An internal fistula needle fixing device with convenient adjustment

Abstract

The utility model discloses an inner fistula needle fixing device convenient to adjust, which comprises a fixing band, a first adhesive layer arranged on the lower surface of the fixing band, a lower surface of the first adhesive layer being provided with a protective film, a silica gel pad connected to the first adhesive layer through magic tape, and a limiting assembly rotatably installed on the silica gel pad to fix the inner fistula needle. The device is simple to operate and convenient to quickly adjust the position of the limiting assembly according to the actual position of the inner fistula needle or the hose, without causing harm to the skin of the user, and the cavity in the device for limiting the hose can be adjusted to face the required direction of the hose.

Description

Technical Field

[0001] This utility model specifically relates to an easily adjustable fistula needle fixation device. Background Technology

[0002] An arteriovenous fistula (AVF) is an abnormal or artificially created direct passage between an artery and a vein in the vascular system. This passage connects the artery and vein, providing a more stable and efficient blood flow channel for dialysis. The AVF needle mainly consists of a stainless steel puncture needle tube, needle wings, a flexible tube connected to the needle tube, a catheter clamp, and a connector. When fixing the AVF needle, it is usually secured to the patient's skin using medical tape. Alternatively, patent number 2022219870393, entitled "An AVF Needle Fixation Device," describes a method where a fixing band is glued to the patient's skin, and then the AVF needle is fixed using a fixing box. This method is simple to operate and provides good fixation.

[0003] Existing methods require removing medical tape or fixation bands from the patient's skin and then re-attaching them after fixing the arteriovenous fistula (AVF) needle. This process of removing and re-attaching can cause skin irritation and discomfort, resulting in poor efficacy. Furthermore, it is inconvenient to adjust the orientation of the fixation device according to the location of the tubing. Therefore, we propose an easily adjustable AVF needle fixation device. Utility Model Content

[0004] The purpose of this invention is to provide an easily adjustable arteriovenous fistula needle fixation device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a conveniently adjustable arteriovenous fistula needle fixation device, comprising:

[0006] Fixing strap;

[0007] A first adhesive layer is disposed on the lower surface of the fixing strip, and the lower surface of the first adhesive layer has a protective film.

[0008] The silicone pad is attached to the first adhesive layer via Velcro.

[0009] The limiting component is rotatably mounted on the silicone pad to fix the fistula needle.

[0010] Preferably, the limiting component includes a fixed seat, an adjusting seat, a support block, and a limiting cover plate. The fixed seat is fixed to the upper surface of the silicone pad, and the adjusting seat is rotatably sleeved on the fixed seat. Support blocks are fixed at the four corners of the upper surface of the adjusting seat, and a limiting cover plate is rotatably installed on one side of the support block. A cavity for placing an arteriovenous fistula needle is formed between the limiting cover plate and the adjusting seat.

[0011] Preferably, an elastic strip is disposed on the inner wall of the adjusting seat, and adjusting clamping grooves matched with the elastic strip are circumferentially arranged on the outer surface of the fixing seat.

[0012] Preferably, a clamping block is fixed at one end of the lower surface of the limiting cover plate, and a limiting groove corresponding to the clamping block is disposed at the edge of the upper surface of the adjusting seat.

[0013] Preferably, a silica gel block is disposed in the middle of the lower surface of the limiting cover plate, and a second adhesive layer is disposed on the lower surface of the silica gel block.

[0014] Preferably, the cross section of the silica gel block is in a "door" shape.

[0015] Preferably, the lower surface of the silica gel pad is provided with a hook and loop fastener matched with the fixing strap.

[0016] Preferably, the fixing strap is rectangular, and both ends of the fixing strap are provided with chamfers.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] The present utility model is provided with a fixing strap, a first adhesive layer, a silica gel pad and a limiting assembly, which avoids the inconvenience of readjusting the fistula needle after the traditional fixation of the fistula needle. The device is easy to operate, facilitates quick adjustment of the position of the limiting assembly according to the actual position of the fistula needle or the hose, will not cause damage to the user's skin, and can adjust the orientation of the cavity for limiting the hose in the device according to the required orientation of the hose, improving the practicability of the device. Brief Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of the present utility model;

[0020] Figure 2 is a schematic structural diagram of the limiting assembly of the present utility model;

[0021] Figure 3 is a schematic structural diagram of the silica gel block of the present utility model;

[0022] Figure 4 is a schematic cross-sectional structural diagram of the adjusting seat of the present utility model;

[0023] Figure 5 is a schematic diagram of adjusting the orientation of the hose according to the present utility model.

[0024] In the figures: 1. Fixing strap; 2. First adhesive layer; 3. Silica gel pad; 4. Limiting assembly; 401. Fixing seat; 402. Adjusting seat; 403. Support block; 404. Limiting groove; 405. Limiting cover plate; 406. Clamping block; 407. Silica gel block; 408. Second adhesive layer; 409. Elastic strip. Detailed Description of the Embodiments

[0025] 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.

[0026] Please see Figures 1-5 This utility model provides a technical solution: an easily adjustable arteriovenous fistula needle fixation device, comprising:

[0027] Fixing strap 1;

[0028] The first adhesive layer 2 is disposed on the lower surface of the fixing strip 1, and the lower surface of the first adhesive layer 2 has a protective film.

[0029] The silicone pad 3 is attached to the first adhesive layer 2 by Velcro, which facilitates the quick separation of the limiting component 4 from the fixing band 1, thereby facilitating the movement and adjustment of the limiting component 4 along one side of the fixing band 1;

[0030] The limiting component 4 is rotatably mounted on the silicone pad 3 to fix the fistula needle, which facilitates the rotation and adjustment of the limiting component 4, and can then adjust the required cavity orientation according to the actual orientation of the connecting tube.

[0031] In this embodiment, preferably, the limiting component 4 includes a fixed seat 401, an adjusting seat 402, a support block 403, and a limiting cover plate 405. The fixed seat 401 is fixed to the upper surface of the silicone pad 3, and the adjusting seat 402 is rotatably sleeved on the fixed seat 401. The support block 403 is fixed at the four corners of the upper surface of the adjusting seat 402, and the limiting cover plate 405 is rotatably installed on one side of the support block 403, which facilitates the limiting and fixing of the fistula needle or the tubing connected to the fistula needle. A cavity for placing the fistula needle is formed between the limiting cover plate 405 and the adjusting seat 402, which facilitates the placement of the fistula needle or the tubing connected to the fistula needle.

[0032] In this embodiment, preferably, the inner wall of the adjusting seat 402 is provided with an elastic strip 409, and the outer surface of the fixed seat 401 is provided with an adjusting groove that cooperates with the elastic strip 409 along its circumference, so as to facilitate the rotation and adjustment of the adjusting seat 402 to adjust the orientation of the cavity.

[0033] In this embodiment, preferably, a locking block 406 is fixed to one end of the lower surface of the limiting cover plate 405, and a limiting groove 404 corresponding to the locking block 406 is provided on the edge of the upper surface of the adjusting seat 402.

[0034] In this embodiment, preferably, a silica gel block 407 is arranged in the middle of the lower surface of the limit cover plate 405, and a second adhesive layer 408 is arranged on the lower surface of the silica gel block 407, which facilitates the quick connection of the fistula needle or hose through the elasticity of the silica gel block 407 and the adhesiveness of the second adhesive layer 408.

[0035] In this embodiment, preferably, the cross section of the silica gel block 407 is in a "J" shape, which is convenient for making the middle part of the silica gel block 407 have a better elastic effect.

[0036] In this embodiment, preferably, the lower surface of the silica gel pad 3 is provided with a hook and loop fastener matched with the fixing band 1, which facilitates the disassembly and installation of the silica gel pad 3.

[0037] In this embodiment, preferably, the fixing band 1 is rectangular, and both ends of the fixing band 1 are provided with chamfers, which facilitates better connection between the fixing band 1 and the user's arm.

[0038] The working principle and use process of the present utility model are as follows: When in use, tear off the protective film on the lower surface of the first adhesive layer 2, stick the fixing band 1 on the patient's skin surface through the first adhesive layer 2, then place the fistula needle or the hose connected with the fistula needle on the adjusting seat 402, rotate the limit cover plate 405 to make the clamping block 406 engage with the limit groove 404, so that the fistula needle or hose can be limited inside the cavity, and then fixed through the second adhesive layer 408 and the silica gel block 407. When it is necessary to adjust the orientation of the hose, the adjusting seat 402 can be directly rotated, and at this time, the adjusting seat 402 drives the support block 403 to rotate, so as to adjust the orientation of the openings at both ends of the cavity and further adjust the actual required position of the catheter. Further, after the fixing band 1 is fixed with the first adhesive layer 2, there is no need to tear the fixing band 1 from the user's skin surface. Only by pulling the silica gel pad 3 to one side of the fixing band 1, the hook and loop fastener between the silica gel pad 3 and the fixing band 1 can be separated, and then the position of the limit assembly 4 can be adjusted according to the actual required position, which is convenient to operate.

[0039] Although the embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model, and the scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A conveniently adjustable arteriovenous fistula needle fixation device, characterized in that, comprising: a fixing strap (1); a first adhesive layer (2), arranged on the lower surface of the fixing strap (1), wherein the lower surface of the first adhesive layer (2) is provided with a protective film; a silica gel pad (3), connected to the first adhesive layer (2) via a hook and loop fastener; a limiting assembly (4), rotatably mounted on the silica gel pad (3) to fix an internal fistula needle; The limiting assembly (4) comprises a fixing base (401), an adjusting base (402), support blocks (403) and a limiting cover plate (405). The fixing base (401) is fixed on the upper surface of the silica gel pad (3), and the adjusting base (402) is rotatably sleeved on the fixing base (401). The four corners of the upper surface of the adjusting base (402) are respectively fixed with the support blocks (403), and one side of the support blocks (403) is rotatably mounted with the limiting cover plate (405). A cavity for placing the internal fistula needle is formed between the limiting cover plate (405) and the adjusting base (402).

2. The easily adjustable arteriovenous fistula needle fixation device according to claim 1, characterized in that: An elastic strip (409) is arranged on the inner wall of the adjusting base (402), and an adjusting clamping groove matched with the elastic strip (409) is formed on the outer surface of the fixing base (401) along the circumferential direction thereof.

3. The easily adjustable arteriovenous fistula needle fixation device according to claim 1, characterized in that: A clamping block (406) is fixed at one end of the lower surface of the limiting cover plate (405), and a limiting groove (404) corresponding to the clamping block (406) is arranged at the edge of the upper surface of the adjusting base (402).

4. The easily adjustable arteriovenous fistula needle fixation device according to claim 1, characterized in that: A silica gel block (407) is arranged in the middle of the lower surface of the limiting cover plate (405), and a second adhesive layer (408) is arranged on the lower surface of the silica gel block (407).

5. The easily adjustable arteriovenous fistula needle fixation device according to claim 4, characterized in that: The cross section of the silica gel block (407) is in a "冂" shape.

6. The easily adjustable arteriovenous fistula needle fixation device according to claim 1, characterized in that: The lower surface of the silica gel pad (3) is provided with a hook and loop fastener matched with the fixing strap (1).

7. The easily adjustable arteriovenous fistula needle fixation device according to claim 1, characterized in that: The fixing strap (1) is rectangular, and both ends of the fixing strap (1) are provided with chamfers.

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