JPH05245217A - High frequency hyperthermia device - Google Patents

Abstract

PURPOSE:To enable to warm the depth of the human body effectively and see that it operates always in the best warming condition. CONSTITUTION:This device is composed of ferrite cores 2, which catches a substance to be warmed, coil windings 3-1 and 3-2, which are wound on the ferrite cores 2, a magnetic shield plate 4, exciting power generators 5-1 and 5-2, which supplies the coil windings 3 with power, impedance coordinators 6-1 and 6-2, a magnetic field monitor M, which detects the intensity of the magnetic field of the substance 1 to be warmed, etc., and a controller 7, which controls the output power of an exciting power generator, obtain the output of this magnetic field monitor M.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hyperthermia treatment apparatus that treats, for example, a cancer tumor using high frequency waves, and more particularly to a high frequency heat treatment apparatus characterized by an induction heating method and an induction heating control method.

[0002]

2. Description of the Related Art A radiofrequency hyperthermia device is a device for noninvasively heating a deep part of a human body by utilizing electromagnetic energy. The high-frequency hyperthermia treatment apparatus is provided with a magnetic pole portion having a four-pole structure of a ferrite core and an air-core coil. There is a heating device.

FIG. 8 shows a high-frequency thermotherapy device having a magnetic pole portion having a four-pole structure of a ferrite core. This device has magnetic pole parts 21 _-1 to 2 with four poles of a ferrite core.
1 to ₄ and a high frequency power generator 22. The magnetic poles 21 _{-1 to} 21 _-4 are installed so as to sandwich the heated body 23. Here, the magnetic pole portions 21 _-1 , 21 _-2 and the magnetic pole portion 2
Reversed coils are wound around the ferrite cores at 1 _-3 and 21 _-4 respectively. Therefore, the magnetic poles 21 _-1 and 21
_-2 and the magnetic pole 21 _-3 and the magnetic pole 21 _-4 always have opposite polarities. Further, each coil is wound so that the magnetic poles 21 _-1 and 21 _-4 and the magnetic poles 21 _-2 and 21 _-3 have opposite polarities, respectively, and a closed circuit is formed by the coils as a whole, and the high frequency power generation unit is formed. It is connected to 22.

When a high-frequency current is passed through each coil having the above structure, the magnetic pole 21 _-1 to the magnetic pole 21 _are moved at certain timing.
_-4, and from the magnetic pole 21 _-3 toward the magnetic pole 21 _-2 , magnetic fluxes φ ₁₄ and φ ₃₂ are generated, and an eddy current flows through the heated body 23 based on these magnetic fluxes. Since the eddy current is superimposed in the center 23 _-1 of the heating member 23, the target site of the pressurized Yutakatai central portion 23 _-1 will be be effectively warmed.

[0005]

[Problems to be Solved by the Invention]
For the heating method using the light core 4 pole configuration and the air core coil,
There are the following problems. (1) That is, in the case of the device of FIG._-1And magnetic pole
21_-FourAnd the magnetic pole 21 _-2And magnetic pole 21_-3Becomes opposite polarity
Together with two adjacent magnetic poles (that is, the magnetic pole 21_-1And magnetic pole
21_-2And magnetic pole 21_-3And magnetic pole 21_-Four) Also has opposite polarity
Then, a magnetic flux toward the adjacent magnetic pole is also generated, and the magnetic flux
Eddy current due to bundle cancels effective eddy current near the target site
There is a problem that it flows in the right direction.

FIG. 9 shows the direction of eddy currents in the heated body.
The magnetic pole 21_-1To magnetic pole 21_-FourHeading to
Magnetic flux φ₁₄Eddy current based on₁₄Then, the magnetic pole 21_-3From
Magnetic pole 21_-2Magnetic flux toward₃₂Eddy current based on₃₂
And the magnetic pole 21 _-1To magnetic pole 21_-2Heading to
Magnetic flux φ₁₂Eddy current based on₁₂Then, the magnetic pole 21_-3From
Magnetic pole 21_-FourMagnetic flux toward₃₄Eddy current based on₃₄
Is expressed in. As is clear from Fig. 9, with the target part
Eddy current i₁₄And i₃₂One flowing from top to bottom
Eddy current i₁₂And i₃₄Will flow in the opposite direction
Weakened. (2) Also, the arrangement of the coil that generates the magnetic field and the magnetic shield
The passage of the eddy current due to the arrangement of the magnetic plate and the magnetic reflector.
Change significantly, so it takes time to install them
There is also the problem of being lost. (3) In addition, the heating target is moved slightly due to the slight movement of the object to be heated.
The turn fluctuates and the target area cannot be heated stably.
There is also a problem. (4) To increase the heating efficiency, increase the coil diameter.
However, if the diameter of the coil is increased, the heating part
As the rank spreads, there are difficulties in installation. Therefore, heating
Because the efficiency cannot be improved so much,
There is also a problem that large power is required.

The present invention has been made in view of these problems, and provides a high-frequency thermotherapy device capable of effectively heating a deep part of the human body and always operating in the best heating condition. The purpose is to provide.

[0008]

In order to achieve the above-mentioned object, a high-frequency thermotherapy device according to claim 1 has two magnetic cores installed so as to sandwich a body to be heated, and each of the magnetic cores. The coil winding is wound so that the end faces in the same direction have the same polarity, and the high-frequency power generator that supplies high-frequency power to the coil winding.

In addition to the above, the high-frequency thermotherapy device according to a second aspect of the present invention further comprises a magnetic reflector installed in a space in the vicinity of the magnetic cores and on the side opposite to the object to be heated. There is. In addition to the above, the high frequency thermotherapy device according to claim 3 further includes: a magnetic field monitor for detecting magnetic flux from the two coil portions at an appropriate position; _-1 generation of the two high frequency powers according to an output of the magnetic field monitor. And a power control unit that controls the heating temperature and / or the heating portion of the object to be heated by changing the output power of each unit.

[0010] RF thermal treatment device according to claim 4, in addition to the above, a current monitor section for detecting the respective current values of the coil winding, _-2 the two high-frequency power according to the output of the current monitoring unit And a power control unit that changes the output power of the generation unit and controls the heating temperature and / or the heating portion of the object to be heated. In addition to the above, the high-frequency thermotherapy device according to claim 5 further includes: a temperature sensor unit for detecting the temperature of the object to be heated; and _{-3 of the} two high-frequency power generation units according to the output from the temperature sensor unit. And a power control unit that controls the heating temperature and / or the heating portion of the object to be heated by changing the output power.

[0011] RF thermal treatment device according to claim 6, in addition to the above, it is installed between the target heating body and the magnetic core, and the magnetic shield plate capable of varying the size thereof and installation position, _-4 And a shield plate control unit for changing the position and size of the magnetic shield plate according to the output of the magnetic field monitor to control the heating temperature and / or the heating portion of the heated object.

In addition to the above, the high-frequency hyperthermia treatment apparatus according to claim 7 changes the position and size of the magnetic shield plate according to the output of the _-5 temperature sensor to change the heating temperature and the heating temperature of the body to be heated. And / or a shield plate control unit that controls a heating portion. In addition to the above, the high-frequency hyperthermia treatment apparatus according to claim 8 changes the positions of the two magnetic core portions according to the output of the _-6 magnetic field monitor, and heats and / or heats the heated body. And a core position control unit for controlling the parts.

In addition to the above, the high-frequency hyperthermia treatment apparatus according to a ninth aspect of the present invention changes the sandwiching position of the two magnetic cores in accordance with the output of the _-7 temperature sensor, And / or a core position control unit that controls the heating portion.

[0014]

[Operation and effect of the invention]

[High-frequency hyperthermia treatment device according to claim 1] Two magnetic cores are installed so as to sandwich a body to be heated. The coil winding is wound so that the end faces of the magnetic cores in the same direction have the same polarity.

The high frequency power generator supplies high frequency power to this coil winding. In this way, since there are two magnetic pole portions and the end faces in the same direction of each magnetic pole portion always have the same polarity, the magnetic flux is superposed at the central portion of the object to be heated and a large eddy current is generated. Since the effective eddy current does not decrease based on the magnetic flux between the adjacent magnetic poles as in the case of the 4-pole structure, it is possible to efficiently heat the target site.

Further, since two magnetic cores are sufficient, the structure of the magnetic pole portion and the arrangement of the cores can be easily controlled. In addition, the core can be placed next to the patient, reducing the pressure on the patient. [High-frequency hyperthermia treatment device according to claim 2] The magnetic reflector is installed in a space in the vicinity of each magnetic core and on the side opposite to the heated body. Therefore, in addition to the effect of the first aspect of the invention, the present invention has the effect that the target site can be heated more efficiently. There is also an advantage that the heating pattern can be changed only by changing the installation position of the magnetic reflection plate.

[High Frequency Thermotherapy Device According to Claim 3] Two high frequency power generators are provided, and each supplies high frequency power to each coil winding.
Therefore, the magnetic flux densities from the coil portions can be set to different values. Note that this point is the same in each of the inventions of claims 3 to 5.

The magnetic field monitor detects the magnetic flux from the two coil portions at an appropriate position. _{The -1} power control unit changes the output power of each of the two high frequency power generation units according to the output of the magnetic field monitor.
In this way, the magnetic field monitor and the power control unit are provided, and
Since the high-frequency power generators are limited to operate independently of each other, in the present invention, in addition to the effect of the invention of claim 1, the heating temperature of the object to be heated and / or the heating portion is appropriately set. The effect that can be controlled to.

Further, since the electric power control unit is provided, stable heating is always possible, and since the control unit can perform desired heating, setting of each device before heating can be completed in a shorter time than before. Can be made. This effect is
The invention of claims 3 to 9 including a controller is common. [High-frequency hyperthermia treatment device according to claim 4] The current monitor unit detects each current value of the coil winding.

_{-2 The} power control unit changes the output power of the two high frequency power generation units according to the output of the current monitor unit. Therefore, also in this invention, there is an effect that the heating temperature of the object to be heated and / or the heating portion can be appropriately controlled. [High-frequency hyperthermia treatment device according to claim 5] The temperature sensor unit detects the temperature of the object to be heated.

_{-3 The} power control unit changes the output power of the two high frequency power generation units according to the output from the temperature sensor unit. Since the temperature of the object to be heated is directly detected in this invention, the heating temperature and the heating portion can be controlled more precisely than in the inventions according to claims 3 and 4. [High Frequency Thermotherapy Device According to Claim 6] The magnetic shield plate is installed between the magnetic core and the object to be heated, and its size and installation position can be changed. Here, the magnetic shield plate is made of a material having a high magnetic permeability, and the magnetic flux generated in each coil is concentrated on the magnetic shield plate, so that a magnetic shield effect for the heated object is produced. The magnetic shield effect can be changed by changing the size and the installation position of the magnetic shield plate.

_{-4 The} shield plate control unit changes the position and size of the magnetic shield plate according to the output of the magnetic field monitor. Therefore, the magnetic field strength of the magnetic field monitor portion of the object to be heated can be controlled to an arbitrary value, and therefore the heating temperature of the object to be heated can also be controlled to an appropriate value. By changing the position and size of the magnetic shield plate, the strength of the magnetic flux in the body to be heated can be changed appropriately. Therefore, in the present invention, it is sufficient to provide only one system of high-frequency power generator. Become. This point is common to the inventions of claims 6 to 9.

[High Frequency Thermotherapy Device According to Claim 7] _{-5 The} shield plate controller changes the position and size of the magnetic shield plate according to the output of the temperature sensor. Therefore, the heating temperature of the object to be heated and / or the heating portion can be controlled more precisely to a desired value. [High-frequency hyperthermia treatment apparatus according to claim 8] _{-6 The} core position control unit changes the positions of the two magnetic core units according to the output of the magnetic field monitor. If the position of the magnetic core portion changes, the heated portion of the object to be heated and the like change, so these can be controlled to desired values.

[High Frequency Thermotherapy Device According to Claim 9] _{-7 The} core position control unit changes the sandwiching position of the two magnetic cores according to the output of the temperature sensor. In this way, since the sandwiching position of the magnetic core is controlled based on the temperature of the object to be heated, the heating temperature and the like of the object to be heated can be controlled more directly.

[0025]

The present invention will be described in more detail based on the following examples. [First Embodiment] FIG. 1 shows a high-frequency thermotherapy apparatus according to a first embodiment of the present invention. This device
Two ferrite cores 2 _-1 , 2 _-2 installed so as to sandwich the object to be heated 1 and a coil winding 3 _-1 wound so that end faces of the ferrite cores in the same direction have the same polarity. , 3 _-2 and a high frequency power generator (not shown) for supplying high frequency power to the coil windings 3 _-1 , 3 _-2 . Further, a magnetic shield plate 4 is installed between the coil portion 3 and the heated body 1. In this device, the high-frequency power generator may supply the same power to the coil windings 3 _-1 , 3 _-2 , or may supply different values of power.

Regardless of the configuration of the high-frequency power generator, the high-frequency magnetic field generated in the coil portion 3 always has the same direction of magnetic flux, so that the magnetic flux is superposed at a specific portion (target portion) of the heated body 1. Will be. An eddy current is generated in the object to be heated 1 by the action of the high-frequency magnetic field. However, since the eddy current value is large near the target site, the target site can be effectively heated and treated. The magnetic shield plate 4
Therefore, unnecessary magnetic flux is not applied to the heated body 1.

As described above, in this embodiment, the eddy currents are combined in the central portion of the object to be heated 1, so that effective deep heating can be performed. Further, since the number of cores is two, it becomes easy to control the structure of the device and the arrangement of the cores. Furthermore, since the core is placed beside the patient, the patient's feeling of pressure is reduced. [Second Embodiment] FIG. 2 shows a high-frequency hyperthermia treatment apparatus according to a second embodiment of the present invention. The characteristic of this device is that a magnetic reflection plate 5 is provided in the space opposite to the body to be heated 1. Since the magnetic flux to the object to be heated 1 is strengthened by the amount of the magnetic reflection plate 5, according to this embodiment, the target site can be heated more effectively than in the case of the first embodiment. Of course, the heating pattern can be controlled by changing the position of the magnetic reflection plate 5.

[Third Embodiment] FIG. 3 shows a high frequency thermotherapy apparatus according to a third embodiment of the present invention.
This device includes a ferrite core 2 _-1 , 2 _-2 , a coil winding 3 _-1 , 3 _-2 , a magnetic shield plate 4, an exciting power generator 5 _-1 , 5 _-2, and an exciting power generator. Impedance matching device 6 _-1 , 6 _-2 for matching the output part of 5 and the coil winding part 3
When the control for controlling the magnetic field monitor M for detecting the field strength of the heating body 1 and the ferrite core portion 2, the excitation power generator 5 _-1 to obtain the output of the magnetic field monitor M, the output power of _5-2 Bowl 7
It consists of and.

In this device, the magnetic field monitor M and the controller 7 are combined.
Since it is provided, the magnetic field strength of each part of the magnetic field monitor M is set to a desired value.
Excitation power generator 5_-1, 5_-2To operate
Therefore, the target part of the object to be heated 1 is appropriately heated.
It is possible to [Fourth Embodiment] FIG. 4 shows a fourth embodiment of the present invention.
1 illustrates a frequency hyperthermia treatment device. With the third embodiment
In comparison, the feature of this device is that the magnetic field monitor M is not provided.
Instead of coil winding 3_-1, 3_-2The current value of
There is a current monitor A for this purpose. Controller 7 is current
It operates by receiving the output of monitor A, and coil winding 3_-1, 3
_-2Excitation power generator 5 so that the current value of_-1，
5_-2Control the output of.

[Fifth Embodiment] FIG. 5 shows a high frequency thermotherapy apparatus according to a fifth embodiment of the present invention.
Compared with the third embodiment, the characteristic of this device is that a magnetic field monitor M is not provided, but a temperature sensor 8 for detecting the temperature of the heated object 1 is provided. The controller 7 operates by receiving the output of the temperature sensor 8 and controls the outputs of the excitation power generators 5 _-1 , 5 _-2 so that the target portion of the heated body 1 has a desired temperature. Therefore, with this device, the temperature of the target site and the like can be controlled more precisely than in the third and fourth embodiments.

[Sixth Embodiment] FIG. 6 shows a high frequency thermotherapy apparatus according to a sixth embodiment of the present invention.
When compared with the third embodiment, the characteristic of this device is that the magnetic shield plate 4 is a variable-sized magnetic shield plate 9 _-1 , 9 _-2.
The point is that the coil parts 3 _-1 , 3 _-2 are connected in parallel and the impedance matching device 6 and the excitation power generation part 5 are made into one type. The magnetic shield plates 9 _-1 , 9 _-2 are divided into three parts (9a, 9b, 9c), and the parts 9a and 9c are configured to open and close by the action of the motor Mo.

Each motor Mo can be separately controlled by the controller 7 to open and close the magnetic shield plates 9 _-1 , 9 _-2 separately. Therefore, the coil unit 3 is connected in parallel and the excitation power generation unit is connected. Even if there is only one type such as 5, it is possible to freely control the heating area and the like. [Seventh Embodiment] As an apparatus of another mode of the sixth embodiment, the magnetic field monitor M may not be provided, and the temperature sensor 8 may be provided in the heated object 1 instead (see FIG. 6 and FIG. 5).

In this apparatus, since the controller 7 controls the magnetic shield plate 9 so that the temperature of the target site becomes a desired value, the temperature of the target site can be controlled more precisely than in the sixth embodiment. [Eighth Embodiment] FIG. 7 shows a high frequency thermotherapy apparatus according to an eighth embodiment of the present invention. Compared with the third embodiment (see FIG. 3), the characteristic of this device is that the installation position of the ferrite core portion 2 can be changed by the action of the motor Mo.

The controller 7 operates by receiving the output of the magnetic field monitor M, and controls the installation position of the ferrite core portion 2 so that the output value of the magnetic field monitor M becomes a desired value. If the installation position of the ferrite core part M changes, the position of the heated target part also changes. Therefore, in this embodiment as well, the excitation power generation parts 5, 6 may be one system, and each coil part 3 _-1. , 3 _-2 are sufficient because they are connected in parallel.

[Ninth Embodiment] As an apparatus of another embodiment of the eighth embodiment (see FIG. 7), the magnetic sensor M is not provided, and instead, the temperature center 8 is provided in the heated object 1. (See FIG. 7 and FIG. 5). In this device, since the controller 7 controls the installation position of the ferrite core portion 2 so that the temperature of the target portion becomes a desired value, the temperature of the target portion can be controlled more accurately than in the eighth embodiment.

[Brief description of drawings]

FIG. 1 is a diagram showing a high-frequency hyperthermia treatment apparatus according to a first embodiment of the present invention.

FIG. 2 illustrates a high frequency thermotherapy apparatus according to a second embodiment of the present invention.

FIG. 3 shows a high frequency thermotherapy apparatus according to a third embodiment of the present invention.

FIG. 4 illustrates a high frequency thermotherapy device according to a fourth embodiment of the present invention.

FIG. 5 illustrates a high frequency thermotherapy device according to a fifth embodiment of the present invention.

FIG. 6 illustrates a high-frequency thermotherapy device which is a sixth embodiment of the present invention.

FIG. 7 illustrates a high frequency thermotherapy apparatus according to an eighth embodiment of the present invention.

FIG. 8 illustrates a high-frequency thermotherapy device that employs a four-pole induction heating method.

9 is a diagram showing an eddy current in a heated body in the apparatus of FIG.

[Explanation of symbols]

1 Heated object 2 _-1 , 2 _-2 Ferrite core 3 _-1 , 3 _-2 Coil winding 5, 6 High frequency power generator 7 Power controller M Magnetic field monitor

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[Procedure amendment]

[Submission date] October 2, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Claims

[Correction method] Change

[Correction content]

[Claims]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction content]

[0008]

In order to achieve the above-mentioned object, a high-frequency thermotherapy device according to claim 1 has two magnetic cores installed so as to sandwich a body to be heated, and each of the magnetic cores. The coil winding is wound such that the end faces in the same direction have different polarities, and the high-frequency power generator that supplies high-frequency power to the coil winding.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0014

[Correction method] Change

[Correction content]

[0014]

[Operation and Effect of the Invention] [High-frequency thermotherapy device according to claim 1] The two magnetic cores are installed so as to sandwich the object to be heated. The coil winding is wound so that the end faces of the magnetic cores in the same direction have different polarities.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0015

[Correction method] Change

[Correction content]

The high frequency power generator supplies high frequency power to this coil winding. As described above, since there are two magnetic pole portions and the end faces in the same direction of each magnetic pole portion always have different polarities, eddy currents are superposed on the central portion of the heated body. Since the magnetic flux between the two magnetic poles is generated outside the living body, it does not hinder the deep heating, so that the target site can be efficiently heated.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Name of item to be corrected] 0025

[Correction method] Change

[Correction content]

[0025]

The present invention will be described in more detail based on the following examples. [First Embodiment] FIG. 1 shows a high-frequency thermotherapy apparatus according to a first embodiment of the present invention. This device
Two ferrite cores 2 _-1 , 2 _-2 installed so as to sandwich the object to be heated 1 and a coil winding 3 _-1 wound so that end faces in the same direction of the ferrite cores have different polarities. ，
_3-2 and a high-frequency power generator (not shown) for supplying high-frequency power to the coil windings _3-1 , _3-2 . Further, a magnetic shield plate 4 is installed between the coil portion 3 and the heated body 1. In this device, the high-frequency power generator may supply the same power to the coil windings 3 _-1 , 3 _-2 , or may supply different values of power.

[Procedure correction 6]

[Document name to be amended] Statement

[Correction target item name] 0026

[Correction method] Change

[Correction content]

Regardless of the structure of the high-frequency power generator, the high-frequency magnetic field generated in the coil section 3 always has the opposite magnetic flux direction, so that an eddy current is generated at a specific portion (target portion) of the heated body 1. As a result, they will be overlapped, and the target site will be effectively treated by heating. The magnetic shield plate 4
Therefore, unnecessary magnetic flux is not applied to the heated body 1.

[Procedure Amendment 7]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 6

[Correction method] Change

[Correction content]

[Figure 6]

Claims (9)

[Claims] 1. A magnetic core which is placed so as to sandwich a body to be heated, a coil winding which is wound so that end faces in the same direction of the magnetic core have the same polarity, and the coil winding. And a high-frequency power generator for supplying high-frequency power to the high-frequency thermotherapy device. 2. A magnetic core installed between two magnetic cores, a coil winding wound such that end faces of the magnetic cores in the same direction have the same polarity, and the coil winding. A high-frequency heat generator, comprising: a high-frequency power generator that supplies a high-frequency power to the magnetic core; and a magnetic reflector installed in a space in the vicinity of the magnetic cores and on the side opposite to the object to be heated. Treatment device. 3. Two magnetic cores installed so as to sandwich a body to be heated, coil windings wound so that end faces in the same direction of each magnetic core have the same polarity, and this coil winding. Two high-frequency power generators that supply high-frequency power to each, a magnetic field monitor that detects the magnetic flux from the two coil units at appropriate positions, and one of the two high-frequency power generators according to the output of the magnetic field monitor. A high-frequency hyperthermia treatment apparatus comprising: a power control unit that controls the heating temperature and / or the heating portion of the object to be heated by changing each output power. 4. Two magnetic cores installed so as to sandwich a body to be heated, coil windings wound so that end faces in the same direction of each magnetic core have the same polarity, and this coil winding. Two high-frequency power generators that supply high-frequency power to each, and a current monitor that detects each current value of the coil winding,
An electric power control unit that changes the output power of the two high-frequency power generation units according to the output of the current monitor unit and controls the heating temperature and / or the heating portion of the heated object. High frequency hyperthermia treatment device. 5. A magnetic core which is placed so as to sandwich a body to be heated, a coil winding which is wound so that end faces of the magnetic core in the same direction have the same polarity, and the coil winding. Two high-frequency power generators that supply high-frequency power to each, a temperature sensor unit that detects the temperature of the object to be heated, and output power of the two high-frequency power generators according to the output from the temperature sensor unit. And a power control unit for controlling a heating temperature and / or a heating portion of the body to be heated. 6. Two magnetic cores installed so as to sandwich a body to be heated, coil windings wound so that end faces of the magnetic cores in the same direction have the same polarity, and the coil windings. A high-frequency power generator that supplies high-frequency power to each of them, a magnetic shield plate that is installed between the magnetic core part and the object to be heated and that can change its size and installation position, and the two coil parts. A magnetic field monitor that detects the magnetic flux at an appropriate position, and the position and size of the magnetic shield plate are changed according to the output of this magnetic field monitor to control the heating temperature and / or heating portion of the heated object. A high-frequency hyperthermia treatment device, comprising: 7. Two magnetic cores installed so as to sandwich a body to be heated, coil windings wound so that end faces in the same direction of each magnetic core have the same polarity, and this coil winding. A high-frequency power generator that supplies high-frequency power to each, a magnetic shield plate that is installed between the magnetic core portion and the object to be heated, and the size and installation position of which can be changed, and the temperature of the object to be heated. And a shield plate control unit that changes the position and size of the shield plate according to the output of the temperature sensor to control the heating temperature and / or the heating portion of the object to be heated, An apparatus for high-frequency hyperthermia, comprising: 8. Two magnetic cores installed so as to sandwich a body to be heated, coil windings wound so that end faces in the same direction of the magnetic cores have the same polarity, and the coil windings. A high-frequency power generator that supplies high-frequency power to each, a magnetic field monitor that detects the magnetic flux from the two coil parts at appropriate positions, and the positions of the two magnetic core parts are changed according to the output of the magnetic field monitor. And a core position control unit that controls a heating temperature and / or a heating portion of the object to be heated. 9. Two magnetic cores installed so as to sandwich a body to be heated, coil windings wound so that end faces of the magnetic cores in the same direction have the same polarity, and the coil windings. A high-frequency power generation unit that supplies high-frequency power to each of them, a temperature sensor unit that detects the temperature of the object to be heated, and the sandwiching positions of the two magnetic cores are changed according to the output of the temperature sensor,
A high-frequency hyperthermia treatment apparatus comprising: a core position control unit that controls a heating temperature and / or a heating portion of the object to be heated.