Hemodialysis catheter fixing device

Abstract

The utility model discloses a hemodialysis catheter fixing device which comprises an external connecting plate, the external connecting plate is installed on external equipment, a fixing mechanism is arranged on the external connecting plate, the fixing mechanism comprises a threaded pipe, a bidirectional sleeve, a middle sleeve, a middle strip, an elastic strip, an adjusting pipe, a rotating mechanism and a positioning mechanism, the bidirectional sleeve is installed on the external connecting plate, and the middle sleeve is installed on the external connecting plate. The number of the threaded pipes is two, the two threaded pipes are installed on the two sides of the two-way sleeve respectively, a plurality of elastic strips are symmetrically installed at the two ends of the middle sleeve respectively, due to the design of anti-skid grooves, the friction force of the adjusting pipe is increased, the fixing reliability is improved, and due to the arrangement of limiting rings, excessive rotation of the adjusting pipe is effectively prevented; the hemodialysis catheter fixing device is simple in structure, the catheter is protected against damage, the whole mechanism is ingenious in design, all parts are tightly matched, enough fixing force can be provided, excessive pressure on the catheter can be avoided, and the safety and stability of hemodialysis catheter fixing are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of dialysis catheter fixation technology, and more specifically, to a hemodialysis catheter fixation device. Background Technology

[0002] In current medical practice, hemodialysis is one of the important means of treating patients with renal failure. However, existing hemodialysis catheter fixation devices have some significant shortcomings in practical applications. These devices are usually designed simply, lacking flexibility and adaptability, and cannot effectively adapt to the different physical characteristics and specific needs of different patients. The fixation process is often cumbersome and complex, requiring medical staff to spend a lot of time and effort to ensure the correct position of the catheter. In addition, these devices are often unsatisfactory in terms of fixation effectiveness, easily causing slight displacement or slippage of the catheter, increasing the risk of infection and other complications.

[0003] These issues directly impact the effectiveness of hemodialysis treatment and patient comfort. Improper fixation may require frequent catheter adjustments, increasing discomfort and disrupting the dialysis process. For healthcare staff, inconvenient fixation translates to increased workload and potential medical risks. The extra time required for monitoring and adjusting catheter position reduces efficiency and distracts them from other critical medical tasks. In the long run, this can lead to a waste of medical resources and negatively affect the overall quality of healthcare services. Utility Model Content

[0004] In view of the problems existing in the prior art, the present invention provides a hemodialysis catheter fixing device to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a hemodialysis catheter fixing device, comprising an outer plate, which is installed on an external device. A fixing mechanism is provided on the outer plate. The fixing mechanism includes a threaded tube, a bidirectional sleeve, an intermediate sleeve, intermediate strips, elastic strips, an adjusting tube, a rotating mechanism, and a positioning mechanism. The bidirectional sleeve is installed on the outer plate. Two threaded tubes are provided, and the two threaded tubes are respectively installed on both sides of the bidirectional sleeve. Multiple intermediate strips are equidistantly installed on the side wall of the intermediate sleeve, and the multiple intermediate strips are respectively locked inside the bidirectional sleeve. Multiple elastic strips are symmetrically installed at both ends of the intermediate sleeve. Adjusting tubes are respectively installed on the multiple elastic strips, and the adjusting tubes are rotatably connected to the inner wall of the threaded tube. Multiple anti-slip grooves are equidistantly opened on the outer wall of the adjusting tube. The rotating mechanism and the positioning mechanism are respectively installed on the threaded tube.

[0006] The present invention is further configured such that each of the two regulating tubes is provided with a limiting ring, the two limiting rings are respectively attached to the outer wall of the threaded tube, and the limiting rings and the regulating tubes are coaxially arranged. The design of the limiting rings ensures the stability of the regulating tubes.

[0007] The present invention is further configured such that the rotating mechanism includes a rotating sleeve and a push spring, and two rotating sleeves are provided, and the two rotating sleeves are slidably connected to the two threaded pipes respectively. Each rotating sleeve is equipped with a push spring. The design of the rotating mechanism ensures the convenience of rotation.

[0008] The present invention is further configured such that multiple vertical strips are equidistantly arranged on the outer wall of each of the adjusting tubes, and multiple push springs are provided, and the multiple push springs are respectively installed on the inner wall of the rotating sleeve. The push springs abut against the vertical strips, and the design of the vertical strips ensures the continuity of adjustment.

[0009] The present invention is further configured such that the external conduit is slidably connected inside the two regulating tubes, and the plurality of elastic strips abut against the outer wall of the conduit.

[0010] The present invention is further configured such that the positioning mechanism includes a follower sleeve and a positioning disk, a rotating sleeve is slidably connected to the outer wall of each follower sleeve, and a positioning disk is installed on each follower sleeve. The design of the positioning mechanism ensures the convenience of positioning.

[0011] The present invention is further configured such that multiple positioning holes are equally spaced on the positioning disk, and each positioning hole has a rounded corner. The design of multiple positioning holes ensures that multiple positions can be fixed.

[0012] The present invention is further provided with positioning rods on both sides of the outer plate, and the positioning rods are slidably connected in the positioning holes. The design of the positioning rods ensures the stability of the positioning.

[0013] Compared with the prior art, the present invention provides a hemodialysis catheter fixation device, which has the following beneficial effects:

[0014] 1. The fixation mechanism achieves bidirectional fixation of the catheter through the cooperation of the bidirectional sleeve and threaded tube. The design of the intermediate sleeve and intermediate strip ensures the stability of the overall structure. The combination of the elastic strip and the adjusting tube provides flexible adjustment capability to adapt to catheters of different sizes. The anti-slip groove design increases the friction of the adjusting tube and improves the reliability of fixation. The setting of the limit ring effectively prevents excessive rotation of the adjusting tube and protects the catheter from damage. The entire mechanism is ingeniously designed, and the components fit together tightly, which can provide sufficient fixation force while avoiding excessive pressure on the catheter, thus improving the safety and stability of hemodialysis catheter fixation.

[0015] 2. The rotating mechanism achieves precise control of the adjustment tube through the cooperation of the rotating sleeve and the push spring. The vertical bar design increases the accuracy and stability of the rotation, and the push spring provides appropriate resistance, making the adjustment process smoother and more controllable. The even distribution of multiple push springs ensures the balance of force and avoids deviations during the adjustment process. The sliding connection design of the rotating sleeve makes the operation more flexible and allows for fine-tuning as needed. The design of the entire mechanism not only improves the accuracy of adjustment but also increases the convenience of operation, enabling medical staff to quickly and accurately adjust the fixation of the catheter, greatly improving work efficiency and patient comfort.

[0016] 3. The positioning mechanism achieves precise locking of the rotational position through the cooperation of the follower sleeve and the positioning plate. The design of the positioning hole and positioning rod provides multiple fixing points, increasing the flexibility of adjustment. The rounded corners make the positioning process smoother and reduce resistance during operation. The pushable design of the positioning plate allows the operator to quickly lock the position after adjustment to prevent accidental movement. The design of the entire mechanism is simple and effective. It not only ensures the stability of the fixing device during use, but also provides the possibility of quick unlocking, making it convenient to adjust or replace the catheter when needed. This design improves the reliability and operability of catheter fixation during hemodialysis, providing patients with a safer and more comfortable treatment experience. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a hemodialysis catheter fixing device according to the present invention;

[0018] Figure 2 In this utility model Figure 1 A schematic diagram of the cross-sectional structure;

[0019] Figure 3 This is a schematic diagram of the bidirectional sleeve structure in this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the intermediate sleeve and elastic strip in this utility model;

[0021] Figure 5 This is a schematic diagram of the follower sleeve in this utility model.

[0022] In the diagram: 1. Outer plate; 2. Threaded tube; 3. Bidirectional sleeve; 4. Intermediate sleeve; 5. Intermediate strip; 6. Elastic strip; 7. Adjusting tube; 8. Anti-slip groove; 9. Limiting ring; 10. Rotating sleeve; 11. Push spring; 12. Vertical strip; 13. Follower sleeve; 14. Positioning plate; 15. Positioning hole; 16. Rounded corner; 17. Positioning rod. Detailed Implementation

[0023] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0024] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0025] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually relative to the directions shown in the drawings, or relative to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually relative to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned direction words are not used to limit the present invention.

[0026] Please see Figure 1-5 A hemodialysis catheter fixing device includes an external plate 1, which is installed on an external device. The external plate 1 has a fixing mechanism, which includes a threaded tube 2, a bidirectional sleeve 3, an intermediate sleeve 4, intermediate strips 5, elastic strips 6, an adjusting tube 7, a rotating mechanism, and a positioning mechanism. The bidirectional sleeve 3 is installed on the external plate 1. Two threaded tubes 2 are provided, each installed on one side of the bidirectional sleeve 3. Multiple intermediate strips 5 are equidistantly installed on the side wall of the intermediate sleeve 4, and each intermediate strip 5 is secured within the bidirectional sleeve 3. Multiple elastic strips 6 are symmetrically installed at both ends of the intermediate sleeve 4, and adjusting tubes 7 are installed on each of the elastic strips 6. The adjusting tubes 7 are rotatably connected to the inner wall of the threaded tube 2. Multiple anti-slip grooves 8 are equidistantly formed on the outer wall of the adjusting tube 7. The rotating mechanism and the positioning mechanism are installed on the threaded tube 2. Limiting rings 9 are provided on each of the two adjusting tubes 7, and the two limiting rings 9 are respectively attached to the outer wall of the threaded tube 2. The adjusting tube 7 is coaxially arranged. The rotating mechanism includes a rotating sleeve 10 and a push spring 11. There are two rotating sleeves 10, and the two rotating sleeves 10 are slidably connected to the two threaded tubes 2 respectively. Each rotating sleeve 10 is equipped with a push spring 11. Multiple vertical strips 12 are equidistantly arranged on the outer wall of each adjusting tube 7. Multiple push springs 11 are arranged, and the multiple push springs 11 are respectively installed on the inner wall of the rotating sleeve 10. The push springs 11 abut against the vertical strips 12. The external conduit is slidably connected to the two adjusting tubes 7. Multiple elastic strips 6 abut against the outer wall of the conduit. The positioning mechanism includes a follower sleeve 13 and a positioning plate 14. The rotating sleeve 10 is slidably connected to the outer wall of each follower sleeve 13. Each follower sleeve 13 is equipped with a positioning plate 14. Multiple positioning holes 15 are equidistantly opened on the positioning plate 14. Each positioning hole 15 is rounded with a corner 16. Positioning rods 17 are provided on both sides of the external plate 1. The positioning rods 17 are slidably connected in the positioning holes 15.

[0027] In this embodiment, when it is necessary to fix the hemodialysis catheter, since the external plate 1 is installed on the external equipment and the hemodialysis catheter is inserted into the regulating tube 7, rotating the rotating sleeve 10 can drive the rotation of multiple push springs 11. Since the push springs 11 abut against the vertical bar 12, they can drive the regulating tube 7 to rotate, and then drive the elastic bar 6 at one end to rotate. The middle sleeve 4 is locked in the bidirectional sleeve 3, and the middle bar 5 is locked in the bidirectional sleeve 3, so the position of the middle sleeve 4 is fixed. Then, by twisting the elastic bar 6, it can be pressed on the hemodialysis catheter, thereby ensuring the fixation of the hemodialysis catheter. The limiting ring 9 ensures the stability of the limiting of the regulating tube 7, thereby ensuring the fixation effect. The pushing force of the push spring 11 and the vertical bar 12 is limited. When the rotation force exceeds the elastic force of the push spring 11, it will disengage from the locking between the push spring 11 and the vertical bar 12, thus avoiding damage to the hemodialysis catheter due to excessive locking force.

[0028] More specifically, when the rotating sleeve 10 needs to be rotated, the follower sleeve 13 is locked on the rotating sleeve 10, which can drive the rotating sleeve 10 to rotate. Then the positioning disk 14 rotates synchronously. After the adjustment of the rotating sleeve 10 is completed, the positioning disk 14 is pushed backward so that the positioning hole 15 at the corresponding position is locked on the positioning rod 17, thereby ensuring the stability of the locking.

[0029] In summary, during the use or operation of the overall equipment: when it is necessary to fix the hemodialysis catheter, since the external plate 1 is installed on the external equipment and the hemodialysis catheter is inserted into the regulating tube 7, rotating the rotating sleeve 10 can drive the rotation of multiple push springs 11. Since the push springs 11 abut against the vertical bar 12, they can drive the regulating tube 7 to rotate, which in turn drives the elastic bar 6 at one end to rotate. The middle sleeve 4 is locked in the bidirectional sleeve 3, and the middle bar 5 is locked in the bidirectional sleeve 3, so the position of the middle sleeve 4 is fixed. Then, by twisting the elastic bar 6, it can press against the hemodialysis catheter, thereby ensuring the fixation of the hemodialysis catheter. The limiting ring 9 ensures the stability of the regulating tube 7, thus ensuring the fixation effect. Furthermore, the pushing force of the push springs 11 and the vertical bar 12 is limited. When the rotation force exceeds the elastic force of the push springs 11, the locking between them and the vertical bar 12 will be released, thus avoiding damage to the hemodialysis catheter due to excessive locking force.

[0030] When the rotating sleeve 10 needs to be rotated, the follower sleeve 13 is locked on the rotating sleeve 10, which can drive the rotating sleeve 10 to rotate. Then the positioning disk 14 rotates synchronously. After the adjustment of the rotating sleeve 10 is completed, the positioning disk 14 is pushed backward so that the positioning hole 15 at the corresponding position is locked on the positioning rod 17, thereby ensuring the stability of the locking.

[0031] In all the schemes mentioned above, the connection between the two components can be selected according to actual conditions by welding, bolt and nut connection, bolt or screw connection or other well-known connection methods, which will not be listed here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the present invention have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A hemodialysis catheter fixation device, comprising an external plate (1), characterized in that: An external plate (1) is installed on an external device. A fixing mechanism is provided on the external plate (1). The fixing mechanism includes a threaded tube (2), a bidirectional sleeve (3), an intermediate sleeve (4), an intermediate strip (5), an elastic strip (6), an adjusting tube (7), a rotating mechanism, and a positioning mechanism. The bidirectional sleeve (3) is installed on the external plate (1). There are two threaded tubes (2), and the two threaded tubes (2) are respectively installed on both sides of the bidirectional sleeve (3). Multiple intermediate strips (5) are installed at equal intervals on the side wall of the intermediate sleeve (4). The multiple intermediate strips (5) are respectively locked inside the bidirectional sleeve (3). Multiple elastic strips (6) are symmetrically installed at both ends of the intermediate sleeve (4). Adjusting tubes (7) are respectively installed on the multiple elastic strips (6), and the adjusting tubes (7) are rotatably connected to the inner wall of the threaded tube (2). Multiple anti-slip grooves (8) are equally spaced on the outer wall of the adjusting tube (7). The rotating mechanism and the positioning mechanism are respectively installed on the threaded tube (2).

2. The hemodialysis catheter fixation device according to claim 1, characterized in that: Each of the two regulating tubes (7) is provided with a limiting ring (9), and the two limiting rings (9) are respectively attached to the outer wall of the threaded tube (2), and the limiting rings (9) and the regulating tubes (7) are coaxially arranged.

3. The hemodialysis catheter fixation device according to claim 2, characterized in that: The rotating mechanism includes a rotating sleeve (10) and a push spring (11). There are two rotating sleeves (10), and the two rotating sleeves (10) are slidably connected to the two threaded pipes (2). Each rotating sleeve (10) is equipped with a push spring (11).

4. The hemodialysis catheter fixation device according to claim 3, characterized in that: Each of the regulating tubes (7) has multiple vertical strips (12) equidistantly arranged on its outer wall. Multiple push springs (11) are provided, and the multiple push springs (11) are respectively installed on the inner wall of the rotating sleeve (10). The push springs (11) abut against the vertical strips (12).

5. A hemodialysis catheter fixation device according to claim 4, characterized in that: The external conduit is slidably connected within the two regulating tubes (7), and the multiple elastic strips (6) abut against the outer wall of the conduit.

6. The hemodialysis catheter fixation device according to claim 1, characterized in that: The positioning mechanism includes a follower sleeve (13) and a positioning disk (14). A rotating sleeve (10) is slidably connected to the outer wall of each follower sleeve (13), and a positioning disk (14) is installed on each follower sleeve (13).

7. A hemodialysis catheter fixation device according to claim 6, characterized in that: The positioning disk (14) has multiple positioning holes (15) at equal intervals, and each positioning hole (15) has a rounded corner (16).

8. A hemodialysis catheter fixation device according to claim 7, characterized in that: The outer plate (1) is provided with positioning rods (17) on both sides, and the positioning rods (17) are slidably connected in the positioning holes (15).

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