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.
[0033] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A drainage device that facilitates the replacement of drainage bags, characterized in that, include: The drainage bag body (1), guide tube (2), output tube (6), limiting component, and mating component are provided. The guide tube (2) is fixedly connected to one side of the drainage bag body (1), and the output tube (6) is located on a side independent of the guide tube (2) and away from the drainage bag body (1). A limiting component is provided on the side of the guide tube (2) away from the body of the drainage bag (1) to limit the output tube (6), thereby ensuring that the drainage function can be realized and the drainage process is stable. The supporting components are located inside the output tube (6) and are used in conjunction with the limiting components to ensure that the drainage device can be conveniently and quickly limited and perform drainage operations.
2. The drainage device for convenient replacement of drainage bags according to claim 1, characterized in that, The limiting component includes a housing (3), inside which are provided two guide blocks (10). A connecting rod (8) is fixedly installed on one side of the guide block (10), and a first spring (9) is sleeved on the outside of the connecting rod (8). A limiting button (5) is fixedly connected to the side of the connecting rod (8) away from the guide block (10) through the outer wall of the housing (3). A receiving groove is provided inside the housing (3) on one side of the guide block (10), and the size of the receiving groove is larger than the size of the guide block (10). A guide groove is provided inside the housing (3) on the side of the receiving groove away from the guide block (10), and the guide groove penetrates the housing (3). The size of the limiting button (5) is larger than the size of the guide groove.
3. The drainage device for convenient replacement of drainage bags according to claim 2, characterized in that, The fitting assembly includes an upper platform (7), a fixing rod (11) is fixedly installed on one side of the upper platform (7), a lower platform (12) is sleeved on the side of the fixing rod (11) away from the upper platform (7), a limiting block (13) is fixedly connected to one side of the fixing rod (11), the limiting block (13) is fixed to the inner wall of the output pipe (6), a limiting ring (15) is fixedly connected to the side of the limiting block (13) away from the fixing rod (11), a second spring (14) is fixedly connected to the side of the limiting block (13) close to the limiting ring (15), a baffle (16) is fixedly connected to the other end of the second spring (14), the baffle (16) is in contact with the limiting ring (15), the second spring (14) is fixed to the inner wall of the output pipe (6), and the outer diameter of the second spring (14) is the same as the diameter of the limiting ring (15).
4. A drainage device for convenient replacement of drainage bags according to claim 3, characterized in that, The outer shell (3) has a central opening, and the diameter of the opening is the same as that of the guide tube (2). A ring-shaped protrusion (4) is fixedly connected to one side of the outer shell (3). Two trigger blocks (17) are fixedly connected to the side of the outer shell (3) away from the guide tube (2). The trigger blocks (17) are used in conjunction with the baffle (16).
5. A drainage device for convenient replacement of drainage bags according to claim 2, characterized in that, The guide block (10) is a trapezoidal part with a slope at a position close to each other.
6. A drainage device for convenient replacement of drainage bags according to claim 3, characterized in that, The upper platform (7) and the lower platform (12) are frustum-shaped parts, and the two are arranged facing each other with their wider sides facing each other.
7. A drainage device for convenient replacement of drainage bags according to claim 3, characterized in that, The guide block (10), the fixing rod (11), the limiting block (13), the upper platform (7), and the lower platform (12) are all designed with a hollowed-out center.
8. A drainage device for convenient replacement of drainage bags according to claim 3, characterized in that, The output tube (6) is a flexible tube, and the diameter of the output tube (6) is the same as the diameter of the outer shell (3).