CN109621209A - A kind of inside and outside reversal circle cerebral magnetic stimulation coil - Google Patents
A kind of inside and outside reversal circle cerebral magnetic stimulation coil Download PDFInfo
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- CN109621209A CN109621209A CN201811629459.2A CN201811629459A CN109621209A CN 109621209 A CN109621209 A CN 109621209A CN 201811629459 A CN201811629459 A CN 201811629459A CN 109621209 A CN109621209 A CN 109621209A
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- 230000000638 stimulation Effects 0.000 title claims abstract description 36
- 230000002490 cerebral effect Effects 0.000 title claims abstract description 25
- 238000011491 transcranial magnetic stimulation Methods 0.000 abstract description 12
- 210000004761 scalp Anatomy 0.000 abstract description 5
- 210000004126 nerve fiber Anatomy 0.000 abstract description 4
- 230000004936 stimulating effect Effects 0.000 description 6
- 238000004146 energy storage Methods 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 210000001178 neural stem cell Anatomy 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 210000005036 nerve Anatomy 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 210000003169 central nervous system Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001054 cortical effect Effects 0.000 description 1
- 210000003792 cranial nerve Anatomy 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000007917 intracranial administration Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000003061 neural cell Anatomy 0.000 description 1
- 230000001537 neural effect Effects 0.000 description 1
- 210000000578 peripheral nerve Anatomy 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N2/00—Magnetotherapy
- A61N2/004—Magnetotherapy specially adapted for a specific therapy
- A61N2/006—Magnetotherapy specially adapted for a specific therapy for magnetic stimulation of nerve tissue
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N2/00—Magnetotherapy
- A61N2/02—Magnetotherapy using magnetic fields produced by coils, including single turn loops or electromagnets
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Neurology (AREA)
- Magnetic Treatment Devices (AREA)
Abstract
The present invention provides a kind of inside and outside reversal circle cerebral magnetic stimulation coil, by configuring the opposite inner circular coil of current direction inside external circular coil, Inside coil and external coil are generally aligned in the same plane, and the center of Inside coil and the center of external coil are overlapped.Space magnetic field is generated jointly by Inside coil and external coil, so that magnetic field is in certain point, there are maximum values on cerebral magnetic stimulation coil axis provided by the present invention, from the point no matter far from coil or close to coil direction, magnetic field can all reduce, the existing transcranial magnetic stimulation circular coil of customer service encloses closer offline, the higher limitation of magnetic field strength, so that the inside and outside reversal circle cerebral magnetic stimulation coil field stimulation is more concentrated, a possibility that unrelated nerve fiber is stimulated significant decrease, it is sharp to can be relieved patient's scalp.
Description
Technical field
The invention belongs to transcranial magnetic stimulation technical field, in particular to a kind of inside and outside reversal circle transcranial magnetic stimulation line
Circle.
Background technique
Transcranial magnetic stimulation (Transcranial magnetic stimulation, abbreviation TMS) technology is a kind of using arteries and veins
Magnetic fields are rushed in central nervous system, changes the film potential of cortical neural cell, is allowed to generate induced current, influence intracerebral generation
It thanks and neural electrical activity, so as to cause a series of Neural stem cell technology of biochemical reactions.TMS has noninvasive, painless, safe
Feature can be used for stimulating cranial nerve, nerve root and peripheral nerve.Be now widely used in Neuscience, brain science research field and
The diagnosing and treating of clinical disease.
Transcranial magnetic stimulation system consists of two parts: high pressure pulse generating system and stimulating coil.In order to accurate and effective
Ground stimulates appointed part, and magnetic field strength, stimulation depth and the degree of focus generated to coil is proposed very high requirement.Neural stem cell
Degree of focus determine the stimulation selective power of magnetic stimulation system.High degree of focus can reduce field stimulation, reduce unrelated nerve
Organize the possibility being stimulated.Stimulation depth determines that magnetic stimulation system is able to maintain the distance of certain stimulus intensity.If wanted
Effective stimulus is carried out to intracranial deep nerve fiber and then needs bigger stimulation depth and higher degree of focus, however existing warp
Cranium Neural stem cell circular coil is all that offline circle is closer, and magnetic field strength is higher, causes field stimulation big, and patient's scalp shouting pain etc. is asked
Topic.
Summary of the invention
The purpose of the present invention is to provide a kind of round cerebral magnetic stimulation coils, overcome existing transcranial magnetic stimulation round wire
Circle encloses closer, the higher feature of magnetic field strength offline, and the Surface field intensity for solving existing magnetic stimulating coil is excessive and causes to suffer from
The problem of person's scalp shouting pain.
To achieve the above object, the present invention adopts the following technical scheme:
It proposes a kind of round cerebral magnetic stimulation coil, is made of Inside coil and external coil, Inside coil and outer lines
The current direction of circle is opposite.Inside coil the number of turns is Ni, inner circle radius Ri1, exradius Ri2；External coil the number of turns No, inner circle
Radius Ro1, exradius Ro2.
A further improvement of the present invention lies in that: No >=3；Ni≥3.
A further improvement of the present invention lies in that: Inside coil and external coil are generally aligned in the same plane, the center of Inside coil
It is overlapped with the center of external coil.
A further improvement of the present invention lies in that: Ro1 > Ri2.
Compared with prior art, the invention has the following advantages that the present invention provides a kind of inside and outside reversal circle through cranium magnetic
Stimulating coil, by configuring the opposite inner circular coil of current direction in external circular coil inner concentric, space magnetic field by
Inside coil and external coil generate jointly, so that magnetic field has at certain on cerebral magnetic stimulation coil axis provided by the present invention
There are maximum values for a bit, and from the point no matter far from coil or close to coil direction, magnetic field can all reduce, so that described inside and outside reversed
A possibility that type circle cerebral magnetic stimulation coil field stimulation is more concentrated, and unrelated nerve fiber is stimulated significant decrease is alleviated
Patient's scalp shouting pain.
Detailed description of the invention
Fig. 1 is a kind of transcranial magnetic stimulation systematic schematic diagram；
Fig. 2 is inside and outside reversal circle cerebral magnetic stimulation coil structural schematic diagram of the present invention；
Fig. 3 is that inside and outside reversal circle cerebral magnetic stimulation coil of the present invention generates magnetic field changes along axial line distance one
A example.
Specific embodiment
Below with reference to specification embodiment and Figure of description, invention is further explained.
A kind of transcranial magnetic stimulation system principle is provided herein, as shown in Figure 1, transcranial magnetic stimulation system generally will by power supply
Then energy storage allows energy storage pulsed capacitance to be put by thyristor to stimulating coil rapid large-current in energy storage pulsed capacitance
Electricity generates momentary pulse magnetic field, stimulates patient.
It please refers to shown in Fig. 2, inside and outside reversal circle cerebral magnetic stimulation coil proposed by the invention, by Inside coil 11
It is formed with external coil 12, Inside coil 11 is opposite with the current direction of external coil 12.Inside coil the number of turns is Ni, inner circle half
Diameter Ri1, exradius Ri2；External coil the number of turns No, inner circle radius Ro1, exradius Ro2.Ro1 > Ri2；Ni >=3, No >=
3, in the same plane, the center of Inside coil and external coil is overlapped for Inside coil and external coil.Coil-winding can be used
The high conductive metallic material such as copper or aluminium.One preferred embodiment are as follows: coil-winding material is copper, Inside coil and outer lines
Circle series connection, current direction is on the contrary, Ni=10, No=15, Ri1=10mm, Ri2=22mm, Ro1=25mm, Ro2=40mm.
It please refers to shown in Fig. 3, is the discharge voltage 300V in the 200 μ F of energy storage pulsed capacitance of transcranial magnetic stimulation system
The magnetic field pulse peak value of the inside and outside reversal transcranial magnetic stimulation system output of Shi Suoshu is with axial line distance variation relation, it is seen that online
On coil axis direction, peak magnetic field maximum of points is clearly present at 15mm distance.Since extraterrestrial target point magnetic field is by inner wire
Circle 11 and 12 collective effect of external coil, due to the current direction of Inside coil 11 and external coil 12 on the contrary, true field is
The two generates the difference in magnetic field, since at the common axis line coil surface of Inside coil and external coil, Inside coil at this time
Magnetic field caused by 11 is larger, and the magnetic field that external coil 12 generates is also larger, but since the two is contrary, difference is smaller, fits
Work as adjusting parameter, may make the magnetic field coil surface Dian Chu close to zero, since 11 size of Inside coil is small, produced magnetic field is with distance
Decay fastly, as target point is gradually distance from coil surface along axis, has just started magnetic field caused by Inside coil 11 and subtracted rapidly
It is small, cause magnetic field difference caused by external coil and Inside coil to become larger, after reaching a certain position, with the continuation of distance
Becoming larger, magnetic field caused by final Inside coil and external coil all gradually becomes smaller and goes to zero, that is, there is a maximum of points,
At this point, at 15mm, no matter to far from coil direction or close to coil direction, magnetic field all reduces in this example.Using this
Closer to coil, magnetic field is stronger to be lacked the invention existing circular coil of inside and outside reversal cerebral magnetic stimulation coil energy customer service
Point, there are maximum value of magnetic field points on axis, convenient for precisely stimulating target point, so as to greatly reduce unrelated nerve fiber by
A possibility that stimulation, reduction of patient scalp are sharp.
The above is only the preferred embodiments of the disclosure, but the protection scope invented is not limited thereto, any ripe
Those skilled in the art are known in the technical scope disclosed by the present invention, it is contemplated that change or replacement should all be covered in this hair
Within bright protection scope.
Claims (4)
1. a kind of circle cerebral magnetic stimulation coil, which is characterized in that the circle cerebral magnetic stimulation coil is by Inside coil and outside
The current direction of portion's coil composition, the current direction of the Inside coil and the external coil is opposite.
2. circle cerebral magnetic stimulation coil as described in claim 1, which is characterized in that the circle cerebral magnetic stimulation coil
Inside coil and external coil are in the same plane, and spatially the center of the Inside coil and external coil is overlapped.
3. circle cerebral magnetic stimulation coil as described in claim 1, which is characterized in that the circle cerebral magnetic stimulation coil
Inside coil the number of turns Ni >=3；External coil the number of turns No >=3 of the circle cerebral magnetic stimulation coil.
4. circle cerebral magnetic stimulation coil as described in claim 1, which is characterized in that the circle cerebral magnetic stimulation coil
The inner circle radius of Inside coil is Ri1；The exradius of the Inside coil of the circle cerebral magnetic stimulation coil is Ri2；It is described
The inner circle radius of the external coil of round cerebral magnetic stimulation coil is Ro1；The external coil of the circle cerebral magnetic stimulation coil
Exradius be Ro2, Ro1 > Ri2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811629459.2A CN109621209A (en) | 2018-12-29 | 2018-12-29 | A kind of inside and outside reversal circle cerebral magnetic stimulation coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811629459.2A CN109621209A (en) | 2018-12-29 | 2018-12-29 | A kind of inside and outside reversal circle cerebral magnetic stimulation coil |
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| Publication Number | Publication Date |
|---|---|
| CN109621209A true CN109621209A (en) | 2019-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811629459.2A Pending CN109621209A (en) | 2018-12-29 | 2018-12-29 | A kind of inside and outside reversal circle cerebral magnetic stimulation coil |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110215609A (en) * | 2019-06-28 | 2019-09-10 | 清华大学天津高端装备研究院 | A kind of pulsed magnetic field bracket and electromagnetic stimulation device for experimental animal |
| CN113440731A (en) * | 2021-08-11 | 2021-09-28 | 成都理工大学 | Asymmetric special-shaped coil for craniocerebral electromagnetic stimulation and craniocerebral electromagnetic stimulation system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102727997A (en) * | 2012-06-25 | 2012-10-17 | 西安交通大学 | Double butterfly transcranial magnetic stimulation coil |
| CN105268104A (en) * | 2014-07-22 | 2016-01-27 | 北京脑泰科技发展有限公司 | Transcranial magnetic stimulator system of control stimulation coil end |
| CN109011161A (en) * | 2018-08-31 | 2018-12-18 | 天津工业大学 | A kind of reverse winding and its design method for transcranial magnetic stimulation |
| CN210904668U (en) * | 2018-12-29 | 2020-07-03 | 北京神畅科技发展有限公司 | Internal and external reverse circular transcranial magnetic stimulation coil |
-
2018
- 2018-12-29 CN CN201811629459.2A patent/CN109621209A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102727997A (en) * | 2012-06-25 | 2012-10-17 | 西安交通大学 | Double butterfly transcranial magnetic stimulation coil |
| CN105268104A (en) * | 2014-07-22 | 2016-01-27 | 北京脑泰科技发展有限公司 | Transcranial magnetic stimulator system of control stimulation coil end |
| CN109011161A (en) * | 2018-08-31 | 2018-12-18 | 天津工业大学 | A kind of reverse winding and its design method for transcranial magnetic stimulation |
| CN210904668U (en) * | 2018-12-29 | 2020-07-03 | 北京神畅科技发展有限公司 | Internal and external reverse circular transcranial magnetic stimulation coil |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110215609A (en) * | 2019-06-28 | 2019-09-10 | 清华大学天津高端装备研究院 | A kind of pulsed magnetic field bracket and electromagnetic stimulation device for experimental animal |
| CN113440731A (en) * | 2021-08-11 | 2021-09-28 | 成都理工大学 | Asymmetric special-shaped coil for craniocerebral electromagnetic stimulation and craniocerebral electromagnetic stimulation system |
| CN113440731B (en) * | 2021-08-11 | 2022-02-15 | 成都理工大学 | Asymmetric special-shaped coil for craniocerebral electromagnetic stimulation and craniocerebral electromagnetic stimulation system |
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Effective date of registration: 20201209 Address after: Chengkai international building, 355 Hongqiao Road, Xuhui District, Shanghai 200030 Applicant after: Song Jin Address before: Room 101, unit 1, building 6, Guodian Huayuan, yard 12, Anding Road, Chaoyang District, Beijing 100029 Applicant before: BEIJING SHENCHANG TECHNOLOGY DEVELOPMENT Co.,Ltd. |
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