Clinical peritoneal dialysis positioner

By designing a catheter fixation structure that combines a clamp and a spring, and medical cotton for the wearing structure, the problem of unstable fixation of the peritoneal dialysis positioner was solved, achieving stable catheter fixation and improving patient comfort.

CN223861116UActive Publication Date: 2026-02-03SHANDONG PROVINCIAL HOSPITAL AFFILIATED TO SHANDONG FIRST MEDICAL UNIVERSITY (SHANDONG PROVINCIAL HOSPITAL)
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Patent Information

Application Number
CN202520266567.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-19
Publication Date
2026-02-03
Estimated Expiration
2035-02-19

AI Technical Summary

Technical Problem

Existing peritoneal dialysis positioning devices are not very effective at fixing catheters, and the catheters are easily dislodged due to external impacts, affecting their use.

Method used

A clinical peritoneal dialysis positioner was designed, which adopts a catheter fixation structure with a clamp and spring. The clamp fixes the catheter through a bidirectional threaded rod and buffers the catheter under external force. Combined with the medical cotton in the wearing structure, it improves comfort and leakage prevention performance.

Benefits of technology

It achieves stable fixation of the catheter, prevents it from falling out, and cushions the catheter under external force, improving patient comfort and ease of use.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the technical field of nephrology department medical instruments, and particularly relates to a clinical peritoneal dialysis positioner which comprises a positioning plate, a first reserved hole is formed in the center of the positioning plate, a catheter fixing structure is arranged on any side of the positioning plate, and a wearing structure is arranged on the side, away from the catheter fixing structure, of the positioning plate. Through cooperative use of the clamping plates and the springs, when the catheter is collided or pulled by external force, the clamping plates at the positions of the second connecting plates can move under the action of the catheter and drive the second connecting plates to move together, so that the second connecting plates drive the connecting rods to move in the sleeves, and the bent positions of the catheter are straightened; and when the second connecting plate moves, the fourth connecting plate can be driven to move together, so that the spring is changed from a relaxed state to a stretched state, external force borne by the catheter is buffered, and the catheter is prevented from falling off.
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Description

Technical Field

[0001] This utility model belongs to the field of nephrology medical device technology, specifically relating to a clinical peritoneal dialysis positioner. Background Technology

[0002] Peritoneal dialysis is a dialysis method that uses the body's own peritoneum as a dialysis membrane. Dialysis fluid infused into the peritoneal cavity exchanges solutes and water with plasma components in the capillaries on the other side of the peritoneum, removing retained metabolic waste products and excess water from the body. Simultaneously, the dialysis fluid replenishes essential substances for the body. By continuously renewing the peritoneal dialysis fluid, the goal of renal replacement or supportive therapy is achieved. During peritoneal dialysis treatment, peritoneal dialysis fluid is infused into the peritoneal cavity through a peritoneal dialysis catheter. In clinical peritoneal dialysis, a locator is needed to fix the dialysis catheter. However, current peritoneal dialysis locators typically only use medical tape and fasteners to fix the catheter, resulting in poor fixation. When the catheter is subjected to external force, it is prone to dislodgement, affecting normal use.

[0003] To address the aforementioned issues, this application proposes a clinical peritoneal dialysis positioner. Utility Model Content

[0004] To address the problems mentioned in the background section, this invention provides a clinical peritoneal dialysis locator that can stably fix the catheter.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a clinical peritoneal dialysis locator, comprising a locating plate, wherein a first reserved hole is provided at the center of the locating plate, a catheter fixing structure is provided on any side of the locating plate, and a wearing structure is provided on the side of the locating plate away from the catheter fixing structure;

[0006] The catheter fixing structure includes symmetrically arranged fixing blocks, each of which is fixedly connected to a positioning plate. A first connecting plate is fixedly connected to the side of each fixing block away from the positioning plate. A sleeve is fixedly connected to the side of each first connecting plate away from the fixing block. A connecting rod is provided inside each sleeve. A second connecting plate is fixedly connected to the end of each connecting rod away from the first connecting plate. A third connecting plate is fixedly connected to the side of each of the first connecting plates away from each other. A fourth connecting plate is fixedly connected to the side of each of the second connecting plates away from each other. A spring is fixedly connected to the side of each fourth connecting plate close to the first connecting plate. The end of each spring away from the fourth connecting plate is fixedly connected to the adjacent third connecting plate. Clamping plates are symmetrically arranged between the second connecting plates and between the first connecting plates.

[0007] In a preferred embodiment of this invention, a first fixing plate is fixedly connected to both the first connecting plate and the second connecting plate. A bidirectional threaded rod is provided between the adjacent first fixing plates, and both ends of the bidirectional threaded rod are rotatably connected to the adjacent first fixing plate. A first threaded hole is provided on each clamping plate near the bidirectional threaded rod, and the clamping plate is threadedly connected to the adjacent bidirectional threaded rod through the first threaded hole. A first connecting hole is provided on any side of the first fixing plate, and a knob is provided on the side of the first fixing plate near the first connecting hole away from the bidirectional threaded rod. The knob is fixedly connected to the adjacent bidirectional threaded rod. A silicone block is fixedly connected to each clamping plate.

[0008] In a preferred embodiment of the clinical peritoneal dialysis positioning device of this utility model, the first connecting plate and the second connecting plate are both fixedly connected to the second fixing plate on the side away from the first fixing plate, and the clamping plates are provided with guide holes near the guide rods, and the guide rods are disposed in the nearby guide holes.

[0009] As a preferred embodiment of the clinical peritoneal dialysis positioning device of this utility model, the cannula is provided with a plurality of guide ports, and the connecting rod is fixedly connected to a guide block near the guide port, and the guide block is respectively disposed in the nearby guide port.

[0010] As a preferred embodiment of the clinical peritoneal dialysis positioning device of this utility model, the wearing structure includes an installation frame, which is fixedly connected to a positioning plate. Medical cotton is disposed within the installation frame, and a second reserved hole is provided near the first reserved hole of the medical cotton. Second connecting holes are provided at each of the four corners of the installation frame, and connecting grooves are provided at each of the four corners on the side of the installation frame near the positioning plate. Connecting posts are provided within each of the second connecting holes. A circular plate is fixedly connected to the end of each connecting post near the positioning plate, and the circular plates are respectively disposed within the adjacent connecting grooves. A threaded post is fixedly connected to the side of each circular plate away from the connecting post. A second threaded hole is provided near the threaded post on the positioning plate. A collar is fixedly connected to the end of each connecting post away from the circular plate, and a baffle is provided on the outer wall of each collar.

[0011] As a preferred embodiment of the clinical peritoneal dialysis positioning device of this utility model, the positioning plate is symmetrically fixedly connected with fixing buckles on the side away from the mounting frame, and each fixing buckle is equipped with an elastic fixing strap. The elastic fixing strap is provided with Velcro on the end away from the fixing buckle, and the Velcro on both sides is configured to cooperate with each other.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This application incorporates a catheter fixing structure, which utilizes the cooperation of a clamp and a spring. When the catheter is subjected to external force, the clamp at the second connecting plate position moves under the action of the catheter, causing the second connecting plate to move as well. This causes the second connecting plate to move the connecting rod within the sleeve, straightening the bent portion of the catheter. Furthermore, the movement of the second connecting plate also causes the fourth connecting plate to move, changing the spring from a relaxed state to a stretched state, thus buffering the external force on the catheter and preventing it from falling out. Simultaneously, a wearing structure is added. Medical cotton improves patient comfort during wear. In the event of dialysate leakage, the medical cotton absorbs the dialysate, preventing it from dripping unnecessarily. The medical cotton is also easily disassembled and replaced, improving convenience during use. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 In this utility model Figure 1 A schematic diagram of the first partial structure;

[0016] Figure 3 In this utility model Figure 2 A partial structural diagram;

[0017] Figure 4 In this utility model Figure 1 A schematic diagram of the second local structure;

[0018] Figure 5 In this utility model Figure 4 A partial structural diagram;

[0019] Figure 6 In this utility model Figure 5 A partial structural diagram;

[0020] In the picture:

[0021] 1. Positioning plate; 11. First reserved hole;

[0022] 2. Conduit fixing structure; 21. Fixing block; 22. First connecting plate; 23. Sleeve; 24. Connecting rod; 25. Second connecting plate; 26. Third connecting plate; 27. Fourth connecting plate; 28. Spring; 29. ​​Clamping plate; 210. Silicone block; 211. First threaded hole; 212. Guide hole; 213. First fixing plate; 214. First connecting hole; 215. Bidirectional threaded rod; 216. Knob; 217. Second fixing plate; 218. Guide rod; 219. Guide opening; 220. Guide block;

[0023] 3. Wearing structure; 31. Fixing buckle; 32. Elastic fixing strap; 33. Velcro; 34. Mounting frame; 35. Medical cotton; 36. Second reserved hole; 37. Second connecting hole; 38. Connecting groove; 39. Connecting post; 310. Round plate; 311. Threaded post; 312. Second threaded hole; 313. Collar; 314. Baffle. Detailed Implementation

[0024] 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.

[0025] Example 1

[0026] like Figures 1 to 6 As shown;

[0027] Based on the above:

[0028] In order to fix the catheter, this clinical peritoneal dialysis locator includes a positioning plate 1, a first reserved hole 11 is provided at the center of the positioning plate 1, a catheter fixing structure 2 is provided on any side of the positioning plate 1, and a wearing structure 3 is provided on the side of the positioning plate 1 away from the catheter fixing structure 2.

[0029] The catheter fixing structure 2 includes symmetrically arranged fixing blocks 21, each of which is fixedly connected to a positioning plate 1. A first connecting plate 22 is fixedly connected to the side of each fixing block 21 away from the positioning plate 1. A sleeve 23 is fixedly connected to the side of each first connecting plate 22 away from the fixing block 21. A connecting rod 24 is provided inside each sleeve 23. A second connecting plate 25 is fixedly connected to the end of each connecting rod 24 away from the first connecting plate 22. A third connecting plate 26 is fixedly connected to the side of each first connecting plate 22 away from each other. A fourth connecting plate 27 is fixedly connected to the side of each second connecting plate 25 away from each other. A spring 28 is fixedly connected to the side of each fourth connecting plate 27 closest to the first connecting plate 22. The end of each spring 28 away from the fourth connecting plate 27 is fixedly connected to the adjacent third connecting plate 26. The second connecting plates 25 are connected to the first connecting plate 22. Clamping plates 29 are symmetrically arranged between the two connecting plates 22 and 25. First fixing plates 213 are fixedly connected to the first connecting plate 22 and the second connecting plate 25. Bidirectional threaded rods 215 are arranged between the first fixing plates 213 that are close to each other. The two ends of the bidirectional threaded rods 215 are rotatably connected to the adjacent first fixing plates 213 respectively. First threaded holes 211 are provided on the clamping plates 29 near the bidirectional threaded rods 215. The clamping plates 29 are threadedly connected to the adjacent bidirectional threaded rods 215 through the first threaded holes 211. First connecting holes 214 are provided on the first fixing plates 213 on either side. Knobs 216 are provided on the side of the first fixing plates 213 that are close to the first connecting holes 214 away from the bidirectional threaded rods 215. Knobs 216 are fixedly connected to the adjacent bidirectional threaded rods 215 respectively. Silicone blocks 210 are fixedly connected to the clamping plates 29.

[0030] In this implementation scheme: First, the conduit is passed through the clamps 29 at the position of the second connecting plate 25, then through the clamps 29 at the position of the first connecting plate 22, and finally through the first pre-drilled hole 11. Next, a portion of the conduit is slightly bent between the first connecting plate 22 and the second connecting plate 25 to provide some length compensation. Then, by using two knobs 216, the bidirectional threaded rod 215 is rotated, causing the clamps 29 on both sides to move closer together and clamp the conduit securely. The silicone blocks 210 on the clamps 29 prevent damage to the conduit, thus completing the fixation of the conduit. When the conduit is subjected to an external force, the clamp 29 at the position of the second connecting plate 25 will move under the action of the conduit, and drive the second connecting plate 25 to move together, so that the second connecting plate 25 drives the connecting rod 24 to move inside the sleeve 23, straightening the bent part of the conduit. When the second connecting plate 25 moves, it will also drive the fourth connecting plate 27 to move together, so that the spring 28 changes from a relaxed state to a stretched state, buffering the external force on the conduit and preventing the conduit from falling off. When the conduit is no longer subjected to external force, the spring 28 will drive the second connecting plate 25 to reset, and the straightened conduit will return to the bent state for easy use.

[0031] Furthermore:

[0032] In an optional embodiment, the first connecting plate 22 and the second connecting plate 25 are both fixedly connected to the side away from the first fixing plate 213 by a second fixing plate 217, and the clamping plate 29 is provided with a guide hole 212 near the guide rod 218, and the guide rod 218 is disposed in the nearby guide hole 212.

[0033] In this embodiment: when the clamping plate 29 moves, it will move on the guide rod 218, thereby guiding the movement of the clamping plate 29, preventing it from deviating, and improving the stability of the clamping plate 29 in fixing the conduit.

[0034] Furthermore:

[0035] In an optional embodiment, each sleeve 23 is provided with a plurality of guide ports 219, and each connecting rod 24 is fixedly connected with a guide block 220 near the guide port 219. The guide blocks 220 are respectively disposed in the nearby guide ports 219.

[0036] In this embodiment: when the connecting rod 24 moves, the guide block 220 will move within the guide opening 219 to guide the connecting rod 24 and prevent the connecting rod 24 from disengaging from the sleeve 23.

[0037] Furthermore:

[0038] In an optional embodiment, the wearing structure 3 includes a mounting frame 34, which is fixedly connected to the positioning plate 1. A medical cotton 35 is disposed inside the mounting frame 34. A second reserved hole 36 is disposed near the first reserved hole 11 of the medical cotton 35. A second connecting hole 37 is disposed at each of the four corners of the mounting frame 34. A connecting groove 38 is disposed at each of the four corners of the mounting frame 34 near the positioning plate 1. A connecting post 39 is disposed in each of the second connecting holes 37. A circular plate 310 is fixedly connected to the end of the connecting post 39 near the positioning plate 1. The circular plate 310 is disposed in the adjacent connecting groove 38. A threaded post 311 is fixedly connected to the side of the circular plate 310 away from the connecting post 39. A second threaded hole 312 is disposed at the position of the positioning plate 1 near the threaded post 311. A collar 313 is fixedly connected to the end of the connecting post 39 away from the circular plate 310. A baffle 314 is disposed on the outer wall of the collar 313.

[0039] In this embodiment: after passing through the first reserved hole 11, the catheter will pass through the second reserved hole 36, allowing the medical cotton 35 to wrap around the catheter, thereby improving the patient's comfort when wearing it. In addition, when dialysate leakage occurs, the medical cotton 35 can also absorb the dialysate to prevent it from dripping randomly. After the positioner is used, the baffle 314 can be rotated to make the connecting post 39 rotate, so that the threaded post 311 disengages from the second threaded hole 312, and the baffle 314 no longer presses and blocks the medical cotton 35, making it convenient to disassemble and replace the medical cotton 35. Furthermore, the circular plate 310 can limit the connecting post 39 to prevent it from disengaging from the second connecting hole 37, improving the convenience of use.

[0040] Furthermore:

[0041] In an optional embodiment, the positioning plate 1 is symmetrically fixedly connected to a fixing buckle 31 on the side away from the mounting frame 34. Each fixing buckle 31 is equipped with an elastic fixing strap 32. Each end of the elastic fixing strap 32 away from the fixing buckle 31 is provided with a Velcro 33. The Velcro 33 on both sides are configured to cooperate with each other.

[0042] In this embodiment: After the catheter is fixed, the positioning plate 1 can be placed on the patient's abdomen, and then the elastic fixing straps 32 on both sides can be threaded from the patient's waist to the patient's back. Then, Velcro 33 can be used to connect the elastic fixing straps 32 on both sides to facilitate the patient to wear the positioning device.

[0043] The working principle and usage process of this utility model are as follows: First, the catheter is passed through the clamps 29 at the position of the second connecting plate 25, then through the clamps 29 at the position of the first connecting plate 22, and through the first reserved hole 11 and the second reserved hole 36, allowing the medical cotton 35 to wrap around the catheter. This improves the patient's comfort during wear. Furthermore, in case of dialysis fluid leakage, the medical cotton 35 can absorb the dialysis fluid and prevent it from dripping. Next, a portion of the catheter is slightly bent between the first connecting plate 22 and the second connecting plate 25 to provide some length compensation. Then, by using two knobs 216, the bidirectional threaded rod 215 is rotated, causing the clamps 29 on both sides to move closer together and clamp the catheter securely. The silicone blocks 210 on the clamps 29 prevent damage to the catheter, thus completing the catheter fixation. After fixing the catheter, the positioning plate 1 can be placed on the patient's abdomen, and then the elastic fixing straps 32 on both sides are threaded from the patient's waist to the patient's abdomen. At the back, Velcro 33 can then be used to connect the elastic fixing straps 32 on both sides, making it convenient for the patient to wear the positioner. When the catheter is subjected to external force, the clamp 29 at the position of the second connecting plate 25 will move under the action of the catheter, and drive the second connecting plate 25 to move together, so that the second connecting plate 25 drives the connecting rod 24 to move within the cannula 23, straightening the bent part of the catheter. When the second connecting plate 25 moves, it will also drive the fourth connecting plate 27 to move together, so that the spring 28 changes from a relaxed state to a tensile state. In the extended state, the spring 28 buffers the external force on the catheter. When the catheter is no longer subjected to external force, the spring 28 will drive the second connecting plate 25 to reset and return the straightened catheter to the bent state for easy use. After the positioner is used, the baffle 314 can be rotated to drive the connecting post 39 to rotate, so that the threaded post 311 disengages from the second threaded hole 312. This prevents the baffle 314 from pressing and blocking the medical cotton 35, making it easier to disassemble and replace the medical cotton 35 and improving the convenience of use.

[0044] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A clinical peritoneal dialysis positioning device, comprising a positioning plate (1), characterized in that: The positioning plate (1) has a first reserved hole (11) at its center, and a catheter fixing structure (2) is provided on any side of the positioning plate (1). A wearing structure (3) is provided on the side of the positioning plate (1) away from the catheter fixing structure (2). The catheter fixing structure (2) includes symmetrically arranged fixing blocks (21), each fixing block (21) being fixedly connected to a positioning plate (1). A first connecting plate (22) is fixedly connected to the side of each fixing block (21) away from the positioning plate (1). A sleeve (23) is fixedly connected to the side of each first connecting plate (22) away from the fixing block (21). A connecting rod (24) is provided inside each sleeve (23). A second connecting plate (25) is fixedly connected to the end of each connecting rod (24) away from the first connecting plate (22). A third connecting plate (26) is fixedly connected to each side of a connecting plate (22) that is far apart from each other. A fourth connecting plate (27) is fixedly connected to each side of a second connecting plate (25) that is far apart from each other. A spring (28) is fixedly connected to each side of the fourth connecting plate (27) that is close to the first connecting plate (22). The end of the spring (28) that is far away from the fourth connecting plate (27) is fixedly connected to the adjacent third connecting plate (26). Clamping plates (29) are symmetrically arranged between the second connecting plates (25) and between the first connecting plate (22).

2. The clinical peritoneal dialysis locator according to claim 1, characterized in that: First fixing plates (213) are fixedly connected to both the first connecting plate (22) and the second connecting plate (25). A bidirectional threaded rod (215) is provided between the first fixing plates (213) that are close to each other. The two ends of the bidirectional threaded rod (215) are rotatably connected to the adjacent first fixing plate (213). A first threaded hole (211) is provided on each clamping plate (29) near the bidirectional threaded rod (215). The clamping plate (29) is threadedly connected to the adjacent bidirectional threaded rod (215) through the first threaded hole (211). A first connecting hole (214) is provided on either side of the first fixing plate (213). A knob (216) is provided on the side of the first fixing plate (213) near the first connecting hole (214) away from the bidirectional threaded rod (215). The knob (216) is fixedly connected to the adjacent bidirectional threaded rod (215). A silicone block (210) is fixedly connected to each clamping plate (29).

3. A clinical peritoneal dialysis locator according to claim 2, characterized in that: The first connecting plate (22) and the second connecting plate (25) are both fixedly connected to the second fixing plate (217) on the side away from the first fixing plate (213). The clamping plate (29) is provided with a guide hole (212) near the guide rod (218). The guide rod (218) is located in the nearby guide hole (212).

4. A clinical peritoneal dialysis locator according to claim 1, characterized in that: Each sleeve (23) is provided with a number of guide ports (219), and each connecting rod (24) is fixedly connected with a guide block (220) near the guide port (219). The guide blocks (220) are respectively set in the guide ports (219) that are close to each other.

5. A clinical peritoneal dialysis locator according to claim 1, characterized in that: The wearing structure (3) includes a mounting frame (34), which is fixedly connected to the positioning plate (1). Medical cotton (35) is placed inside the mounting frame (34). A second reserved hole (36) is provided near the first reserved hole (11) of the medical cotton (35). Second connecting holes (37) are provided at each of the four corners of the mounting frame (34). Connecting grooves (38) are provided at each of the four corners on the side of the mounting frame (34) near the positioning plate (1). Connecting posts (39) are provided inside each of the second connecting holes (37). Each of the connecting posts (39) is fixedly connected to a circular plate (310) at one end near the positioning plate (1). The circular plates (310) are respectively set in the connecting grooves (38) near the connecting posts (39). Each of the circular plates (310) is fixedly connected to a threaded post (311) on the side away from the connecting posts (39). Each of the positioning plates (1) is provided with a second threaded hole (312) near the threaded post (311). Each of the connecting posts (39) is fixedly connected to a collar (313) at one end away from the circular plate (310). Each of the collars (313) is provided with a baffle (314) on its outer wall.

6. A clinical peritoneal dialysis locator according to claim 5, characterized in that: The positioning plate (1) is symmetrically fixedly connected to a fixing buckle (31) on the side away from the mounting frame (34). Each fixing buckle (31) is equipped with an elastic fixing band (32). Each end of the elastic fixing band (32) away from the fixing buckle (31) is provided with a Velcro (33). The Velcro (33) on both sides are configured to cooperate with each other.