CN216725537U

CN216725537U - Transcranial magnetic stimulation coil based on superconducting material

Info

Publication number: CN216725537U
Application number: CN202123121747.7U
Authority: CN
Inventors: 刘新杰; 龙景焱; 徐锋
Original assignee: SHENZHEN YINGZHI TECHNOLOGY CO LTD
Current assignee: SHENZHEN YINGZHI TECHNOLOGY CO LTD
Priority date: 2021-12-13
Filing date: 2021-12-13
Publication date: 2022-06-14
Anticipated expiration: 2031-12-13

Abstract

The utility model discloses a transcranial magnetic stimulation coil based on superconducting material, including shell and coil, be equipped with the cooling chamber that holds the coil in the shell, the cooling intracavity is located to the coil, and the coil adopts the discoid structure that the superconducting wire coiling formed, and the cooling intracavity is filled cryogenic liquid, and the shell is equipped with discharge valve at the top. The superconducting wire is adopted to wind the stimulating coil, and because the resistance of the superconducting wire is extremely low and heat is not generated, a special cooling system is not required to be additionally arranged. Meanwhile, the wire diameter of the wire is greatly reduced, and the risks of poor cooling effect, high noise, electric conduction of circulating liquid and the like are reduced. Furthermore, the volume of the wound wire coil is greatly reduced, so that the transcranial magnetic stimulation coil device has smaller volume and weight, is convenient for a user to wear, and improves the use comfort. Furthermore, the superconducting coil has almost no impedance, and can generate strong magnetic field intensity only by small current, so that the energy consumption is reduced, and the treatment effect is improved.

Description

Transcranial magnetic stimulation coil based on superconducting material

Technical Field

The utility model relates to the field of medical equipment, especially, relate to a transcranial magnetic stimulation coil based on superconducting material.

Background

The transcranial magnetic stimulation technology is a non-invasive nerve regulation technology, and the technical principle of realizing the technology is that an energy storage capacitor discharges instantaneously to an exciting coil to generate pulse current, the exciting coil is excited to generate a transient magnetic field, the transient magnetic field cuts nerve tissues in cerebral cortex to generate an induction electric field, and the cell membrane potential is changed, so that the function regulation and control of central nerve are achieved.

The transcranial magnetic stimulation coil is a key component of a transcranial magnetic stimulation system, the spatial distribution characteristic of a transient magnetic field is determined by the transient magnetic stimulation coil, and the spatial distribution of the magnetic field is different and directly influences the distribution of an induced electric field generated in the skull, so that the depth and the precision of transcranial magnetic stimulation are influenced. Since the transcranial magnetic stimulation technology was first proposed by Barker et al in England in 1985, the coil research is more fully studied through years of development. In clinical application, a circular coil, a splayed coil and an H-shaped stimulating coil are more adopted, the circular coil has the characteristic of wide stimulation range, the splayed coil has the characteristic of good stimulation focusing, and the H-shaped stimulating coil has the characteristic of deep stimulation depth. There are also some experts who propose stimulation coils for multi-channel stimulation, but they are still in the research phase and not in clinical use.

In order to generate a sufficient induced electric field in the brain nerves, a current of about 5kA is typically passed through the stimulating coil. When the transcranial magnetic stimulation system carries out repeated stimulation, pulse current repeatedly flows through the stimulation coil, and the coil is wound by a metal lead and has a certain resistance, so that the heat effect of the current can cause the stimulation coil to generate a large amount of heat along with the increase of the number of pulses.

Meanwhile, the focusing performance and depth of the stimulating coil during stimulation are related to the shape of a wire coil, different focusing performances and depths can be achieved by designing the shape of the coil, in order to reduce the heating problem of the stimulating coil, the resistance of the coil needs to be reduced, silver-plated or gold-plated wires can be used for winding, the sectional area of a lead is increased as much as possible, in order to effectively induce action potential of nerve cells, the inductance range of the transcranial magnetic stimulation coil generally needs to be within the range of 10 uH-20 uH, therefore, a certain requirement is made on the number of turns of the coil, the outer diameter of the conventional coil generally ranges from 70 mm to 110mm at present, the sectional area ranges from 5 square millimeters to 10 square millimeters, the heating conditions of different coils are different and are in direct proportion to the product of the sectional area and the electric conductivity of coil materials, from the equipment used clinically at present, no matter how to reduce the resistance of the coil, when the transcranial magnetic stimulation is repeated, the stimulating coil generates large heat, and a cooling system needs to be designed to cool the coil.

The extra design of the cooling system can increase the volume and the weight of the transcranial magnetic stimulation device, and bring inconvenience to users when in clinical use.

SUMMERY OF THE UTILITY MODEL

The utility model provides a transcranial magnetic stimulation coil based on superconducting material, which aims to solve the problem that the volume and the weight of the whole equipment are larger because the existing transcranial magnetic stimulation coil needs to be provided with a cooling system.

According to the embodiment of the application, the transcranial magnetic stimulation coil based on the superconducting material comprises a shell and a coil, wherein a cooling cavity for accommodating the coil is arranged in the shell, and the coil is arranged in the cooling cavity; the coil is of a disc-shaped structure formed by winding a superconducting wire; the cooling cavity is filled with low-temperature liquid, and the top of the shell is provided with an exhaust valve.

Preferably, the top of the shell is provided with a liquid filling port corresponding to the exhaust valve, and the exhaust valve is inserted into the liquid filling port.

Preferably, the number of the coils is multiple, and the multiple coils are arranged on one side, away from the exhaust valve, of the cooling cavity at equal intervals.

Preferably, the housing is provided with a vacuum chamber on an outer peripheral side of the cooling chamber, the vacuum chamber enclosing the cooling chamber.

Preferably, the housing is of a helmet-type construction.

Compared with the prior art, the utility model provides a pair of transcranial magnetic stimulation coil based on superconducting material has following beneficial effect:

1. the superconducting wire is adopted to wind the stimulating coil, and because the resistance of the superconducting wire is extremely low and heat is not generated, a special cooling system is not required to be additionally arranged. Meanwhile, the wire diameter of the wire is greatly reduced, and the risks of poor cooling effect, high noise, electric conduction of circulating liquid and the like are reduced. Furthermore, the volume of the wound wire coil is greatly reduced, so that the transcranial magnetic stimulation coil device has smaller volume and weight, is convenient for a user to wear, and improves the use comfort. Furthermore, the superconducting coil has almost no impedance, and can generate strong magnetic field intensity only by small current, so that the energy consumption is reduced, and the treatment effect is improved.

2. The superconducting material is adopted, so that the occupation of the volume of the equipment is reduced, a plurality of coils are arranged on the same equipment, the positions of the coils correspond to the treatment areas of the head, the treatment effect of a therapist cannot be reduced due to the movement of the head, the coils can be distributed at multiple positions at the stimulation position, and the multi-point stimulation is realized.

Drawings

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

Fig. 1 is a schematic structural diagram of a transcranial magnetic stimulation coil based on a superconducting material according to a first embodiment of the present invention.

Description of the reference symbols:

1. a transcranial magnetic stimulation coil based on superconducting material; 100. a cooling chamber; 101. a vacuum chamber;

11. a housing; 12. a coil; 13. an exhaust valve; 14. and a liquid filling port.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be further understood that the term "and/or" as used in the specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.

Referring to fig. 1, a first embodiment of the present invention discloses a transcranial magnetic stimulation coil 1 based on superconducting material, which is to be worn on the head region of a user.

The transcranial magnetic stimulation coil 1 based on the superconducting material specifically comprises a shell 11 and a coil 12, wherein a cooling cavity 100 for accommodating the coil 12 is arranged in the shell 11, and the coil 12 is arranged in the cooling cavity 100.

The coil 12 is a disk-shaped structure formed by winding a superconducting wire and is positioned in the area of the cooling cavity 100 close to the bottom, and when a user wears the shell 11 on the head, the coil 12 is positioned on the side of the cooling cavity 100 close to the user.

The cooling cavity 100 is filled with low-temperature liquid, and the top of the shell 11 is provided with an exhaust valve 13.

It will be appreciated that the superconducting material needs to be at very low temperature to achieve superconducting, so that the coil 12 needs to be filled with cryogenic liquid, optionally liquid nitrogen, in the cooling chamber 100.

It can be understood that the coil 12 of the stimulation coil is wound by using the superconducting wire, and since the superconducting wire has extremely low resistance and does not generate heat, a special cooling system is not required to be additionally arranged. The wire diameter of the wire rod is greatly reduced, the volume of the wound wire coil is also greatly reduced, the transcranial magnetic stimulation coil equipment has smaller volume and weight, the wearing of a user is facilitated, and the use comfort is improved.

Referring to fig. 1, a liquid filling port 14 is formed at a position of the top of the housing 11 corresponding to the exhaust valve 13, the exhaust valve 13 is inserted into the liquid filling port 14, and when the exhaust valve 13 is inserted into the liquid filling port 14, the exhaust valve 13 seals the liquid filling port 14.

It will be appreciated that the liquid nitrogen is volatile and will diminish over time, and therefore, it is desirable to provide fill port 14 to replenish cryogenic liquid within cooling chamber 100.

With reference to fig. 1, the number of the coils 12 is multiple, the multiple coils 12 are disposed on the side of the cooling cavity 100 away from the exhaust valve 13 at equal intervals, and the multiple coils 12 are disposed such that the same cooling cavity 100 can be distributed with multiple head treatment areas, which can treat multiple areas of the head of the user without reducing the treatment effect due to the movement of the head of the user.

Optionally, as an embodiment, the housing 11 is provided with a vacuum cavity 101 on an outer periphery side of the cooling cavity 100, and the vacuum cavity 101 encloses the cooling cavity 100, so that the cooling cavity 100 is isolated from an external heat source by the vacuum cavity 101, thereby improving a heat insulation effect on the cooling cavity 100 and improving durability of the cryogenic liquid.

It can be understood that, in the present embodiment, the housing 11 is configured as a helmet structure so as to be sleeved on the head region between users, and the cooling chamber 100 and the vacuum chamber 101 are both disposed in the interlayer of the housing 11. The casing 11 is made of a heat insulating material, for example, a glass fiber material or a silicate material.

2. The superconducting material is adopted, so that the volume occupation of the equipment is reduced, a plurality of coils are arranged on the same equipment, the positions of the coils correspond to the treatment areas of the head, the treatment effect of a therapist cannot be reduced due to the movement of the head, the coils can be distributed at multiple positions in the stimulation position, and multi-point stimulation is realized.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention.

Claims

1. A transcranial magnetic stimulation coil based on superconducting materials is characterized by comprising a shell and a coil, wherein a cooling cavity for accommodating the coil is arranged in the shell, and the coil is arranged in the cooling cavity;

the coil is of a disc-shaped structure formed by winding a superconducting wire;

the cooling cavity is filled with low-temperature liquid, and the top of the shell is provided with an exhaust valve.

2. A superconducting material based transcranial magnetic stimulation coil according to claim 1, wherein: the top of the shell is provided with a liquid filling port corresponding to the exhaust valve, and the exhaust valve is inserted into the liquid filling port.

3. A superconducting material based transcranial magnetic stimulation coil according to claim 1, wherein: the quantity of coil is a plurality of, and is a plurality of the coil is equidistant to be located the cooling chamber deviates from discharge valve one side.

4. A superconducting material based transcranial magnetic stimulation coil according to claim 1, wherein: the shell is provided with a vacuum cavity on the outer periphery side of the cooling cavity, and the vacuum cavity surrounds the cooling cavity.

5. A superconducting material based transcranial magnetic stimulation coil according to claim 1, wherein: the shell is of a helmet type structure.