A liquid preparation device for hemodialysis
Through the innovative design of the mounting block, slider, locking block and spring, the quick assembly and disassembly of the hemodialysis solution preparation device tank is realized, solving the problems of cleaning difficulties and cross-contamination, and improving the maintenance efficiency and safety of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- PAN SIWEI MEDICAL INSTR (SHANGHAI) CO LTD
- Filing Date
- 2025-04-27
- Publication Date
- 2026-07-24
Smart Images

Figure CN224540679U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of liquid preparation device technology, specifically a liquid preparation device for hemodialysis. Background Technology
[0002] Hemodialysis solution preparation devices play a crucial role in the medical field. They are key equipment for ensuring the safety and effectiveness of hemodialysis treatment. Designed specifically for precise solution preparation, this device significantly reduces errors that may arise from manual operation. It can quickly and accurately prepare standardized dialysis solutions according to the treatment needs of different patients. The device boasts high stability and reliability, maintaining stable performance during long-term operation and ensuring the continuous achievement of dialysis solution quality standards. Furthermore, it incorporates advanced safety mechanisms to effectively avoid various potential risks during solution preparation, safeguarding patient safety. The use of solution preparation devices significantly improves the efficiency and quality of hemodialysis treatment, allowing medical staff to focus more on patient care and disease monitoring, bringing a better treatment experience and hope for recovery to many kidney disease patients. According to the utility model patent with patent authorization announcement number CN220877982U, a solution preparation device for hemodialysis includes a stirring tank. The upper side of the stirring tank is connected to a liquid inlet and a water inlet, and the bottom end of the stirring tank is connected to a liquid outlet. A stirring assembly is installed inside the stirring tank, and a filter assembly is provided on the lower side of the stirring tank. The filter assembly includes a filter screen, a mounting groove, and a disassembly assembly. The mounting groove is formed through one side outer wall of the stirring tank, and a mounting plate is inserted into the mounting groove.
[0003] Currently used hemodialysis solution preparation devices have significant shortcomings in practical operation. The preparation tank uses a one-piece design, with the tank body fixed to the main frame and difficult to separate. This makes it difficult to thoroughly clean the internal residue of disinfectant and dialysate crystals after each use. Due to the inconvenience of disassembly and cleaning, medical staff are often forced to shorten cleaning cycles, allowing residues to easily breed bacteria and form biofilms, posing a risk of cross-contamination. Furthermore, the connection between the preparation tank and the delivery tubing lacks an effective sterile barrier, making the dialysate susceptible to external contamination during transport. These design flaws not only affect the quality of solution preparation but also increase the risk of infection for patients, necessitating improvements to enhance equipment cleaning efficiency and operational safety. Utility Model Content
[0004] The purpose of this invention is to provide a solution preparation device for hemodialysis, which solves the problem that the solution preparation tank is inconvenient to disassemble and clean during use, and that contamination is easy to occur during use.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a solution preparation device for hemodialysis, comprising a fixed plate, a bracket fixedly connected to the lower end of the fixed plate, a barrel slidably connected inside the fixed plate, a lid provided at the upper end of the barrel, an installation block fixedly connected to the outer side of the barrel, the installation block contacting the fixed plate, a slider slidably connected inside the installation block, a locking block fixedly connected to the lower end of the slider, a locking groove provided inside the fixed plate, a fixing rod fixedly connected inside the installation block, the fixing rod slidably connected to the slider, a spring provided on the outer side of the fixing rod, and a fixing mechanism provided on the barrel.
[0006] Preferably, the locking block contacts the mounting block, and the locking block is slidably connected to the locking slot. Through the design of the locking block, the barrel body can be limited.
[0007] Preferably, one end of the spring contacts the slider, and the other end of the spring contacts the mounting block. Through the design of the spring, the locking block can be driven to limit the mounting block.
[0008] Preferably, a push block is fixedly connected to the upper end of the slider, and the push block contacts the mounting block. The design of the push block allows for easy movement of the locking block.
[0009] Preferably, the fixing mechanism includes a mounting base, a fixing tube fixedly connected to the lower end of the barrel, a fixing tube slidably connected to the mounting base, a connecting tube inserted into the outer side of the fixing tube, a limiting block rotatably connected inside the mounting base, the limiting block rotatably connected to the fixing tube, a limiting sleeve fixedly connected to the lower end of the limiting block, a limiting frame fixedly connected to the outer side of the connecting tube, the limiting frame contacting the limiting sleeve, and the limiting frame slidably connected to the mounting base. Through the design of the fixing mechanism, the barrel can be conveniently limited.
[0010] Preferably, a protrusion is fixedly connected to the outer side of the limiting block, and the protrusion is rotatably connected to the mounting base. Through the design of the protrusion, the limiting block can play a limiting role.
[0011] Preferably, the limiting sleeve contacts the mounting base, and the limiting sleeve is connected to the connecting pipe by a thread. The design of the limiting sleeve allows the connecting pipe to be easily separated from the fixed pipe.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model innovatively designs core components such as mounting blocks, sliders, locking blocks, and springs, achieving rapid assembly and disassembly through ingenious linkage. During operation, simply moving the slider will cause the locking block to disengage from the fixed plate, instantly releasing the mechanical restriction on the barrel. This structure allows the barrel to be easily separated from the fixed plate, significantly improving the difficulty of disassembling traditional devices. It not only enhances cleaning convenience but also effectively avoids bacterial growth caused by residual liquid, reducing the risk of cross-contamination during hemodialysis solution preparation from the root.
[0013] 2. This utility model innovatively incorporates key components such as an installation base, a limiting sleeve, and a limiting frame, achieving convenient disassembly through a clever linkage structure. In actual operation, simply rotating the limiting sleeve causes it to spiral with the connecting pipe, causing the limiting sleeve to move downwards and separate from it, thereby detaching the connecting pipe from the fixed pipe. This design significantly simplifies traditional disassembly steps, eliminates cumbersome operations, and makes barrel disassembly faster and more efficient, effectively improving equipment maintenance efficiency. At the same time, it ensures the safety and reliability of the disassembly process, reducing the complexity and potential risks of manual operation. Attached Figure Description
[0014] Figure 1 This is a perspective view of the overall structure of this utility model; Figure 2 For the present utility model Figure 1 A partial three-dimensional structural diagram; Figure 3 For the present utility model Figure 1 A front sectional view; Figure 4 For the present utility model Figure 2 Enlarged view of section A in the diagram; Figure 5 For the present utility model Figure 3 Enlarged view of section B in the diagram.
[0015] In the diagram: 1. Fixing plate; 11. Bracket; 2. Bucket body; 21. Lid; 3. Mounting block; 31. Slider; 32. Locking block; 33. Locking groove; 34. Fixing rod; 35. Spring; 36. Push block; 4. Fixing mechanism; 41. Mounting base; 42. Fixing pipe; 43. Connecting pipe; 44. Limiting block; 45. Protrusion; 46. Limiting sleeve; 47. Limiting frame. Detailed Implementation
[0016] 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.
[0017] Please see Figure 1-5 A solution preparation device for hemodialysis includes a fixed plate 1, a bracket 11 fixedly connected to the lower end of the fixed plate 1, a barrel 2 slidably connected inside the fixed plate 1, a cover 21 provided at the upper end of the barrel 2, an mounting block 3 fixedly connected to the outer side of the barrel 2, the mounting block 3 contacting the fixed plate 1, a slider 31 slidably connected inside the mounting block 3, a locking block 32 fixedly connected to the lower end of the slider 31, a locking groove 33 opened inside the fixed plate 1, the locking block 32 contacting the mounting block 3, and the locking block 32 slidably connected to the locking groove 33. Through the design of the locking block 32, the barrel 2 can be limited.
[0018] Please see Figure 2-5 The mounting block 3 is internally fixedly connected to a fixing rod 34, which is slidably connected to the slider 31. A spring 35 is provided on the outside of the fixing rod 34. One end of the spring 35 contacts the slider 31, and the other end of the spring 35 contacts the mounting block 3. Through the design of the spring 35, the locking block 32 can be driven to limit the mounting block 3. A push block 36 is fixedly connected to the upper end of the slider 31. The push block 36 contacts the mounting block 3. Through the design of the push block 36, the locking block 32 can be easily moved. A fixing mechanism 4 is provided on the barrel 2.
[0019] Please see Figure 2-5 The fixing mechanism 4 includes a mounting base 41. The lower end of the barrel 2 is fixedly connected to the mounting base 41, and a fixing tube 42 is also fixedly connected to the lower end of the barrel 2. The fixing tube 42 is slidably connected to the mounting base 41. A connecting tube 43 is inserted into the outside of the fixing tube 42. A limiting block 44 is rotatably connected inside the mounting base 41. The limiting block 44 is rotatably connected to the fixing tube 42. A protrusion 45 is fixedly connected to the outside of the limiting block 44. The protrusion 45 is rotatably connected to the mounting base 41. Through the design of the protrusion 45, the limiting position can be adjusted. Block 44 serves as a limiter. The lower end of the limiter block 44 is fixedly connected to the limiter sleeve 46, which contacts the mounting base 41. The limiter sleeve 46 is threadedly connected to the connecting pipe 43. The design of the limiter sleeve 46 allows the connecting pipe 43 to be easily separated from the fixed pipe 42. The outer side of the connecting pipe 43 is fixedly connected to the limiter frame 47, which contacts the limiter sleeve 46. The limiter frame 47 is slidably connected to the mounting base 41. The design of the fixing mechanism 4 allows the barrel 2 to be easily limited.
[0020] The specific implementation process of this utility model is as follows: When in use, by moving the two push blocks 36 toward each other, the push blocks 36 drive the slider 31 to move on the fixed rod 34, the slider 31 squeezes the spring 35, and the slider 31 drives the locking block 32 to slide in the slot 33, so that the locking block 32 is no longer locked with the fixed plate 1, and the limitation on the barrel 2 can be released. By rotating the limiting sleeve 46, the limiting sleeve 46 and the connecting pipe 43 will undergo threaded movement, causing the connecting pipe 43 to slide out of the limiting sleeve 46, thus separating the connecting pipe 43 from the fixed pipe 42. This allows the barrel 2 to be removed from the fixed plate 1, facilitating the disassembly and cleaning of the barrel 2.
[0021] 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 solution preparation device for hemodialysis, comprising a fixing plate (1), characterized in that: The lower end of the fixed plate (1) is fixedly connected to a bracket (11). The inside of the fixed plate (1) is slidably connected to a barrel (2). The upper end of the barrel (2) is provided with a lid (21). The outside of the barrel (2) is fixedly connected to an installation block (3). The installation block (3) is in contact with the fixed plate (1). The inside of the installation block (3) is slidably connected to a slider (31). The lower end of the slider (31) is fixedly connected to a locking block (32). The inside of the fixed plate (1) is provided with a locking groove (33). The inside of the installation block (3) is fixedly connected to a fixing rod (34). The fixing rod (34) is slidably connected to the slider (31). The outside of the fixing rod (34) is provided with a spring (35). The barrel (2) is provided with a fixing mechanism (4).
2. The solution preparation device for hemodialysis according to claim 1, characterized in that: The card block (32) contacts the mounting block (3), and the card block (32) is slidably connected to the card slot (33).
3. The solution preparation device for hemodialysis according to claim 1, characterized in that: One end of the spring (35) is in contact with the slider (31), and the other end of the spring (35) is in contact with the mounting block (3).
4. A solution preparation device for hemodialysis according to claim 1, characterized in that: The upper end of the slider (31) is fixedly connected to a push block (36), which is in contact with the mounting block (3).
5. A solution preparation device for hemodialysis according to claim 1, characterized in that: The fixing mechanism (4) includes a mounting base (41). The lower end of the barrel (2) is fixedly connected to the mounting base (41). The lower end of the barrel (2) is fixedly connected to the fixing tube (42). The fixing tube (42) is slidably connected to the mounting base (41). A connecting tube (43) is inserted into the outside of the fixing tube (42). A limiting block (44) is rotatably connected inside the mounting base (41). The limiting block (44) is rotatably connected to the fixing tube (42). A limiting sleeve (46) is fixedly connected to the lower end of the limiting block (44). A limiting frame (47) is fixedly connected to the outside of the connecting tube (43). The limiting frame (47) contacts the limiting sleeve (46). The limiting frame (47) is slidably connected to the mounting base (41).
6. A solution preparation device for hemodialysis according to claim 5, characterized in that: The outer side of the limiting block (44) is fixedly connected to a protrusion (45), and the protrusion (45) is rotatably connected to the mounting base (41).
7. A solution preparation device for hemodialysis according to claim 5, characterized in that: The limiting sleeve (46) contacts the mounting base (41), and the limiting sleeve (46) is connected to the connecting pipe (43) by threads.