Drainage bag
By incorporating corrugated folds and an adjustable hanging rope structure into the drainage tube of the drainage bag, the problem caused by the fixed length of the drainage tube was solved, enabling the drainage device to adapt to and be comfortable in different body positions, thus improving patient safety and ease of use.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHONGNAN HOSPITAL OF WUHAN UNIV
- Filing Date
- 2025-04-08
- Publication Date
- 2026-05-29
AI Technical Summary
The drainage tubes of existing drainage bags have a fixed length, which makes it difficult to adapt to changes in the patient's position, leading to problems such as tube folding, traction, and displacement, affecting comfort and safety.
A corrugated folding section and an adjustable hanging rope structure are installed on the drainage pipe. The length can be adjusted by using a loop and a fixing section. A threaded connection section and a Luer cable joint are designed at the pipe end to enhance adaptability and fixation.
It enables flexible adjustment of the drainage tube length, reduces the risks of folding, pulling, and displacement, improves patient comfort and safety, and enhances the applicability of the drainage device in multiple positions and scenarios.
Smart Images
Figure CN224292287U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of medical devices, and specifically relates to a drainage bag. Background Technology
[0002] In the medical field, drainage bags are basic medical devices commonly used in postoperative patients or infection control scenarios. They are primarily used to drain accumulated fluid, gas, blood, or other secretions, preventing fluid buildup that could lead to secondary infections or complications. Drainage bags are typically connected to catheters (such as chest tubes, abdominal tubes, or urinary catheters) within the patient's body via drainage tubing, enabling closed or open drainage. To ensure unobstructed drainage, the drainage tubing is usually made of flexible medical-grade silicone or PVC, and its length is designed to accommodate different surgical procedures, drainage sites, and the convenience of clinical care. However, in practice, the structure of drainage bags and their tubing is generally quite simple, lacking flexibility and adjustability, making it difficult to meet the needs of individualized care and dynamic treatment.
[0003] Currently, most drainage bags use a fixed-length drainage tube design, which is difficult to adapt to changes in drainage path caused by frequent changes in patient position. Postoperatively, patients may need to turn over, sit up, and walk during recovery, during which the relative distance between the implanted catheter and the drainage bag changes significantly. If the tube is too long, it is prone to folding, knotting, or backflow due to redundancy, leading to poor drainage, increased local pressure, or bacterial growth, increasing the risk of infection. Conversely, if the tube is too short, excessive tension may be applied to the catheter when the patient moves or pulls, causing pain and discomfort, and potentially leading to catheter displacement, dislodgement, or even drainage failure or secondary trauma. Therefore, existing technologies still have significant shortcomings in terms of the adjustability, adaptability, and patient comfort of drainage tubes, and urgently need improvement to enhance the safety and convenience of clinical use. Utility Model Content
[0004] To address the above-mentioned shortcomings, the purpose of this utility model is to provide a structurally improved drainage bag to solve the problems of fixed drainage tube length and lack of flexible adjustment function in existing drainage bags. By setting corrugated folding sections and matching adjustable hanging rope structures on the drainage tube, the length of the drainage tube can be dynamically adjusted, thereby improving the adaptability of the drainage device in different body positions and clinical scenarios, enhancing patient comfort and safety during wear, and reducing the risks of folding, pulling, and displacement caused by excessively long or short tubes.
[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:
[0006] A drainage bag includes a bag body and a drainage pipe. The drainage pipe includes a main body section and a corrugated folded section disposed in the middle region of the main body section. A hanging rope is fixed to the upper part of the corrugated folded section. Multiple loops are spaced apart along the length direction on the side wall of the corrugated folded section. A fixing section is disposed along the length direction on the side of the main body section near the bag body. The hanging rope passes through the loops and connects to the fixing section at different points to adjust the length of the corrugated folded section.
[0007] Furthermore, two sets of the through loops are symmetrically arranged along the central axis of the drainage pipe, and the hanging rope passes through one through loop in each of the two sets and is then connected to the fixing section.
[0008] Furthermore, the hanging rope includes a fixing strap and a hook disposed at the end of the fixing strap; the fixing section includes a plurality of fixing rings disposed at intervals.
[0009] Furthermore, the fixing band is a medical-grade silicone band with an antibacterial silver ion coating on its surface; the hook is an arc-shaped titanium-plated metal hook, which is integrally connected to the fixing band through in-mold injection molding.
[0010] Furthermore, the hanging rope includes an adjusting strap with a hook at one end, and the fixing section is a rough surface fixed to the side wall of the drainage pipe. The hook surface of the adjusting strap can be attached to the rough surface of the drainage pipe.
[0011] Furthermore, the end of the drainage pipe away from the bag body has a threaded connection section, and a Luerso connector tube is threaded onto the external thread of the threaded connection section.
[0012] Furthermore, two connecting straps are fixed to the side of the bag near the drainage pipe.
[0013] Furthermore, the bag body surface is provided with multiple mounting rings at intervals, and an elastic band passes through the mounting rings. One end of the elastic band is formed with a hook surface, which can be attached to the surface of the elastic band.
[0014] The present invention can achieve the following beneficial effects:
[0015] 1. This application features a corrugated folded section on the drainage tube, allowing the patient to thread the hanging rope through different loops and connect it to the fixing section, thus adjusting the length of the corrugated folded section. This drainage bag allows the patient to adapt the length of the drainage tube to different body positions, reducing the occurrence of folding, twisting, or even knotting due to excessively long drainage tubes, and also reducing the pulling of the drainage tube due to its short length.
[0016] 2. An installation ring is provided on the bag body, and an elastic band passes through the installation ring, so that the drainage bag of this application can be more easily fixed to the patient; since the hook side of the elastic band can be pasted to any position on the surface of the elastic band, the fixing length is easy to adjust, and the elastic band can be fixed to various parts of the patient as needed.
[0017] 3. A threaded connection section is set at the end of the drainage pipe, and a Luerso connector pipe is detachably installed outside the threaded connection section, so that the drainage pipe can be adapted to buried pipes of different specifications, making it more adaptable. Attached Figure Description
[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments:
[0019] Figure 1 This is a schematic diagram of the overall structure of a drainage bag according to the present invention;
[0020] Figure 2 for Figure 1 Enlarged view of point A in the middle;
[0021] Figure 3 This is a partial schematic diagram illustrating the structure of another embodiment of the hanging rope according to this utility model;
[0022] Figure 4 for Figure 1 Enlarged view of point B in the middle.
[0023] The attached diagram lists the components represented by each number as follows:
[0024] 1. Bag body; 11. Mounting ring; 2. Drainage pipe; 21. Main body section; 22. Corrugated folded section; 23. Threaded ring; 24. Threaded connection section; 25. Luer cable connector pipe; 26. Connecting strap; 3. Hanging rope; 31. Fixing strap; 32. Hook; 33. Adjusting strap; 4. Fixing section; 41. Fixing ring; 5. Elastic band; 6. Drainage pipe; 61. Opening and closing 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 of the present utility model. 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 belong to the present utility model.
[0026] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.
[0027] like Figures 1 to 4 As shown, a drainage bag includes a bag body 1, with a drainage pipe 2 connected to the upper part of the bag body 1 and a drain pipe 6 connected to the lower part. The drain pipe 6 is equipped with an on / off valve 61 for controlling the discharge of accumulated liquid from the bag body 1. The drainage pipe 2 includes a main body section 21 and a corrugated folded section 22 located in the middle region. A hanging rope 3 is fixed above the corrugated folded section 22. Multiple loops 23 are spaced apart along the length of the sidewall of the corrugated folded section 22. A fixing section 4 is provided on the side of the main body section 21 closest to the bag body 1.
[0028] Two sets of loops are symmetrically arranged along the central axis of the drainage tube. By passing the hanging rope 3 through the two loops 23 at the same height, and connecting the end of the hanging rope 3 to different points of the fixing section 4, the length of the corrugated folding section 22 can be flexibly adjusted. When patients wear the drainage bag for daily activities, they may be in bed, get up, or walk. The installation position of the drainage bag varies with the change of the patient's position. This application designs the length of the drainage tube to be adjustable, so that patients can adjust the length of the drainage tube in a timely and convenient manner as needed, thereby improving the patient's wearing comfort.
[0029] The specific arrangement of the hanging cord 3 and the fixing section 4 includes the following two embodiments. In one embodiment, the hanging cord 3 includes a fixing band 31 and a hook 32 disposed at the end of the fixing band 31. The fixing band 31 is a medical silicone band with an antibacterial silver ion coating on its surface; the hook 32 is an arc-shaped titanium-plated metal hook, and the hook 32 and the fixing band 31 are integrally connected by in-mold injection molding, and the end of the hook 32 is smoothed; the fixing section 4 includes several spaced fixing rings 41. When adjusting the length of the corrugated folded section 22, the hook 32 can be hooked with different fixing rings 41 to adjust the length of the corrugated folded section 22. It should be noted that the hook 32 can be made of a material with deformation capability. When the hook 32 is easy to fall off the fixing ring 41, the hook 32 can be appropriately squeezed and deformed to improve the stability of the connection between the hook 32 and the fixing ring 41.
[0030] In another embodiment, the hanging rope 3 includes an adjustment band 33, the end of which is formed with a hook surface. The fixing section 4 is a long strip of rough surface fixed to the side wall of the drainage pipe 2. After the hanging rope 3 passes through the loop 23, the hook surface at the end can be pasted to different points on the rough surface. Then, the end of the hanging rope 3 is fixed by the Velcro structure, so as to adjust the length of the corrugated fold section 22.
[0031] The drainage tube 2, located away from the bag body 1, has a threaded connection section 24. A Luerso connector tube 25 is threaded onto the external thread of the threaded connection section 24. Drainage bags come in various forms, including thoracic drainage bags, abdominal drainage bags, nasobiliary drainage bags, and urine drainage bags. The drainage bag connects directly to the implanted tube in the patient's body to collect fluid. The threaded connection section 24 at the end of the drainage tube 2, with a detachable Luerso connector tube 25, allows the drainage tube 2 to accommodate various sizes of implanted tube connectors, thus improving the compatibility of the drainage bag.
[0032] Furthermore, two connecting straps 26 are fixed to one end of the bag 1 near the drainage tube 2. When medical staff need to hang the drainage bag on the hook by the patient's bedside to pour out the liquid in the drainage bag or perform other operations, the ends of the two connecting straps 26 can be tied tightly to form a loop so that the drainage bag can be hung on the hook by the patient's bedside. In addition, when the patient needs to fix the drainage bag to his body, the connecting straps 26 can be passed through the waistband and the ends of the two connecting straps 26 can be tied tightly to achieve fixation.
[0033] Furthermore, the surface of the bag body 1 is provided with multiple mounting rings 11 spaced around it, and an elastic band 5 passes through the mounting rings 11. One end of the elastic band 5 has a hook surface that can be attached to the surface of the elastic band 5. By setting the elastic band 5 and the fact that the hook surface of one end of the elastic band 5 can be attached to any area of the surface of the elastic band 5, the wrapping diameter of the elastic band 5 can be adjusted, thereby allowing the drainage bag of this application to be fixed to various parts of the patient's body. For example, the elastic band 5 can be wrapped around the patient's legs. If the patient wishes to fix the drainage bag around the abdomen, it can be fixed using the connecting strap 26.
[0034] In summary, this utility model discloses a drainage bag with an adjustable structure and strong adaptability. The core feature is the corrugated folded section 22 in the middle of the drainage tube 2, combined with the coordinated operation of the loop 23, hanging rope 3, and fixing section 4, to achieve flexible adjustment of the length of the drainage tube 2. Simultaneously, the design of the threaded connection section 24 and Luer connector tube 25 improves the compatibility with different specifications of internal catheters. Combined with the connecting strap 26 and elastic band 5 on the bag body 1, the convenience of fixing the drainage bag and the wearing comfort are enhanced. This utility model not only effectively solves the problems of tube kinking and displacement caused by the fixed tube length in existing drainage bags during actual use, but also significantly improves the applicability and safety of the drainage device in multiple positions and scenarios, showing good prospects for clinical application. Its reasonable structural design and simple manufacturing process make it widely applicable in various postoperative and intensive care drainage care scenarios, demonstrating significant practical value and industry application significance.
[0035] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Under the concept of this utility model, 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 different aspects of this utility model as described above. For the sake of brevity, they are not provided in detail. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A drainage bag, characterized in that: The device includes a bag body (1) and a drainage pipe (2). The drainage pipe (2) includes a main body section (21) and a corrugated folded section (22) located in the middle area of the main body section (21). A hanging rope (3) is fixed on the upper part of the corrugated folded section (22). Multiple loops (23) are spaced apart along the length direction on the side wall of the corrugated folded section (22). A fixing section (4) is provided along the length direction on the side of the main body section (21) near the bag body (1). The hanging rope (3) passes through the loops (23) and connects to the fixing section (4) at different points to adjust the length of the corrugated folded section (22).
2. The drainage bag according to claim 1, characterized in that: Two sets of the loops (23) are symmetrically arranged along the central axis of the drainage pipe (2). The hanging rope (3) passes through one loop (23) in each of the two sets and is then connected to the fixing section (4).
3. A drainage bag according to claim 2, characterized in that: The hanging rope (3) includes a fixing strap (31) and a hook (32) at the end of the fixing strap (31); the fixing section (4) includes a plurality of fixing rings (41) spaced apart.
4. A drainage bag according to claim 3, characterized in that: The fixing band (31) is a medical silicone band with an antibacterial silver ion coating on its surface; the hook (32) is an arc-shaped titanium-plated metal hook, which is integrally connected to the fixing band (31) through in-mold injection molding.
5. A drainage bag according to claim 2, characterized in that: The hanging rope (3) includes an adjustment belt (33), the end of which is formed with a hook surface. The fixing section (4) is a rough surface fixed to the side wall of the drainage pipe (2). The hook surface of the adjustment belt (33) can be attached to the rough surface of the drainage pipe (2).
6. A drainage bag according to claim 1, characterized in that: The end of the drainage pipe (2) away from the bag body (1) is formed with a threaded connection section (24), and the threaded connection section (24) is externally threaded with a Lurso connector pipe (25).
7. A drainage bag according to claim 1, characterized in that: Two connecting straps (26) are fixed on the side of the bag (1) near the drainage pipe (2).
8. A drainage bag according to claim 1, characterized in that: The bag body (1) has multiple mounting rings (11) spaced around its surface. An elastic band (5) passes through the mounting ring (11). One end of the elastic band (5) has a hook surface that can be attached to the surface of the elastic band (5).