Hemodialysis line holder
By designing a hemodialysis tubing fixator that combines springs and locking blocks, the problems of loose connectors and operational difficulties in existing technologies have been solved, achieving stable tubing fixation and improving dialysis efficiency and ease of use.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 李丹
- Filing Date
- 2025-04-18
- Publication Date
- 2026-07-24
AI Technical Summary
Existing hemodialysis tubing fixation devices are prone to loosening of the connectors due to patient movement or friction from clothing, affecting the fixation effect. Furthermore, overly tight connections increase the difficulty of operation for medical staff and reduce dialysis efficiency.
A hemodialysis tubing fixator was designed, comprising a base and snap-fit components. Utilizing the cooperation of springs and snap-fit blocks, and through the design of a detachable connecting plate and straps, a stable tubing fixation is achieved, reducing the risk of loosening. The fixation position can be easily adjusted using Velcro.
It effectively prevents needle dislodgement, improves dialysis efficiency, reduces operation time, adapts to different patient body types and dialysis sites, and enhances the versatility and ease of use of the fixator.
Smart Images

Figure CN224540767U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hemodialysis auxiliary accessories technology, specifically a hemodialysis tubing fixator. Background Technology
[0002] Hemodialysis is one of the renal replacement therapies for patients with acute and chronic renal failure. It involves draining blood from the body and passing it through a dialyzer composed of numerous hollow fibers. The blood exchanges substances with an electrolyte solution (dialysis fluid) containing a concentration similar to that in the body through diffusion and convection within and outside the hollow fibers. This process removes metabolic waste products, maintains electrolyte and acid-base balance, and removes excess water. The purified blood is then returned to the body.
[0003] Chinese utility model patent application number 202420190811.1 provides a hemodialysis tubing fixation device. In use, the base is fixed to the patient's upper garment, and then the connector is snapped into the base. The inflow tubing of the dialysis tubing is fixed to one clip, and the outflow tubing is fixed to another clip. There is a certain distance between the fixed position of the clips and the needle at the patient's puncture point. At this time, the tubing between the clips and the patient's puncture point is fixed relative to the patient's arm. When the patient's arm moves, the needle will not be directly driven by the tubing, thus making it less likely for the needle to fall off the patient's arm.
[0004] However, during the use of the above-mentioned equipment, it was found that the snap-fit method is prone to loosening of the connector due to patient movement, clothing friction, etc., which will cause the entire tubing fixation system to fail and fail to prevent the needle from falling off. However, if the snap-fit is too tight, it will make it difficult for medical staff to install and remove the connector, increase the operation time, affect the dialysis efficiency, and may even cause unnecessary pulling and discomfort to the patient during the operation. Utility Model Content
[0005] To address the shortcomings of existing technologies, this utility model provides a hemodialysis tubing fixator, which solves the problems mentioned in the background technology, such as the connection method being prone to loosening of the connector due to patient movement, clothing friction, etc., which would cause the entire tubing fixation system to fail. If the connection is too tight, it will make it difficult for medical staff to install and remove the connector, increase the operation time, and affect the dialysis efficiency.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a hemodialysis tubing fixator, comprising a base and a snap-fit component. A hemodialysis tubing is installed in the annular snap-fit at the top of the snap-fit component. One end of the snap-fit component has a connecting groove, and one side of the connecting groove is connected to a slot. One end of the base has two symmetrical moving grooves, and symmetrical moving frames are provided in the two moving grooves of the base. The moving frames are respectively fixedly installed on corresponding sliding rods. One side of the moving frame is connected to a spring, and the spring is connected to the inner wall of the moving groove through a limiting plate. One end of the moving frame is fixedly installed with a connecting frame, and the moving frame is connected to a snap-fit block through the connecting frame. The connecting frame and the snap-fit block form an L-shape, and the snap-fit block is correspondingly adapted to the slot.
[0007] Preferably, the base is composed of an upper connecting plate and a lower connecting plate, which are detachably connected, and the snap-fit component is snapped into the connecting cavity formed by the combination of the upper and lower connecting plates.
[0008] Preferably, a second through groove is provided at one end of the lower connecting plate, and a second sliding groove is provided on the second through groove.
[0009] Preferably, the upper connecting plate is C-shaped, and a first through groove is provided at one end of the upper connecting plate, and a first sliding groove is provided on the first through groove.
[0010] Preferably, the first through groove corresponds to the second through groove, and the first through groove and the second through groove combine to form an installation groove. The slide rod is adapted to the installation groove, and the first slide groove corresponds to the second slide groove. The first slide groove and the second slide groove combine to form a moving groove.
[0011] Preferably, mounting brackets are fixedly installed at both ends of the bottom of the lower connecting plate, and straps are connected to the mounting brackets. The straps are made of nylon, and Velcro is sewn onto the straps at both ends of the lower connecting plate.
[0012] This utility model provides a hemodialysis tubing fixator. It has the following beneficial effects: (1) When the plug-in component needs to be installed, the spring can assist the locking block to enter the slot. By connecting the locking block and the slot, the possibility of the plug-in component becoming loose is reduced. When disassembling, the sliding rod controls the movement of the moving frame, which makes it easy to remove the locking block from the slot, thus making it easier to disassemble the plug-in component.
[0013] (2) The mounting bracket at the bottom of the lower connecting plate of this utility model is connected with a nylon strap, and the strap has Velcro, which allows the fixator to be flexibly fixed to different parts of the patient's body, such as the arm, and can be adjusted according to the patient's actual situation and needs. At the same time, the Velcro design facilitates quick fixing and disassembly, making it convenient to use. Attached Figure Description
[0014] Figure 1 This is a diagram showing the overall structure of this utility model; Figure 2 This is another perspective view of the overall structure of this utility model; Figure 3 This utility model Figure 2 Structural diagram of the middle connector; Figure 4 This utility model Figure 2 Structural diagram of the central base; Figure 5 This utility model Figure 4 Structural diagram of the lower middle connecting plate; Figure 6 This utility model Figure 4 Structural diagram of the upper and middle connecting plates.
[0015] In the diagram, 1 is the base; 11 is the upper connecting plate; 111 is the first sliding groove; 112 is the first through groove; 12 is the lower connecting plate; 121 is the mounting bracket; 122 is the second through groove; and 123 is the second sliding groove. 2. Snap-fit component; 21. Ring buckle; 22. Connecting groove; 23. Slot; 3. Hemodialysis tubing; 4. Straps; 5. Velcro; 6. Spring; 61. Limiting plate; 62. Moving frame; 63. Connecting frame; 64. Locking block; 65. Slide rod. Detailed Implementation
[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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] Example 1: Please see Figures 1-6This utility model provides a hemodialysis tubing fixation device, including a base 1 and a snap-fit component 2. A hemodialysis tubing 3 is installed in the annular buckle 21 at the top of the snap-fit component 2. A connecting groove 22 is opened at one end of the snap-fit component 2, and a snap-fit groove 23 is connected to one side of the connecting groove 22. Two symmetrical moving grooves are opened at one end of the base 1. Symmetrical moving frames 62 are set in the two moving grooves of the base 1. The moving frames 62 are respectively fixedly installed on corresponding sliding rods 65. A spring 6 is connected to one side of the moving frame 62. The spring 6 is connected to the inner wall of the moving groove through a limiting plate 61. A connecting frame 63 is fixedly installed at one end of the moving frame 62. The moving frame 62 is connected to the snap-fit block 64 through the connecting frame 63. The connecting frame 63 and the snap-fit block 64 form an L-shape. The snap-fit block 64 is correspondingly adapted to the snap-fit groove 23. The base 1 is composed of an upper connecting plate 11 and a lower connecting plate 12. The upper connecting plate 11 and the lower connecting plate 12 are detachably connected, and the snap-fit 2 is snapped into the connecting cavity formed by the combination of the upper connecting plate 11 and the lower connecting plate 12. A second through groove 122 is provided at one end of the lower connecting plate 12, and a second sliding groove 123 is provided on the second through groove 122; The upper connecting plate 11 is C-shaped, and a first through groove 112 is provided at one end of the upper connecting plate 11. A first sliding groove 111 is provided on the first through groove 112. The first through groove 112 corresponds to the second through groove 122. The first through groove 112 and the second through groove 122 are combined to form an installation groove. The slide rod 65 is adapted to the installation groove. The first slide groove 111 corresponds to the second slide groove 123. The first slide groove 111 and the second slide groove 123 are combined to form a moving groove.
[0018] Specifically, the upper connecting plate 11 and the lower connecting plate 12 are detachably connected by bolts. The upper connecting plate 11 is C-shaped, and the first through groove 112 at one end of the upper connecting plate 11 corresponds to the second through groove 122 at one end of the lower connecting plate 12, which together form an installation groove for installing the slide rod 65. At the same time, the first sliding groove 111 and the second sliding groove 123 correspond to each other, which together form a moving groove to provide a track for the sliding of the moving frame 62. Insert the snap-fit 2 into the connecting cavity formed by the combination of the upper connecting plate 11 and the lower connecting plate 12. The user squeezes the slide rod 65, which pushes the moving frame 62 to compress the spring 6, thereby making the snap-fit block 64 correspond to the connecting groove 22. Push the snap-fit 2 to make the snap-fit block 64 enter the connecting groove 22. Then release the slide rod 65, so that under the action of the spring 6, the snap-fit block 64 is snapped into the slot 23, realizing the fixed connection between the snap-fit 2 and the base 1. The upper connecting plate 11 and the lower connecting plate 12 are detachably connected and can be completely disassembled, which makes it convenient for medical staff to thoroughly clean the internal space such as the connecting cavity, avoiding dirt residue and bacterial growth. At the same time, the detachable connection method allows maintenance personnel to easily access the internal moving frame 62, spring 6 and other components, which facilitates the inspection and replacement of damaged parts, extends the service life of the fixator and reduces the cost of use. Through the cooperation of spring 6 and locking block 64, when locking block 64 is inserted into locking slot 23, spring 6 provides a continuous elastic force, keeping locking block 64 firmly locked in locking slot 23. This better resists external forces such as patient movement and clothing friction, effectively preventing the locking component 2 from loosening, thus ensuring the effectiveness of the entire tubing fixation system and better preventing needle dislodgement. At the same time, it avoids increasing operation time due to overly tight locking, improving dialysis efficiency and reducing unnecessary pulling and discomfort to the patient during operation.
[0019] Furthermore, for flexible adjustment of the retainer's position, please refer to [link / reference needed]. Figures 1-6 The bottom ends of the lower connecting plate 12 are fixedly installed with mounting brackets 121. The mounting brackets 121 are connected with straps 4, which are made of nylon. Velcro 5 is sewn onto the straps 4 at both ends of the lower connecting plate 12.
[0020] Specifically, the strap 4 is connected to the mounting bracket 121. Since the strap 4 is made of nylon and has Velcro 5 sewn at both ends, during use, the base 1 can be placed on the area where the hemodialysis tubing needs to be secured. Then, according to the actual position requirements, the strap 4 is stretched to wrap around the limb or other fixation points. Finally, the Velcro 5 at both ends of the strap 4 is fastened together. By adjusting the position of the Velcro 5, the position of the fixator on the limb can be flexibly adjusted to suit the needs of different patients and different dialysis sites. Meanwhile, the adjustable strap 4 allows the fixation device to be suitable for patients of all body types, whether they are children or adults, obese or thin, so that they can find a suitable fixation position, thus improving the versatility and applicability of the fixation device.
[0021] Working principle: Place the base 1 on the part where the hemodialysis tubing needs to be fixed (such as the patient's limb), stretch the nylon straps 4 connected to the mounting brackets 121 at both ends of the bottom of the lower connecting plate 12 so that they pass around the limb or other fixed parts, and then fasten the Velcro 5 at both ends of the straps 4 together. By adjusting the position of the Velcro 5, fix the base 1 in the appropriate position, and install the hemodialysis tubing 3 in the annular buckle 21 at the top of the snap fastener 2 to complete the initial fixation of the hemodialysis tubing; Insert the snap-fit 2 into the connecting cavity formed by the upper connecting plate 11 and the lower connecting plate 12. Next, the user squeezes the slide rod 65, which pushes the moving frame 62. The moving frame 62 compresses the spring 6, causing the snap-fit block 64 to align with the connecting groove 22. Then, push the snap-fit 2 to allow the snap-fit block 64 to enter the connecting groove 22. Release the slide rod 65, and under the elastic force of the spring 6, the snap-fit block 64 engages with the snap-fit groove 23, achieving a fixed connection between the snap-fit 2 and the base 1, thereby stably fixing the hemodialysis tubing to the corresponding part of the patient. After dialysis, squeeze the slide bar 65 to make the moving frame 62 overcome the elastic force of the spring 6, and pull the locking block 64 out of the locking groove 23 to align it with the connecting groove 22. Then, pull the locking piece 2 out of the connecting cavity to complete the separation of the locking piece 2 from the base 1. Finally, unfasten the Velcro 5 on the strap 4, remove the base 1, and complete the disassembly of the entire fixation device.
[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0023] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A hemodialysis tubing fixation device, comprising a base (1) and a snap-fit component (2), wherein a hemodialysis tubing (3) is installed in an annular snap (21) at the top of the snap-fit component (2), characterized in that: One end of the snap-fit component (2) is provided with a connecting groove (22), and one side of the connecting groove (22) is connected to a slot (23). One end of the base (1) is provided with two symmetrical moving grooves. The two moving grooves of the base (1) are provided with mutually symmetrical moving frames (62). The moving frames (62) are respectively fixedly installed on corresponding slide rods (65). One side of the moving frame (62) is connected to a spring (6). The spring (6) is connected to the inner wall of the moving groove through a limiting plate (61). One end of the moving frame (62) is fixedly installed with a connecting frame (63). The moving frame (62) is connected to the card block (64) through the connecting frame (63). The connecting frame (63) and the card block (64) form an L-shape. The card block (64) is correspondingly adapted to the slot (23).
2. The hemodialysis tubing fixator according to claim 1, characterized in that: The base (1) is composed of an upper connecting plate (11) and a lower connecting plate (12). The upper connecting plate (11) and the lower connecting plate (12) are detachably connected. The snap-fit member (2) is snapped into the connecting cavity formed by the combination of the upper connecting plate (11) and the lower connecting plate (12).
3. The hemodialysis tubing fixator according to claim 2, characterized in that: The lower connecting plate (12) has a second through groove (122) at one end, and a second sliding groove (123) is provided on the second through groove (122).
4. The hemodialysis tubing fixator according to claim 3, characterized in that: The upper connecting plate (11) is C-shaped, and a first through groove (112) is provided at one end of the upper connecting plate (11), and a first sliding groove (111) is provided on the first through groove (112).
5. The hemodialysis tubing fixator according to claim 4, characterized in that: The first through groove (112) corresponds to the second through groove (122), and the first through groove (112) and the second through groove (122) are combined to form an installation groove. The slide rod (65) is adapted to the installation groove. The first slide groove (111) corresponds to the second slide groove (123), and the first slide groove (111) and the second slide groove (123) are combined to form a moving groove.
6. The hemodialysis tubing fixator according to claim 2, characterized in that: The bottom ends of the lower connecting plate (12) are fixedly installed with mounting brackets (121), and the mounting brackets (121) are connected with straps (4). The straps (4) are made of nylon, and Velcro (5) is sewn onto the straps (4) at both ends of the lower connecting plate (12).