CN110613893A

CN110613893A - Novel excitation coil

Info

Publication number: CN110613893A
Application number: CN201911048483.1A
Authority: CN
Inventors: 宋增禄; 杨战民; 黄一鸣; 李文书; 吴微
Original assignee: Nanjing Institute of Industry Technology
Current assignee: Nanjing Institute of Industry Technology
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2019-12-27

Abstract

The invention discloses a novel excitation coil, which comprises an excitation coil and a mould, wherein the excitation coil is in a pancake shape, a lead of the excitation coil is formed by weaving 24 plain wires, the plain wires are mutually crossed, the lead is in a hollow circular structure, each group of plain wires is formed by weaving 250 plain wires in a spiral shape, a hose is placed in the lead, liquid fluorine is filled in the hose, and the lead is wound on the mould for 5 circles; the excitation coil can meet the working requirements of low inductance, medium-high frequency working frequency and high current, can bear high current of 400A and high frequency of 142kHZ, can efficiently and stably heat a 10cm area in a human body, can play a cooling effect by driving liquid fluorine to flow in a hose in the excitation coil through an external pump, and cannot damage the coil.

Description

Novel excitation coil

Technical Field

The invention relates to the technical field of excitation coils, in particular to a novel excitation coil.

Background

Tumors seriously endanger the health life of human beings so as to become a killer of human beings, and are the biggest public health problem in the world. In the traditional treatment scheme, surgery is the first choice for treating tumors, and is often supplemented with postoperative radiotherapy and chemotherapy to inhibit postoperative recurrence and improve the quality of life of patients, but this is not suitable for patients with poor physical condition. Apart from the treatment of tumors by surgery, there are other forms of therapy, hyperthermia.

The heat treatment is to heat the whole or local part of the human body by physical energy to raise the temperature of the tumor tissue to the effective treatment temperature and maintain for a certain time, and to achieve the treatment purpose of apoptosis of the tumor cells and no damage to the normal tissue by utilizing the difference of the temperature tolerance of the normal tissue and the tumor cells.

The ideal therapeutic method for tumor therapy is to inhibit and destroy tumor cells without damaging the cells of normal tissues, and magnetic induction thermotherapy is proposed. The magnetic induction thermotherapy for tumor is a therapeutic method in which a magnetic material introduced into the tumor site by a specific method is heated by an external alternating magnetic field, so that the tumor cells are killed. The magnetic material implanted into the tumor tissue generates heat through eddy current generated by induction under the action of an external alternating magnetic field, and locally transfers heat in the tumor tissue to form a high-temperature area. When the temperature of the tumor tissue is above 42 ℃, the functions of some tissues and enzyme proteins in the cells are changed, thereby influencing the growth and differentiation of cancer cells and inducing apoptosis, effectively killing the cancer cells and stimulating the self immune function of a human body. The magnetic material implanted into the tumor tissue utilizes eddy current effect, magnetic hysteresis effect and magnetic after-effect relaxation effect to make the heat seed quickly heat and make it close to the tissue locally raise its temperature by means of heat conduction, so that the interior of tumor tissue can form high-temperature zone, at the same time the temperature of normal tissue can be controlled in normal range, so that it can not be damaged by high temperature.

The magnet exciting coil applied to the magnetic induction thermal therapy generally adopts an enameled copper wire. The most important index of the excitation coil is inductance, when the frequency is fixed and the power requirement is fixed, the smaller the inductance, the higher the current requirement is, so in the field of medium-high frequency induction heating, especially in the field of magnetic induction thermotherapy, when the coil with low inductance (lower than 10uH) is adopted, the higher working frequency is generally adopted, and meanwhile, the current requirement is high, and in the process, the excitation coil can generate larger heat. The inductance of the excitation coil can be successfully wound according to the working requirements of an electromagnetic controller at present. However, in the aspect of the electromagnetic induction controller host, application research that a low inductance coil can work is not carried out. The heat dissipation system of the excitation coil mainly adopts a thicker hollow copper pipe, and the copper pipe is forcibly cooled in a water cooling or strong wind high-speed copper pipe circulating cooling mode, but the copper pipe is easy to damage in the moving process.

Based on this, the present invention has devised a novel field coil to solve the above-mentioned problems.

Disclosure of Invention

The invention aims to provide a novel excitation coil which can meet the working requirements of low inductance, medium-high frequency working frequency and high current so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a novel excitation coil, includes excitation coil and mould, excitation coil is the pancake form, excitation coil's wire is woven by 24 plain pencil and is formed, and is individual intercrossing between the plain pencil, the wire is hollow circular structure, every group plain pencil is woven by 250 plain wires one-tenth heliciform and is formed, the hose has been placed in the wire, the hose intussuseption is filled with liquid fluorine, the wire twines 5 rings on the mould.

Preferably, the surface of the excitation coil is embedded with a high-permeability magnetic material.

Preferably, the diameter of the exciting coil is 250 mm.

Preferably, the liquid fluorine is circulated by an external pump to cool the exciting coil.

Preferably, the diameter of the plain thread is 0.06 mm.

Preferably, the wires are connected to a power source through the die outlet.

Preferably, the plain wire is a copper wire.

Compared with the prior art, the invention has the beneficial effects that:

1. the excitation coil can meet the working requirements of low inductance, medium-high frequency working frequency and high current, can bear high current of 400A and high frequency of 142kHZ, and can efficiently and stably heat a 10cm area in a human body.

2. The invention makes the magnetic nano particles implanted in the body generate heat by the manufacturing method of the high-frequency large-current magnetic induction excitation coil, and reaches the temperature for killing cancer cells in a short time, thereby killing the cancer cells and realizing the safe, fixed-point and localized treatment effect on the tumor area.

3. According to the invention, the external pump drives the liquid fluorine to flow in the hose in the excitation coil, so that the cooling effect can be achieved, and the coil cannot be damaged.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the structure of a field coil according to the present invention;

FIG. 2 is a schematic view of a conductive line structure according to the present invention;

FIG. 3 is a schematic view of a liquid fluorine cycle according to the present invention;

FIG. 4 is a schematic diagram of the distribution structure of the element wire harness of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a novel field coil technical solution: the novel magnet exciting coil comprises a magnet exciting coil 1 and a mold 2, wherein the magnet exciting coil 1 is in a pancake shape, a lead 4 of the magnet exciting coil 1 is formed by weaving 24 plain wire bundles 8, the 24 plain wire bundles 8 are mutually crossed, the lead 4 is in a hollow circular structure, each group of plain wire bundles 8 are formed by weaving 250 plain wires 9 in a spiral shape, a hose 5 is placed in the lead 4, liquid fluorine 6 is filled in the hose 5, and the lead 4 is wound on the mold 2 for 5 circles.

Wherein, the surface of the excitation coil 1 is embedded with a high magnetic conductive material 3; the diameter of the excitation coil 1 is 250 mm; the liquid fluorine 6 circularly flows through an external pump 7 to cool the excitation coil 1; the diameter of the plain wire is 0.06 mm; the lead 4 passes through the outlet of the die 2 and is connected with a power supply; the plain wire 9 is a copper wire.

The specific working principle is as follows:

before treatment, magnetic nanoparticles are sent to a tumor area of a human body in an injection mode, then an excitation coil 1 is placed right above the tumor area, high-frequency high-current alternating current is conducted to the excitation coil 1 through an external power supply, an alternating magnetic field can be generated in the tumor area of the human body, at the moment, the magnetic nanoparticles can receive the alternating magnetic field and generate heat, the temperature of the tumor area is controlled to be 42.5 ℃, the temperature for killing cancer cells in a short time is reached, the cancer cells are killed, and the safe, fixed-point and localized treatment effect on the tumor area is achieved.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A novel excitation coil is characterized in that: including excitation coil (1) and mould (2), excitation coil (1) is the pancake form, wire (4) of excitation coil (1) are woven by 24 plain pencil (8) and are formed, 24 intercrossing between plain pencil (8), wire (4) are hollow circular structure, every group plain pencil (8) become the heliciform by 250 plain lines (9) and weave and form, hose (5) have been placed in wire (4), hose (5) intussuseption is filled with liquid fluorine (6), wire (4) twine 5 circles on mould (2).

2. A novel excitation coil according to claim 1, wherein: and a high-permeability magnetic material (3) is embedded on the surface of the excitation coil (1).

3. A novel excitation coil according to claim 1, wherein: the diameter of the excitation coil (1) is 250 mm.

4. A novel excitation coil according to claim 1, wherein: the liquid fluorine (6) is circulated by an external pump (7) to cool the excitation coil (1).

5. A novel excitation coil according to claim 1, wherein: the diameter of the plain wire is 0.06 mm.

6. A novel excitation coil according to claim 1, wherein: the lead (4) passes through the outlet of the die (2) and is connected with a power supply.

7. A novel excitation coil according to claim 1, wherein: the plain wires (9) are copper wires.