Anti-slip fixer for hemodialysis puncture needle

Abstract

The utility model belongs to the field of puncture needle fixing devices, and particularly relates to an anti-slip fixator for a hemodialysis puncture needle. The device comprises a box body with a downward box opening, a partition plate is vertically fixed in the box body, two first pressing blocks aligned at intervals are fixed in a mounting bin, a second pressing block is fixed in the mounting bin, openings are formed in the side wall of the box body and the partition plate, clamping grooves are formed in the bottom of the second pressing block, and pull strips are fixed to the first pressing blocks and the second pressing block. Three through grooves are formed in the partition plate, mounting plates are horizontally fixed to the two side walls, not provided with the openings, of the box body, and a first self-adhesive film is fixed to each mounting plate. After the puncture needle is punctured into a blood vessel, the box body covers the puncture needle, the two first pressing blocks and the second pressing block extrude and fix the two needle wings and the needle handle respectively, the puncture needle is prevented from moving, the box body is fixed through the two first self-adhesive films, the operation difficulty is not high, and the operation is convenient. And the puncture needle can be more simply, quickly, effectively and firmly fixed.

Description

Technical Field

[0001] This utility model belongs to the field of puncture needle fixation devices, and in particular relates to a hemodialysis puncture needle anti-slip fixation device. Background Technology

[0002] Hemodialysis (HD) is one of the renal replacement therapies for patients with acute and chronic renal failure. It involves drawing blood from the body through dialysis tubing and passing it through a dialyzer (purification device) composed of multiple hollow fibers. The blood exchanges substances with a dialysate solution (dialysis fluid) containing electrolytes at similar concentrations to the body's own through diffusion, ultrafiltration, adsorption, and convection within and outside the hollow fibers. This process removes metabolic waste products, maintains water, electrolyte, and acid-base balance, and removes excess water. The purified blood is then returned to the patient. Each treatment session takes approximately four hours and is performed using extracorporeal circulation.

[0003] In hemodialysis, the use of the puncture needle is a crucial step, directly affecting the establishment of vascular access and the smooth progress of hemodialysis. After a successful puncture, the puncture needle needs to be properly secured to prevent it from falling out or moving, thus ensuring the smooth progress of hemodialysis. Currently, in clinical practice, medical tape is mostly used to secure the puncture needle and its fins. The most common fixation method is: the first tape secures the fins, the second tape passes under the needle handle and secures the fins in an upward V-shape, and the third tape secures the wound dressing and the second tape, arranging the puncture needle tubing neatly. The U-shaped bandage is secured with the fourth strip of adhesive tape, which is then applied horizontally to the end of the V-shaped bandage. This method effectively secures the puncture needle and prevents it from slipping. However, the existing fixation method is rather cumbersome and complex, requiring considerable experience to complete. It is difficult for less experienced nurses, and improper operation can easily lead to insecure tape fixation, causing the puncture needle to slip out. This can result in bleeding, wound infection, decreased hemoglobin, worsening anemia, fistula occlusion, and coagulation disorders, all of which can endanger the patient's life. Utility Model Content

[0004] The purpose of this invention is to provide a hemodialysis puncture needle anti-slip fixation device that makes fixing the puncture needle simpler and more convenient.

[0005] The aforementioned anti-slip fixation device for hemodialysis puncture needles includes a box body with the opening facing downwards. A partition is vertically fixed inside the box body, dividing its internal space into an installation compartment and a disassembly compartment. Two first pressure blocks aligned at intervals are detachably fixed inside the installation compartment. A second pressure block located between the two first pressure blocks is also detachably fixed inside the installation compartment. Openings for the needle handle to pass through are provided on the side walls of the box body and the partition. A slot for engaging the needle handle is provided at the bottom of the second pressure block. Pull strips are fixed on all the first and second pressure blocks. Three through slots for the pull strips to pass through are provided on the partition. Mounting plates are horizontally fixed on the two side walls of the box body without openings. A first self-adhesive film is detachably fixed on each mounting plate.

[0006] Furthermore, the bottom of the installation chamber has two first installation slots, and the upper parts of the two first pressing blocks are respectively engaged in the two first installation slots. The bottom of the installation chamber has a second installation slot, and the upper part of the second pressing block is engaged in the second installation slot. Positioning slots are provided on the front and rear side walls of all the first and second installation slots, and locking blocks for engaging in the corresponding positioning slots are fixed on the front and rear side walls of all the first and second pressing blocks.

[0007] Furthermore, two positioning rods are vertically fixed to the top of all mounting plates. Each first self-adhesive film has two through holes for the two positioning rods on the corresponding mounting plates to pass through. Each positioning rod is independently fitted with a sleeve to block the first self-adhesive film. The upper end of each positioning rod is spherical.

[0008] Furthermore, a second self-adhesive film is attached to one of the first self-adhesive films, and a dressing core is fixed to the side of the second self-adhesive film facing the patient's skin.

[0009] Furthermore, the second pressure block and all the first pressure blocks are made of an elastic material.

[0010] Furthermore, anti-slip textures are provided on the bottom of all the first pressing blocks and on the groove walls of the slots.

[0011] Furthermore, the slot has an arc-shaped structure.

[0012] Furthermore, the box is made of a transparent material.

[0013] Furthermore, the top of the box is provided with markings to indicate the fixed positions of the needle handle and needle wings.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] Two first pressure blocks, a second pressure block, and two first self-adhesive films are pre-installed on the box body. After the puncture needle is inserted into the blood vessel, the box body is placed over the puncture needle, allowing the two first and second pressure blocks to press and fix the two needle wings and the needle handle respectively, preventing the puncture needle from moving. The two first self-adhesive films are then used to fix the box body in place. The operation is not difficult, allowing medical staff to easily and quickly fix the puncture needle effectively and securely. The end of the pull strip is located in the disassembly compartment, making it easy for medical staff to pull the pull strip to remove the first or second pressure block for easy replacement. After cleaning and disinfecting the box body, the first and second pressure blocks and the first self-adhesive films can be replaced, allowing it to be reused, thus reducing treatment costs for patients and avoiding resource waste. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a bottom view of the present invention;

[0018] Figure 3 for Figure 1 Sectional view at point AA;

[0019] Figure 4 This is a perspective view of the present utility model;

[0020] Figure 5 This is a bottom-view perspective view of the present invention;

[0021] Figure 6 This is an exploded view of the present invention;

[0022] The components in the diagram are named as follows: 1. Box body; 2. First pressing block; 3. Second pressing block; 4. Positioning rod; 5. Sleeve; 6. First self-adhesive film; 7. Mounting plate; 8. Partition; 9. Pull strip; 10. Second self-adhesive film; 11. Core; 12. Locking block. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0024] Example 1

[0025] This embodiment describes a hemodialysis puncture needle anti-slip fixation device, such as... Figure 1 , Figure 2 and Figure 6 As shown, the box includes a rectangular box with the opening facing downwards, which fits snugly against human skin. The box is made of medical-grade transparent materials such as PP, PE, PC, and PEEK.

[0026] The box 1 is vertically fixed with a partition 8 that divides its internal space into an installation compartment and a disassembly compartment. The partition 8 is located in the rear half of the box 1, with the installation compartment located on the front side and the disassembly compartment located on the rear side.

[0027] The installation chamber contains two detachably fixed, spaced-apart first pressure blocks 2. A second pressure block 3 is also detachably fixed between the two first pressure blocks 2. The bottom of the installation chamber has two first mounting slots, and the upper parts of the two first pressure blocks 2 respectively engage in these slots. The bottom of the installation chamber also has a second mounting slot, and the upper part of the second pressure block 3 engages in this slot. The second pressure block 3 and all the first pressure blocks 2 are made of elastic materials such as medical rubber, medical latex, and medical silicone. All the first pressure blocks 2 are interference-fitted with their corresponding first mounting slots. The second pressure block 3 and its corresponding first mounting slot are also interference-fitted. The second mounting slots are designed with an interference fit, ensuring that all first pressure blocks 2 and second pressure blocks 3 are not easily dislodged from their corresponding slots after installation and can be positioned. Positioning slots are provided on the front and rear side walls of all first and second mounting slots, and locking blocks 12 are fixed on the front and rear side walls of all first pressure blocks 2 and second pressure blocks 3 for engaging in the corresponding positioning slots. When all first pressure blocks 2 and second pressure blocks 3 are engaged in their corresponding mounting slots, all locking blocks 12 will engage in the aligned positioning slots, thereby providing secondary fixation for all first pressure blocks 2 and second pressure blocks 3 and preventing them from easily dislodging from their corresponding slots.

[0028] The side wall of the box 1 and the partition 8 have openings for the needle handle to pass through. In this embodiment, for example... Figure 1 and Figure 2 As shown, the openings are mounted on the front and rear side walls of box 1, and the three openings are aligned along the axis.

[0029] The bottom of the second pressure block 3 has a slot for engaging the needle handle, such as... Figure 2 and Figure 5 As shown, the slot is aligned with the three openings on the axis. The slot has an arc-shaped structure. When the needle handle of the puncture needle is located in the slot, the first pressure block 2 can press and fix the needle handle. The slot can position the needle handle of the puncture needle. The arc-shaped slot can fix needle handles of different diameters in the middle. The first pressure blocks 2 on both sides of the second pressure block 3 press and fix the two needle wings on the puncture needle respectively, thereby preventing the puncture needle from moving out.

[0030] The top of box 1 has markings to indicate the fixing positions of the needle shank and needle wings, such as... Figure 4 and Figure 6As shown, the markings are made according to the two first pressure blocks 2 and the second pressure block 3, which can effectively indicate the position of the needle handle and the needle wings of the puncture needle, allowing medical staff to roughly confirm the position of the needle handle and the needle wings by means of the markings when using it; and the box 1 is made of transparent material, so that the position of the needle handle and the needle wings can be observed through the box 1, which can improve the accuracy of fixing the position of the needle handle and the needle wings.

[0031] All the bottoms of the first pressure blocks 2 and the groove walls of the slots are provided with anti-slip textures. The anti-slip textures can engage with the textures on the needle wings, thereby increasing the friction between the first pressure blocks 2 and the needle wings and improving the fixing effect of the first pressure blocks 2 on the needle wings. The anti-slip textures on the groove walls can engage with the gaps or textures on the needle handle, thereby increasing the friction between the second pressure blocks 3 and the needle handle and improving the fixing effect of the second pressure blocks 3 on the needle handle.

[0032] All first pressure blocks 2 and second pressure blocks 3 are fixed with pull strips 9, which are located on the rear side walls of the first pressure blocks 2 and the second pressure blocks 3 respectively;

[0033] The partition 8 has three through slots for the pull bar 9 to pass through, such as Figure 2 , Figure 3 and Figure 5 As shown, in this embodiment, the partition 8 has the same number of through slots as the pull strips; when installing the first pressure block 2 or the second pressure block 3, the pull strips 9 on it are placed into the through slots from bottom to top, so that the end of the pull strip 9 is located in the disassembly chamber. This makes it convenient for medical staff to pull the pull strip 9 from the disassembly chamber to remove the first pressure block 2 or the second pressure block 3 when replacing the first pressure block 2 or the second pressure block 3. The disassembly chamber can also protect the pull strip 9 to prevent it from being accidentally pulled by the outside, so as to ensure the effectiveness of the first pressure block 2 or the second pressure block 3 in use.

[0034] Mounting plates 7 are horizontally fixed on the two side walls of the box body 1 without openings. In this embodiment, as shown... Figure 1 As shown, the two mounting plates 7 are located on the left and right side walls of the box body 1 respectively, and the bottom of the two mounting plates 7 is flush with the bottom of the box body 1, so that the two mounting plates 7 can fully fit the patient's skin, thus making the box body 1 more stable when it is attached to the patient's skin.

[0035] Each mounting plate 7 is detachably fixed with a first self-adhesive film 6; the first self-adhesive film 6 is a commonly used medical adhesive film, typically made of medical-grade materials such as polyurethane, transparent polyethylene (PE) film, polyacrylamide, and polyacrylonitrile fiber. Depending on the application, it is adhered to the patient's skin using medical pressure-sensitive adhesive, acrylic adhesive, or natural rubber adhesive; for example... Figure 1 , Figure 4 and Figure 6As shown, two positioning rods 4 are vertically fixed to the top of each mounting plate 7. The two positioning rods 4 on the top of each mounting plate 7 are aligned with a front-to-back gap, and the upper end of each positioning rod 4 is spherical. Each first self-adhesive film 6 has two through holes for the two positioning rods 4 on the corresponding mounting plate 7 to pass through. After the positioning rods 4 pass through the through holes, they can position the first self-adhesive film 6, allowing each first self-adhesive film 6 to connect with the corresponding mounting plate 7. Each positioning rod 4 is independently fitted with a retaining sleeve 5 to block the first self-adhesive film 6. The retaining sleeve 5 and the spherical part on the positioning rod 4 are interference-fitted, which allows the positioning rod 4 to be fitted onto the positioning rod. After the positioning rod 4 is in place, the ball can block the retaining sleeve 5, which in turn blocks the first self-adhesive film 6, preventing it from detaching from the positioning rod 4 and keeping it connected to the corresponding mounting plate 7. This allows the mounting plate 7 to effectively fix the box 1 to the patient's skin. After all the used first pressure blocks 2, second pressure blocks 3, and first self-adhesive films 6 are removed, the box 1 can be cleaned and disinfected to eliminate stains and bacteria. After installing new first pressure blocks 2, second pressure blocks 3, and first self-adhesive films 6, it can be reused, reducing the patient's treatment costs and avoiding resource waste.

[0036] A second self-adhesive film 10 is attached to one of the first self-adhesive films 6, and a dressing core 11 is fixed to the side of the second self-adhesive film 10 facing the patient's skin; Figure 2 , Figure 4 and Figure 6 As shown, in this embodiment, a second self-adhesive film 10 is connected to the first self-adhesive film 6 on the left side. The second self-adhesive film 10 is located between the two first self-adhesive films 6. The dressing core 11 at the bottom of the second self-adhesive film 10 is made of medical mesh and needle-punched cotton, and is manufactured in the same way as the dressing core on a band-aid. In use, the dressing core 11 is applied to the needle hole on the skin during dialysis and then fixed by the second self-adhesive film 10. The dressing core 11 can absorb blood and other bodily fluids seeping from the needle hole wound, thereby keeping the wound dry and clean and reducing the risk of infection. Antibiotics, anti-inflammatory drugs and other drug components can be added to the cotton of the dressing core 11. These drugs can play a role in sterilization, anti-inflammation and analgesia. When the second self-adhesive film 10 is not needed, it can be bent towards the first self-adhesive film 6 connected to it, thereby avoiding obstructing the view of the puncture needle.

[0037] In actual use, before puncture, two first pressure blocks 2, a second pressure block 3, and two first self-adhesive films 6 are installed on the box body 1. After puncture, the box body 1 is moved above the needle handle so that the two first pressure blocks 2 are aligned with the two needle wings and the second pressure block 3 is aligned with the needle handle. The box body 1 is then pressed down so that the two first pressure blocks 2 compress and fix the two needle wings respectively, and the second pressure block 3 compresses and fixes the needle handle, thus preventing the puncture needle from moving out. Finally, the two first self-adhesive films 6 are pasted on the patient's skin to fix the box body 1. The dressing 11 is then applied to the puncture site on the skin and fixed with the second self-adhesive film 10. The dressing 11 can absorb blood and other bodily fluids seeping from the puncture wound, thereby keeping the wound dry and clean and reducing the risk of infection. The operation is not difficult, allowing medical staff to more easily and quickly fix the puncture needle effectively and firmly.

Claims

1. A hemodialysis puncture needle anti-slip fixation device, comprising a box body (1) with the opening facing downwards, characterized in that: The box (1) is vertically fixed with a partition (8) that divides its internal space into an installation compartment and a disassembly compartment. The installation compartment is detachably fixed with two first pressure blocks (2) aligned at intervals. The installation compartment is also detachably fixed with a second pressure block (3) located between the two first pressure blocks (2). The side walls of the box (1) and the partition (8) are provided with openings for the needle handle to pass through. The bottom of the second pressure block (3) is provided with a slot for engaging the needle handle. All the first pressure blocks (2) and the second pressure blocks (3) are fixed with pull strips (9). The partition (8) is provided with three through slots for the pull strips (9) to pass through. The two side walls of the box (1) without openings are horizontally fixed with mounting plates (7). Each mounting plate (7) is detachably fixed with a first self-adhesive film (6).

2. The anti-slip fixation device for hemodialysis puncture needles according to claim 1, characterized in that: The bottom of the installation chamber has two first installation slots, and the upper parts of the two first pressure blocks (2) are respectively engaged in the two first installation slots. The bottom of the installation chamber has a second installation slot, and the upper part of the second pressure block (3) is engaged in the second installation slot. Positioning slots are provided on the front and rear side walls of all the first installation slots and the second installation slots. All the first pressure blocks (2) and the second pressure blocks (3) have fixed locking blocks (12) on their front and rear side walls for engaging in the corresponding positioning slots.

3. The anti-slip fixation device for hemodialysis puncture needles according to claim 1, characterized in that: Two positioning rods (4) are vertically fixed on the top of each mounting plate (7). Each first self-adhesive film (6) has two through holes for the two positioning rods (4) on the corresponding mounting plate (7) to pass through. Each positioning rod (4) is independently fitted with a sleeve (5) to block the first self-adhesive film (6). The upper end of each positioning rod (4) is spherical.

4. The anti-slip fixation device for hemodialysis puncture needles according to claim 1, characterized in that: A second self-adhesive film (10) is attached to one of the first self-adhesive films (6), and a dressing core (11) is fixed on the side of the second self-adhesive film (10) facing the patient's skin.

5. The anti-slip fixation device for hemodialysis puncture needles according to claim 1, characterized in that: The second pressure block (3) and all the first pressure blocks (2) are made of elastic material.

6. The anti-slip fixation device for hemodialysis puncture needles according to claim 1, characterized in that: Anti-slip textures are provided on the bottom of all first pressure blocks (2) and on the groove walls of the slots.

7. The anti-slip fixation device for hemodialysis puncture needles according to claim 6, characterized in that: The slot has an arc-shaped structure.

8. The anti-slip fixation device for hemodialysis puncture needles according to claim 1, characterized in that: The box (1) is made of transparent material.

9. The anti-slip fixation device for hemodialysis puncture needles according to claim 8, characterized in that: The top of the box (1) is marked with lines to indicate the fixed positions of the needle handle and needle wings.

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