CN104056358B - A kind of magnetic stimulator chiller - Google Patents
A kind of magnetic stimulator chiller Download PDFInfo
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- CN104056358B CN104056358B CN201410262285.6A CN201410262285A CN104056358B CN 104056358 B CN104056358 B CN 104056358B CN 201410262285 A CN201410262285 A CN 201410262285A CN 104056358 B CN104056358 B CN 104056358B
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- 238000009834 vaporization Methods 0.000 claims abstract 2
- 230000008016 vaporization Effects 0.000 claims abstract 2
- 238000001816 cooling Methods 0.000 claims description 22
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Abstract
A kind of magnetic stimulator chiller, including stimulating bat and coil chiller。Stimulating bat includes stimulating coil (4), coil case (2) and handle (19)；Power supply (1) is connected by wire (3) and stimulating coil (4)；Handle (19) and coil case (2) connect；In coil chiller, condenser (14) is positioned at reserving liquid tank (6) top。Stimulating coil (4) and reserving liquid tank (6) are positioned in coil case (2)。First outlet (8) of reserving liquid tank (6) is connected with second entrance (10) of condenser (14), and first entrance (7) of reserving liquid tank (6) is connected with the second outlet (9) of condenser (14)。Cooling medium walks heat in coil adstante febre boiling vaporization zone, steam exports (8) along first and enters condenser (14), becomes liquid again, and return to reserving liquid tank along the second outlet (9) after condensation, so circulation, reduces the purpose of coil temperature。
Description
Technical field
The present invention relates to a kind of medical apparatus and instruments, particularly to the chiller of a kind of magnetic stimulator。
Background technology
The beginning of the eighties in 19th century, British scientist Bake et al. begins one's study and utilizes Neural stem cell that cerebral nerve activity is intervened, and the motorium of human brain was successfully have stimulated first in 1985, record motor cortex Evoked ptential (Motor-evokedpotentials, MEPs) with myoelectricity。This also indicates that transcranial magnetic stimulation (TranscranialMagneticStimulation, TMS) enters the arena of history。Along with the improvement of high power device development and circuit, occurring in that repetition magnetic stimulator (RepetitiveTranscranialMagneticStimulation, rTMS) end of the eighties, this stimulator is per second can produce 1 100 pulses。Magnetic stimulator is the principle according to electromagnetic induction, the energy stored is discharged at short notice in stimulating coil in capacitor, forms pulse current, and then forms pulsed magnetic field and and induction field in its vicinity in space。When stimulating coil stimulates human body, generation faradic current in human nerve tissue, and make the membrane depolarization of neurocyte, produce action potential。Difference according to stimulation location can produce different effects, and as stimulated cerebral cortex primary motor area, cortex excitement can be conducted to limb muscle。Utilize electromyograph(EMG recordable to Motion Evoked Potential, utilize the wave amplitude of Evoked ptential and incubation period can evaluate neural function。Also can stimulate other regions corticocerebral that the disease such as depression, migraine is treated。
Prior art is the electric current that (hundreds of is delicate) passes into kilo-ampere in stimulating coil within the extremely short time, coil can produce substantial amounts of heat in the process, especially for high frequency repetitive stimulation (more than 5Hz), heat in coil will be accumulated and cause that temperature constantly raises, and the rising of temperature can increase coil resistance, change current waveform, affect therapeutic effect。More serious consequence is to make because coil temperature is too high the insulating barrier of coil aging and affect the life-span of equipment。Therefore heat dissipation problem is current urgent problem。
In prior art, the issue handling mode for stimulating coil heating has four kinds:
(1) adopting multiple coil to take turns to operate, namely heating takes off, and changes another。But which increase the complexity of operation, and frequently more emat coil easily causes the abrasion of interface, and equipment is caused damage。
(2) external air-cooled, namely at coil surface, fan is installed。The method shortcoming is: winding volume and weight are excessive, makes troubles to the fixing of coil and operation, and cooling effect is bad。
(3) external water-cooled, its feature is similar to external air-cooled, is namely provided with water-cooling circulating system at coil surface。Its shortcoming is similar with air-cooled。And external water-cooled adds the risk of high pressure electric leakage。
(4) built-in liquid is cold, and the method adopts interior cold line circle, single tubing coiling form。Although the method can reach good cooling effect, but owing to using tubing, cause coil-winding cross-sectional area and reduce and resistance increase, add energy loss。Compared to the solid lenticular wire of equal cross-sectional area, winding volume significantly increases, and is not suitable for the coil more for the number of turn。
Summary of the invention
It is an object of the invention to overcome the shortcoming of prior art, it is proposed to a kind of safe and reliable, cooling effectiveness is high, the magnetic stimulator of the cooling means that can use continuously。
Stimulating bat of the present invention is built with the reserving liquid tank containing cooling medium, reserving liquid tank lower surface is close to and stimulating coil upper surface is completely covered, cooling medium produces steam in the boiling of stimulating coil adstante febre, take away the heat that stimulating coil produces, steam is cooled back to liquid after the first outlet of reserving liquid tank enters condenser, the second outlet along condenser returns to reserving liquid tank and reclaims, and so circulates, reduces the purpose of coil temperature。
The present invention is by the following technical solutions:
A kind of magnetic stimulator, including stimulating bat and coil chiller。Described stimulating bat includes stimulating coil, coil case and handle。Stimulating coil is connected with power supply by wire。Described coil chiller includes reserving liquid tank, cooling medium and the condenser that described cooling medium is cooled down。Described condenser is positioned at above reserving liquid tank。Described reserving liquid tank is provided with the first entrance, the first outlet, and described condenser is provided with the second entrance and the second outlet。Described first entrance and the second outlet connect, and described first outlet is connected with the second entrance。Cooling medium circulation in the path that described reserving liquid tank and condenser are constituted。The lower surface of described reserving liquid tank is close to the upper surface of stimulating coil, stimulating coil and reserving liquid tank and is positioned in coil case。Being provided with condensing tube in described condenser, the two ends of condensing tube respectively the 3rd entrance and the 3rd exports, and condensing tube is the water row that copper tube is made。3rd entrance is connected with cooling delivery side of pump, and the 3rd outlet is connected with the entrance of cooling pump。Cooling pump and condensing tube constitute path, and cooling water circulates wherein。
Described reserving liquid tank is that moulded heat-conductive insulated plastics is made, and the lower surface of reserving liquid tank is completely covered stimulating coil upper surface。
Described cooling medium is nonconducting low-boiling point liquid, such as unsaturation Hydrocarbon and their halogen derivants such as the saturated hydrocarbons such as freon, ammonia, ethane, hexafluoro dichloro Tetramethylene. isocyclic compound, ethylene。
Described condenser needs to maintain static, and its position is above reserving liquid tank。Reserving liquid tank the first entrance and the first outlet are connected with the second outlet of condenser and the second entrance respectively by flexible pipe。Naturally can rise in condenser along the first outlet, flexible pipe and the second entrance after cooling medium evaporation。Naturally can drop in reserving liquid tank along the second outlet, flexible pipe and the first entrance along difference in height after cooling medium condensation。Described flexible pipe can ensure that stimulating bat moves in little scope。
Angle between stimulating bat and horizontal plane is not more than 45 degree, can by stimulating bat location to desired location during treatment。
The workflow of apparatus of the present invention is as follows:
The first step, opens cooling pump, makes the circulation in the cool cycles unit that cooling pump and condensing tube are constituted of cooling water；
Second step, adjusts stimulating bat position to required point of care, and the lower surface of stimulating bat is tangent with patient's scalp；
3rd step, opening power starts Neural stem cell, and stimulating coil in use generates heat, and liquid in reserving liquid tank is heated；
4th step, after stimulating coil reaches uniform temperature, liquid boiling in reserving liquid tank, produce steam and take away heat, steam enters condenser by the first outlet and the second entrance；
5th step, steam carries out heat exchange with the cooling water in condensing tube within the condenser, and cooling medium is returned to liquid by gaseous state；
6th step, the cooling medium of liquid enters reserving liquid tank along the second outlet and the first entrance, completes a circulation。
By above five steps, cooling medium is circulated by transpiration-cooled mode in reserving liquid tank and condenser, takes away the heat that coil produces simultaneously, reduces the purpose of coil temperature。
Owing to have employed above technical scheme, make what the present invention possessed to have the beneficial effects that:
(1) present invention employs transpiration-cooled refrigerating method, cooling medium forms steam in the boiling of coil adstante febre and takes away heat, and steam forms again liquid cooling medium and returns to reserving liquid tank after cooling down in condenser。Make whole stimulating coil continue to be cooled down, improve the stability of stimulating coil work。
(2) reserving liquid tank adopts moulded heat-conductive insulated plastics, cooling medium not with coil contact, and cooling medium itself is also insulation, it is to avoid the danger of electric leakage, improves safety。
(3) described condenser needs to maintain static, and stimulating bat can move in little scope, it is allowed to there is certain angle between stimulating bat and horizontal plane, this angle is not more than 45 degree, it is ensured that can by stimulating bat location to desired location during treatment。Owing to reserving liquid tank is positioned at inside stimulating bat, this moveable design is not available for prior art。
Accompanying drawing explanation
Fig. 1 is the structural representation of magnetic stimulator of the present invention；
Fig. 2 is the flow chart cooling down water work process in magnetic stimulator chiller of the present invention；
Fig. 3 is the flow chart of cooling medium work process in magnetic stimulator chiller of the present invention。
Detailed description of the invention
Fig. 1 show an embodiment schematic diagram of magnetic stimulator of the present invention, and magnetic stimulator of the present invention includes stimulating bat and chiller。Described stimulating bat includes stimulating coil 4, coil case 2 and handle 19, and power supply 1 is connected with stimulating coil 4 by wire 3, and handle 19 and coil case 2 connect。Chiller includes reserving liquid tank 6, cooling medium 5 and the condenser 14 that cooling medium 5 is cooled down。Reserving liquid tank 6 has the first entrance 7 and the first outlet 8。Condenser 14 is provided with the second outlet 9, the second entrance 10 and condensing tube 13, and the two ends of condensing tube 13 are the 3rd entrance 11 and the 3rd outlet 12 respectively。First outlet 8 and the first entrance 7 are by flexible pipe 16 respectively with the second entrance 10 and the second outlet 9 connection。3rd entrance 11 and the 4th entrance 12 connect respectively at outlet 17 and the water inlet 18 of cooling pump 15。During use, operator hold handle 19, make stimulating bat move over patients head 20, until it reaches required stimulation sites。
Cooling medium 5 is circulated by transpiration-cooled mode in the path that reserving liquid tank 6 and condenser 14 are constituted, when the cooling medium in reserving liquid tank 6 is heated by stimulating coil 4 work adstante febre, when being heated to a certain degree, cooling medium 5 boiling produces steam and takes away heat, steam enters condenser 14 along the first outlet 8 and the second entrance 10, cooling water in steam and condensing tube 13 condenses after carrying out heat exchange and returns to liquid, and liquid cooling medium is back to reserving liquid tank 6。
Cooling water in condensing tube 13 realizes cooling water circulation by external cooling pump 15。
Fig. 2 show in magnetic stimulator chiller of the present invention to cool down the flow chart of an embodiment of water work process:
Step 201: open cooling pump 15, makes cooling water continuously outflow cooling pump 15；
Step 202: cooling water exits into condensing tube 13 from cooling pump 15；
Step 203: the steam in condenser 14 and the cooling water in condensing tube 13 carry out heat exchange, and cooling water takes away heat, and cooling medium condenses and returns to liquid；
Step 204: cooling water flow out of condensing tube 13 and be back to cooling pump 15。
Fig. 3 show in magnetic stimulator chiller of the present invention the flow chart of an embodiment of cooling medium work process:
Step 301: opening power 1, stimulating coil 4 is started working, and stimulating coil 4 starts heating；
Step 302: when stimulating coil generates heat to a certain extent, the cooling medium in reserving liquid tank 6 comes to life generation steam；
Step 303: steam takes away heat, and ascends into condenser 14；
Step 304: steam and the cooling water in condensing tube 13 carry out heat exchange, and cooling water takes away heat, and cooling medium 5 condenses and returns to liquid；
Step 305: condensed cooling medium 5 returns to reserving liquid tank 6；
Step 306: so repeatedly, until system reaches steady statue。
Claims (3)
1. a magnetic stimulator chiller, it is characterised in that described magnetic stimulator chiller adopts evaporating and cooling method refrigeration；Described magnetic stimulator chiller includes stimulating bat and coil chiller；Described stimulating bat includes stimulating coil (4), coil case (2) and handle (19)；Power supply (1) is connected by wire (3) and stimulating coil (4)；Handle (19) and coil case (2) connect；Described coil chiller includes reserving liquid tank (6), cooling medium (5) and the condenser (14) that cooling medium (5) is cooled down；Condenser (14) is positioned at reserving liquid tank (6) top；Stimulating coil (4) and reserving liquid tank (6) are positioned in coil case (2)；Reserving liquid tank (6) has the first entrance (7) and the first outlet (8)；Condenser (14) is provided with the second outlet (9), second entrance (10) and condensing tube (13), described first outlet (8) is connected with the second entrance (10), and described first entrance (7) exports (9) with second and is connected；Described reserving liquid tank (6) is positioned at inside stimulating bat, and stimulating bat can move, and the angle between stimulating bat and horizontal plane is not more than 45 degree；Described cooling medium is in the boiling vaporization of coil adstante febre and takes away heat, steam exports (8) along first and enters condenser (14), liquid is become again after condensation, and export (9) along second and naturally decline return to reserving liquid tank along difference in height, so circulation, reduces the purpose of coil temperature；Described condenser (14) is additionally provided with the 3rd entrance (11) and the 3rd outlet (12)；3rd entrance (11) is connected with the outlet of cooling pump (15), 3rd outlet (12) is connected with the entrance of cooling pump (15), the water row that condensing tube (13) between 3rd entrance (11) and the 3rd outlet (12) is made for copper tube, plays the purpose increasing steam with condensing tube contact area；Cooling pump (15) and condensing tube (13) constitute path, and cooling water circulates in path；Described cooling medium is saturated hydrocarbon or the halogen derivant of cyclic compound or unsaturation Hydrocarbon or saturated hydrocarbon and cyclic compound and three kinds of compounds of unsaturation Hydrocarbon。
2. magnetic stimulator chiller as claimed in claim 1, it is characterised in that described reserving liquid tank (6) is made up of moulded heat-conductive insulated plastics, and the lower surface of reserving liquid tank (6) is close to and covers the upper surface of stimulating coil (4)。
3. magnetic stimulator chiller as claimed in claim 1, it is characterised in that the top of described the second entrance (10) is close to the top of condenser (14), it is prevented that backflow after cooling medium condensation。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410262285.6A CN104056358B (en) | 2014-06-12 | 2014-06-12 | A kind of magnetic stimulator chiller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410262285.6A CN104056358B (en) | 2014-06-12 | 2014-06-12 | A kind of magnetic stimulator chiller |
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| Publication Number | Publication Date |
|---|---|
| CN104056358A CN104056358A (en) | 2014-09-24 |
| CN104056358B true CN104056358B (en) | 2016-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410262285.6A Expired - Fee Related CN104056358B (en) | 2014-06-12 | 2014-06-12 | A kind of magnetic stimulator chiller |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112274780A (en) * | 2020-11-19 | 2021-01-29 | 王昕� | Force compensation device and method of TMS treatment equipment externally connected with cable |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101947359A (en) * | 2010-09-16 | 2011-01-19 | 武汉依瑞德医疗设备新技术有限公司 | Magnetic field stimulator and cooling method thereof |
| CN203253060U (en) * | 2013-03-04 | 2013-10-30 | 深圳英智科技有限公司 | Water-circulation cooling apparatus outside magnetic stimulation coil |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2459157B (en) * | 2008-04-17 | 2010-10-13 | Magstim Co Ltd | Magnetic stimulators and stimulators coils |
| DE112008004049T5 (en) * | 2008-10-31 | 2012-06-06 | Nexstim Oy, | Magnetic stimulation coils with electrically conductive structures |
| CN103028193B (en) * | 2012-12-18 | 2015-07-22 | 深圳英智科技有限公司 | Semiconductor cooling device of transcranial magnetic stimulation coil |
| CN203507320U (en) * | 2013-08-30 | 2014-04-02 | 李明宙 | Transcranial magnetic stimulation device |
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2014
- 2014-06-12 CN CN201410262285.6A patent/CN104056358B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101947359A (en) * | 2010-09-16 | 2011-01-19 | 武汉依瑞德医疗设备新技术有限公司 | Magnetic field stimulator and cooling method thereof |
| CN203253060U (en) * | 2013-03-04 | 2013-10-30 | 深圳英智科技有限公司 | Water-circulation cooling apparatus outside magnetic stimulation coil |
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| CN104056358A (en) | 2014-09-24 |
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