CN217745200U

CN217745200U - Catheter fixing device for peritoneal dialysis and peritoneal dialysis tube assembly

Info

Publication number: CN217745200U
Application number: CN202221200450.1U
Authority: CN
Inventors: 董捷; 史继荣; 杨志凯; 马甜甜
Original assignee: Peking University First Hospital
Current assignee: Peking University First Hospital
Priority date: 2022-05-19
Filing date: 2022-05-19
Publication date: 2022-11-08
Anticipated expiration: 2032-05-19

Abstract

The utility model provides a peritoneal dialysis tube assembly which is used for a catheter fixing device for peritoneal dialysis and is easy to be pulled out. The catheter fixing device for peritoneal dialysis comprises a first fixing piece, an anti-adhesion connecting piece and a second fixing piece; the first fixing piece is in a short pipe shape, and the inner diameter of the first fixing piece is matched with the outer diameter of the peritoneal dialysis catheter; the second fixing piece is a composite sheet formed by compounding an anti-sticking material layer and an easy-sticking material layer; the anti-adhesion connecting piece is connected with the first fixing piece and the second fixing piece respectively. The peritoneal dialysis tubing assembly comprises a catheter, a first fastener, a second fastener, and an anti-adhesive connector; one end of the guide pipe is provided with a plurality of siphon holes; the first fixing piece is fixedly sleeved on the outer surface of the catheter; the second fixing piece is used for being bonded with the surface of the rectus abdominis front sheath by the easy-adhesive material layer. The utility model discloses a peritoneal dialysis tube subassembly greatly reduced behind the peritoneal dialysis pipe with the muscle tissue peel off the degree of difficulty, make peritoneal dialysis tube pull out more easily.

Description

Catheter fixing device for peritoneal dialysis and peritoneal dialysis tube assembly

Technical Field

The utility model relates to a medical instrument, in particular to a fixing device for a peritoneal dialysis catheter.

Background

Peritoneal dialysis is a home kidney replacement treatment mode for patients with terminal chronic kidney diseases, a peritoneal dialysis tube is placed into the abdominal cavity of the patients, and the effects of removing toxins and water can be achieved by infusing and draining peritoneal dialysis liquid, so that the relatively stable environment in the body is maintained. Removal of the peritoneal dialysis tubing is required when the patient stops peritoneal dialysis treatment for a variety of reasons (kidney transplant, death, switch to hemodialysis).

The currently and conventionally used peritoneal dialysis tube is a silicone tube with a siphon small hole at the tail end, and the peritoneal dialysis tube is integrally divided into an internal abdominal section, a subcutaneous section and an external abdominal section through an internal cuff structure and an external cuff structure attached to the silicone tube. In use, the inner cuff is usually embedded in the rectus abdominis, and the outer cuff is in the subcutaneous fat layer, achieves fixation through the respective adhesive growth with surrounding tissues, and prevents the infection of abdominal cavity caused by the invasion of bacteria in vitro. However, the procedure for removing the peritoneal dialysis catheter is complicated, and the skin and subcutaneous tissue are cut layer by layer to expose and separate the cuff and the outer cuff in the peritoneal dialysis catheter by adopting a surgical incision method in an operating room under local or other anesthesia or even general anesthesia. Generally, the adhesion between the outer cuff and the surrounding fat is loose and easy to separate, while the inner cuff is tightly adhered to the surrounding rectus abdominis and rectus abdominis sheath during growth, so that the separation takes a long time and the patient suffers much pain. In contrast, removal of the hemodialysis tube can be easily accomplished at the patient's bedside without anesthesia. Therefore, the removal cost and burden of the peritoneal dialysis catheter are large, which is one of the obstacles limiting the wide application of the technology.

Therefore, there is a need to develop a new peritoneal dialysis catheter that is easier to remove after being removed.

Disclosure of Invention

The utility model aims to provide a: provided is a peritoneal dialysis catheter having a structure that can be easily removed from the body.

The above object of the utility model is realized through following technical scheme:

firstly, the utility model provides a catheter fixing device for peritoneal dialysis, which comprises a first fixing part, an anti-sticking connecting part and a second fixing part; the first fixing piece is in a short pipe shape, and the inner diameter of the first fixing piece is matched with the outer diameter of the peritoneal dialysis catheter; the second fixing piece is a composite sheet formed by compounding an anti-sticking material layer and an easy-sticking material layer; the anti-adhesion connecting piece is connected with the first fixing piece and the second fixing piece respectively.

The catheter fixing device for peritoneal dialysis of the utility model is usually used with a peritoneal dialysis catheter. In practical application, the first fixing member may be sleeved on the outer surface of a conventional catheter, and further reinforced by a conventional method to form a fixed connection.

On the basis, the utility model also provides an easily-pulled peritoneal dialysis tube assembly, which comprises a catheter, a first fixing piece, a second fixing piece and an anti-sticking connecting piece;

one end of the conduit is provided with a plurality of siphon holes for drainage or injection of liquid;

the first fixing piece is in a short pipe shape, is fixedly sleeved on the outer surface of the guide pipe at a position far away from the siphon hole and is used for embedding and fixing the subcutaneous fat layer;

the second fixing piece is a composite sheet formed by compounding an anti-sticking material layer and an easy-sticking material layer, and is used for bonding the easy-sticking material layer with the surface of the rectus abdominis front sheath;

the anti-adhesion connecting piece is connected with the first fixing piece and the second fixing piece respectively.

In the peritoneal dialysis tubing assembly of the present invention, the material of the catheter is not particularly limited. All the materials which can be used for indwelling drainage in the body can be used for the catheter in the peritoneal dialysis tube, for example, the catheter made of silica gel. The size of the catheter is not particularly limited.

Catheter fixing device and peritoneal dialysis pipe subassembly in, first mounting be used for burying in subcutaneous adipose layer, through easy adhesion material form the inseparable combination with adipose tissue, can play the fixed action to the long-term pipe of burying. The material of the first fixing element is not particularly limited, and may be a variety of materials suitable for the catheter cuff in the prior art, such as a dacron material.

Catheter securement device and peritoneal dialysis tubing assembly in, the second mounting is composite sheet, including antiseized material layer and easy sticky material layer, in the preferred scheme, can by antiseized material layer via antiseized union piece with first mounting form and connect, and easy sticky material layer is used for forming the bonding with the rectus abdominis front sheath surface in practical application. The material of the anti-adhesion material layer is not particularly limited, and may be various materials which are not easy to adhere to tissues in the prior art, such as silica gel, collagen or expanded polytetrafluoroethylene, and the like. The material of the easily-adhesive material layer is not particularly limited, and may be various materials that are easily adhered to the tissue in the prior art, such as polypropylene, polyester, or polyvinylidene fluoride. The shape and specification of the second fixing member as a whole are not particularly limited, and the shape may be a ring-shaped sheet integrally provided around the duct or a strip-shaped sheet provided in several portions around the duct; the lengths of the parts can be symmetrical, uniform or differentiated no matter what shape. The utility model discloses in the preferred scheme, in order to practice thrift internal limited space, reduce the occupation of redundant material as far as possible, the second mounting center on the strip shape sheet of two or more different length that the pipe circumference set up, can be more nimble from this for the strip shape sheet of the suitable size of the space selection of different sizes around the pipe.

Catheter securement device and peritoneal dialysis tubing assembly in, antiseized even union piece be used for connecting between first mounting and the second mounting, its material also can be various difficult materials with the tissue emergence adhesion, for example can be silica gel, collagen or expanded polytetrafluoroethylene, etc.. The shape and the specification of the anti-adhesion connector are not particularly limited, and the shape of the anti-adhesion connector can be an irregular short pipe integrally arranged around the guide pipe or a strip arranged in parts around the guide pipe; the lengths of the parts can be symmetrical, uniform or different regardless of the shape. In the preferred scheme of the utility model, in order to facilitate the pipe form suitable angle when burying in vivo, antiseized connecting piece be around two or more different length's that pipe circumference set up the strip, can utilize the length difference of strip to form the change of pipe trend from this to obtain the buried angle of ideal.

In the peritoneal dialysis tube assembly of the utility model, the outer surface of the catheter is preferably provided with longitudinal barium lines, so that the walking of the catheter can be conveniently known through daily imaging examination; scales can be arranged for marking the depth of the intraabdominal section.

Compared with the prior art, the utility model discloses a set up the second mounting of sheet form, change the connected mode of peritoneal dialysis pipe and muscle layer into surface adhesion by traditional inside embedding, inseparable adhesion, from this, under having realized the prerequisite effectively fixed to the pipe, greatly reduced behind the peritoneal dialysis pipe and muscle tissue peel off the degree of difficulty, make peritoneal dialysis pipe pull out more easily. When the catheter is pulled out, the catheter can be easily pulled out only by peeling the first fixing piece in the subcutaneous fat layer and then cutting the anti-sticking connecting piece at the upper edge of the second fixing piece. Furthermore, the utility model discloses still couple together the first mounting of embedding in subcutaneous fat layer and the bonded second mounting in abdominal rectus muscle front sheath surface through setting up antiseized connecting piece, can realize the reinforcing to the pipe monolithic stationary function in long-time embedding drainage process.

Drawings

Fig. 1 is a schematic view of the overall structure of a catheter fixing device of embodiment 1.

Fig. 2 is a plan view of the catheter fixing device of example 1.

Fig. 3 is a schematic view showing the overall structure of the peritoneal dialysis tube assembly of example 1.

Fig. 4 is a partial (part a) cross-sectional structural schematic view of the peritoneal dialysis tube assembly of example 1.

Fig. 5 is a schematic view of the peritoneal dialysis tubing assembly of embodiment 1 in actual use.

The reference numerals are explained below:

1-a silica gel catheter, 2-a first fastener, 3-an anti-sticking connector, 4-a second fastener, 41-an anti-sticking material layer, 42-an easy-sticking material layer, 11-siphon holes, 10-an epidermis, 20-a subcutaneous fat layer and 30-a rectus abdominis muscle.

Detailed Description

The technical means of the present invention will be described in detail below by way of examples, but the present invention is not limited to the examples.

Example 1.

A catheter fixing device for peritoneal dialysis, as shown in figures 1 and 2, comprises a first fixing part 2, an anti-adhesion connecting part 3 and a second fixing part 4 which are connected in sequence. The first fixing part 2 is in a short pipe shape made of an easily-adhered material (such as a polyester material), and the inner diameter of the first fixing part is matched with the outer diameter of a conventional peritoneal dialysis catheter. The anti-adhesion connecting piece 3 is a section of irregular silica gel short pipe, the silica gel short pipe has different lengths at different angles, the length of the same silica gel short pipe can gradually change within the range of 2 to 4cm, and the inner diameter of the silica gel short pipe is obviously larger than the outer diameter of a conventional peritoneal dialysis catheter. The upper end and the lower end of the irregular silica gel short pipe are respectively fixedly connected with the first fixing part 2 and the second fixing part 4. The second fixing part 4 is a composite sheet formed by fixedly connecting an anti-sticking material layer 41 (a silica gel layer) and an easy-sticking material layer 42 (a polypropylene layer) in a laminating mode, and the lower end of the irregular silica gel short pipe is fixedly connected with the anti-sticking material layer 41 (the silica gel layer) in the irregular silica gel short pipe.

Example 2.

An easily removable peritoneal dialysis catheter assembly is shown in figure 3 and comprises a silica gel catheter 1, a first fixing member 2, an anti-adhesion connecting member 3 and a second fixing member 4.

As shown in fig. 3, one end of the silica gel catheter 1 with scales on the outer surface is provided with a siphon hole 11 for facilitating drainage or perfusion of liquid in the abdominal cavity, and a first fixing member 2 is arranged at a position close to the other end; the first fixing piece 2 can be a dacron sleeve cuff with the length of about 4cm, and is tightly sleeved on the outer surface of the silica gel conduit 1. As shown in fig. 1 and 2, one end of the adhesion preventing connector 3 is fixedly connected to the bottom end of the first fixing member 2, and the other end is fixedly connected to the second fixing members 4 distributed on both sides of the silica gel catheter 1.

As shown in fig. 3 and 4, the anti-sticking connecting member 3 may be an irregular short silica gel tube arranged around the short silica gel tube 1, the short silica gel tube has different lengths at different angles, the length of the same short silica gel tube can be gradually changed within a range of 2 to 4cm, and the inner diameter of the short silica gel tube is obviously larger than the outer diameter of the conventional peritoneal dialysis catheter. The second fixing member 4 may be a composite sheet material respectively disposed at both sides of the silicone catheter 1. The anti-adhesion connector 3 is arranged around the silica gel guide pipe 1, and a loose gap is reserved between the anti-adhesion connector 3 and the silica gel guide pipe 1. The composite sheets of the second fixing member 4 distributed on the two sides of the silicone catheter may have different specifications, for example, the lengths of the composite sheets may be 4cm and 2cm, and the widths of the composite sheets may be 1cm. The composite sheet is formed by fixedly connecting and compounding an anti-adhesion material layer 41 and an easy-adhesion material layer 42 in a laminating mode, wherein only the anti-adhesion material layer 41 is fixedly connected with the anti-adhesion connector 3. The anti-sticking material layer 41 is a silica gel layer, and the easy-sticking material layer 42 is a polypropylene layer.

In practical application of the peritoneal dialysis catheter assembly of the embodiment, according to a conventional method, as shown in fig. 5, one end of the silica gel catheter 1 with the siphon hole 11 sequentially passes through the epidermis 10, the subcutaneous fat layer 20 and the rectus abdominis 30 through an operation to reach the lowest point of a free abdominal cavity, the depth of the abdominal internal section is determined according to the scale on the surface of the silica gel drainage catheter, the first fixing member 2 (dacron cuff) and the anti-adhesion connecting member 3 (irregular silica gel short tube) are embedded in the subcutaneous fat layer 20, and the easy-adhesion material layer 42 (polypropylene layer) of the second fixing member 4 is adhered to the surface of the front sheath of the rectus abdominis. The peritoneal dialysis tubing assembly of this embodiment only needs the separation lax subcutaneous fat layer in pulling out the art, can expose only a department dacron cover cuff, and silica gel nozzle stub 1 is cut again and can be pulled out the silica gel pipe after the expanded silicon capsule body that is formed at 1 surface of silica gel nozzle stub by antiseized connecting piece 3, compares current peritoneal dialysis tubing and has reduced the operation degree of difficulty and consuming time, alleviates patient's misery. The peritoneal dialysis catheter can help doctors complete the removal operation beside a bed, and the peritoneal dialysis technology is easy to popularize and apply.

Claims

1. A catheter securement device for peritoneal dialysis, characterized in that: comprises a first fixing piece, an anti-sticking connecting piece and a second fixing piece; the first fixing piece is a short tubular polyester sleeve, and the inner diameter of the first fixing piece is matched with the outer diameter of the peritoneal dialysis catheter; the second fixing piece is a composite sheet formed by compounding an anti-sticking material layer and an easy-sticking material layer; the anti-adhesion connecting piece is connected with the anti-adhesion material layers of the first fixing piece and the second fixing piece respectively.

2. An easy-to-remove peritoneal dialysis tube assembly, characterized in that: comprises a conduit, a first fixing piece, a second fixing piece and an anti-sticking connecting piece;

the catheter is made of silica gel, and one end of the catheter is provided with a plurality of siphon holes for liquid drainage or irrigation;

the first fixing piece is a short-pipe-shaped polyester sleeve, is fixedly sleeved on the outer surface of the guide pipe at a position far away from the siphon hole and is used for embedding and fixing the subcutaneous fat layer;

the second fixing piece is a composite sheet formed by compounding an anti-sticking material layer and an easy-sticking material layer and is used for bonding the easy-sticking material layer with the surface of the rectus abdominis front sheath;

the anti-adhesion connecting piece is connected with the anti-adhesion material layers of the first fixing piece and the second fixing piece respectively.

3. The peritoneal dialysis tubing assembly of claim 2, wherein: the anti-sticking material layer of the second fixing piece is made of silica gel, collagen or expanded polytetrafluoroethylene.

4. The peritoneal dialysis tubing assembly of claim 2, wherein: the material of the easy-adhesion material layer of the second fixing piece is polypropylene, polyester or polyvinylidene fluoride.

5. The peritoneal dialysis tubing assembly of claim 2, wherein: the anti-adhesion connecting piece is made of silica gel, collagen or expanded polytetrafluoroethylene.

6. The peritoneal dialysis tubing assembly of claim 2, wherein: the second fixing member is a strip-shaped composite sheet material disposed in portions around the conduit.

7. The peritoneal dialysis tubing assembly of claim 2, wherein: the second fixing member is an annular composite sheet integrally disposed around the conduit.

8. The peritoneal dialysis tubing assembly of claim 2, wherein: the anti-sticking connecting piece is a short pipe which is integrally arranged around the circumference of the guide pipe.

9. The peritoneal dialysis tubing assembly of claim 2, wherein: the outer surface of the conduit is provided with scales.