Magnetic navigation noninvasive peritoneal dialysis catheter resetting device

Abstract

The utility model provides a magnetic navigation noninvasive peritoneal dialysis catheter resetting device which comprises a guide wire and a neodymium magnet, the guide wire is movably arranged in a peritoneal dialysis catheter in a penetrating mode, the tail end of the guide wire extends out of the tail end of the intra-abdominal section of the peritoneal dialysis catheter and is naturally bent to form a J-shaped head, and the outer side of the J-shaped head is coated with a magnetic layer used for generating magnetic force between the J-shaped head and the neodymium magnet. The guide wire has the advantages that the guide wire intra-abdominal section is a hardened nickel-titanium alloy guide wire, good torque control is achieved, and the guide wire can conveniently pass through the bent position of the catheter; the tail end of the guide wire is naturally bent to be J-shaped after extending out of the catheter, so that the surface area can be increased, damage to surrounding tissues can be avoided, and ultrasonic positioning is facilitated; a ferroferric oxide magnetic material is coated on the J-shaped surface, so that the conduit can be driven to move under the action of the magnetic force of the neodymium magnet; the in-vitro part is a cake-shaped neodymium magnet, and an observation hole is engraved in the center of the neodymium magnet, so that the positioning of the abdomen skin can be observed conveniently during movement.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a magnetic navigation non-invasive peritoneal dialysis catheter resetting device. 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 soaked in peritoneal dialysis fluid; (2) the distal opening is relatively large, and the impact of high-speed fluid inflow / outflow may cause reverse displacement; (3) strenuous activities such as lifting heavy objects, squatting, constipation, and continuous coughing by patients increase the probability of catheter displacement.

[0003] When the intra-abdominal segment of a peritoneal dialysis catheter deviates, guidewires and endoscopic brushes are commonly used to reposition it. However, their disadvantages are: (1) it is difficult to pass a double guidewire through a narrow catheter, and even more difficult to remove; (2) external force repositioning the catheter is not accurate; and (3) the procedure must be performed under X-ray fluoroscopy, exposing the operator to radiation. Summary of the Invention

[0004] In order to solve the above problems, the present invention discloses a magnetic navigation non-invasive peritoneal dialysis catheter resetting device.

[0005] The specific plan is as follows:

[0006] A magnetic navigation non-invasive peritoneal dialysis catheter repositioning device is characterized by comprising a guide wire and a neodymium magnet. The guide wire is movably inserted into the peritoneal dialysis catheter, with its end extending from the end of the intra-abdominal section of the peritoneal dialysis catheter and naturally bent into a J-shaped head. The outer side of the J-shaped head is coated with a magnetic layer for generating magnetic force between it and the neodymium magnet.

[0007] As a further improvement of the present invention, the magnetic layer is a ferroferric oxide magnetic layer.

[0008] As a further improvement of the present invention, the guide wire is a nickel-titanium alloy guide wire.

[0009] As a further improvement of the present invention, the neodymium magnet is a disc-shaped structure with an observation hole provided in the center.

[0010] As a further improvement of the present invention, the peritoneal dialysis catheter is outer-coated with two polyester sleeves.

[0011] The beneficial effects of the present invention are:

[0012] (1) The intra-abdominal section of the guidewire is a hardened nickel-titanium alloy guidewire with good torque control, which can easily pass through the bend of the catheter;

[0013] (2) Shape memory: the end of the guidewire naturally bends into a "J" shape after extending from the catheter, which can not only increase the surface area but also avoid damaging the surrounding tissues and facilitate ultrasound positioning;

[0014] (3) The “J”-shaped surface coating is made of ferroferric oxide magnetic material, which can drive the catheter to move under the magnetic force of the neodymium magnet;

[0015] (4) The external part is a round neodymium magnet with an observation hole in the center to facilitate observation of its positioning on the abdominal skin during movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention.

[0017] List of reference numerals:

[0018] 1- Guide wire, 2- Neodymium magnet, 3- J-shaped tip, 4- Peritoneal dialysis catheter. DETAILED DESCRIPTION

[0019] 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.

[0020] As shown in the figure, the present invention provides a magnetic navigation non-invasive peritoneal dialysis catheter repositioning device, comprising a guidewire 1 and a neodymium magnet 2. The guidewire 1 is movably positioned within a peritoneal dialysis catheter 4, with its distal end extending from the intra-abdominal end of the peritoneal dialysis catheter 4 and naturally bending to form a J-shaped head 3. The outer surface of the J-shaped head 3 is coated with a magnetic layer to generate magnetic force between it and the neodymium magnet 2. If the catheter shifts within the patient's body, the external neodymium magnet attracts the J-shaped head and moves it, thereby repositioning the intra-abdominal section of the catheter.

[0021] In this embodiment, the magnetic layer is a ferroferric oxide magnetic layer.

[0022] In this embodiment, the guide wire 1 is a nickel-titanium alloy guide wire.

[0023] In this embodiment, the neodymium magnet 3 is a disc-shaped structure with an observation hole provided at the center.

[0024] In this embodiment, the peritoneal dialysis catheter 4 is covered with two polyester sleeves.

[0025] 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 magnetic navigation non-invasive peritoneal dialysis catheter repositioning device, characterized in that: The invention comprises a guide wire (1) and a neodymium magnet (2). The guide wire (1) is movably arranged in a peritoneal dialysis catheter (4), and its end extends from the end of the intra-abdominal section of the peritoneal dialysis catheter (4) and is naturally bent into a J-shaped head (3). The outer side of the J-shaped head (3) is coated with a magnetic layer for generating magnetic force between the guide wire and the neodymium magnet (2).

2. The magnetic navigation non-invasive peritoneal dialysis catheter repositioning device according to claim 1, characterized in that: The magnetic layer is a ferroferric oxide magnetic layer.

3. The magnetic navigation non-invasive peritoneal dialysis catheter repositioning device according to claim 1, characterized in that: The guide wire (1) is a nickel-titanium alloy guide wire.

4. The magnetic navigation non-invasive peritoneal dialysis catheter repositioning device according to claim 1, characterized in that: The neodymium magnet (2) is a disc-shaped structure with an observation hole provided at the center.

5. The magnetic navigation non-invasive peritoneal dialysis catheter repositioning device according to claim 1, characterized in that: The peritoneal dialysis catheter (4) is provided with two polyester sleeves.

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