Anti-drifting peritoneal dialysis pipeline convenient to fix

Abstract

The invention discloses an anti-drifting peritoneal dialysis pipeline convenient to fix, relates to the technical field of peritoneal dialysis pipelines, and aims to solve the technical problems that a polyester sleeve is insufficient in fixing and anti-traction capacity, and a catheter is prone to shifting and even falling off due to accidental pulling. Comprising a fixing bellyband surrounding the waist and belly, a first dialysis tube arranged at a subcutaneous tunnel section, a fixing mechanism and an auxiliary mechanism. According to the invention, the compressible elastic anchor wing is in a dry and compressed state in the implantation process, rapidly absorbs tissue fluid after implantation to generate hydration expansion and recover an outward expansion form, and is matched with micron-sized pyramid-shaped textures on the surface of the micro-texture biological anchoring area to provide an ideal scaffold for fibroblast attachment and collagen deposition; the catheter can be mechanically interlocked with surrounding abdominal wall fascia and subcutaneous fiber adipose tissue, the initial subcutaneous stability of the dialysis catheter is guaranteed, and the problems that a polyester sleeve is insufficient in fixing and anti-traction capacity, and the catheter is prone to displacement and even disengagement due to accidental pulling are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of peritoneal dialysis pipeline, more particularly, to a peritoneal dialysis pipeline with fixed and anti-drifting function. BACKGROUND

[0002] Uremia is a very serious kidney disease, in the treatment of uremia, peritoneal dialysis is a commonly used and effective way, it uses the body's own peritoneum as a semi-permeable membrane to remove water and toxins, the removal efficiency is high, the effect time is long, and the influence on other organs and systems of the patient is small, and the function of the residual kidney is not damaged. In addition to having an ideal therapeutic effect, peritoneal dialysis has strong economy, and is convenient to operate, can be performed at home, the combination of various advantages makes the development and popularization of peritoneal dialysis very fast, it is used by many uremia patients as a kidney replacement therapy.

[0003] The principle of peritoneal dialysis surgery is simply to place the peritoneal dialysis tube to the bottom of the patient's abdominal cavity, which has an impact on the patient's recovery. Specifically, a dacron sleeve is arranged at the outlet of the dialysis catheter near the subcutaneous tunnel, after the catheter is implanted in the human body, with the passage of time, the human tissue will gradually grow into the fiber gap of the dacron sleeve, and the fixation of the catheter is realized by relying on the wrapping and adhesion of the tissue, so that the catheter remains relatively stable in the subcutaneous state. In the patient's daily activities, such as accidental pulling caused by accidental turning over, getting up or stretching the limbs, it is also a hidden danger for the dacron sleeve fixed dialysis pipeline.

[0004] When subjected to a small accidental pull, due to the initial stability of the dacron sleeve fixation is not very strong, a certain degree of displacement may occur, which in turn causes the skin at the outlet to be pulled, which is easy to cause discomfort of the skin at the outlet, and even minor trauma such as skin breakage and redness. When subjected to a large pulling force or a long duration, the fixing force provided by the dacron sleeve may not be enough to resist the external force, and it is indeed possible to cause the catheter to be pulled out directly. Once the catheter is pulled out, the dialysis treatment must be interrupted, and the previous dialysis effect will be wasted, and the medical staff needs to re-operate the catheterization for the patient, which undoubtedly will cause secondary damage to the patient's body, disrupt the normal plan of the dialysis treatment, and make the treatment process become complex and rough, which will have a great negative impact on the patient's recovery and quality of life. In view of this, we propose a peritoneal dialysis pipeline with fixed and anti-drifting function. SUMMARY

[0005] The present application aims to overcome the shortcomings of the prior art, adapt to the actual needs, and provide a peritoneal dialysis pipeline with fixed and anti-drifting function to solve the technical problem of insufficient anti-pulling ability of the dacron sleeve fixation, which is easy to cause displacement or even dislocation of the catheter due to accidental pulling.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a peritoneal dialysis tubing that is easy to fix and prevents drift, comprising a fixation belt around the waist and abdomen, a first dialysis tubing arranged in a subcutaneous tunnel section, a fixation mechanism, and an auxiliary mechanism. The fixation belt has Velcro A and Velcro B sides that can be fastened to each other fixedly installed at both ends. The tail of the first dialysis tubing is connected to a second dialysis tubing that extends into the peritoneal cavity. The fixation mechanism includes a compressible elastic anchor wing and a micro-textured bio-anchoring area. The compressible elastic anchor wing is fixedly installed around the first dialysis tubing, and the micro-textured bio-anchoring area is fixedly installed on both sides of the compressible elastic anchor wing. The micro-textured bio-anchoring area has a micron-level pyramidal texture structure. The auxiliary mechanism includes an arc-shaped guide plate and elastic barbs. The arc-shaped guide plate is fixedly installed inside the inlet port on the front of the fixation belt, and the elastic barbs are located on the outer arc surface of the arc-shaped guide plate. The auxiliary mechanism receives and fixes the portion of the extracorporeal tubing led out by the fixation mechanism through the inlet port and the arc-shaped guide plate.

[0007] Preferably, the fixing mechanism further includes dialysis holes, which are spirally distributed around the body of the second dialysis tube. A smooth counterweight head is fixedly installed at the tail end of the second dialysis tube, and an extracorporeal spiral tube is fixedly installed at the head end of the first dialysis tube. An extracorporeal spiral tube has a spiral cavity inside, and an elastic metal wire is fixedly installed inside the spiral cavity.

[0008] Preferably, the auxiliary mechanism further includes an outlet protection compartment, which is located on the outside of the inlet. A cover plate is fixedly installed on the front of the outlet protection compartment, a protective frame is fixedly installed on the outside of the outlet protection compartment, and a fixing head is fixedly installed on the inside of the protective frame.

[0009] Preferably, the counterweight head uses gravity to stabilize the catheter tip at the lowest position in the pelvic cavity.

[0010] Preferably, the compressible elastic anchor wing is in a compressed state when dry, and hydrates and expands outward after absorbing tissue fluid, with its edges being rounded and smooth.

[0011] Preferably, the external spiral tube has elongation characteristics through its internal spiral cavity and elastic metal wire.

[0012] Preferably, a connector is fixedly installed at the end of the extracorporeal spiral tube away from the first dialysis tube, and the protective frame limits and fixes the connector by means of a fixing head.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention utilizes a compressible elastic anchor wing that remains dry and compressed during implantation, ensuring smooth insertion. After implantation, it rapidly absorbs tissue fluid, hydrates and expands, restoring its outward-expanding shape. Combined with the micron-level pyramidal texture on the surface of the microtextured bio-anchoring zone, it enables tissue to grow uniformly and rapidly from all directions into the microtexture, forming a robust, three-dimensional, non-directional bio-lock structure. The fixation effect far surpasses that of anisotropic designs, providing an ideal scaffold for fibroblast attachment and collagen deposition. It can form a mechanical interlock with the surrounding abdominal wall fascia and subcutaneous fibro-adipose tissue, providing initial tensile strength far exceeding that of traditional polyester sleeves. This ensures the initial stability of the dialysis tubing under the skin and solves the problem of insufficient tensile strength of polyester sleeves, which can easily lead to catheter displacement or even dislodgement due to accidental pulling.

[0014] 2. This invention also utilizes the internal spiral cavity and elastic metal wire of the extracorporeal spiral tube to give it elongation properties. When pulled, it can elongate to absorb energy and automatically return to its original shape after the external force disappears. Combined with the effect of the abdominal binder in dispersing the pulling force and the protective effect of the in vivo biological anchoring system, it greatly reduces the risk of outlet trauma or removal of the first dialysis tube due to accidental traction. It comprehensively ensures the safety of the entire peritoneal dialysis tubing during use and reduces the adverse effects caused by accidental traction.

[0015] 3. This invention also uses the inlet and arc-shaped guide plate to receive and fix the external tubing portion led out by the fixing mechanism. The elastic barbs on the outer side of the arc-shaped guide plate provide a secondary fixation of the external spiral tube, ensuring the external tubing portion is stably fixed in a suitable position and preventing unauthorized movement, further guaranteeing the stability of the entire dialysis tubing. Simultaneously, the outlet protection compartment and protective frame at the outlet can limit and fix the external spiral tube and connectors when not in use, facilitating tubing storage and protection. When in use, they can be easily removed for connection operations, improving ease of use and the protection of the tubing. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the external structure of the present invention; Figure 2 This is a schematic diagram of the external structure of the first dialysis tube and the second dialysis tube of the present invention; Figure 3 This is a schematic diagram of the external structure of the first dialysis tube of the present invention; Figure 4 This is a schematic diagram of the compressible elastic anchor wing and its related structures according to the present invention; Figure 5 For the present invention Figure 4 Enlarged schematic diagram of the structure at point A in the middle; Figure 6 This is a schematic diagram of the second dialysis tube and its related structures according to the present invention; Figure 7 This is a schematic diagram of the external spiral tube and related structures of the present invention; Figure 8 This is a schematic diagram of the external structure of the auxiliary mechanism of the present invention; Figure 9 For the present invention Figure 8 Enlarged schematic diagram of the structure at point B; Figure 10 This is a schematic diagram of the external structure of the export protection compartment of the present invention; Figure 11 This is a schematic diagram of one usage state of the present invention.

[0017] The following are the labels in the diagram: 1. Abdominal binder; 11. Velcro A side; 12. Velcro B side; 2. First dialysis tube; 3. Second dialysis tube; 4. Fixing mechanism; 41. Compressible elastic anchor wing; 42. Microtextured bio-anchoring zone; 43. Dialysis port; 44. Counterweight head; 45. Extracorporeal spiral tube; 451. Spiral cavity; 46. Elastic metal wire; 5. Auxiliary mechanism; 51. Inlet; 52. Arc-shaped guide plate; 53. Elastic barbs; 54. Outlet protection chamber; 541. Cover plate; 55. Protective frame; 551. Fixing head; 6. Connecting head; 7. Abdominal fluid bag; 8. Waste fluid bag. Detailed Implementation

[0018] Example: Figures 1 to 11As shown, the present invention relates to a peritoneal dialysis tubing with easy fixation and anti-drift design, comprising a fixation belt 1 encircling the waist and abdomen, a first dialysis tube 2 arranged in a subcutaneous tunnel section, a fixation mechanism 4, and an auxiliary mechanism 5. The fixation belt 1 has Velcro A-side 11 and Velcro B-side 12 fixedly installed at both ends, which can be adhered to each other. The tail of the first dialysis tube 2 is connected to a second dialysis tube 3 extending into the peritoneal cavity. The fixation mechanism 4 includes a compressible elastic anchor wing 41 and a micro-textured bio-anchoring area 42. The compressible elastic anchor wing 41 is fixedly installed around the first dialysis tube 2. In a dry state, the compressible elastic anchor wing 41 is in a compressed state; after absorbing tissue fluid, it hydrates, expands, and opens outwards, with rounded and smooth edges. The micro-textured bio-anchoring area 42 is fixedly installed on both sides of the compressible elastic anchor wing 41, and the micro-textured bio-anchoring area 42 has a micron-level pyramidal texture structure. The auxiliary mechanism 5 includes an arc-shaped guide plate 52 and elastic barbs 53. The arc-shaped guide plate 52 is fixedly installed inside the inlet 51 opened on the front of the fixation belt 1. Elastic barbs 53 are set on the outer arc surface of the arc-shaped guide plate 52. The auxiliary mechanism 5 receives and fixes the external tubing part led out by the fixing mechanism 4 through the inlet 51 and the arc-shaped guide plate 52. The compressible elastic anchor wing 41 of this invention is in a dry and tight state during the implantation process, which can ensure smooth implantation. After implantation, it quickly absorbs tissue fluid and undergoes hydration and expansion, restoring its outward expansion shape. Combined with the micron-level pyramid-shaped texture on the surface of the microtextured bio-anchoring area 42, it can enable tissue to grow into the microtexture uniformly and quickly from all directions, forming a firm, three-dimensional, non-directional bio-lock structure. The fixation effect is far superior to anisotropic designs, providing an ideal scaffold for fibroblast attachment and collagen deposition. It can form a mechanical interlock with the surrounding abdominal wall fascia and subcutaneous fibro-adipose tissue, providing an initial tensile strength far exceeding that of traditional polyester sleeves, ensuring the initial stability of the dialysis tubing under the skin, and solving the problem of insufficient anti-tense capacity of polyester sleeves, which can easily lead to catheter displacement or even dislodgement due to accidental pulling.

[0019] Furthermore, such as Figures 2 to 7As shown, the fixing mechanism 4 also includes dialysis holes 43, which are spirally distributed around the body of the second dialysis tube 3. A smooth counterweight head 44 is fixedly installed at the tail end of the second dialysis tube 3. The counterweight head 44 uses gravity to stabilize the catheter tip at the lowest position in the pelvic cavity. An extracorporeal spiral tube 45 is fixedly installed at the head end of the first dialysis tube 2. An extracorporeal spiral tube 45 has a spiral cavity 451 inside, and an elastic metal wire 46 is fixedly installed inside the spiral cavity 451. The extracorporeal spiral tube 45 has elongation characteristics through its internal spiral cavity 451 and elastic metal wire 46. The end of the extracorporeal spiral tube 45 away from the first dialysis tube 2 The connector 6 is fixedly installed, and the protective frame 55 limits and fixes the connector 6 through the fixing head 551. Through the internal spiral cavity 451 and elastic metal wire 46 of the external spiral tube 45, it has the property of being stretchable. When pulled, it can stretch to absorb energy and automatically return to its original shape after the external force is removed. Combined with the effect of the fixed abdominal band 1 in dispersing the pulling force and the protective effect of the internal biological anchoring system, the risk of outlet injury or pull-out of the first dialysis tube 2 caused by accidental traction is greatly reduced. The safety of the entire peritoneal dialysis tubing is fully guaranteed during use, and the adverse effects caused by accidental traction are reduced.

[0020] Furthermore, such as Figures 8 to 10 As shown, the auxiliary mechanism 5 also includes an outlet protection chamber 54, which is located outside the inlet 51. A cover plate 541 is fixedly installed on the front of the outlet protection chamber 54, and a protective frame 55 is fixedly installed on the outside of the outlet protection chamber 54. A fixing head 551 is fixedly installed on the inside of the protective frame 55. The external tubing portion led out by the fixing mechanism 4 is received and fixed through the inlet 51 and the arc-shaped guide plate 52. The elastic barbs 53 on the outside of the arc-shaped guide plate 52 can perform a secondary fixing operation on the external spiral tube 45, so that the external tubing portion can be stably fixed in a suitable position, preventing it from moving randomly, and further ensuring the stability of the entire dialysis tubing. At the same time, the outlet protection chamber 54, protective frame 55 and other structures at the outlet can limit and fix the external spiral tube 45 and the connector 6 when not in use, which is convenient for storage and protection of the tubing. When in use, they can be easily taken out for connection operations, improving the convenience of use and the protection of the tubing.

[0021] Working principle: This embodiment provides a peritoneal dialysis tubing that is easy to fix and prevents drift. During use, when the first dialysis tubing 2 and the second dialysis tubing 3 are implanted into the peritoneal cavity, the second dialysis tubing 3 is inserted deep into the peritoneal cavity. At this time, the first dialysis tubing 2 is located subcutaneously, and the compressible elastic anchor wing 41 is in a dry and tight state to ensure smooth implantation. After implantation, the compressible elastic anchor wing 41 quickly absorbs tissue fluid and hydrates and expands, restoring its preset shape of opening outward at about 30-45 degrees. The opened compressible elastic anchor wing 41 has rounded and smooth edges, which immediately form a mechanical interlock with the surrounding abdominal wall fascia and subcutaneous fibrofatty tissue, providing an initial tensile strength far exceeding that of traditional polyester sleeves, fundamentally eliminating the risk of early postoperative displacement.

[0022] At this point, the microtextured bio-anchoring zone 42 on the surface of the first dialysis catheter 2 in the entire subcutaneous tunnel section begins to function. Its micron-level pyramidal texture allows tissue to grow uniformly and rapidly from all directions into the microtexture, forming an incredibly strong, three-dimensional, non-directional bio-locking structure. This fixation effect far surpasses that of anisotropic designs, providing an ideal scaffold for fibroblast attachment and collagen deposition. This structure greatly accelerates and enhances the tissue ingrowth process, typically achieving biofusion between the catheter and human tissue within 4-6 weeks, forming an extremely strong seal and fixation. This not only provides long-term tensile strength but also effectively seals potential cavities between the subcutaneous tunnel section and the first dialysis catheter 2, preventing infection and exudation.

[0023] The counterweight head 44 at the end of the second dialysis catheter 3 located inside the peritoneum has a smooth surface treatment, making it difficult for the omentum or intestine to capture it in the peritoneal fluid. The dialysis holes 43 distributed around the second dialysis catheter 3 are spirally distributed, causing the dialysate to flow in or out in a vortex-like, low-speed, diffuse manner, eliminating the local negative pressure suction cup effect generated by the jet at the end hole, and preventing adsorption from the perspective of fluid mechanics. The counterweight head 44 uses gravity to naturally stabilize the catheter tip at the lowest position in the pelvic cavity, achieving physiological positioning.

[0024] Move the inlet 51 on the front of the abdominal binder 1 upward from the bottom of the external spiral tube 45, so that the arc-shaped guide plate 52 guides the external spiral tube 45, and use the elastic barbs 53 on the outside of the arc-shaped guide plate 52 to perform a secondary fixation operation on the external spiral tube 45.

[0025] When not in use, place the external spiral tube 45 inside the outlet protection chamber 54 and secure it with the cover plate 541. Place the connector 6 inside the protective frame 55 and secure it with the fixing head 551 to prevent it from moving.

[0026] When in use, remove it and connect the peritoneal fluid bag 7 and the waste fluid bag 8 using the connector 6.

[0027] When pulled, the external spiral tube 45 firstly extends to absorb energy, and automatically returns to its original shape after the external force disappears. Secondly, the pulling force is transmitted to the entire fixed abdominal band 1 through the elastic barbs 53 and the arc-shaped guide plate 52, and is distributed to the entire waist and abdomen by its large area of ​​elastic fabric, avoiding the force being concentrated on the fragile skin at the exit. Finally, the internal bio-anchoring system acts as the final line of defense, greatly reducing the risk of accidental traction causing exit trauma or the removal of the first dialysis tube 2.

[0028] The embodiments disclosed in this invention are preferred embodiments, but are not limited thereto. Those skilled in the art can easily understand the spirit of this invention based on the above embodiments and make different extensions and variations, but as long as they do not depart from the spirit of this invention, they are all within the protection scope of this invention.

Claims

1. A peritoneal dialysis tubing that is easy to fix and prevents drift, characterized in that, include, A fixed abdominal band (1) that wraps around the waist and abdomen, wherein the fixed abdominal band (1) is fixedly installed with Velcro A side (11) and Velcro B side (12) at both ends. A first dialysis tube (2) is placed in the subcutaneous tunnel section, and a second dialysis tube (3) is connected to the tail end of the first dialysis tube (2) and extends into the abdominal cavity. The fixing mechanism (4) includes a compressible elastic anchor wing (41) and a microtextured bio-anchoring area (42). The compressible elastic anchor wing (41) is fixedly installed on the periphery of the first dialysis tube (2), and the microtextured bio-anchoring area (42) is fixedly installed on both sides of the compressible elastic anchor wing (41). The microtextured bio-anchoring area (42) is a micron-level pyramid-shaped texture structure. The auxiliary mechanism (5) includes an arc-shaped guide plate (52) and an elastic barb (53). The arc-shaped guide plate (52) is fixedly installed inside the inlet (51) opened on the front of the fixed abdominal belt (1), and the elastic barb (53) is provided on the outer arc surface of the arc-shaped guide plate (52). The auxiliary mechanism (5) receives and fixes the external pipeline portion led out by the fixing mechanism (4) through the inlet (51) and the arc-shaped guide plate (52).

2. The peritoneal dialysis tubing with easy fixation and anti-drift design according to claim 1, characterized in that, The fixing mechanism (4) also includes a dialysis port (43), which is spirally distributed around the body of the second dialysis tube (3). A smooth counterweight head (44) is fixedly installed at the tail end of the second dialysis tube (3). An extracorporeal spiral tube (45) is fixedly installed at the first end of the first dialysis tube (2). A spiral cavity (451) is opened inside the extracorporeal spiral tube (45), and an elastic metal wire (46) is fixedly installed inside the spiral cavity (451).

3. The peritoneal dialysis tubing with easy fixation and anti-drift design according to claim 2, characterized in that, The auxiliary mechanism (5) also includes an outlet protection chamber (54), which is located on the outside of the inlet (51). A cover plate (541) is fixedly installed on the front of the outlet protection chamber (54), and a protective frame (55) is fixedly installed on the outside of the outlet protection chamber (54). A fixing head (551) is fixedly installed on the inside of the protective frame (55).

4. The peritoneal dialysis tubing with easy fixation and anti-drift design according to claim 3, characterized in that, The counterweight (44) uses gravity to stabilize the catheter tip at the lowest position in the pelvic cavity.

5. A peritoneal dialysis tubing with easy fixation and anti-drift design according to claim 3, characterized in that, The compressible elastic anchor wing (41) is in a compressed state when dry, and expands outward after absorbing tissue fluid, with its edges being rounded and smooth.

6. The peritoneal dialysis tubing with easy fixation and anti-drift design according to claim 3, characterized in that, The external spiral tube (45) has elongation characteristics through its internal spiral cavity (451) and elastic metal wire (46).

7. A peritoneal dialysis tubing with easy fixation and anti-drift design according to claim 3, characterized in that, The end of the extracorporeal spiral tube (45) away from the first dialysis tube (2) is fixedly equipped with a connector (6), and the protective frame (55) limits and fixes the connector (6) through the fixing head (551).

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