KR101606911B1

KR101606911B1 - Handpiece for high frequency heat treatment equipemet

Info

Publication number: KR101606911B1
Application number: KR1020140050288A
Authority: KR
Inventors: 김춘영
Original assignee: 주식회사 유니온메디칼
Priority date: 2014-04-25
Filing date: 2014-04-25
Publication date: 2016-04-11
Also published as: KR20150123639A; WO2015163628A1

Abstract

And the cooling water is circulated in the handpiece so as to cool the electrode portion provided inside the handpiece and configured to apply the high frequency current to the affected portion to prevent overheating of the electrode portion, A high frequency thermal therapy device handpiece is disclosed which is capable of controlling the amount of energy required depending on the characteristics of the human body and the location of the tumor in each patient. A handpiece for use in a high-frequency thermal therapy apparatus, the handpiece being installed in a high-frequency thermal therapy apparatus and applying a high-frequency current to a diseased part, the handpiece comprising: a disk-shaped handpiece body; A handpiece handle coupled to the upper center of the handpiece body; A bolus that is coupled to the lower side of the handpiece body and is filled with cooling water supplied through the handpiece body; A high frequency current generated in the high frequency generating unit is applied to the affected part, and the high frequency generated in the high frequency generating unit is applied to the lower part of the handpiece body, And an electrode portion constituted by the electrode.

Description

[0001] HANDPIECE FOR HIGH FREQUENCY HEAT TREATMENT EQUIPEMET [0002]

[0001] The present invention relates to a handpiece for a high-frequency thermal therapy apparatus, and more particularly, to a handpiece having a structure in which cooling water is circulated inside a handpiece to cool an electrode unit installed in a handpiece and configured to apply a high- The temperature of the electrode part can be easily adjusted so as to prevent overheat of the electrode part and the temperature of the electrode part can be easily controlled and the patient can be controlled efficiently with respect to the amount of energy required according to the characteristics of the human body and the position of the tumor. Lt; / RTI >

The hyperthermia treatment for treating cancer is a treatment for increasing the metabolic rate of cancer cells by heating the cancer tissue and preventing the supply of oxygen to cancer cells, thereby inhibiting the proliferation of cancer cells and inducing suicide of cancer cells to destroy them.

These thermal treatments do not damage normal tissues, how to efficiently deliver heat only to cancerous tissues, how to heat the same area repeatedly, and how much heat energy is transferred in some way It is important to determine the amount of heat that can be accurately controlled, the amount of heat required for each individual, and the temperature that can be tolerated during treatment.

1 is a view showing a conventional thermal therapy apparatus.

As shown in FIG. 1, the conventional hyperthermia treatment apparatus 1 includes a divided treatment zone (10-1, 10-2), a handpiece support unit 20, a drive control unit 40, and a cooler 50. As shown in Fig.

Each of the treatment tables (10-1, 10-2) has respective elevating motors (not shown), and each elevating motor is controlled by an elevating control portion (not shown).

On the upper surface of the treatment table (10-1, 10-2), a slide mat (12) is provided. The slide mat 12 is mounted on the treatment table 10-1 or 10-2 so as to be movable independently in the longitudinal direction by manual operation and the slide mat 12 is provided with the slide mat 12, And a stop mechanism (not shown) for stopping the slide mat 12 at a predetermined position. The position detecting sensor is connected to a slide mat control unit (not shown), and the slide mechanism is controlled by the slide mat control unit. A support bar 14 is provided on each of the treatment zones (10-1, 10-2). The support bar 14 is provided on a surface 10a corresponding to the treatment table 10-1 or 10-2 and is movable in a horizontal direction of the slide mat 12 by a motor .

The handpiece support device 20 is configured to be rotatable to support the C arm 23 on a pedestal 21 formed in a C arm type and movable on a rail 29. Here, the C arm 23 is supported by the rails 23a on the rear side thereof and the rollers 24a of the pedestal 21. A chain 25 slightly longer than the rail 23 is provided along the rear surface 23a of the rail 23. Each end of the chain 25 is fixed to the end of the rail 23 And the chain 25 is hooked to the sprockets 24b and 24c in the pedestal 21 and the sprocket 24c is transmitted by the chain 26 to the rotation of the motor 27, The C arm 23 is rotationally driven by the arm 27.

On the other hand, the pedestal car 21 is mounted on the rail 29 through the car wheels 21b, and the wheel 21b is rotationally driven by the motor 21a.

Hand piece attaching portions 30-1 and 30-2 are respectively provided at the end portion of the C arm 23 and the hand piece attaching portions 30-1 and 30-2 are connected to the motors 31-1 and 31- 2) is built in

In the handpiece attaching portions 30-1 and 30-2, the handpiece 33-1 and the electrode portion 33-2 are attached to and detached from the affected part of the patient, and the handpiece and the electrode portions 33-1 and 33-2 -2) has an electrode. An arm 41 is attached to the drive control device 40 and an operation board 42 is attached to the front end of the arm 41. The operation board 42 has a display portion 42a and a button portion 42b Have.

However, in the conventional thermal therapy apparatus according to the related art, since the handpiece has no means for cooling or controlling the heat generated from the handpiece by cooling the heat radiated from the electrode, the temperature of the handpiece There is a problem that the procedure is interrupted and the procedure is repeated after the handpiece is cooled. In the worst case, there is a problem that the electrode portion may be broken or the patient may be burned during the procedure, There is a problem in that it is difficult to efficiently control the amount of energy required depending on the characteristics of the human body and the location of the tumor.

SUMMARY OF THE INVENTION The present invention has been conceived in order to solve the above problems, and it is an object of the present invention to provide a handpiece having a structure in which cooling water is circulated, The temperature of the electrode part can be easily controlled, and it is possible to efficiently control the required amount of energy according to the characteristics of the human body and the position of the tumor, Handpiece.

An object of the present invention is to provide a handpiece provided in a high-frequency thermal therapy apparatus and adapted to apply a high-frequency current to a diseased part, the handpiece comprising: A handpiece handle coupled to the upper center of the handpiece body; A bolus which is coupled to the lower side of the handpiece body and in which cooling water supplied through the handpiece body is filled; A high frequency current generated in the high frequency generating unit is applied to the affected part, and the high frequency generated in the high frequency generating unit is applied to the lower part of the handpiece body, The present invention can be achieved by providing a handpiece for a high-frequency thermal therapy apparatus, comprising:

Here, the bolus includes: a cover portion formed of a disk-shaped bottom plate and a cylindrical side plate extending upward along the edge of the bottom plate, the cover portion being filled with cooling water; Wherein an annular upper engaging groove is formed in a bottom surface of the handpiece body so that an upper end of the flange is fitted along an edge of the annular flange, A plurality of through holes are formed in the upper engaging groove at positions corresponding to the engaging holes, a through hole through which the cover is passed is formed at the center, a lower engaging groove is formed in the upper face to engage with a lower end of the flange, An annular lower coupling plate having a plurality of fastening holes formed at positions corresponding to the through holes is formed on a bottom surface of the lower coupling plate And a flange portion of the bolus is coupled to be received in the upper coupling groove of the handpiece body and the lower coupling groove of the lower coupling plate so that a screw inserted into the insertion hole of the handpiece body is inserted through the through hole of the upper coupling groove And the bolus is coupled to the handpiece body through the lower coupling plate.

An inlet port for supplying cooling water to the inside of the bolus is formed on one side of the upper surface of the handpiece body and an outlet port for discharging the cooling water inside the bolus is formed on the other side of the upper surface of the handpiece body, It is preferable that the cooling water is circulated inside the bolus through the outlet.

The handpiece body is formed with an engaging hole at the center thereof and an annular engaging step is formed at a lower end of the engaging hole. The handpiece handle is fitted to the engaging hole and then is seated on the engaging jaw, And a screw is inserted into the screw hole to be fastened to an electrode part which is in close contact with a lower surface of the handpiece body so that the electrode part is coupled to the lower surface of the handpiece body.

An annular cooling water inflow groove is formed in the bottom of the handpiece body and an annular cooling water circulation path is formed in which an electrode part is coupled to a bottom surface of the handpiece body to circulate cooling water to an upper side of the electrode part, The first and second annular first and second fitting grooves are formed on an upper surface of the first and second fitting grooves so as to be spaced from each other by a predetermined distance, And a sealing hole for sealing the inside and the outside of the cooling water inflow groove is formed in the upper surface of the handpiece body so as to supply cooling water to the cooling water inflow groove, And the cooling water introduced into the inlet is formed at the other side of the upper surface of the piece body, After circulating the cooling water circulation path group it is preferably configured to be discharged through the discharge port.

Further, it is preferable that a thermoelectric element attached to the upper surface of the electrode part and accommodated in the cooling water inflow groove of the handpiece body is further constructed.

In addition, a ceramic pad is provided between the electrode part and the thermoelectric element, a water jacket formed with a fixing groove for inserting and fixing the thermoelectric element is provided on the bottom surface of the thermoelectric element, and the water jacket is connected to the water jacket, A pump is preferably provided.

The handpiece for a high-frequency thermal processor according to the present invention has a structure in which cooling water is circulated inside a bolus, and is configured to cool an electrode part installed inside a bolus and configured to apply a high-frequency current to the affected part, So that the electrode unit can be cooled by the cooling water circulated through the cooling water circulation path. Thus, overheating of the electrode unit during the warm treatment through the handpiece is prevented.

Further, the present invention can easily adjust the temperature of the electrode part through cooling of the electrode part, and it is possible to efficiently control the amount of energy required according to the characteristics of the human body and the position of the tumor for each patient, Can be effective.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view of a conventional thermal therapy apparatus,
2 is an exploded perspective view of a handpiece for a high-frequency thermal therapy apparatus according to the present invention,
FIG. 3 is a front view of a handpiece for a high-frequency thermal therapy apparatus according to the present invention,
4 is an exploded cross-sectional view of a handpiece for a high-frequency thermal therapy apparatus according to the present invention,
FIG. 5 is an assembled cross-sectional view of a handpiece for a high-frequency thermal therapy apparatus according to the present invention,
6 is a view for explaining the use of a handpiece for a high-frequency thermal therapy apparatus according to the present invention,
7 is a view showing another preferred embodiment of a handpiece for a high-frequency thermal therapy apparatus according to the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The handpiece for a high-frequency thermal therapy apparatus according to the present invention is installed in a high-frequency thermal therapy apparatus and applies a high-frequency current to the affected area. In the high-frequency thermal therapy apparatus provided with the handpiece of the present invention, The detailed description of the high-frequency thermal therapy apparatus will be omitted. In addition, the handpiece for a high-frequency hyperthermia treatment according to the present invention can be used for the treatment of primary or metastatic tumors (for example, liver, spleen, kidney, abdomen), tumors of the intestinal tract, gynecologic tumors and pelvic tumors, Hereinafter, examples of the above tumors and cancers will be collectively referred to as affected part (A).

2 is a perspective view illustrating a handpiece for a high-frequency thermal therapy apparatus according to the present invention, FIG. 3 is an assembled front view of a handpiece for a high-frequency thermal therapy apparatus according to the present invention, FIG. 6 is a view for explaining the use of a handpiece for a high-frequency thermal therapy apparatus according to the present invention, and FIG. 7 is a cross- Fig. 5 is a view showing another preferred embodiment of a handpiece for a high-frequency thermal therapy apparatus according to the present invention.

2 to 5, a handpiece for a high-frequency thermal therapy apparatus according to the present invention includes a handpiece body 100, a handpiece handle 200, a bolus 300, and an electrode unit 400 .

The handpiece body 100 is provided in the form of a circular plate in which the components described later are installed.

The handpiece handle 200 is configured to be coupled to the center of the upper surface of the handpiece body 100. Here, the handpiece handle 200 is constructed so that a practitioner can grasp it and facilitate an operation, and the upper end thereof is configured to be coupled to a high-frequency thermal therapy apparatus. In addition, it is preferable that the inside of the handpiece handle 200 is formed hollow so that a wire connected to the electrode unit 400 described later can be passed.

The bolus 300 is configured to be coupled to the lower side of the handpiece body 100 and is filled with cooling water C supplied through the handpiece body 100. That is, since the bolus 300 may be damaged by erythema or an image due to heat generated in the electrode unit 400, which will be described later, The temperature of the electrode unit 400 is lowered.

Specifically, the bolus 300 is composed of a disk-shaped bottom plate 311 and a cylindrical side plate 312 extending upward along the edge of the bottom plate 311, And an annular flange part 320 bent outward from the upper end of the side plate 312 and having a plurality of insertion holes 321 formed on the upper side thereof. Since the bottom plate 310, which is the bottom surface of the bolus 300, is provided in a disc shape and can be adhered to the annular portion A in a wide area, it can be treated by covering the annular portion having a large area, The therapeutic effect is improved.

Here, the bolus 300 is assembled to the handpiece body 100 through the lower coupling plate 500. Specifically, an annular upper engagement groove 110 is formed on the bottom surface of the handpiece body 100 and is engaged with an upper end of the flange portion 320 along an edge thereof. In the upper engagement groove 110, A plurality of through holes 111 are formed at positions corresponding to the injection holes 320. A through hole 510 through which the cover 310 passes is formed at the center of the lower coupling plate 500 and a lower coupling groove 520 in which a lower end of the flange 320 is fitted is formed on an upper surface thereof. And a plurality of fastening holes 521 are formed in the bottom surface of the lower engaging groove 520 at positions corresponding to the through holes 111. The flange 320 of the bolus is coupled to the upper coupling groove 110 of the handpiece body 100 and the lower coupling groove 520 of the lower coupling plate 500 Next, the screw S inserted into the insertion hole 111 of the handpiece body is fastened to the fastening hole 521 of the lower coupling groove through the through hole 111 of the upper coupling groove. Then, the bolus 300 is coupled to the handpiece body 100 through the lower coupling plate 500.

An inlet 120 for supplying the cooling water C to the inside of the bolus 300 is formed on one side of the upper surface of the handpiece body 100. On the other side of the upper surface of the handpiece body 100, It is preferable that an outlet 130 through which the cooling water C in the russ 130 is discharged is formed. That is, after the cooling water C is introduced into the inlet 120 through the pump not shown, the cooling water C in the bolus 300 flows out through the outlet 130, (C) is circulated. Here, the cooling water (C) preferably includes an antifreeze solution having a very low freezing point.

The electrode unit 400 is coupled to a lower surface of the handpiece body 100 and installed inside the bolus 300. 6, the electrode unit 400 is disposed between the bolus 300 and the lower electrode unit 600 provided below the annulus A, and the high frequency generating unit 410 The high-frequency current generated in the antenna portion A is applied to the affected portion A. That is, a ring portion A is disposed between the bolus 300 and the lower electrode portion 600, a high-frequency current is applied to the ring portion A, and the electrode portion 400 and the lower electrode portion 600 are energized . Meanwhile, the electrode unit 400 may be an anode, and the lower electrode unit 600 may be a cathode. However, the present invention is not limited thereto, and the electrode unit 400 and the lower electrode unit 600 may be a cathode and an anode, respectively.

The high frequency current generated by the high frequency generating unit 410 and applied through the electrode unit 400 is preferably 13.56 MHz. The high frequency current is generated between the charged electrode unit and the lower electrode units 400 and 600 (A) of the human body located at the center of the body. Here, when the high-frequency current flows through the human body, a part where metabolism is active, that is, a part where ionized ion (sodium ion, calcium ion, etc.) is large, is excellent in electric conductivity and current flows intensively. For example, the high-frequency current flows along the extracellular fluid surrounding the cell membrane of each cancer cell having the ionized ion. At this time, the cancer cells are naturally destroyed and become necrotic when they reach a temperature of 38.5 ~ 42.0 degrees Celsius, unlike normal cells due to high frequency current. Therefore, even if the energy is concentrated on the affected part such as the cancer tissue, the patient can be automatically treated along the lesion tissue without the need of positioning using CT or MRI during the treatment. In addition, the therapeutic effect can be enhanced even when the anti-cancer drug and radiation therapy are concurrently performed. In the case where the anti-cancer drug and radiation treatment are difficult, it is possible to show the cancer treatment effect by only the thermal treatment, and by improving the pain caused by cancer, The amount of usage can be reduced.

An engaging hole 140 is formed at the center of the handpiece body 100 and an annular engaging step 141 is formed at a lower end of the engaging hole 140. The handpiece handle 200 is engaged with the engaging hole 140, A plurality of threaded holes 141a are formed in the coupling step 141 and a screw S is inserted into the threaded hole 141a, The electrode unit 400 is coupled to the lower surface of the handpiece body 100 by being fastened to the electrode unit 400 which is in close contact with the lower surface of the handpiece body 100.

Furthermore, it is preferable that the present invention further comprises a structure capable of further cooling the upper surface of the electrode unit 400. An annular cooling water inflow groove 151 is formed in the bottom of the handpiece body 100 so that when the electrode unit 400 is coupled to the bottom surface of the handpiece body 100, And an annular cooling water circulation path 150 in which the cooling water C is circulated upward is formed. An annular first and second fitting grooves 410 and 420 are formed on the upper surface of the electrode unit 400 so as to be spaced apart from each other by a predetermined distance and have a sealing ring R inserted therein. The sealing ring R coupled to the first and second fitting grooves 410 and 420 is brought into close contact with the bottom surface 100 of the handpiece body so that the cooling water flowing in the cooling water inflow groove 151, It is preferable to seal the inside and the outside of the casing.

An inlet 160 for supplying the cooling water C to the cooling water inflow groove 151 is formed on one side of the upper surface of the handpiece body 100 and a cooling water inflow groove The cooling water C injected into the inlet 160 is circulated through the cooling water circulation path 150 and then discharged through the outlet 170. In this case, desirable. Accordingly, the present invention can primarily cool the electrode unit 400 through the cooling water circulating in the bolus 300, and can cool the electrode unit 400 through the cooling water circulating the cooling water circulation path 150 The electrode unit 400 can be cooled secondarily, and the cooling efficiency of the electrode unit 400 is remarkably improved.

Furthermore, it is preferable that the thermoelectric device 700 further comprises a thermoelectric element 700 attached to the upper surface of the electrode unit 400 and accommodated in the cooling water inflow groove 151 of the handpiece body 100. Here, the thermoelectric element (cold / heat semiconductor) mainly includes a thermistor as a device using a temperature change of electric resistance, a device using a Jecke effect as a phenomenon in which an electromotive force is generated by a temperature difference, And a Peltier element which is a device using the Peltier effect as a phenomenon. In the present invention, a Peltier element which causes a Peltier effect is used as the thermoelectric element. The Peltier effect is a phenomenon in which, when two types of metal ends are connected and a current is caused to flow therebetween, one terminal absorbs heat and the other terminal generates heat in accordance with the current direction. If a semiconductor such as bismuth (Bi), tellurium (Te) or the like having different electric conduction methods is used in place of the two kinds of metals, a Peltier element having a high heat absorbing and exothermic effect can be obtained. This allows the endothermic and exothermic switching depending on the current direction, and the heat absorption amount and the heat generation amount can be adjusted according to the amount of current. In the present invention, when the temperature of the electrode part rises to a predetermined temperature or higher by using a Peltier element as a thermoelectric element, the temperature of the electrode part 400 is controlled by cooling the electrode part.

7, a ceramic pad 800 may be provided between the electrode unit 400 and the thermoelectric element 700. [ Here, the ceramic pad 800 is made of an insulating material, so that the RF generated from the electrode unit 400 is cut off to prevent malfunction of the thermoelectric device 700 and damage to the thermoelectric device 700 made of a semiconductor .

A water jacket 900 having a fixing groove 910 for inserting and fixing the thermoelectric element 700 is provided on the bottom surface of the thermoelectric element 700. The water jacket 900 is connected to the water jacket 900, The pump 920 is preferably circulated. Therefore, since the thermoelectric element 700 is enclosed by the water jacket 900, the heat absorbed by the thermoelectric element 700 is discharged through the heat exchange with the water jacket 900 to cool the thermoelectric element 700.

In the handpiece for a high-frequency thermal therapy apparatus according to the present invention, the patient first lies comfortably on the treatment table of the apparatus, aligns two active electrodes 400 and 600 on the tumor site (0), and starts treatment. At this time, a high frequency of 13.56 MHz passes through the tumor and generates heat. Therefore, cancer cells selectively induce tumor-sensitive temperature of 42 degrees Celsius only in cancer tissues using a non-invasive energy control method using a particularly sensitive 13.56 MHz high frequency to directly induce tumor necrosis or suicide, The immune system can be activated. Therefore, the present invention is also effective for deep cancer such as pancreatic cancer, and cancer can be expected to have a higher thermal effect (i.e., therapeutic effect) by emitting radiofrequency from both sides, centering on cancer tissue,

In the present invention, the cooling water is circulated inside the bolus, and the cooling water circulation path is provided inside the bolus to cool the electrode part configured to apply the high-frequency current to the affected part, And the upper surface of the electrode unit can be cooled through the cooling water circulated through the electrode unit, thereby preventing overheating of the electrode unit during thermal treatment through the handpiece. Further, the present invention can easily adjust the temperature of the electrode part through cooling of the electrode part, and it is possible to efficiently control the amount of energy required according to the characteristics of the human body and the position of the tumor for each patient, There are advantages to be able to.

While the present invention has been particularly shown and described with reference to specific embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Anyone who can afford it will know.

100: handpiece body 200; Handpiece handle
300: Bolus 400: Electrode part
500: lower coupling plate 600: lower electrode part
700: thermoelectric element 800: ceramic pad
900: Water jacket

Claims

A handpiece provided in a high-frequency thermal therapy apparatus and configured to apply a high-frequency current to a affected part,
A disc-shaped handpiece body; A handpiece handle coupled to the upper center of the handpiece body; A bolus which is coupled to the lower side of the handpiece body and in which cooling water supplied through the handpiece body is filled; And is disposed between the lower electrode portion provided on the lower side of the bulb and the bulb, and is configured to apply a high-frequency current generated in the high-frequency generating portion to the affected portion And an electrode part formed on the substrate,
An inlet for supplying cooling water to the inside of the bolus is formed on one side of the upper surface of the handpiece body and an outlet for discharging the cooling water inside the bolus is formed on the other side of the upper surface of the handpiece body, Through which the cooling water is circulated,
The bolus includes a cover portion formed of a disk-shaped bottom plate and a cylindrical side plate extending upward along the edge of the bottom plate, the cover portion being filled with cooling water therein, and the cover portion being bent outward from the upper end of the side plate And an annular upper engagement groove is formed in the bottom surface of the handpiece body along an edge thereof so that an upper end portion of the annular upper engagement groove is engaged with the upper end of the flange portion, A plurality of through holes are formed in the grooves at positions corresponding to the insertion holes, a through hole through which the cover is passed is formed at the center, and a lower engaging groove is formed in the upper surface of the flange to engage with a lower end of the flange, And a plurality of fastening holes are formed on the surface of the lower coupling plate at positions corresponding to the through holes, A flange portion of the bolus is coupled to be received in the upper engaging groove of the handpiece body and the lower engaging groove of the lower engaging plate so that a screw inserted into the engaging hole of the handpiece body is engaged with the lower engaging portion through the through hole of the upper engaging groove, And the bolus is coupled to the handpiece body through the lower coupling plate,
Wherein an annular cooling water inflow groove is formed in a bottom surface of the handpiece body and an annular cooling water circulation path for circulating cooling water to an upper side of the electrode unit when the electrode unit is coupled to the bottom surface of the handpiece body is formed, The first and second annular first and second fitting grooves are formed to be spaced apart from each other by a predetermined distance and the sealing ring is inserted in the first and second fitting grooves. When the electrode unit is coupled to the bottom surface of the handpiece body, Wherein the sealing ring is in close contact with the bottom surface of the handpiece body to seal the inside and the outside of the cooling water inflow groove, an inlet for supplying cooling water to the cooling water inlet groove is formed at one side of the upper surface of the handpiece body, The cooling water introduced into the inlet port is discharged to the outside through the cooling Wherein the circulation loop is circulated through the water circulation path and then discharged through the discharge port.

delete

The method according to claim 1,
Wherein the handpiece body is formed with an engaging hole at the center thereof and an annular engaging jaw is formed at a lower end of the engaging hole so that the handpiece grip is engaged with the engaging jaw,
A plurality of screw holes are formed in the coupling jaw and a screw is inserted into the screw hole so as to be fastened to an electrode part which is in close contact with a lower surface of the handpiece body, Handpiece for high frequency hyperthermia treatment.

delete

The method according to claim 1,
And a thermoelectric element attached to an upper surface of the electrode portion and accommodated in a cooling water inflow groove of the handpiece body.

The method according to claim 6,
A ceramic pad is provided between the electrode portion and the thermoelectric element,
Wherein a top surface of the thermoelectric element is provided with a water jacket having a fixing groove for inserting and fixing a thermoelectric element thereinto, and a pump coupled to the water jacket to circulate the cooling water.