A catheter fixing device for hemodialysis nursing

Abstract

The application relates to the technical field of biomedical engineering, and particularly relates to a catheter fixing device for hemodialysis nursing. The catheter fixing device comprises a sticking belt, a fixing ring fixed to the sticking belt, a plurality of straight grooves arranged in the fixing ring, a rotating ring rotationally connected to the fixing ring, a plurality of inclined arc grooves and V-shaped grooves arranged in the rotating ring, a sliding ring slidably connected to the fixing ring, a plurality of limiting portions arranged in the sliding ring, a sliding pin slidably connected to the straight grooves, a connecting block fixed to the sliding pin, and a connecting rod fixed to the connecting block. The connecting block drives the connecting rod to move. During normal use of the catheter, the catheter's flowability is ensured. When the catheter is pushed and pulled due to movement of a patient, the plurality of connecting rods are used to jointly approach the catheter, the catheter is deformed under pressure, the catheter is emergently compressed, and the stability of the catheter and the comfort of the patient are ensured.

Description

Technical Field

[0001] This invention relates to the field of biomedical engineering technology, and in particular to a catheter fixation device for hemodialysis nursing. Background Technology

[0002] Hemodialysis is an important treatment for patients with renal failure. During the treatment, a long-term vascular access needs to be established through an indwelling catheter. The effective fixation of the catheter is not only related to the smooth progress of dialysis treatment, but also directly affects the patient's comfort and safety. At present, in order to ensure the stability of blood flow in the catheter, the commonly used catheter fixation method in clinical practice is to stick the catheter to the patient's skin surface for a long time.

[0003] However, in actual use, patients inevitably have movements such as turning over and sitting up. These movements will generate pushing and pulling forces on the catheter. Once the catheter is affected by pushing and pulling forces, the existing adhesive structure will deform, causing relative movement between the catheter and the patient's skin, or even causing the catheter to slip off. This not only seriously affects the stability of the catheter during use, but also affects the patient's comfort during treatment. Summary of the Invention

[0004] In order to overcome the shortcomings described in the background art, the present invention provides a catheter fixation device for hemodialysis nursing.

[0005] Technical Solution: A catheter fixing device for hemodialysis nursing includes an adhesive tape, a fixing ring fixedly connected to the adhesive tape, the fixing ring having a plurality of circumferentially evenly distributed straight grooves, a rotating ring rotatably connected to the fixing ring, the rotating ring having a plurality of circumferentially evenly distributed inclined arc grooves and a number of V-shaped grooves equal to the number of straight grooves, a sliding ring slidably connected to the fixing ring, the sliding ring having a number of limiting parts equal to the number of inclined arc grooves, the inclined arc grooves guiding adjacent limiting parts, a sliding pin slidably connected within the straight grooves, the V-shaped grooves guiding adjacent sliding pins, a connecting block fixedly connected to the sliding pins, and a connecting rod fixedly connected to the connecting block.

[0006] Furthermore, the middle part of the adhesive tape is made of a rigid material, the edges of the adhesive tape are made of a flexible material, and the edges of the adhesive tape are filled with liquid.

[0007] Furthermore, the sliding ring is slidably connected to a plurality of circumferentially evenly distributed limiting frames, and a first elastic element is fixedly connected between the limiting frames and the sliding ring.

[0008] Furthermore, the limiting frame is fixedly connected to the extrusion block, and the rotating ring is fixedly connected to the limiting block in the same number as the extrusion block. The limiting block is used to limit the movement of adjacent extrusion blocks.

[0009] Furthermore, an elastic pad is fixed to the lower part of the connecting rod, the elastic pad being used to compress the patient's skin, and a friction block is fixed to the side of all the connecting rods near the central axis of the fixing ring.

[0010] Furthermore, the lower part of all the connecting rods is jointly fixed with an elastic ring, which is used to compress the patient's skin.

[0011] Furthermore, the thickness of the elastic ring gradually increases from near its central axis to far away.

[0012] Furthermore, the connecting block is slidably connected to a sliding rod, and a second elastic element is fixedly connected between the sliding rod and the adjacent connecting block. The sliding rod is fixedly connected to symmetrically distributed sliding bars, and the fixing ring is provided with an equal number of inclined grooves as the number of sliding bars. The sliding bars slide within the adjacent inclined grooves.

[0013] Furthermore, all of the sliding rods are fixed with an elastic block on the side closest to the central axis of the fixed ring.

[0014] Furthermore, the elastic pad is fixedly connected to a compression pad, which is made of elastic material and is used to compress the patient's skin. The compression pad is positioned away from the adjacent elastic pad and is in contact with the adjacent connecting rod. The compression pad is fixedly connected to symmetrically distributed sliding frames, each of which is slidably connected to the adjacent connecting rod. The sliding rod is fixedly connected to symmetrically distributed trigger blocks, which are used to compress the adjacent sliding frames.

[0015] Compared with the prior art, the present invention has the following advantages: The present invention uses a connecting block to drive the connecting rod to move, ensuring the flowability of the catheter during normal use. When the catheter is pushed or pulled due to patient movement, multiple connecting rods approach the catheter together, causing it to deform under pressure and providing emergency clamping, ensuring catheter stability and patient comfort. When the catheter sways circumferentially due to patient movement, it tends to compress the limiting frame. The limiting frame and the first elastic element with stored force buffer the circumferential sway of the catheter. If the circumferential sway of the catheter causes the limiting frame to move under pressure, the squeezing block and the limiting block guide the sliding ring to move, causing the sliding pin to drive the connecting rod to move through the connecting block. Multiple connecting rods approach the catheter together, causing it to deform under pressure and providing emergency clamping, ensuring catheter stability and patient comfort. As the connecting rod approaches the catheter, the connecting rod drives the elastic pad to move and the elastic ring to deform, causing the elastic pad and elastic ring to push the patient's skin towards the catheter, reducing the probability of gaps forming between the patient's skin and the catheter due to catheter movement, thereby ensuring catheter stability. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional cross-sectional view of the adhesive tape of the present invention; Figure 3 This is a three-dimensional structural cross-sectional view of the fixed ring, rotating ring, and sliding ring of the present invention; Figure 4 This is an exploded three-dimensional view of the fixed ring, rotating ring, and sliding ring of the present invention. Figure 5 This is an exploded three-dimensional view of the sliding pin and connecting block of the present invention; Figure 6 This is an exploded three-dimensional view of the slide bar and inclined groove of the present invention.

[0017] The component names and serial numbers in the diagram are as follows: 1. Adhesive tape, 2. Fixing ring, 201. Straight groove, 3. Rotating ring, 301. Inclined arc groove, 302. V-groove, 4. Sliding ring, 401. Limiting part, 5. Sliding pin, 6. Connecting block, 7. Connecting rod, 8. Limiting frame, 9. First elastic element, 10. Compression block, 11. Limiting block, 12. Elastic pad, 13. Friction block, 14. Elastic ring, 15. Sliding rod, 16. Second elastic element, 17. Sliding rod, 18. Inclined groove, 19. Elastic block, 20. Compression pad, 21. Sliding frame, 22. Trigger block. Detailed Implementation

[0018] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0019] Example 1

[0020] A catheter fixation device for hemodialysis care, such as Figures 1-6As shown, the device includes an adhesive tape 1. The lower side of the adhesive tape 1 is provided with an adhesive substance to adhere the device to the area around the patient's wound. The center of the adhesive tape 1 has a through-hole for a catheter to pass through. The center of the adhesive tape 1 is made of a rigid material, while the edges are made of a flexible material and filled with liquid. When the edges of the adhesive tape 1 deform due to patient movement or pressure, the liquid-filled structure at the edges cushions the deformation, reducing the probability of movement in the center of the adhesive tape 1 and ensuring the stability of the device. A fixing ring 2 is fixedly attached to the adhesive tape 1. The fixed ring 2 is provided with a plurality of straight grooves 201 evenly distributed circumferentially. The fixed ring 2 is rotatably connected to a rotating ring 3. The rotating ring 3 is provided with a plurality of inclined arc grooves 301 evenly distributed circumferentially and V-shaped grooves 302 in the same number as the straight grooves 201. The fixed ring 2 is slidably connected to a sliding ring 4. During the use of this device, the guide tube passes through the fixed ring 2, the rotating ring 3, and the sliding ring 4. The sliding ring 4 is provided with a number of limiting parts 401 in the same number as the inclined arc grooves 301. When the sliding ring 4 moves up and down, all the limiting parts 401 on the sliding ring 4 move up and down, and the inclined arc grooves 301... The adjacent limiting part 401 provides guidance. The limiting part 401 compresses the rotating ring 3 to rotate reciprocally through the inclined arc groove 301. A sliding pin 5 is slidably connected in the straight groove 201. During the reciprocating rotation of the rotating ring 3, all the V-shaped grooves 302 on the rotating ring 3 reciprocate. The V-shaped grooves 302 guide the adjacent sliding pins 5. Whether the V-shaped grooves 302 rotate clockwise or counterclockwise, the sliding pins 5 move towards the central axis of the rotating ring 3 (initially, the limiting part 401 is located in the middle of the corresponding inclined arc groove 301, and the sliding pin 5 is located in the middle of the corresponding V-shaped groove 302). That is, when the sliding ring 4 moves up and down, the sliding pin 5 moves in the direction of the central axis of the rotating ring 3. The sliding pin 5 is fixedly connected to the connecting block 6, and the connecting block 6 is fixedly connected to the connecting rod 7. In this embodiment, the catheter is clamped together by all the connecting rods 7. The sliding pin 5 is used to drive the connecting block 6 to move, and the connecting block 6 drives the connecting rod 7 to move. During normal use of the catheter, the flowability of the catheter is ensured. When the catheter is pushed or pulled due to the patient's movement, multiple connecting rods 7 are used to approach the catheter together, so that the catheter is deformed by pressure and the catheter is clamped in an emergency, ensuring the stability of the catheter and the comfort of the patient.

[0021] like Figure 1 and Figure 3As shown, a sliding ring 4 is slidably connected to several circumferentially evenly distributed limiting frames 8. A first elastic element 9, which is a compression spring, is fixed between the limiting frames 8 and the sliding ring 4. When the catheter passes through the fixed ring 2, rotating ring 3, and sliding ring 4, all limiting frames 8 clamp the catheter. At this time, the first elastic element 9 is in a compressed state. When the catheter sways circumferentially due to patient movement, the catheter tends to compress the limiting frames 8. The circumferential swaying of the catheter is buffered by the limiting frames 8 and the force-accumulating first elastic element 9. A compression block 10 is fixedly connected to the limiting frame 8, and the rotating ring 3 is fixedly connected to the limiting blocks 11 in the same number as the compression blocks 10. The opposing sides of the compression blocks 10 and adjacent limiting blocks 11 are provided with inclined surfaces. If the catheter sways circumferentially... The pressure caused by the limiting frame 8 to move causes the squeezing block 10 to move. The limiting block 11 limits the adjacent squeezing block 10, causing the squeezing block 10 to move upward along the inclined surface of the limiting block 11. The squeezing block 10 causes the sliding ring 4 to move upward, so that the sliding pin 5 moves the connecting rod 7 through the connecting block 6. Multiple connecting rods 7 move closer to the catheter, causing the catheter to deform under pressure and providing emergency compression to ensure the stability of the catheter and the comfort of the patient. (The smaller the diameter of the catheter, the closer the limiting frame 8 and the squeezing block 10 are to the central axis of the rotating ring 3. The more the squeezing block 10 moves downward along the inclined surface of the limiting block 11, the more the sliding ring 4 moves downward, and the closer the connecting rod 7 is to the catheter, in order to accommodate catheters of different diameters.)

[0022] Specific workflow: When a patient needs to use this device to fix the catheter, the device is attached around the patient's wound using the adhesive tape 1, and the catheter is passed through the adhesive tape 1, fixing ring 2, rotating ring 3, and sliding ring 4. The catheter is then clamped by all the limiting frames 8. At this time, due to the contact between the limiting frames 8 and the catheter, the first elastic element 9 is in a compressed and stored state. When the edge of the adhesive tape 1 deforms due to the patient's movement and pressure, the liquid bladder structure at the edge of the adhesive tape 1 buffers the deformation, thereby reducing the probability of movement in the middle of the adhesive tape 1 and ensuring the stability of the device.

[0023] When the catheter sways circumferentially due to patient movement, it tends to compress the limiting frame 8. The limiting frame 8 and the first elastic element 9 buffer the circumferential sway of the catheter. When the catheter is pushed or pulled due to patient movement, the catheter drives the sliding ring 4 to move through all the limiting frames 8. All the limiting parts 401 on the sliding ring 4 move. The inclined arc groove 301 guides the adjacent limiting parts 401. The limiting parts 401 compress the rotating ring 3 to rotate through the inclined arc groove 301. During the rotation of the rotating ring 3, all the V-grooves 302 on the rotating ring 3 rotate. The V-grooves 302 guide the adjacent sliding pins 5. Whether the V-grooves 302 rotate clockwise or counterclockwise, the sliding pins 5 move towards the central axis of the rotating ring 3. That is, when the sliding ring 4 moves, the sliding pins 5 move towards the central axis of the rotating ring 3.

[0024] During normal use of the catheter, to ensure the flow of the catheter, when the sliding pin 5 moves in the direction of the central axis of the rotating ring 3, the sliding pin 5 drives the connecting rod 7 to move through the connecting block 6. When the catheter is pushed or pulled due to the patient's movement, multiple connecting rods 7 are used to approach the catheter together, causing the catheter to be deformed under pressure, and the catheter is tightened in an emergency, so that the patient and the catheter are relatively fixed, ensuring the stability of the catheter and the patient's comfort.

[0025] During catheter use, if the catheter circumferentially sways and causes the limiting frame 8 to move under pressure, the limiting frame 8 will drive the squeezing block 10 to move. The limiting block 11 will limit the adjacent squeezing block 10, causing the squeezing block 10 to move upward along the inclined surface of the limiting block 11. The squeezing block 10 will drive the sliding ring 4 to move upward, so that the sliding pin 5 will drive the connecting rod 7 to move through the connecting block 6. Multiple connecting rods 7 will approach the catheter together, causing the catheter to deform under pressure and perform emergency clamping of the catheter, ensuring the stability of the catheter and the comfort of the patient.

[0026] Example 2

[0027] Based on Example 1, such as Figure 5 and Figure 6As shown, an elastic pad 12 is fixedly attached to the lower part of the connecting rod 7. The elastic pad 12 is used to compress the patient's skin. A friction block 13 is fixedly attached to the side of all connecting rods 7 near the central axis of the fixing ring 2. The side of the friction block 13 near the catheter is rough. In the above embodiment, the catheter is clamped by the connecting rod 7. In this embodiment, the catheter is clamped by the friction block 13 to increase the frictional resistance experienced by the catheter when it is clamped in an emergency, thus ensuring the stability of the catheter. An elastic ring 14 is fixedly attached to the lower part of all connecting rods 7. Both the elastic pad 12 and the elastic ring 14 are in contact with the patient's skin. The elastic ring 14 is used to compress the patient's skin. The thickness of the elastic ring 14 is... The elastic ring 14 gradually increases in size from near its central axis to far away, increasing the force with which it gathers the patient's skin. When all the limiting frames 8 clamp the catheter, the elastic ring 14 is stretched and deformed, causing its inner diameter to expand. The elastic ring 14 tends to contract towards its central axis. As the connecting rod 7 approaches the catheter, it moves the elastic pad 12, causing the elastic ring 14 to rebound and deform. This pushes the patient's skin towards the catheter, gathering the skin around the catheter and reducing the probability of gaps forming between the patient's skin and the catheter due to catheter movement, thus ensuring the stability of the catheter.

[0028] Example 3

[0029] Based on Example 2, such as Figure 5 and Figure 6 As shown, a sliding rod 15 is slidably connected to the connecting block 6. A second elastic element 16, which is a compression spring, is fixed between the sliding rod 15 and the adjacent connecting block 6. Two symmetrically distributed sliding rods 17 are fixed to the sliding rod 15. The fixing ring 2 is provided with inclined grooves 18, the same number as the number of sliding rods 17. The inclined grooves 18 gradually slope downward from the distance from the guide tube to the distance from the guide tube. During the movement of the connecting block 6 driven by the sliding pin 5, the connecting block 6 drives the two sliding rods 17 to move through the sliding rod 15. The sliding rods 17 slide in the adjacent inclined grooves 18, causing the sliding rods 17 to drive the sliding rod 15. Moving downwards, all sliding rods 15 are fixed with elastic blocks 19 on the side near the central axis of the fixed ring 2. The sliding rods 15 are used to drive the adjacent elastic blocks 19 to move. When the conduit moves, the sliding rods 15 drive the elastic blocks 19 to clamp the conduit. At the same time, the end of the elastic block 19 near the sliding rod 15 moves downwards, and the end of the elastic block 19 away from the sliding rod 15 bends upwards and presses the conduit. The elastic blocks 19 generate a downward squeezing force on the conduit. All elastic blocks 19 deform and press the conduit downwards, reducing the probability of the conduit moving and ensuring the stability of the conduit.

[0030] like Figure 5 and Figure 6As shown, an elastic pad 12 is fixedly connected to a compression pad 20, which is made of elastic material. The compression pad 20 is in contact with the patient's skin and is used to compress the patient's skin. The compression pad 20 is located away from the adjacent elastic pad 12 and is in contact with the adjacent connecting rod 7. The compression pad 20 is fixedly connected to two symmetrically distributed sliding frames 21, both of which are slidably connected to the adjacent connecting rod 7. The sliding rod 15 is fixedly connected to two symmetrically distributed trigger blocks 22. The sliding frames 21 and the adjacent trigger blocks 22 are provided with inclined surfaces on their opposite sides. During the movement of the sliding rod 15, the sliding rod 15 drives the two trigger blocks 22 to move. The trigger blocks 22 compress the adjacent sliding frames 21, and the sliding frames 21 move along the inclined surfaces of the trigger blocks 22. The trigger blocks 22 drive the part of the compression pad 20 away from the catheter to move towards the catheter. By compressing the patient's skin towards the catheter through the compression pad 20, the probability of gaps between the patient's skin and the catheter due to catheter movement is reduced, thereby ensuring the stability of the catheter.

[0031] The above are merely preferred embodiments of the present invention and are 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.

Claims

1. A catheter fixation device for hemodialysis nursing, characterized in that, The device includes an adhesive tape (1), which is fixedly connected to a fixing ring (2). The fixing ring (2) is provided with a plurality of straight grooves (201) evenly distributed in the circumference. The fixing ring (2) is rotatably connected to a rotating ring (3). The rotating ring (3) is provided with a plurality of inclined arc grooves (301) evenly distributed in the circumference and a number of V-shaped grooves (302) the same as the number of straight grooves (201). The fixing ring (2) is slidably connected to a sliding ring (4). The sliding ring (4) is provided with a number of limiting parts (401) the same as the number of inclined arc grooves (301). The inclined arc grooves (301) are used to guide adjacent limiting parts (401). A sliding pin (5) is slidably connected in the straight groove (201). The V-shaped grooves (302) are used to guide adjacent sliding pins (5). A connecting block (6) is fixedly connected to the sliding pin (5). A connecting rod (7) is fixedly connected to the connecting block (6).

2. The catheter fixation device for hemodialysis nursing according to claim 1, characterized in that, The middle part of the adhesive tape (1) is made of rigid material, the edge of the adhesive tape (1) is made of flexible material, and the edge of the adhesive tape (1) is filled with liquid.

3. The catheter fixation device for hemodialysis nursing according to claim 1, characterized in that, The sliding ring (4) is slidably connected to a plurality of circumferentially evenly distributed limit frames (8), and a first elastic element (9) is fixed between the limit frames (8) and the sliding ring (4).

4. The catheter fixation device for hemodialysis nursing according to claim 3, characterized in that, The limiting frame (8) is fixedly connected to the extrusion block (10), and the rotating ring (3) is fixedly connected to the limiting block (11) in the same number as the extrusion block (10). The limiting block (11) is used to limit the adjacent extrusion block (10).

5. A catheter fixation device for hemodialysis nursing according to claim 1, characterized in that, An elastic pad (12) is fixed to the lower part of the connecting rod (7), the elastic pad (12) is used to squeeze the patient's skin, and a friction block (13) is fixed to the side of all the connecting rods (7) near the central axis of the fixing ring (2).

6. A catheter fixation device for hemodialysis nursing according to claim 5, characterized in that, All of the connecting rods (7) are connected together to an elastic ring (14) at the bottom, which is used to compress the patient's skin.

7. A catheter fixation device for hemodialysis nursing according to claim 6, characterized in that, The thickness of the elastic ring (14) gradually increases from near its central axis to far away.

8. A catheter fixation device for hemodialysis nursing according to claim 5, characterized in that, The connecting block (6) is slidably connected to a sliding rod (15), and a second elastic element (16) is fixed between the sliding rod (15) and the adjacent connecting block (6). The sliding rod (15) is fixedly connected to symmetrically distributed sliding rods (17). The fixing ring (2) is provided with an equal number of inclined grooves (18) as the sliding rods (17). The sliding rods (17) slide within the adjacent inclined grooves (18).

9. A catheter fixation device for hemodialysis nursing according to claim 8, characterized in that, All of the sliding rods (15) are fixed with elastic blocks (19) on the side near the central axis of the fixed ring (2).

10. A catheter fixation device for hemodialysis nursing according to claim 9, characterized in that, The elastic pad (12) is fixedly connected to a compression pad (20), which is made of elastic material. The compression pad (20) is used to compress the patient's skin. The compression pad (20) is located away from the adjacent elastic pad (12) and is in contact with the adjacent connecting rod (7). The compression pad (20) is fixedly connected to a symmetrically distributed sliding frame (21) that is slidably connected to the adjacent connecting rod (7). The sliding rod (15) is fixedly connected to a symmetrically distributed trigger block (22), which is used to compress the adjacent sliding frame (21).

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