Medical dialysate filtering device
By introducing mounting brackets, locking components, and limiting components into the medical dialysis fluid filtration device, the problem of unstable fixation of the elastic plastic clips was solved, enabling convenient loading and unloading of the collection frame and stable installation, thus improving the stability of the device.
Patent Information
- Application Number
- CN202521933461.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-09
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-09
AI Technical Summary
Existing medical dialysis fluid filtration devices are not very stable when fixed with elastic plastic clips, and are easily detached due to accidental contact, causing inconvenience.
The design incorporates a mounting bracket, a locking assembly, and a limiting assembly. The locking assembly uses slots and torsion springs to ensure stable installation of the collection frame, while the limiting assembly uses guide rods, guide plates, and telescopic springs to enhance installation stability.
This allows for easy loading and unloading of the collection box and secure installation, preventing accidental detachment and improving the installation stability of the device.
Smart Images

Figure CN224671871U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of dialysis fluid filtration technology, and in particular to a medical dialysis fluid filtration device. Background Technology
[0002] A medical dialysis fluid filtration device is a key medical device or consumable specifically used to purify dialysis fluid during hemodialysis. Its core function is to remove bacteria, endotoxins, particles, and other harmful impurities from the dialysis fluid, ensuring its biocompatibility. When using a medical dialysis fluid filtration device, a flexible plastic clip that matches the size of the filter is usually used. The device is then installed on the dialysis fluid filter using the elasticity of the clip. Absorbent cotton is then placed on the clip to absorb any leaked dialysis fluid. Although using the elasticity of the clip for fixation is quick, it is not very stable and can easily detach from the filter due to accidental contact, which is inconvenient.
[0003] Therefore, it is necessary to design a medical dialysis fluid filtration device that allows for easy loading and unloading of the first and second collection frames while ensuring stable installation and preventing accidental detachment. Utility Model Content
[0004] To overcome the shortcomings of using elastic plastic clips to fix medical dialysis fluid filters, which is quick but has poor stability and is prone to accidental detachment due to accidental contact, this invention provides a medical dialysis fluid filter that allows for easy installation and removal of the first and second collection frames while ensuring stable installation and preventing accidental detachment.
[0005] The technical solution is as follows: A medical dialysis fluid filtration device includes a filter, a mounting frame, a first collection frame, a first connecting ring, a second collection frame, a second connecting ring, a locking component, and a limiting component. The mounting frame is connected to the middle of the filter. The first collection frame is placed on the right side of the mounting frame. The first connecting ring is rotatably and slidably connected to the lower part of the first collection frame. The second collection frame is placed on the left side of the mounting frame. The second connecting ring is rotatably and slidably connected to the lower part of the second collection frame. The second connecting ring contacts the first connecting ring. The mounting frame is provided with a locking component that can lock the first collection frame and the second collection frame. The mounting frame is also provided with a limiting component that can limit the outer sides of the first collection frame and the second collection frame.
[0006] As a further preferred option, a connecting pipe is provided on the upper side of the filter.
[0007] As a further preferred option, both the first and second collection frames have slots at their lower parts.
[0008] As a further preferred embodiment, the positioning assembly includes a limiting frame and a torsion spring. The limiting frame is rotatably connected to the mounting frame. Both the first and second collection frames are engaged with the limiting frame via slots. A torsion spring connects the limiting frame and the mounting frame.
[0009] As a further preferred embodiment, a limiting component is also included. The limiting component includes a guide rod, a guide plate, a pressing block, a sliding rod, and a telescopic spring. Guide rods are connected to the lower sides of both the left and right sides of the mounting frame, and guide plates are connected to the lower sides of both the left and right sides of the limiting frame. Sliding rods are slidably connected to the guide rods, and the sliding rods are slidably engaged with the adjacent guide plates. Pressing blocks are connected to the upper side of the sliding rods, and telescopic springs are connected between the sliding rods and the adjacent guide rods.
[0010] As a further preferred option, the extrusion block has a micro-arc structure.
[0011] Compared with the prior art, the present invention has the following advantages: 1. The present invention places the first collection frame and the second collection frame on the left and right sides of the mounting frame respectively, then releases the limiting frame, and the torsion spring returns to its original state, so that the first collection frame and the second collection frame are engaged with the limiting frame. Then the first connecting ring and the second connecting ring are rotated 90 degrees, which achieves the effect of facilitating the loading and unloading of the first collection frame and the second collection frame while ensuring stable installation and preventing accidental detachment.
[0012] 2. When the limiting frame is released, the torsion spring returns to its original state, causing the limiting frame to rotate and reset. This causes the guide plate to rotate, which in turn causes the slide rod to move along the guide plate and move upward. This causes the extrusion block to move upward, so that both the first collection frame ring and the second collection frame come into contact with the extrusion block. This allows for limiting the outer sides of the first and second collection frames, improving the stability of the installation. Attached Figure Description
[0013] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0014] Figure 2 This is a three-dimensional structural diagram of the filter and collection frame components of this utility model.
[0015] Figure 3 This is a three-dimensional structural diagram of the mounting bracket and connecting ring and other components of this utility model.
[0016] Figure 4 This is a three-dimensional structural diagram of the limiting frame and torsion spring components of this utility model.
[0017] Figure 5 This is a three-dimensional structural diagram of the guide rod and extrusion block of this utility model.
[0018] The labels in the diagram are as follows: 1. Filter, 2. Mounting bracket, 3. First collection frame, 4. First connecting ring, 5. Second collection frame, 6. Second connecting ring, 7. Restriction frame, 8. Torsion spring, 9. Guide rod, 10. Guide plate, 11. Extrusion block, 12. Slide rod, 13. Telescopic spring. Detailed Implementation
[0019] 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.
[0020] A medical dialysis fluid filtration device, such as Figures 1-5 As shown, the device includes a filter 1, a mounting bracket 2, a first collection frame 3, a first connecting ring 4, a second collection frame 5, a second connecting ring 6, a locking assembly, and a limiting assembly. The filter 1 has a connecting pipe on its upper side for easy docking. The mounting bracket 2 is connected to the middle of the filter 1. The first collection frame 3 is placed on the right side of the mounting bracket 2. The first connecting ring 4 is rotatably and slidably connected to the lower part of the first collection frame 3. The second collection frame 5 is placed on the left side of the mounting bracket 2. The lower parts of both the first collection frame 3 and the second collection frame 5 have slots for easy locking. The second connecting ring 6 is rotatably and slidably connected to the lower part of the second collection frame 5. The second connecting ring 6 contacts the first connecting ring 4. The mounting bracket 2 is equipped with a locking assembly and a limiting assembly.
[0021] like Figure 4 and Figure 5 As shown, the locking assembly includes a limiting frame 7 and a torsion spring 8. The limiting frame 7 is rotatably connected to the mounting frame 2. The first collection frame 3 and the second collection frame 5 are both locked to the limiting frame 7 through slots. The torsion spring 8 connects the limiting frame 7 and the mounting frame 2.
[0022] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, it also includes a limiting assembly, which includes a guide rod 9, a guide plate 10, a pressing block 11, a sliding rod 12, and a telescopic spring 13. The lower sides of the left and right sides of the mounting frame 2 are connected to the guide rod 9, and the lower sides of the left and right sides of the limiting frame 7 are connected to the guide plate 10. The guide rod 9 is slidably connected to the sliding rod 12, and the sliding rod 12 is slidably engaged with the adjacent guide plate 10. The upper side of the sliding rod 12 is connected to the pressing block 11, which has a slightly arc-shaped structure to facilitate the limiting of the first collection frame 3 and the second collection frame 5. The sliding rod 12 is connected to the adjacent guide rod 9 by a telescopic spring 13.
[0023] When using this device, first install the filter 1 onto the dialysis machine through the hose, then rotate the limiting frame 7 to deform the torsion spring 8. Then place the first collection frame 3 and the second collection frame 5 on the left and right sides of the mounting frame 2 respectively. Then release the limiting frame 7, the torsion spring 8 returns to its original state, and drives the limiting frame 7 to rotate and reset, so that the first collection frame 3 and the second collection frame 5 are engaged with the limiting frame 7 through the slots. Then rotate the first connecting ring 4 and the second connecting ring 6 90 degrees to limit the distance between the first collection frame 3 and the second collection frame 5, so as to facilitate the installation and removal of the first collection frame 3 and the second collection frame 5 while ensuring stable installation and preventing accidental detachment. Then place the absorbent cotton in the first collection frame 3 and the second collection frame 5. If the filter 1 leaks, the dialysate will flow onto the absorbent cotton.
[0024] When the limiting frame 7 rotates, the torsion spring 8 deforms, which in turn drives the guide plate 10 to rotate. This causes the slide rod 12 to move along the guide plate 10, moving it downwards on the guide rod 9 and causing the pressing block 11 to move downwards. The telescopic spring 13 is compressed and contracts. When the limiting frame 7 is released, the torsion spring 8 returns to its original state, causing the limiting frame 7 to rotate and reset. This causes the guide plate 10 to rotate, causing the slide rod 12 to move upwards along the guide plate 10 and causing the pressing block 11 to move upwards. This ensures that both the first collecting frame 3 and the second collecting frame 5 are in contact with the pressing block 11, thereby limiting the outer sides of the first collecting frame 3 and the second collecting frame 5 and improving the stability of the installation.
[0025] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A medical dialysis fluid filtration device, characterized in that: The device includes a filter (1), a mounting bracket (2), a first collection frame (3), a first connecting ring (4), a second collection frame (5), a second connecting ring (6), a locking component, and a limiting component. The mounting bracket (2) is connected to the middle of the filter (1). The first collection frame (3) is placed on the right side of the mounting bracket (2). The first connecting ring (4) is rotatably and slidably connected to the lower part of the first collection frame (3). The second collection frame (5) is placed on the left side of the mounting bracket (2). The second connecting ring (6) is rotatably and slidably connected to the lower part of the second collection frame (5). The second connecting ring (6) contacts the first connecting ring (4). The mounting bracket (2) is provided with a locking component that can lock the first collection frame (3) and the second collection frame (5). The mounting bracket (2) is also provided with a limiting component that can limit the outer side of the first collection frame (3) and the second collection frame (5).
2. The medical dialysis fluid filtration device as described in claim 1, characterized in that: The filter (1) has a connecting pipe on its upper side.
3. The medical dialysis fluid filtration device as described in claim 1, characterized in that: Both the first collection box (3) and the second collection box (5) have card slots at the bottom.
4. The medical dialysis fluid filtration device as described in claim 1, characterized in that: The positioning assembly includes a limiting frame (7) and a torsion spring (8). The limiting frame (7) is rotatably connected to the mounting frame (2). The first collection frame (3) and the second collection frame (5) are both engaged with the limiting frame (7) through slots. The torsion spring (8) is connected between the limiting frame (7) and the mounting frame (2).
5. The medical dialysis fluid filtration device as described in claim 1, characterized in that: It also includes a limiting component, which includes a guide rod (9), a guide plate (10), a pressing block (11), a slide rod (12), and a telescopic spring (13). The lower sides of the left and right sides of the mounting frame (2) are connected to the guide rod (9), and the lower sides of the left and right sides of the limiting frame (7) are connected to the guide plate (10). The guide rod (9) is slidably connected to the slide rod (12), and the slide rod (12) is slidably engaged with the adjacent guide plate (10). The upper side of the slide rod (12) is connected to the pressing block (11), and the slide rod (12) is connected to the adjacent guide rod (9) by a telescopic spring (13).
6. The medical dialysis fluid filtration device as described in claim 5, characterized in that: The extrusion block (11) has a micro-arc structure.