Drainage bag

By designing an insertion port and a binding strap into the drainage bag, disinfection and portability are achieved, solving the safety and convenience issues of existing drainage devices and improving the patient's treatment experience and safety.

CN224207143UActive Publication Date: 2026-05-08WENZHOU CENT HOSPITAL
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
WENZHOU CENT HOSPITAL
Filing Date
2025-02-08
Publication Date
2026-05-08

AI Technical Summary

Technical Problem

Existing drainage devices have limited functionality and cannot disinfect waste fluids, making medical staff susceptible to infection. They are also not portable, affecting patients' normal lives and treatment recovery.

Method used

A drainage bag with a dispensing port and a tie was designed. It can dispense disinfectant tablets or disinfectant solution for internal disinfection and store disinfectant supplies through a pre-storage chamber. Combined with a flexible interface and an anti-backflow valve, it enables portable and safe drainage operations.

Benefits of technology

It improves the safety and convenience of the drainage device, prevents infection from waste liquid splashing, makes it easy for patients to carry and use, solves the problems of device switching and backflow suction, and improves the convenience and comfort of patients' treatment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The drainage bag comprises a bag body, the upper end and the lower end of the outer side wall of the bag body are each provided with a set of through holes which are not communicated with the interior of the bag body, a bandage rope is jointly arranged in the corresponding set of through holes, a throwing opening communicated with the interior of the bag body is formed in the upper portion of the outer side wall of the bag body, and a throwing assembly is arranged in the throwing opening. An operator puts disinfection tablets or disinfectant into the bag body for disinfection through the putting assembly, and the putting assembly comprises a sealing seat fixed in the putting opening and a sealing plug matched with the interior of the sealing seat; disinfecting articles are put into the bag body through the putting opening, waste liquid in the bag body is disinfected, the waste liquid is prevented from flowing out to cause exposure infection of medical staff in treatment, the safety of the device is improved, meanwhile, the upper end and the lower end of the bag body are respectively provided with the bandage ropes used for being bound and fixed with the body of a patient, and the device is convenient to use. A patient can conveniently carry the bed when walking out of the bed, and convenience and comfort of the patient in the treatment period are improved.
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Description

Technical Field

[0001] This utility model relates to the field of drainage device technology, specifically a drainage bag. Background Technology

[0002] A drainage device is a medical instrument typically used to collect and manage bodily fluids such as blood, urine, and ascites. It has wide applications in the medical field, commonly used for drainage in cases such as post-operative recovery, trauma, and pleural effusion. Its principle is to drain the fluid through a drainage tube into a drainage bag, and then remove it from the body by gravity or negative pressure. It aims to achieve the drainage, collection, treatment, and discharge of bodily fluids to meet the needs of various medical procedures, effectively reducing the occurrence of infections and other complications.

[0003] Existing drainage devices are limited in function and cannot disinfect waste fluid within the device itself. This leads to potential splashing and infection issues when medical staff handle discarded drainage bags. Furthermore, these devices are not portable, making them inconvenient to place when patients need to get up, move around, or use the restroom, thus disrupting their daily lives. Clinical drainage devices come in screw-type and straight-type designs, requiring frequent switching between the two based on patient needs. This cumbersome process increases the risk of misuse of different drainage methods, potentially prolonging the patient's recovery period.

[0004] Therefore, a drainage bag was proposed. Utility Model Content

[0005] The purpose of this invention is to provide a drainage bag to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a drainage bag, comprising a bag body, wherein a set of through holes not communicating with the interior are respectively opened at the upper and lower ends of the outer side wall of the bag body, and a binding rope is provided inside the corresponding set of through holes; an inlet communicating with the interior is opened at the upper part of the outer side wall of the bag body, and an inlet assembly is provided inside the inlet assembly; the operator inserts disinfectant tablets or disinfectant solution into the bag body for disinfection through the inlet assembly; the inlet assembly includes a sealing seat fixed inside the inlet assembly and a sealing plug matching the inside of the sealing seat; the movable sealing plug is inserted into the inside of the sealing seat to isolate the inside of the bag body from the outside.

[0007] Preferably, the sealing seat has a T-shaped groove inside that matches the outer wall of the sealing plug, and the outer wall of the sealing plug extends into a handle for inserting or removing the sealing plug.

[0008] Preferably, the dispensing component includes a fixed base inside the dispensing port, and the fixed base is connected to a pre-storage chamber with its outer port angled upward. An isolation block is installed inside the pre-storage chamber and its inner side is divided to form a storage cavity for storing disinfectant. An isolation membrane is provided at the junction of the pre-storage chamber and the bag body. A spike is movably installed inside the isolation block. When the spike moves inside the isolation block, it punctures the isolation membrane, allowing the disinfectant to flow into the bag body for disinfection.

[0009] Preferably, a limiting block is installed at the upper end of the spike, the limiting block is slidably installed inside the isolation block, and a screw cap is rotatably installed at the upper end of the limiting block and threadedly installed at the upper port of the pre-storage chamber. Rotating the screw cap pushes the limiting block to move the spike towards the isolation membrane.

[0010] Preferably, a dispensing part that communicates with the inside of the storage chamber is installed on the upper side wall of the pre-storage chamber, and a sealing head is inserted into the upper end of the dispensing part to facilitate the addition of disinfectant.

[0011] Preferably, a flexible interface is installed at the liquid inlet at the upper end of the bag body, and a matching connecting tube is inserted into the interior of the flexible interface. The outer wall of the bag body is provided with scale lines for observing the liquid storage inside.

[0012] Preferably, a liquid outlet pipe is installed at the liquid outlet at the upper end of the bag body, and an anti-backflow valve for controlling the liquid flow is connected to the outer wall of the liquid outlet pipe.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model allows disinfectant to be dispensed into the bag through the inlet, disinfecting the waste liquid inside the bag and preventing the waste liquid from flowing out and causing exposure and infection to medical staff, thus increasing the safety of the device. At the same time, straps are provided at the top and bottom of the bag for binding and securing it to the patient's body, making it convenient for the patient to carry with them when getting out of bed and walking, thus improving the convenience and comfort of the patient during treatment.

[0015] 2. This utility model can also pre-store the disinfectant in the storage cavity of the pre-storage chamber. During disinfection, the rotating pusher moves downward inside the pre-storage chamber, thereby driving the limiting block to push the spikes to pierce the isolation membrane, allowing the disinfectant to enter the bag for disinfection.

[0016] 3. This utility model helps solve the problem of switching between screw and straight inlets in the drainage device by setting up a flexible interface and connecting tube. At the same time, the setting up of the liquid outlet tube and anti-backflow valve solves the problem of backflow and suction in the drainage device, making the bag convenient for actual use. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the main structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the bottom structure of Embodiment 1 of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of Embodiment 2 of this utility model;

[0020] Figure 4 This is a cross-sectional structural diagram of Embodiment 2 of the present invention.

[0021] In the diagram: 1. Bag body; 2. Dispensing port; 21. Sealing seat; 22. T-slot; 23. Sealing plug; 24. Handle; 31. Fixing seat; 32. Pre-storage chamber; 33. Screw cap; 34. Isolation block; 35. Storage cavity; 36. Limiting block; 37. Spike; 38. Isolation membrane; 4. Dispensing part; 5. Sealing head; 6. Flexible interface; 7. Connecting pipe; 8. Through hole; 9. Tie rope; 10. Dispensing pipe; 11. Anti-backflow valve; 12. Scale line. Detailed Implementation

[0022] 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.

[0023] Example 1: Please refer to Figure 1-4 This utility model provides a technical solution: a drainage bag, including a bag body 1. A set of through holes 8, not communicating with the interior, are respectively opened at the upper and lower ends of the outer wall of the bag body 1. A binding rope 9 is provided inside each set of through holes 8. An inlet 2, communicating with the interior, is opened at the upper part of the outer wall of the bag body 1. An inlet 2 is provided inside the inlet 2. An inlet assembly is provided inside the inlet 2. The operator uses the inlet assembly to insert disinfectant tablets or disinfectant solution into the bag body 1 for disinfection. The inlet assembly includes a sealing seat 21 fixed inside the inlet 2 and a sealing plug 23 matching the interior of the sealing seat 21. The sealing plug 23 is moved and inserted into the sealing seat 21 to isolate the interior of the bag body 1 from the outside. Disinfectant is inlet 2 to disinfect the waste liquid inside the bag body 1, preventing waste liquid from flowing out and causing exposure and infection to medical personnel, thus increasing the safety of the device. At the same time, binding ropes 9 are respectively provided at the upper and lower ends of the bag body 1 for binding and securing to the patient's body, making it convenient for the patient to carry when getting out of bed and improving the patient's convenience and comfort during treatment.

[0024] In this embodiment, the interior of the sealing seat 21 is provided with a T-shaped groove 22 that matches the outer wall of the sealing plug 23, and the outer wall of the sealing plug 23 extends into a handle 24 for inserting or removing the sealing plug 23.

[0025] Example 2: The dispensing assembly includes a fixing base 31 fixed inside the dispensing port 2. The fixing base 31 has a pre-storage chamber 32 with its outer port angled upwards connected internally. The pre-storage chamber 32 is angled upwards to facilitate liquid flow within the storage cavity 35. An isolation block 34 is installed inside the pre-storage chamber 32, and its inner side is divided to form a storage cavity 35 for storing disinfectant products. An isolation membrane 38 is provided at the junction of the pre-storage chamber 32 and the bag body 1. Spikes 37 are movably installed inside the isolation block 34. The internal moving spike 37 punctures the isolation membrane 38, allowing the disinfectant stored in the storage cavity 35 to flow into the bag 1 for disinfection. A limit block 36 is installed at the upper end of the spike 37. The limit block 36 is slidably installed inside the isolation block 34. Moving the limit block 36 moves the spike 37 together, improving the stability of use. A screw cap 33 is rotatably installed at the upper end of the limit block 36 and threaded onto the upper port of the pre-storage chamber 32. Rotating the screw cap 33 pushes the limit block 36, causing the spike 37 to move towards the isolation membrane 38.

[0026] In this embodiment, a dispensing part 4 that communicates with the inside of the storage cavity 35 is installed on the upper side of the outer wall of the pre-storage chamber 32. A sealing head 5 is inserted into the upper end of the dispensing part 4 to facilitate the addition of disinfectant. If the disinfectant stored in the storage cavity 35 is too much or needs to be added, the sealing head 5 is pulled out of the dispensing part 4 and disinfectant is added inside.

[0027] In this embodiment, a flexible interface 6 is installed at the liquid inlet at the upper end of the bag body 1. A matching connecting tube 7 is inserted into the inside of the flexible interface 6. A scale line 12 for observing the liquid storage inside the bag body 1 is provided on the outer wall of the bag body 1. The flexible interface 6 is connected to the connecting tube 7 for inputting liquid, which solves the problem of switching between the screw port and the straight port of the drainage device. At the same time, the scale line 12 makes it convenient to observe the storage amount of waste liquid inside.

[0028] A liquid outlet pipe 10 is installed at the liquid outlet at the upper end of the bag body 1. An anti-backflow valve 11 is connected to the outer wall of the liquid outlet pipe 10 to control the flow of liquid. When the waste liquid is discharged through the liquid outlet pipe 10, the flow of waste liquid inside the liquid outlet pipe 10 is controlled by the anti-backflow valve 11 to facilitate the discharge of liquid.

[0029] The working principle is as follows: In actual use, first check whether all parts of the drainage bag are intact. Insert the connecting tube 7 into the soft interface 6 of the liquid inlet at the upper end of the bag body 1 to ensure a tight connection without leakage. Depending on the patient's condition, if it is necessary to get out of bed and walk, the strap 9 can be passed through the through holes 8 at the upper and lower ends of the outer wall of the bag body 1 to tie the drainage bag to a suitable position on the patient's body for easy carrying. During the drainage process, the waste liquid flows into the bag body 1 through the connecting tube 7. The amount of waste liquid can be observed through the scale line 12 on the outer wall of the bag body 1 to understand the drainage situation in a timely manner. If the sealing seat 21 and sealing plug 23 are used as the dispensing components, when disinfection is required... When disinfection is performed, hold the handle 24 of the sealing plug 23 and pull the sealing plug 23 out of the T-shaped groove 22 of the sealing seat 21. Put the disinfectant tablet or disinfectant into the bag body 1 through the dispensing port 2. Then reinsert the sealing plug 23 into the sealing seat 21 to isolate the inside of the bag body 1 from the outside for disinfection. If the dispensing component of the pre-storage chamber 32 is used, add the disinfectant to the storage chamber 35 in advance through the dispensing part 4 and the sealing head 5. When disinfecting, rotate the screw cap 33 to move it downward at the upper port of the pre-storage chamber 32, push the limiting block 36 to drive the spike part 37 to pierce the isolation membrane 38, and let the disinfectant flow into the bag body 1 for disinfection.

[0030] When waste liquid needs to be discharged, open the anti-backflow valve 11 on the outlet pipe 10. Under the action of gravity, the waste liquid will be discharged from the outlet pipe 10. After the discharge is completed, close the anti-backflow valve 11 to prevent backflow and backflow. After use, properly dispose of the drainage bag to avoid cross-infection.

[0031] 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 drainage bag, comprising a bag body (1), characterized in that: The upper and lower ends of the outer wall of the bag (1) are respectively provided with a set of through holes (8) that are not connected to the interior. A binding rope (9) is provided inside the corresponding set of through holes (8). An inlet (2) connected to the interior is provided on the upper part of the outer wall of the bag (1). An inlet (2) is provided inside the inlet (2). An inlet component is provided inside the inlet (2). The operator puts disinfectant tablets or disinfectant into the bag (1) for disinfection through the inlet component. The inlet component includes a sealing seat (21) fixed inside the inlet (2) and a sealing plug (23) that matches the inside of the sealing seat (21). The sealing plug (23) is moved and inserted into the inside of the sealing seat (21) to isolate the inside of the bag (1) from the outside.

2. The drainage bag according to claim 1, characterized in that: The sealing seat (21) has a T-shaped groove (22) inside that matches the outer wall of the sealing plug (23), and the outer wall of the sealing plug (23) extends into a handle (24) for inserting or removing the sealing plug (23).

3. The drainage bag according to claim 1, characterized in that: The dispensing assembly includes a fixed base (31) fixed inside the dispensing port (2). The fixed base (31) is connected to a pre-storage chamber (32) with its outer port angled upward. An isolation block (34) is installed inside the pre-storage chamber (32) and its inner side is divided to form a storage cavity (35) for storing disinfectant. An isolation membrane (38) is provided at the junction of the pre-storage chamber (32) and the bag body (1). A spike (37) is movably installed inside the isolation block (34). The spike (37) moves inside the isolation block (34) to puncture the isolation membrane (38), allowing the disinfectant to flow into the bag body (1) for disinfection.

4. The drainage bag according to claim 3, characterized in that: A limiting block (36) is installed at the upper end of the spike (37). The limiting block (36) is slidably installed inside the isolation block (34). A screw cap (33) is rotatably installed at the upper end of the limiting block (36) and threadedly installed at the upper port of the pre-storage chamber (32). Rotating the screw cap (33) pushes the limiting block (36) to move the spike (37) toward the isolation membrane (38).

5. The drainage bag according to claim 3, characterized in that: An injection section (4) communicating with the inside of the storage cavity (35) is installed on the upper side wall of the pre-storage chamber (32). A sealing head (5) is inserted into the upper end of the injection section (4) to facilitate the addition of disinfectant.

6. The drainage bag according to claim 1, characterized in that: A flexible interface (6) is installed at the liquid inlet at the upper end of the bag body (1). A matching connecting tube (7) is inserted into the inside of the flexible interface (6). A scale line (12) for observing the liquid storage inside the bag body (1) is provided on the outer wall of the bag body (1).

7. The drainage bag according to claim 6, characterized in that: A liquid outlet pipe (10) is installed at the liquid outlet at the upper end of the bag body (1), and an anti-backflow valve (11) for controlling the flow of liquid is connected to the outer wall of the liquid outlet pipe (10).