Titanium alloy self-positioning peritoneal dialysis catheter

Abstract

The utility model provides a titanium alloy self-positioning peritoneal dialysis catheter which comprises a catheter body, the tail end of the intra-abdominal section of the catheter body is a closed warhead protruding outwards, an open hole is formed in the side face of the catheter body, and a titanium alloy insert is arranged in the tail end of the intra-abdominal section of the catheter body. The titanium alloy cylinder or the titanium alloy coating is arranged in the tail end of the intra-abdominal section of the catheter main body, so that the weight of the catheter main body can be increased, and self-positioning is realized under the action of gravity; the titanium alloy cylinder or the titanium alloy coating is arranged on the inner wall surface of the catheter main body and is not in contact with an adjacent organ, so that the safety of tissues and organs can be ensured; the titanium alloy barrel or the titanium alloy coating has no risk of falling off, and the titanium alloy material is inert and cannot be decomposed or allergic, so that the safety can be ensured in an electromagnetic environment; the tail end of the intra-abdominal section is provided with a closed warhead protruding outwards, and the closed warhead is closed and round, so that the guide wire does not exceed the tail end and can be in contact with surrounding tissues without discomfort.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a titanium alloy self-positioning peritoneal dialysis catheter. Background Art

[0002] Peritoneal dialysis catheters are an important medical device used in peritoneal dialysis treatment. Peritoneal dialysis is an effective renal replacement therapy for end-stage renal disease, and peritoneal dialysis catheters are the "lifeline" of peritoneal dialysis patients. Currently, the disadvantages of existing peritoneal dialysis catheters are: (1) the intra-abdominal section is relatively light and will float when left in the peritoneal cavity and immersed in peritoneal dialysis fluid; (2) the distal opening is relatively large, and gravity or fluid impact may cause reverse displacement.

[0003] In response to the above problems, existing literature reports on self-positioning peritoneal dialysis catheters, which use a 12-gram tungsten tube embedded in the end of the intra-abdominal section of the peritoneal dialysis catheter (the tungsten tube is on the outer surface of the catheter). Its disadvantages are: (1) The embedded part will corrode and loosen if it is left in the abdominal cavity for a long time and soaked in peritoneal dialysis fluid; (2) When peritoneal dialysis fluid is infused, the impact force of the fluid on the embedded part will cause loosening; (3) The weight of the tungsten tube itself in the standing position will cause loosening; (4) The foreign body in the tungsten tube will stimulate the migration and wrapping of the omentum, and fibrin will adhere; (5) The contact of the tungsten tube with foreign bodies will stimulate the rectum, bladder, and uterus, and the metal tungsten will be released.

[0004] In addition, an existing patent (Anti-wrap Peritoneal Dialysis Catheter, Application No.: 2020223938012) discloses an anti-wrap peritoneal dialysis catheter, comprising a catheter and two collars located on the outer wall of the middle portion of the catheter, including a cross-shaped drainage tube at the end of the catheter, and a side hole on the catheter connected to the cross-shaped drainage tube. Its disadvantages are: (1) the intra-abdominal section of the catheter is still relatively light, and the problem of tube drift still exists; (2) the cross is at the end of the catheter, and the omentum may still be adsorbed. Summary of the Invention

[0005] In order to solve the above problems, the present invention discloses a titanium alloy self-positioning peritoneal dialysis catheter.

[0006] The specific plan is as follows:

[0007] A titanium alloy self-positioning peritoneal dialysis catheter, characterized in that it includes a catheter body, the end of the intra-abdominal section of the catheter body is a closed bullet protruding outward, the side of the closed bullet is provided with an opening connected to the inner cavity of the catheter body, and a titanium alloy insert is provided in the end of the intra-abdominal section of the catheter body.

[0008] As a further improvement of the present invention, the titanium alloy insert is a titanium alloy cylinder that fits tightly against the inner wall of the catheter body.

[0009] As a further improvement of the present invention, the titanium alloy insert is a titanium alloy coating that fits tightly against the inner wall of the catheter body.

[0010] As a further improvement of the present invention, the closed bullet is used to prevent the guidewire from exceeding the end of the intra-abdominal section of the catheter body. It is made of the same material as the catheter body and has a smooth arc surface on the outside.

[0011] As a further improvement of the present invention, the catheter body is outer-coated with two polyester sleeves.

[0012] The beneficial effects of the present invention are:

[0013] (1) By providing a titanium alloy tube or titanium alloy coating at the end of the intra-abdominal section of the catheter body, its weight can be increased, thereby achieving self-positioning under the action of gravity;

[0014] (2) The titanium alloy tube or titanium alloy coating is on the inner wall of the catheter body and does not come into contact with adjacent organs, thus ensuring the safety of tissues and organs;

[0015] (3) There is no risk of the titanium alloy tube or titanium alloy coating falling off, and the titanium alloy material is inert and will not decompose or cause allergies, and it can also ensure safety in electromagnetic environments;

[0016] (4) The end of the intra-abdominal segment adopts a closed bullet that protrudes outward. It is closed and rounded, so that the guide wire does not extend beyond the end and can contact the surrounding tissues without discomfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the present invention.

[0018] Figure 2 for Figure 1 Schematic diagram of the internal structure of the closed warhead.

[0019] List of reference numerals:

[0020] 1-catheter body, 2-enclosed bullet, 3-opening. 4-titanium alloy insert DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0022] As shown in the figure, the present invention provides a titanium alloy self-positioning peritoneal dialysis catheter, comprising a catheter body 1. The intra-abdominal end of the catheter body 1 is terminated by a protruding, enclosed bullet 2. An opening 3 is provided on the side of the enclosed bullet 2, communicating with the inner lumen of the catheter body 1. A titanium alloy insert 4 is provided within the distal end of the intra-abdominal end of the catheter body 1. By providing a titanium alloy tube or titanium alloy coating within the distal end of the intra-abdominal end of the catheter body 1, the catheter body 1 is weighted, thereby achieving self-positioning under the action of gravity.

[0023] In this embodiment, the insert is a titanium alloy tube that fits snugly against the inner wall of the catheter body 1. The coating is a titanium alloy coating that conforms snugly to the inner wall of the catheter body 1. The titanium alloy tube or coating is located on the inner wall of the catheter body 1, avoiding contact with adjacent organs, thereby ensuring the safety of tissues and organs. Furthermore, the titanium alloy tube or coating poses no risk of dislodging. Furthermore, the titanium alloy material is inert and does not decompose or cause allergies, ensuring safety even in electromagnetic environments.

[0024] In this embodiment, the closed bullet 2 is used to prevent the guidewire from extending beyond the distal end of the intra-abdominal segment of the catheter body 1. It is made of the same material as the catheter body 1 and has a smooth, arc-shaped outer surface. This prevents the guidewire from extending beyond the distal end and allows it to contact surrounding tissue without discomfort.

[0025] In this embodiment, the catheter body 1 is covered with two polyester sleeves.

[0026] The technical means disclosed in the solutions of the present invention are not limited to those disclosed in the above-mentioned embodiments, but also include technical solutions composed of any combination of the above-mentioned technical features. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A titanium alloy self-positioning peritoneal dialysis catheter, characterized in that: The catheter body (1) comprises a catheter body (1), wherein the end of the intra-abdominal section of the catheter body (1) is a closed bullet (2) protruding outward, and the side of the closed bullet (2) is provided with an opening (3) communicating with the inner cavity of the catheter body (1), and a titanium alloy insert (4) is provided in the end of the intra-abdominal section of the catheter body (1).

2. A titanium alloy self-positioning peritoneal dialysis catheter according to claim 1, characterized in that: The titanium alloy insert (4) is a titanium alloy cylinder that fits tightly against the inner wall of the catheter body (1).

3. The titanium alloy self-positioning peritoneal dialysis catheter according to claim 1, characterized in that: The titanium alloy insert (4) is a titanium alloy coating that fits tightly against the inner wall of the catheter body (1).

4. The titanium alloy self-positioning peritoneal dialysis catheter according to claim 1, characterized in that: The closed bullet (2) is used to prevent the guide wire from exceeding the end of the intra-abdominal section of the catheter body (1). It is made of the same material as the catheter body (1) and has a smooth arc surface on the outside.

5. The titanium alloy self-positioning peritoneal dialysis catheter according to claim 1, characterized in that: The catheter body (1) is provided with two polyester sleeves.

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