Anti-reflux drainage box
By designing the support assembly and hinged rod structure of the anti-backflow drainage box, the problems of inaccurate scale recording and inconvenience of carrying were solved, achieving accuracy of fluid volume observation and convenience of carrying, and providing wound cleaning function.
Patent Information
- Application Number
- CN202422521182.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-17
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-10-17
AI Technical Summary
Existing drainage bags have inaccurate scale recordings and are prone to wrinkles and compression during use, affecting fluid volume observation and portability.
A backflow prevention drainage box was designed, which adopts a bracket assembly and a hinged rod structure. The hinged rod can be rotated to a parallel or abutting state to provide support and reduce volume. Combined with the arc-shaped crossbar design to fit the human body and increase carrying comfort, a cleaning interface is set on the drainage tube to dilute the exudate.
It effectively reduces bag wrinkles and compression, improves the accuracy of scale recording, enhances portability, and enables regular wound cleaning through the cleaning interface, reducing the possibility of fluid backflow.
Smart Images

Figure CN223490147U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of drainage boxes, and in particular to an anti-backflow drainage box. Background Technology
[0002] A drainage device generally refers to a tube used to drain blood or fluid from deep within the body or a surgical site after surgery. The end of the tube is attached to a transparent plastic bag to collect the drained fluid. It is used for urinary catheterization or to guide, collect, and manage exudate from wounds, the gastrointestinal tract, biliary tract, etc., to prevent postoperative infection and promote wound healing.
[0003] The utility model disclosed in CN219127424U discloses a drainage bag, including a bag body. The bottom center of the bag body is provided with a drain port, and the top center of the bag body is provided with a liquid inlet pipe. Two branch pipes are connected to the liquid inlet pipe. The bag body is mainly composed of an outer frame and a transparent bag set in the middle of the outer frame. A sleeve is provided on the bottom wall of the outer frame. The sleeve extends upward and to the top of the outer frame. A graduated rod is inserted into the inside of the sleeve. The outer surface of the graduated rod is coated with a luminescent coating.
[0004] During the use of the drainage bag, it is necessary to accurately record the amount of wound drainage fluid. In the above-mentioned technical solution, the drainage bag body is a soft bag shape, while its scale rod is a hard rod shape. If wrinkles appear on the surface of the bag body after the wound drainage fluid flows into the bag body, or if the bag body is squeezed or expands, the scale recording will be inaccurate. Utility Model Content
[0005] To reduce the possibility of inaccurate scale recording, this application provides an anti-backflow drainage box.
[0006] The anti-backflow drainage box provided in this application adopts the following technical solution:
[0007] A backflow prevention drainage box includes a bag body and a support assembly. A drainage tube is provided at the top of the bag body, and a drain outlet is provided at the bottom of the bag body. The support assembly is used to support the bag body. The support assembly includes two fixed frames and two sets of hinged rods. The two fixed frames are respectively fixedly connected to the bag body. The fixed frames are provided with liquid level marks. The two sets of hinged rods correspond to the two fixed frames respectively. One end of the two sets of hinged rods is respectively hinged to the corresponding fixed frame, and the ends of the two sets of hinged rods away from the corresponding fixed frame are respectively hinged to each other.
[0008] By adopting the above technical solution, when the two sets of hinge rods rotate to the point where their axes are parallel to each other, the two fixed frames and the two sets of hinge rods support the bag body, reducing the possibility of wrinkles on the bag surface and compression of the bag body. This facilitates the observation of the volume of wound drainage fluid inside the bag and reduces the possibility of inaccurate scale recording. When the two sets of hinge rods rotate to the point where they abut each other, the volume of the drainage box is reduced, making it easier for patients who need to carry the drainage box out to carry it.
[0009] Preferably, one set of hinge rods is provided with a locking block, and the other set of hinge rods is provided with a locking groove that can engage with the locking block. When one set of hinge rods rotates to be coaxial with the other set of hinge rods, the locking block engages with the locking groove.
[0010] By adopting the above technical solution, when one set of hinge rods rotates to be coaxial with the other set of hinge rods, the locking block engages with the locking groove, keeping the two sets of hinge rods coaxial and supporting the bag body. This reduces the possibility of wrinkles on the bag surface and compression of the bag body, facilitates the observation of the volume of wound drainage fluid inside the bag, and reduces the possibility of inaccurate scale recording.
[0011] Preferably, one set of the hinge rods is provided with a locking block, and the other set of the hinge rods is provided with a locking groove that can engage with the locking block. When one set of hinge rods rotates to abut against the side of the other set of hinge rods, the locking block engages with the locking groove.
[0012] By adopting the above technical solution, when the two sets of hinge rods rotate to the side and abut against each other, the volume of the drainage box is reduced, making it easier for patients who need to carry the drainage box out to carry it. At this time, the locking block and the locking slot engage to keep the two sets of hinge rods in abutting state, reducing the possibility of the hinge rods moving during carrying and reducing the possibility of inconvenience in carrying.
[0013] Preferably, each of the two fixing frames is provided with a hanging ear.
[0014] By adopting the above technical solution, it is convenient to hang the drainage box.
[0015] Preferably, the fixing frame includes two horizontal bars and two vertical bars, the two horizontal bars and the two vertical bars are connected end to end, and the hanging ear is fixedly connected to the upper horizontal bar.
[0016] By adopting the above technical solution, the middle of the fixing frame is left open by connecting the ends of the horizontal and vertical bars, which makes it easier to observe the amount of wound drainage fluid in the bag from the middle of the fixing frame.
[0017] Preferably, the crossbar is arranged in an arc shape.
[0018] By adopting the above technical solution, the drainage box can fit the human body more closely when carried, thereby reducing discomfort during carrying.
[0019] Preferably, the end of the drainage tube away from the bag body is provided with a cleaning interface, and the cleaning interface is provided with a second one-way valve.
[0020] By adopting the above technical solution, a cleaning port is added above the wound location of the drainage tube for cleaning the wound. In cases where the exudate is viscous, the wound can be cleaned regularly to dilute the exudate. The one-way valve can reduce the possibility of the wound drainage fluid flowing out from the cleaning port side.
[0021] The main technical effects of this utility model are reflected in the following aspects:
[0022] 1. This utility model, by setting up a support assembly, when the two sets of hinge rods rotate to the point where their axes are parallel to each other, the two fixed frames and the two sets of hinge rods support the bag body, reducing the possibility of wrinkles on the bag surface and compression of the bag body, facilitating the observation of the volume of wound drainage fluid inside the bag, and reducing the possibility of inaccurate scale recording. When the two sets of hinge rods rotate to the point where they abut each other, the volume of the drainage box is reduced, making it easier for patients who need to carry the drainage box out to carry it.
[0023] 2. By setting a snap-fit block and a snap-fit groove, when one set of hinge rods rotates to be coaxial with the other set of hinge rods, the snap-fit block and the snap-fit groove engage, keeping the two sets of hinge rods coaxial, supporting the bag body, reducing the possibility of wrinkles on the bag surface and compression of the bag body, facilitating the observation of the amount of wound drainage fluid inside the bag, and reducing the possibility of inaccurate scale recording.
[0024] 3. By making the crossbar arc-shaped, this utility model allows the drainage box to fit the human body more closely when carried. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.
[0026] Figure 2 It is along Figure 1 Enlarged view of point A in the middle.
[0027] Figure 3 This is a schematic diagram of the supporting component structure in an embodiment of this application.
[0028] Figure 4 It is along Figure 2 Enlarged view of point B in the middle.
[0029] Explanation of reference numerals in the attached drawings: 1. Bag body; 11. Drainage tube; 111. Cleaning interface; 12. Drain outlet; 2. Support assembly; 21. Fixing frame; 211. Horizontal bar; 2211. Hanging lug; 212. Vertical bar; 2221. Liquid level mark; 22. Hinge rod; 221. Snap-fit block; 222. Snap-fit groove; 223. Snap-fit block; 224. Snap-fit groove. Detailed Implementation
[0030] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail to make the technical solution of this application easier to understand and master.
[0031] This application discloses an anti-backflow drainage box.
[0032] Reference Figures 1-4 This embodiment of an anti-backflow drainage box includes a bag body 1 and a support assembly 2. A drainage tube 11 is fixedly connected to the upper part of the bag body 1, and a first single-phase valve is fixedly connected to the end of the drainage tube 11 near the bag body 1 to reduce the possibility of backflow of wound drainage fluid. A drain port 12 is fixedly connected to the lower part of the bag body 1. The support assembly 2 is used to support the bag body 1. The support assembly 2 includes two fixed frames 21 and two sets of hinge rods 22. The two fixed frames 21 are fixedly connected to the bag body 1 respectively. Liquid level marks 2221 are provided on the fixed frames 21. The two sets of hinge rods 22 correspond to the two fixed frames 21 respectively. One end of the two sets of hinge rods 22 is hinged to the corresponding fixed frame 21, and the ends of the two sets of hinge rods 22 away from the corresponding fixed frame 21 are hinged to each other.
[0033] Reference Figures 1-4 When the two sets of hinge rods 22 rotate to their axes being parallel to each other, the two fixed frames 21 and the two sets of hinge rods 22 support the bag body 1, reducing the possibility of wrinkles on the surface of the bag body 1 and compression of the bag body 1, making it easier to observe the volume of wound drainage fluid in the bag body 1 and reducing the possibility of inaccurate scale recording. When the two sets of hinge rods 22 rotate to their mutual contact, the volume of the drainage box is reduced, making it easier for patients who need to carry the drainage box out to carry it.
[0034] Reference Figure 1 and Figure 3, the fixed frame 21 includes two cross bars 211 and two vertical bars 212. The two cross bars 211 and the two vertical bars 212 are connected end to end in a "square" shape. Each set of hinged rods 22 includes four hinged rods 22, and the four hinged rods 22 are respectively connected by hinges at the four corners of the fixed frame 21. The four hinged rods 22 of one set correspond to the four hinged rods 22 of the other set respectively. Hanging ears 2211 are fixedly connected to the two fixed frames 21 respectively, which is convenient for hanging the drainage box. The hanging ears 2211 are fixedly connected to the upper cross bar 211. The middle part of the fixed frame 21 is emptied by the end-to-end connection of the cross bar 211 and the vertical bar 212, which is convenient for observing the volume of the wound drainage fluid in the bag body 1 from the middle of the fixed frame 21. The cross bar 211 is arranged in an arc shape, so that when carrying the drainage box, the drainage box can fit the human body more closely to reduce the discomfort during carrying.
[0035] Refer to Figures 1-4 , clamping blocks 221 are respectively fixedly connected to one set of hinged rods 22, and clamping grooves 222 that can be clamped and matched with the clamping blocks 221 are respectively formed on the other set of hinged rods 22. When one set of hinged rods 22 rotates to be coaxial with the corresponding hinged rods 22 of the other set, the clamping blocks 221 are clamped and matched with the clamping grooves 222. When one set of hinged rods 22 rotates to be coaxial with the corresponding hinged rods 22 of the other set, the clamping blocks 221 are clamped and matched with the clamping grooves 222, so that the two sets of hinged rods 22 maintain a coaxial state, support the bag body 1, reduce the possibility of wrinkles on the surface of the bag body 1 and the bag body 1 being squeezed, facilitate observing the volume of the wound drainage fluid in the bag body 1, and reduce the possibility of inaccurate scale recording.
[0036] Refer to Figures 1-4 , blocks 223 are respectively fixedly connected to one set of hinged rods 22, and slots 224 that can be clamped and matched with the blocks 223 are respectively formed on the other set of hinged rods 22. When one set of hinged rods 22 rotates to abut against the side surface of the corresponding hinged rods 22 of the other set, the blocks 223 are clamped and matched with the slots 224. When the two sets of hinged rods 22 rotate to abut against each other on the side surfaces, the volume of the drainage box is reduced, which is convenient for patients who need to carry the drainage box out. At this time, the blocks 223 are clamped and matched with the slots 224, so that the two sets of hinged rods 22 maintain an abutting state, reduce the possibility of the hinged rods 22 moving during carrying, and reduce the possibility of inconvenient carrying.
[0037] Refer to Figure 1 and Figure 3A cleaning port 111 is fixedly connected to the end of the drainage tube 11 away from the bag body 1. A cleaning port 111 is added above the wound location on the drainage tube 11. If necessary, a syringe containing cleaning fluid can be connected to the cleaning port 111, and the cleaning fluid can be injected into the cleaning port 111 through the syringe to clean the wound. For cases with thick exudate, the wound can be cleaned periodically to dilute the exudate. A second one-way valve is fixedly connected inside the cleaning port 111. The second one-way valve reduces the possibility of wound drainage fluid flowing out from one side of the cleaning port 111.
[0038] Of course, the above are just typical examples of this application. In addition, this application may have many other specific implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed in this application.
Claims
1. A backflow prevention drainage box, characterized in that: The device includes a bag body (1) and a support assembly (2). The bag body (1) has a drainage tube (11) on its upper part and a drain port (12) on its lower part. The support assembly (2) is used to support the bag body (1). The support assembly (2) includes two fixed frames (21) and two sets of hinge rods (22). The two fixed frames (21) are fixedly connected to the bag body (1). The fixed frames (21) are provided with liquid level marks (2221). The two sets of hinge rods (22) correspond to the two fixed frames (21) respectively. One end of the two sets of hinge rods (22) is hinged to the corresponding fixed frame (21) respectively. The ends of the two sets of hinge rods (22) away from the corresponding fixed frame (21) are hinged to each other respectively.
2. The anti-backflow drainage box according to claim 1, characterized in that: One set of the hinge rods (22) is provided with a snap-fit block (221), and the other set of the hinge rods (22) is provided with a snap-fit groove (222) that can snap-fit with the snap-fit block (221). When one set of hinge rods (22) rotates to be coaxial with the other set of hinge rods (22), the snap-fit block (221) snaps into the snap-fit groove (222).
3. The anti-backflow drainage box according to claim 2, characterized in that: One set of the hinge rods (22) is provided with a locking block (223), and the other set of the hinge rods (22) is provided with a locking groove (224) that can engage with the locking block (223). When one set of hinge rods (22) rotates to abut against the side of the other set of hinge rods (22), the locking block (223) engages with the locking groove (224).
4. The anti-backflow drainage box according to claim 1, characterized in that: Each of the two fixed frames (21) is provided with a hanging ear (2211).
5. The anti-backflow drainage box according to claim 4, characterized in that: The fixed frame (21) includes two horizontal bars (211) and two vertical bars (212), with the two horizontal bars (211) and the two vertical bars (212) connected end to end, and the hanging ear (2211) is fixedly connected to the upper horizontal bar (211).
6. The anti-backflow drainage box according to claim 5, characterized in that: The crossbar (211) is arranged in an arc shape.
7. The anti-backflow drainage box according to claim 1, characterized in that: The end of the drainage tube (11) away from the bag body (1) is provided with a cleaning interface (111), and a second one-way valve is provided in the cleaning interface (111).
Citation Information
Patent Citations
Drainage bag
CN219127424U