Peritoneal dialysis catheter device based on magnetic control

Abstract

The invention provides a peritoneal dialysis catheter device based on magnetic control. The peritoneal dialysis catheter device comprises a magnetic control guided peritoneal dialysis catheter, and magnetic elements are evenly embedded in the abdominal cavity section of the peritoneal dialysis catheter; a plurality of electromagnetic coils are arranged in the magnetic field generator, magnetic fields in different directions and with different intensities are generated through the magnetic field generator, the abdominal cavity section of the peritoneal dialysis catheter is accurately controlled, and minimally invasive and accurate implantation of the peritoneal dialysis catheter is achieved. The flexible catheter is guided through magnetic force, non-invasive and accurate catheter resetting is achieved, when catheter drainage is not smooth due to omentum wrapping, the omentum can be released by guiding the abdominal cavity section of the peritoneal dialysis catheter to move and steer in the body to achieve the purpose that catheter drainage is smooth, and the magnetic navigation technology is applied to the field of peritoneal dialysis for the first time; precise implantation of the peritoneal dialysis catheter is achieved in a non-radiation and minimally invasive mode, and non-invasive and precise resetting during displacement is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a peritoneal dialysis catheter device based on magnetic control. Background Art

[0002] As one of the important renal replacement therapies for end-stage renal disease patients, peritoneal dialysis is widely used globally. It introduces dialysate into the abdominal cavity and uses the peritoneum as a semipermeable membrane to remove metabolic wastes and excess water from the body, maintaining the water, electrolyte, and acid-base balance in the patient's body. However, during the peritoneal dialysis treatment process, the problem of peritoneal dialysis catheter displacement is relatively prominent. According to clinical data statistics, the incidence of peritoneal dialysis catheter displacement is as high as 10%-20%. And complications such as poor drainage of peritoneal dialysis fluid caused by omental wrapping also occur from time to time.

[0003] When the peritoneal dialysis catheter is displaced, in order to restore its normal function, currently, mainly surgical operations or using a guide wire under X-ray guidance for reduction are adopted, but these methods all have obvious limitations.

[0004] Surgical reduction requires a second laparotomy on the patient. The laparotomy not only brings great trauma to the patient, increases the risk of postoperative infection, but also prolongs the patient's recovery period, affecting the patient's quality of life and the subsequent dialysis treatment process. After laparotomy, the patient may need to stay in bed for a long time, and the incidence of complications such as incision infection is relatively high. This not only increases the patient's pain but also may lead to an extended hospital stay and increased medical costs.

[0005] In addition, there is also a method of endoscopic-assisted reduction. Although this method can theoretically observe the position of the peritoneal dialysis catheter more intuitively, due to the high cost of the endoscopic equipment itself and the difficulty in precisely controlling the direction of the catheter during the operation, this method is greatly limited in actual clinical applications. The operation space of the endoscope in the abdominal cavity is limited, and the difficulty of controlling the turning of the catheter is relatively large. It may require multiple adjustments to achieve the ideal reduction effect, which not only increases the operation time but also increases the patient's discomfort.

[0006] Based on this, developing a peritoneal dialysis catheter device based on magnetic control has important clinical significance and application value, and is expected to solve the problems existing in the existing peritoneal dialysis catheter reduction methods. Summary of the Invention

[0007] To overcome the existing problems, an embodiment of the present application provides a peritoneal dialysis catheter device based on magnetic control, including a magnetically controlled peritoneal dialysis catheter and a magnetic field generator. The magnetically controlled peritoneal dialysis catheter is made of a flexible material and has a magnetic element embedded therein. The external magnetic field generator includes a plurality of electromagnetic coils that can generate magnetic fields of different directions and intensities, and can be precisely controlled by the magnetic field generated by the external magnetic field generator to guide the movement and turning of the peritoneal dialysis catheter in the body. By magnetically guiding the flexible catheter, minimally invasive and precise peritoneal dialysis catheter insertion, non-invasive resetting and tube patency are achieved. For the first time, magnetic navigation technology is applied to the field of peritoneal dialysis, and the problems of peritoneal dialysis catheter displacement and omental tube blockage are solved in a non-radiative and non-invasive manner, promoting the implementation of precision medicine in the treatment of kidney diseases.

[0008] The technical solution adopted by the embodiment of the present application to solve its technical problems is as follows:

[0009] A peritoneal dialysis catheter device based on magnetic control, including:

[0010] A magnetically controlled peritoneal dialysis catheter, which is made of a flexible material with good biocompatibility. The abdominal segment of the magnetically controlled peritoneal dialysis catheter is evenly embedded with magnetic elements. The magnetically controlled peritoneal dialysis catheter further includes a catheter body, which is made of medical-grade silicone material. The magnetically controlled peritoneal dialysis catheter has good biocompatibility to reduce irritation and adverse reactions to human tissues. Magnetic elements are embedded in the abdominal segment of the peritoneal dialysis catheter. The magnetic elements are made of neodymium iron boron permanent magnet material and are arranged at equal intervals inside the abdominal segment of the magnetically controlled peritoneal dialysis catheter. The selection of magnetic elements is crucial and must have appropriate magnetic strength and stability, and be evenly distributed inside the main body of the catheter abdominal segment so that it can respond sensitively to external magnetic fields;

[0011] And a magnetic field generator, the magnetic field generator further includes a bracket, the bracket is a regular polygon structure, and the bracket also includes a holding handle. The magnetic field generator is composed of a plurality of electromagnetic coils. The layout and design of the electromagnetic coils are carefully optimized to be able to generate magnetic fields of different directions and intensities, realizing precise control of the magnetically controlled peritoneal dialysis catheter in the body. The plurality of electromagnetic coils can adopt a three-dimensional layout method and are arranged around the patient's abdominal area to ensure that magnetic field forces can be applied to the catheter from all directions. A plurality of electromagnetic coils are provided inside the magnetic field generator, and magnetic fields of different directions and intensities are generated by the magnetic field generator to precisely control the magnetically controlled peritoneal dialysis catheter, for realizing minimally invasive and precise insertion and non-invasive resetting and recanalization of the peritoneal dialysis catheter.

[0012] Preferably, the surface of the magnetically controlled peritoneal dialysis catheter is hydrophilized. Hydroxyl and carboxyl hydrophilic groups are introduced onto the surface through plasma treatment technology, and medical lubricant silicone oil is coated to improve biocompatibility and lubricity, reducing the friction with tissues during movement in the body. By using plasma treatment technology, hydrophilic groups such as hydroxyl and carboxyl are introduced onto the catheter surface, enabling the catheter surface to be better compatible with body fluids and reducing the possibility of protein adsorption and thrombus formation.

[0013] Preferably, the magnetic field generator is also equipped with an accurate magnetic field control and monitoring system. The monitoring system controls the magnitude and direction of the current in each electromagnetic coil to generate the required magnetic field. This system can be operated through computer software. The software interface intuitively displays information such as the current parameters, magnetic field strength, and direction of each electromagnetic coil, and can adjust these parameters in real time. By inputting preset magnetic field parameters, the system can automatically control the magnitude and direction of the current in each electromagnetic coil, thereby generating the required magnetic field.

[0014] Preferably, the operation steps are as follows:

[0015] Step 1: When inserting the catheter for the first time, insert the magnetically controlled peritoneal dialysis catheter into the abdominal cavity through percutaneous puncture under the guidance of B-ultrasound. Guide the abdominal cavity section of the peritoneal dialysis catheter through the magnetic field generator. In the magnetic field control and catheter guidance step, after turning on the magnetic field generator, set the magnetic field parameters through computer software, and use the small positioning sensor integrated in the magnetic field generator system to monitor the catheter position in real time, and accurately place the catheter tail at the lowest part of the pelvic cavity.

[0016] Step 2: When the peritoneal dialysis catheter is displaced, determine the displacement position of the peritoneal dialysis catheter and the surrounding tissue conditions through abdominal plain film or B-ultrasound examination. After turning on the magnetic field generator, set the magnetic field parameters through computer software according to the initial position of the catheter and the displacement situation of the peritoneal dialysis catheter, and use the small positioning sensor integrated in the magnetic field generator system to monitor the catheter position in real time, and perform reduction under the guidance of B-ultrasound.

[0017] Step 3: When it is determined that the peritoneal dialysis catheter has poor drainage and is wrapped by omentum after examination, determine the displacement of the peritoneal dialysis catheter and the surrounding tissue conditions through B-ultrasound examination, determine the control parameters of the magnetic field generator, and perform release and reduction under the guidance of B-ultrasound.

[0018] Insert the magnetically controlled peritoneal dialysis catheter. In the step of inserting the magnetically controlled peritoneal dialysis catheter, guide the abdominal cavity section of the peritoneal dialysis catheter through the magnetic field generator. In the magnetic field control and peritoneal dialysis catheter guidance step, the advantages of the embodiments of the present application are:

[0019] 1. It includes a magnetically controlled peritoneal dialysis catheter and a magnetic field generator. The magnetically controlled peritoneal dialysis catheter is made of flexible material, and a magnetic element is embedded inside the abdominal cavity section of the catheter. The external magnetic field generator includes multiple electromagnetic coils, which can generate magnetic fields with different directions and intensities, and can be precisely controlled through the magnetic field generated by the external magnetic field generator to guide the movement and turning of the abdominal cavity section of the peritoneal dialysis catheter in the body. By guiding the flexible catheter with magnetic force, minimally invasive and precise peritoneal dialysis catheter insertion, non-invasive resetting and tube patency are achieved. For the first time, magnetic navigation technology is applied to the field of peritoneal dialysis, and the problems of peritoneal dialysis catheter displacement and omental tube blockage are solved through a non-radiation and non-invasive method, promoting the implementation of precision medicine in the treatment of kidney diseases.

[0020] 2. When the magnetically controlled peritoneal dialysis catheter enters the body through minimally invasive methods such as percutaneous puncture and when complications such as displacement or omental tube blockage occur, non-invasive resetting and omentum release operations are performed, greatly reducing the trauma to the patient's body. The patient recovers quickly after surgery, has less pain, and improves the patient's comfort and quality of life. The resetting method based on magnetic force control does not rely on radiological imaging equipment, and the patient does not need to bear the harm of radiation exposure during the resetting process, which is particularly important for patients who need long-term peritoneal dialysis treatment and reduces the risk of potential harm to the patient's body caused by radiation. Brief Description of the Drawings

[0021] The present invention will be further described below in conjunction with the drawings and embodiments.

[0022] Figure 1 It is a schematic diagram of the overall structure of the peritoneal dialysis catheter in the magnetically controlled peritoneal dialysis catheter device based on the present invention;

[0023] Figure 2 It is a schematic diagram of the overall structure of the magnetic field generator in the magnetically controlled peritoneal dialysis catheter device based on the present invention;

[0024] Figure 3 It is a schematic diagram of the overall structure of the magnetic element of the peritoneal dialysis catheter in the magnetically controlled peritoneal dialysis catheter device based on the present invention.

[0025] Main Reference Numeral Descriptions:

[0026] 1. Magnetic field generator; 11. Bracket; 12. Electromagnetic coil; 2. Magnetically controlled peritoneal dialysis catheter; 21. Catheter body; 22. Magnetic element. Detailed Embodiments

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention. In addition, for the convenience of description below, the "upper", "lower", "left", "right", etc. cited are consistent with the upper, lower, left, right, etc. of the accompanying drawings themselves. The "first", "second", etc. below are for distinction in description and have no other special meanings.

[0028] The embodiments of the present application provide a peritoneal dialysis catheter device based on magnetic control to solve the problems in the prior art, including a magnetically controlled peritoneal dialysis catheter and a magnetic field generator. The magnetically controlled peritoneal dialysis catheter is made of a flexible material and embedded with magnetic elements inside. The external magnetic field generator includes a plurality of electromagnetic coils, which can generate magnetic fields in different directions and intensities, and can be precisely controlled by the magnetic fields generated by the external magnetic field generator to guide the movement and turning of the peritoneal dialysis catheter in the body. By magnetically guiding the flexible catheter, minimally invasive and precise peritoneal dialysis catheter insertion and non-invasive reset are realized. For the first time, magnetic navigation technology is applied to the field of peritoneal dialysis, and the problems of peritoneal dialysis catheter displacement and omental blockage are solved in a non-radiative and non-invasive manner, promoting the implementation of precision medicine in the treatment of kidney diseases; the magnetically controlled peritoneal dialysis catheter is inserted into the body through minimally invasive methods such as percutaneous puncture, greatly reducing the trauma to the patient's body. The patient recovers quickly after the operation, has less pain, and improves the patient's comfort and quality of life. The magnetic control-based reset method does not rely on radiological imaging equipment, and the patient does not need to bear the risk of radiation exposure during the reset process, which is particularly important for patients who need long-term peritoneal dialysis treatment and reduces the risk of potential harm caused by radiation to the patient's body.

[0029] The general idea of the technical solutions in the embodiments of the present application to solve the above problems is as follows:

[0030] Embodiment

[0031] This embodiment gives the specific structure of a peritoneal dialysis catheter based on magnetic control, as Figures 1-3 shown, including:

[0032] The magnetically controlled peritoneal dialysis catheter 2 is made of a flexible material with good biocompatibility. The magnetically controlled peritoneal dialysis catheter 2 is evenly embedded with magnetic elements 22 inside. The magnetically controlled peritoneal dialysis catheter 2 also includes a catheter body 21, and the catheter body 21 is made of medical-grade silicone material. The magnetically controlled peritoneal dialysis catheter 2 has good biocompatibility to reduce irritation and adverse reactions to human tissues. There are magnetic elements 22 embedded inside the magnetically controlled peritoneal dialysis catheter 2. The magnetic elements 22 are made of neodymium iron boron permanent magnet material and are arranged at equal intervals inside the magnetically controlled peritoneal dialysis catheter 2. The selection of the magnetic elements 22 is crucial and must have appropriate magnetic strength and stability, and be evenly distributed inside the catheter body 21 so that it can respond sensitively to an external magnetic field;

[0033] And, a magnetic field generator 1. The magnetic field generator 1 also includes a bracket 11. The bracket 11 is a regular polygon structure. The bracket 11 also includes a holding handle. The magnetic field generator 1 is composed of a plurality of electromagnetic coils 12. The layout and design of the electromagnetic coils 12 are carefully optimized to be able to generate magnetic fields in different directions and intensities, realizing precise control of the magnetically controlled peritoneal dialysis catheter 2 in the body. The plurality of electromagnetic coils 12 can adopt a three-dimensional layout mode and are arranged around the patient's abdominal area to ensure that a magnetic field force can be applied to the catheter from all directions. There are a plurality of electromagnetic coils 12 inside the magnetic field generator 1. Different directions and intensities of magnetic fields are generated through the magnetic field generator 1 to precisely control the magnetically controlled peritoneal dialysis catheter 2, which is used to achieve non-invasive and precise repositioning of the peritoneal dialysis catheter.

[0034] The surface of the magnetically controlled peritoneal dialysis catheter 2 is subjected to a hydrophilic treatment. Hydroxyl and carboxyl hydrophilic groups are introduced on the surface through plasma treatment technology, and a medical lubricant silicone oil is coated to improve biocompatibility and lubricity and reduce the friction with tissues during movement in the body. By using plasma treatment technology, hydrophilic groups such as hydroxyl and carboxyl are introduced on the catheter surface, enabling the catheter surface to be better compatible with body fluids and reducing the possibility of protein adsorption and thrombus formation.

[0035] The magnetic field generator 1 is also equipped with a precise magnetic field control and monitoring system. The monitoring system controls the magnitude and direction of the current of each electromagnetic coil 12 to generate the required magnetic field. This system can be operated through computer software. The software interface intuitively displays information such as the current parameters, magnetic field intensity, and direction of each electromagnetic coil 12, and can adjust these parameters in real time. By inputting preset magnetic field parameters, the system can automatically control the magnitude and direction of the current of each electromagnetic coil 12, thereby generating the required magnetic field.

[0036] The operation steps are as follows:

[0037] Step 1: When performing the first catheter placement, insert the magnetically controlled peritoneal dialysis catheter into the abdominal cavity through percutaneous puncture under B-ultrasound guidance. Guide the abdominal segment of the magnetically controlled peritoneal dialysis catheter through the magnetic field generator. In the magnetic field control and catheter guidance step, after turning on the magnetic field generator, set the magnetic field parameters through computer software, and use the small positioning sensor integrated in the magnetic field generator system to monitor the catheter position in real time, and accurately place the catheter tail at the lowest point of the pelvic cavity;

[0038] Step 2: When the abdominal segment of the peritoneal dialysis catheter is displaced, determine the displacement position of the abdominal segment of the peritoneal dialysis catheter and the surrounding tissue conditions through abdominal X-ray or B-ultrasound examination. After turning on the magnetic field generator, set the magnetic field parameters through computer software according to the initial position of the catheter and the displacement of the abdominal segment of the peritoneal dialysis catheter, and use the small positioning sensor integrated in the magnetic field generator system to monitor the catheter position in real time, and perform reduction under B-ultrasound guidance;

[0039] Step 3: When it is determined that the peritoneal dialysis catheter has poor drainage due to omental wrapping after examination, determine the displacement of the abdominal segment of the peritoneal dialysis catheter and the surrounding tissue conditions through B-ultrasound examination, determine the control parameters of the magnetic field generator, and perform loosening and reduction under B-ultrasound guidance.

[0040] By adopting the above technical solutions:

[0041] Insert the magnetically controlled peritoneal dialysis catheter 2 through percutaneous puncture under B-ultrasound guidance, guide the abdominal segment of the magnetically controlled peritoneal dialysis catheter 2 through the magnetic field generator 1, and accurately place the catheter tail at the lowest point of the pelvic cavity. When the abdominal segment of the peritoneal dialysis catheter 2 is displaced, determine the displacement position of the abdominal segment of the peritoneal dialysis catheter 2 and the surrounding tissue conditions through abdominal X-ray or B-ultrasound examination, formulate a personalized reduction plan, determine the initial setting value of the control parameters of the magnetic field generator 1, and perform reduction under B-ultrasound guidance. When it is considered that the peritoneal dialysis catheter 2 has poor drainage due to omental wrapping, determine whether the abdominal segment of the peritoneal dialysis catheter 2 is displaced and the surrounding tissue conditions through B-ultrasound examination, determine the control parameters of the magnetic field generator 1, and perform loosening and reduction under B-ultrasound guidance.

[0042] Working principle: The magnetic field generated by the external magnetic field generator 1 precisely controls the abdominal segment of the magnetically controlled peritoneal dialysis catheter 2. When it is necessary to reduce the displaced peritoneal dialysis catheter 2, turn on the magnetic field generator 1, and adjust the current parameters of the electromagnetic coil 12 according to the real-time position of the magnetically controlled peritoneal dialysis catheter 2 in the body and the displacement of the abdominal segment of the peritoneal dialysis catheter 2, so as to change the direction and intensity of the magnetic field. Under the action of the magnetic field, the magnetic element 22 inside the abdominal segment of the magnetically controlled peritoneal dialysis catheter 2 is subjected to a magnetic force, and then the abdominal segment of the magnetically controlled peritoneal dialysis catheter 2 moves and turns in the body along a predetermined path.

[0043] When the abdominal segment of the magnetically controlled peritoneal dialysis catheter 2 needs to turn in a certain direction, by adjusting the current of the electromagnetic coil 12 in a specific direction of the magnetic field generator 1, the magnetic field intensity in this direction is enhanced, so as to generate a magnetic force in a certain direction on the magnetic element 22 in the catheter, prompting the abdominal segment of the magnetically controlled peritoneal dialysis catheter 2 to turn in a specific direction and finally guiding it to the correct position, realizing non-invasive and precise reset of the peritoneal dialysis catheter.

[0044] When it is necessary to release the omental wrapping and blockage of the catheter, the technical method and working principle of operating the catheter to turn are similar to the reset method.

[0045] Finally, it should be noted that: Obviously, the above examples are only for clearly illustrating the present invention and are not limitations on the implementation modes. For those of ordinary skill in the art, other different forms of changes or variations can be made on the basis of the above description. It is not necessary and impossible to enumerate all the implementation modes here. And the obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims

1. A peritoneal dialysis catheter device based on magnetic control, characterized in that, Comprising: A magnetically controlled peritoneal dialysis catheter (2), made of a flexible material with good biocompatibility, and magnetic elements (22) are evenly embedded inside the magnetically controlled peritoneal dialysis catheter (2); And a magnetic field generator (1), which is internally provided with a plurality of electromagnetic coils (12). Different directions and intensities of magnetic fields are generated by the magnetic field generator (1) to precisely control the magnetically controlled peritoneal dialysis catheter (2), so as to solve the minimally invasive and precise placement of the peritoneal dialysis catheter, achieve non-invasive and precise reset during displacement, and achieve non-invasive loosening, reopening and reset when the omentum wraps around and causes poor drainage.

2. The peritoneal dialysis catheter device based on magnetic control according to claim 1, wherein The surface of the magnetically controlled peritoneal dialysis catheter (2) is hydrophilized. Hydroxyl and carboxyl hydrophilic groups are introduced on the surface through plasma treatment technology, and a medical lubricant silicone oil is coated to improve biocompatibility and lubricity and reduce the friction with tissues during movement in the body.

3. The peritoneal dialysis catheter device based on magnetic control according to claim 1, wherein The magnetic field generator (1) is also equipped with an accurate magnetic field control and monitoring system. The monitoring system controls the magnitude and direction of the current of each electromagnetic coil (12) to generate the required magnetic field.

4. The peritoneal dialysis catheter device based on magnetic control according to claim 1, characterized in that, The magnetic elements (22) are made of neodymium iron boron permanent magnet material and are arranged at equal intervals inside the magnetically controlled peritoneal dialysis catheter (2).

5. The peritoneal dialysis catheter device based on magnetic control according to claim 1, characterized in that, The magnetic field generator (1) further includes a bracket (11). The bracket (11) has a regular polygon structure, and the bracket (11) further includes a holding handle.

6. The peritoneal dialysis catheter device based on magnetic control according to claim 1, wherein The magnetically controlled peritoneal dialysis catheter (2) further includes a catheter body (21), and the catheter body (21) is made of medical-grade silicone material.

7. The operating steps of a peritoneal dialysis catheter based on magnetic control according to claim 1, characterized in that, The operation steps are as follows: Step 1: During the first catheterization, the magnetically controlled peritoneal dialysis catheter is inserted under B-ultrasound guidance. The abdominal cavity section of the magnetically controlled peritoneal dialysis catheter is guided by the magnetic field generator to accurately place the catheter tail at the lowest part of the pelvic cavity; Step 2: When the peritoneal dialysis catheter is displaced, the displacement position of the abdominal cavity section of the peritoneal dialysis catheter and the surrounding tissue conditions are determined through abdominal plain film or B-ultrasound examination. A personalized reset plan is formulated, the initial setting value of the control parameters of the magnetic field generator is determined, and the reset is carried out under B-ultrasound guidance; Step 3: When it is considered that the omentum wraps around and causes poor drainage of the peritoneal dialysis catheter, it is determined whether the abdominal cavity section of the peritoneal dialysis catheter is displaced and the surrounding tissue conditions through B-ultrasound examination. The control parameters of the magnetic field generator are determined, and loosening and reset are carried out under B-ultrasound guidance.

8. The operating steps of a peritoneal dialysis catheter based on magnetic control according to claim 7, characterized in that, During the step of inserting the magnetically controlled peritoneal dialysis catheter, the peritoneal dialysis catheter is inserted into the abdominal cavity through the abdominal wall by percutaneous puncture.

9. The operation steps of a peritoneal dialysis catheter based on magnetic control according to claim 7, characterized in that: In the step of magnetic field control and catheter guidance, after the magnetic field generator is turned on, according to the initial position of the catheter and the displacement condition of the abdominal cavity section of the peritoneal dialysis catheter, the magnetic field parameters are set through computer software, and the position of the catheter is monitored in real time by using a small positioning sensor integrated in the magnetic field generator system.

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