Peritoneal dialysis catheter and peritoneal dialysis assembly

Abstract

The utility model provides a peritoneal dialysis catheter and a peritoneal dialysis assembly, and the peritoneal dialysis catheter comprises a catheter body, an antibacterial coating and a textured layer, wherein the antibacterial coating is arranged on the inner wall of the pipe body, and the textured layer is arranged on the surface of the antibacterial coating in the direction away from the inner wall. The antibacterial coating is arranged on the inner wall of the peritoneal dialysis catheter, bacteria can be prevented from being attached to the inner wall of the catheter to form a biological membrane, meanwhile, the textured layer is arranged on the surface of the antibacterial coating, rough textures increase the rupture chance of microorganisms in the collision process, attachment of the bacteria to the inner wall is further reduced, and formation of the biological membrane is inhibited; the antibacterial coating and the textured layer jointly inhibit bacteria from being attached to the inner wall of the catheter to form a biological membrane.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an abdominal dialysis catheter. Background Technology

[0002] Currently, the peritoneal dialysis catheter commonly used in clinical practice is a smooth silicone tube, which can easily lead to peritonitis in peritoneal dialysis patients.

[0003] When peritonitis occurs, bacteria in the abdominal cavity can easily adhere to the inner wall of the peritoneal dialysis catheter, forming a biofilm, leading to recurrent and persistent peritonitis that can progress to refractory peritonitis. Long-term antibiotic use in peritoneal dialysis patients can lead to the emergence of drug-resistant bacteria, dysbiosis, and the development of opportunistic pathogens. Recurrent peritonitis and persistent abdominal inflammation can damage the peritoneum, causing patients to have their catheters removed and potentially threatening their lives.

[0004] Therefore, there is a lack of existing technologies for a catheter that can eliminate the biofilm on the inner wall of the peritoneal dialysis catheter. Utility Model Content

[0005] One of the technical problems that this invention aims to solve is that biofilms easily form on the inner wall of current peritoneal dialysis catheters.

[0006] To address the aforementioned technical problems, this utility model provides a peritoneal dialysis catheter and peritoneal dialysis assembly, including a catheter body. The peritoneal dialysis catheter further includes an antibacterial coating and a textured layer.

[0007] The antibacterial coating is applied to the inner wall of the tube, and the textured layer is applied to the surface of the antibacterial coating in a direction away from the inner wall.

[0008] In some embodiments, the thickness of the textured layer is no greater than the thickness of the antibacterial coating.

[0009] In some embodiments, the antimicrobial coating includes at least one of an antimicrobial coating, a hydrogel coating, and an antibiotic coating.

[0010] In some embodiments, the antimicrobial coating is a silver ion coating.

[0011] In some embodiments, the thickness of the textured layer is between 0.8 and 1.2 mm.

[0012] In some embodiments, the texturing layer includes at least one of a superhydrophobic texture and a nanocone texture.

[0013] In some embodiments, the texturing layer applies texture using a laser.

[0014] This utility model embodiment also provides an peritoneal dialysis assembly, which includes the peritoneal dialysis catheter as described in any of the preceding claims.

[0015] In some embodiments, the peritoneal dialysis assembly further includes a titanium connector, an external short tube, and a dual-connection system. One end of the titanium connector is used to connect to the peritoneal cavity through the peritoneal dialysis catheter, and the other end of the titanium connector is connected to the interface of the dual-connection system through the external short tube.

[0016] The antibacterial coating is applied to the inner wall of the outer short pipe, and the textured layer is applied to the surface of the antibacterial coating along a direction away from the inner wall of the outer short pipe.

[0017] Through the above technical solution, the peritoneal dialysis catheter provided by this utility model has an antibacterial coating on its inner wall, which can inhibit bacteria from attaching to the inner wall of the catheter and forming a biofilm. At the same time, a textured layer is provided on the surface of the antibacterial coating. The rough texture increases the chance of microorganisms breaking when impacted, further reducing the adhesion of bacteria to the inner wall and inhibiting the formation of biofilm. The antibacterial coating and the textured layer together inhibit bacteria from attaching to the inner wall of the catheter and forming a biofilm. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the peritoneal dialysis assembly according to an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the longitudinal section of the peritoneal dialysis catheter according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the cross-section of the peritoneal dialysis catheter according to an embodiment of the present invention;

[0022] Figure 4 This is a partially enlarged structural diagram of the longitudinal section of the peritoneal dialysis catheter according to an embodiment of the present invention.

[0023] Explanation of reference numerals in the attached figures

[0024] 1. Peritoneal dialysis catheter; 11. Inner wall; 12. Outer wall; 2. Antibacterial coating; 21. Antibacterial component; 3. Textured layer; 4. Extraperitoneal segment; 5. Abdominal wall segment; 6. Intraperitoneal segment; 7. Microorganisms; 8. Peritoneal dialysis assembly; 80. Titanium connector; 81. External short tube; 82. Dual-connection system. Detailed Implementation

[0025] The embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are used to exemplarily illustrate the principles of this utility model, but should not be used to limit the scope of this utility model. This utility model can be implemented in many different forms and is not limited to the specific embodiments of the utility model described herein, but includes all technical solutions falling within the scope of the claims.

[0026] These embodiments are provided to make the present invention thorough and complete, and to fully express the scope of the present invention to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, material composition, numerical expressions, and values ​​set forth in these embodiments should be interpreted as merely exemplary and not as limiting.

[0027] It should be noted that, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationships, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0028] Furthermore, the terms "first," "second," and similar words used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. "Vertical" is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range. Words such as "including" or "comprising" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well.

[0029] It should also be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model depending on the specific circumstances. When a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or second device.

[0030] All terms used in this invention have the same meaning as understood by one of ordinary skill in the art to which this invention pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as idealized or highly formalized, unless expressly defined herein.

[0031] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0032] This utility model embodiment provides an peritoneal dialysis catheter 1, such as Figures 1-4 As shown, the peritoneal dialysis catheter 1 includes a tube body, an antibacterial coating 2, and a textured layer 3. The tube body includes an inner wall 11 and an outer wall 12. The antibacterial coating 2 is disposed on the inner wall 11 of the tube body, and the textured layer 3 is disposed on the surface of the antibacterial coating 2 in a direction away from the inner wall 11.

[0033] The tubing body is the main part of the peritoneal dialysis catheter 1, used to deliver fluid through the abdomen for dialysis and other treatments; the inner wall 11 of the tubing body is provided with an antibacterial coating 2, which contains a large number of antibacterial components 21, such as... Figure 4 As shown, the antibacterial coating 2 can inhibit the adhesion of bacteria and microorganisms 7 to the inner wall 11 of the catheter to form a biofilm, effectively inhibiting the growth and reproduction of bacteria, thereby ensuring the safety and reliability of the peritoneal dialysis process. At the same time, the textured layer 3 set on the surface of the antibacterial coating 2 increases the chance of microorganisms 7 breaking upon impact, further reducing the adhesion of bacteria to the inner wall 11 and inhibiting the formation of biofilm. The antibacterial coating 2 and the textured layer 3 together inhibit the adhesion of bacteria to the inner wall 11 of the catheter to form a biofilm, preventing the recurrence of peritonitis.

[0034] In this embodiment, the inner wall 11 of the tube can be a smooth plane or any other form of rough structure to facilitate dialysis operations for the patient. Meanwhile, the antibacterial coating 2 and the textured layer 3 of this product can also be prepared using different materials and techniques to ensure good performance and reliability.

[0035] In some embodiments, the thickness of the textured layer 3 is no greater than the thickness of the antibacterial coating 2. Excessive thickness of the textured layer 3 can affect the effectiveness of the peritoneal dialysis catheter 1; if the textured layer 3 is too thick, it may affect the patency and lifespan of the peritoneal dialysis catheter 1.

[0036] In some embodiments, the antimicrobial coating 2 includes at least one of an antimicrobial 7 coating, a hydrogel coating, and an antibiotic coating. By adding an antimicrobial 7 coating or an antibiotic coating, the growth and reproduction of bacteria and pathogens can be effectively killed or inhibited, reducing the risk of peritoneal infection. Adding a hydrogel coating can increase the humidity and temperature inside the peritoneal dialysis catheter 1, which helps maintain the physiological state of the peritoneum and reduces peritoneal damage and inflammatory reactions.

[0037] In some embodiments, the antimicrobial coating 7 is a silver ion coating. The silver ion coating can effectively kill various types of microorganisms 7, including bacteria, fungi, viruses, and spirochetes, exhibiting broad-spectrum antibacterial properties. Furthermore, the silver ion coating can continuously release silver ions into the environment, forming a persistent protective film that maintains the coating's antibacterial properties for a long time, thereby improving the antibacterial performance and lifespan of the peritoneal dialysis catheter 1. Silver ions are a natural disinfectant, non-toxic to humans, and do not produce harmful substances; therefore, the silver ion coating is a safe antimicrobial coating material 2.

[0038] In some embodiments, the peritoneal dialysis catheter 1 can be selected with appropriate outer and inner diameters according to the physical conditions and needs of different patients, thereby ensuring the comfort and safety of patients during peritoneal dialysis treatment; both the outer and inner diameters are within a reasonable range, which facilitates operation and installation by doctors.

[0039] In some embodiments, the thickness of the textured layer 3 is between 0.8 and 1.2 mm. The thickness of the textured layer 3 is moderate, neither too thin to cause excessive friction nor too thick to affect the flow of fluid during peritoneal dialysis.

[0040] In some embodiments, the textured layer 3 includes superhydrophobic textures and nanocone textures. These textured layers 3, encompassing both superhydrophobic and nanocone forms, offer strong adaptability and flexibility, providing different functions and performances for the peritoneal dialysis catheter 1 to suit different patient types. Appropriate textured layers 3 can be selected based on different clinical needs and environmental conditions to achieve optimal peritoneal dialysis results.

[0041] In some embodiments, the textured layer 3 is textured by laser application. The laser can act directly on the catheter surface to etch specific texture patterns as needed. This makes the design of the textured layer 3 more flexible and diverse, allowing its structure and shape to be adjusted according to the patient's individual needs and treatment objectives, thus expanding its applicability. Laser-applied textures can achieve high-precision texture etching with a resolution reaching the micrometer or even sub-micrometer level, ensuring that each area is processed uniformly and improving the quality and stability of the textured layer 3.

[0042] This embodiment of the utility model also provides an abdominal dialysis component 8, such as... Figure 1As shown, the peritoneal dialysis assembly 8 includes the peritoneal dialysis catheter 1 as described above. The peritoneal dialysis assembly 8 also includes a connector assembly, peritoneal dialysis fluid, and peritoneal dialysis drain fluid. The connector assembly connects the peritoneal dialysis fluid and peritoneal dialysis drain fluid to the peritoneal cavity in the body when needed and can disconnect them when not needed. For example... Figure 2 As shown, the peritoneal dialysis catheter 1 includes an extraperitoneal segment 4, an abdominal wall segment 5, and an intraperitoneal segment 6. The extraperitoneal segment 4 is located outside the peritoneal cavity, the abdominal wall segment 5 is located between the inner and outer walls of the peritoneal cavity, and the intraperitoneal segment 6 is located between the inner wall and the peritoneal cavity. The dialysis principle of the peritoneal dialysis assembly 8 utilizes the characteristic that the peritoneum is a semipermeable membrane. The peritoneal dialysis fluid is placed in the peritoneal cavity and comes into contact with the peritoneum for several hours. Metabolic waste and water pass through the peritoneum into the peritoneal cavity, and then the dialysis fluid and metabolic waste are drained out of the peritoneal cavity.

[0043] In some embodiments, the connector assembly in the peritoneal dialysis unit 8 includes a titanium connector 80 and an external short tube 81. One end of the titanium connector 80 is used to connect to the peritoneal cavity through the peritoneal dialysis catheter 1, and the other end of the titanium connector 80 is connected to the connector of the dual-connection system 82 through the external short tube 81. The external short tube 81 is provided with a connector for connecting to the connector of the dual-connection system 82. When the external short tube 81 is disconnected from the dual-connection system 82, an iodine cap is attached to the connector of the external short tube 81 to prevent contamination of the connector while it is open, thus preventing peritoneal infection. An antibacterial coating 2 is also provided on the inner wall of the external short tube 81, and a textured layer 3 is disposed on the surface of the antibacterial coating along the direction away from the inner wall of the external short tube 81. The external short tube 81 can also inhibit the formation of biofilms.

[0044] The various embodiments of this utility model have now been described in detail. To avoid obscuring the concept of this utility model, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solution of this utility model based on the above description.

[0045] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent substitutions can be made to some technical features without departing from the scope and spirit of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any manner.

Claims

1. A peritoneal dialysis catheter (1), comprising a catheter body, characterized in that, The peritoneal dialysis catheter (1) also includes an antibacterial coating (2) and a textured layer (3). The antibacterial coating (2) is disposed on the inner wall (11) of the tube body, and the textured layer (3) is disposed on the surface of the antibacterial coating (2) in a direction away from the inner wall (11).

2. The peritoneal dialysis catheter (1) according to claim 1, characterized in that, The thickness of the textured layer (3) is not greater than the thickness of the antibacterial coating (2).

3. The peritoneal dialysis catheter (1) according to claim 1, characterized in that, The antimicrobial coating (2) includes at least one of an antimicrobial (7) coating, a hydrogel coating, and an antibiotic coating.

4. The peritoneal dialysis catheter (1) according to claim 3, characterized in that, The antimicrobial (7) coating is a silver ion coating.

5. The peritoneal dialysis catheter (1) according to any one of claims 1-4, characterized in that, The thickness of the textured layer (3) is between 0.8 and 1.2 mm.

6. The peritoneal dialysis catheter (1) according to any one of claims 1-4, characterized in that, The textured layer (3) includes at least one of superhydrophobic texture and nanocone texture.

7. The peritoneal dialysis catheter (1) according to any one of claims 1-4, characterized in that, The textured layer (3) is textured by laser.

8. A peritoneal dialysis assembly (8), characterized in that, The peritoneal dialysis assembly (8) includes the peritoneal dialysis catheter (1) as described in any one of claims 1-7.

9. The peritoneal dialysis assembly (8) according to claim 8, characterized in that, The peritoneal dialysis assembly (8) also includes a titanium connector (80), an external short tube (81), and a dual-connection system (82). One end of the titanium connector (80) is used to connect to the peritoneal cavity through the peritoneal dialysis catheter (1), and the other end of the titanium connector (81) is connected to the interface of the dual-connection system through the external short tube. The antibacterial coating (2) is disposed on the inner wall (11) of the tube body in the external short tube, and the textured layer (3) is disposed on the surface of the antibacterial coating (2) along the direction away from the inner wall (11) of the tube body in the external short tube.

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