JP4602145B2 - High-frequency heating treatment device - Google Patents

Description

  The present invention relates to a high-frequency heat treatment apparatus, and more particularly, to a high-frequency heat treatment apparatus that presses an electrode against an affected area and performs heat treatment on the affected area with an electromagnetic wave of a very short wave (VHF band) or a microwave (SHF band) through the electrode. .

As an example of a high-frequency heating treatment device, there is a capacitor type that heats an affected area at high frequency. For example, in the high-frequency heating treatment device lead disclosed in Patent Document 1, a pair of electrodes can be easily attached to the affected part of the human body. Specifically, when the affected part is a hand or foot, the electrode connecting part is bent according to the thickness of the hand or foot to sandwich the affected part. When the affected part is a shoulder or a waist, the electrode connecting part is bent along the phase, and the electrode is fixed to the affected part of the human body with a belt. Here, the electrode of the conductor is exemplified by a substantially square one, and a pair having the same area is used.
JP 2001-46520 A (FIG. 3, paragraph 0013)

  However, in the high frequency heating treatment device disclosed in Patent Document 1, since the area of the conductor is the same, if the affected area is different on the back of the hand, the left and right of the waist, etc., there is no treatment. High-frequency heating is performed up to the better part, and the power utilization efficiency is lowered. On the other hand, there are cases where local treatment is intensively performed with a small-area electrode and a large-area affected area is desired to be treated with a large-area electrode.

  On the other hand, when capacitively coupled to the human body with a conductor (electrode) having a different electrode area, the thermal sensation tends to be felt weakly with the smaller conductor, which may cause discomfort to the patient. In addition, the balance between the electrodes is lost, and common mode noise is generated, which may affect the surrounding electrical products.

  Therefore, an object of the present invention is to provide a high-frequency heating treatment apparatus capable of simultaneously performing heat treatment on an affected area of a small area and an affected area of a large area with the same thermal sensation. It is another object of the present invention to provide a high-frequency heating treatment apparatus capable of simultaneously performing heat treatment on an affected area of a small area and an affected area of a large area at an optimum temperature.

  In order to solve the above-described problems, in the high-frequency heating treatment apparatus of the present invention, when high-frequency heat treatment is performed on a diseased part with a pair of electrodes that are in contact with the affected part, an insulating material is provided between one or both electrode surfaces and the affected part surface. Is inserted, and the affected area of the small area and the affected area of the large area are heated to the same temperature or the optimum temperature, respectively.

Specifically, a high-frequency power amplifier that amplifies a high-frequency signal, a pair of conductor electrodes that heat the affected area by the output of the high-frequency power amplifier, at least one of the conductor electrodes, and the affected area surface that is heated thereby and a the inserted insulating material between the area between Shirubeko electrodes varies, with an insulating material to be inserted between the both Shirubeko electrodes and these diseased surfaces, one Shirubeko electrode And the thickness of the insulating material inserted between the surface of the affected part heated by this and the thickness of the insulating material inserted between the other conductor electrode and the affected part surface heated by this, The dielectric constants of both the insulating materials are equal, and the one conductor electrode is the electrode having the larger area, and the thickness of the insulating material inserted between the surface of the affected part heated by this is large, This is the electrode with the smaller area. Characterized in that the thickness of the inserted insulating material between the affected area table portion to be heated more small.

  ADVANTAGE OF THE INVENTION According to this invention, the high frequency heating treatment apparatus which can carry out a thermal treatment of the affected area of a small area and the affected area of a large area simultaneously with an isothermal or optimal temperature can be provided. In addition, according to the present invention, it is possible to provide a high-frequency heating treatment apparatus capable of simultaneously performing heat treatment on an affected area having a small area and an affected area having a large area at an optimum temperature. In particular, by balancing the sense of warmth on the large area electrode side and the small area electrode side, common mode noise can be suppressed and the influence on peripheral electrical products can be reduced.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a block diagram of the high-frequency heating treatment apparatus of the present embodiment. The high-frequency heating treatment apparatus includes a high-frequency power amplifier 10 that amplifies a high-frequency signal, a pair of conductor electrodes 14a, 14b, or 14c that heats the affected area by the output of the high-frequency power amplifier, and at least one of the conductor electrodes. Thus, an insulating material (not shown) inserted between the surface of the affected part to be heated is provided. The conductor electrode is a metal flat plate, a mesh, or the like, and the insulating material is an insulating flat plate, a mesh, a cloth, or the like, specifically, felt, rubber, or the like.

  Further, the high-frequency heating treatment apparatus is connected to the output of the high-frequency power amplifier 10 and to the variable impedance circuit 12 connected to the pair of conductor electrodes 14a, 14b, or 14c, and the impedance of the variable impedance circuit 12 Impedance control means 12 for matching the impedance of the pair of conductor electrodes 14a, 14b, or 14c, the insulating material, and both of the affected parts, and the area of the conductor electrode, And a memory 18 for storing the impedance of the electric circuit to be treated determined by the dielectric constant and thickness of the insulating material, and an input unit 20 for inputting the area of the conductor electrode and the dielectric constant and thickness of the insulating material. May be.

  The high frequency power amplifier 10 amplifies the power of a high frequency signal such as 13.56 MHz, 27.12 MHz, 40.68 MHz, or 2.45 GHz, which is assigned to a high frequency medical device.

The variable impedance circuit 12 outputs the output of the high-frequency power amplifier 10 to the conductor electrodes 14a, 14b, or 14c. Since the output of the high-frequency power amplifier 10 is high-frequency, it is necessary to match the impedance of the electric circuit to be treated which is composed of the insulating material and both affected parts.
Here, the impedance of the electric circuit to be treated is determined by the electric resistance, dielectric constant, dielectric loss, conductor electrode area, dielectric constant and thickness of the insulating material of each part of the human body. Therefore, the variable impedance circuit 12 includes a resistor, a capacitor, and a coil, and performs impedance matching by changing the resistance value, capacitance, and inductance according to the impedance of the electric circuit to be treated.

  The impedance control means 16 performs impedance matching by changing the resistance value, capacitance, inductance resistance, capacitor, and coil value of the variable impedance circuit 12.

The circuit constants of the variable impedance circuit 12 can be realized, for example, by manually changing constants such as a variable resistor, a capacitance variable capacitor, and a roller inductor. The circuit constant for realizing the impedance matching may be determined empirically in advance for each treatment site, conductor electrode, and insulating material. In this case, the impedance control means 16 includes a knob or a changeover switch for manually changing constants such as a variable resistor, a variable capacitance capacitor, and a roller inductor.
The circuit constant of the variable impedance circuit 12 can be automatically changed. Therefore, the input means 20 and the memory 18 are used. The input unit 20 is, for example, a numeric keypad, and receives input of a treatment site, a conductor electrode, an insulating material, and an impedance matching value, and the input value is stored in the memory 18. In place of the treatment site, the conductor electrode, and the insulating material, the type number of the conductor may be determined by the treatment site, the conductor electrode, and the insulation material, and the conductor number and the corresponding impedance matching value may be input. When a conductor to be used at the time of treatment is determined from among several kinds of conductors, for example, a conductor number is input to the input means 20, and further, the conductor number is input to the impedance control means 16. The impedance control means 16 searches the memory 18 based on the conductor number and obtains a corresponding impedance matching value and a circuit constant that realizes the impedance matching value. Then, the circuit constant of the variable impedance circuit 12 is changed to the circuit constant read from the memory 18. In this case, the impedance control means 16 is a microcomputer that controls constants such as a variable resistor, a variable capacitance capacitor, and a roller inductor by a computer program.

  FIG. 2 is a cross-sectional view showing a treatment mode. In FIG. 2A, the affected part 24 such as a hand or a leg is sandwiched between electrode pairs 21 and 23. In FIG. 2A, electrode pairs 21 and 23 are arranged on the same surface of the affected part 24 such as a shoulder and a waist. 2 (A) and 2 (B), the insulating material 22 is provided only on the large area electrode side 21 to relieve the thermal sensation that occurs on the large area electrode side, and the thermal sensation that occurs on the small area electrode side. Are equal. The insulating material may be disposed between both electrodes and the surface of the affected area, and various thicknesses and dielectric constants thereof are selected, and the temperature on the large area affected area is reduced depending on the purpose of treatment. The temperature is adjusted to be equal to the temperature on the area affected area side, or to be lower or higher than the temperature on the small area affected area side.

  FIG. 3 is a plan view of an example of a conductor including conductor electrodes (left and right electrode portions) and an insulating material. The left electrode portion 31 and the right electrode portion 32 constitute a conductor electrode 14a, 14b, or 14c (FIG. 1), and an insulating material is disposed on each electrode portion 31, 32 as described above. is there. The cover 30 is an insulating cloth or the like, and encloses the left electrode part 31 and the right electrode part 32. The belt 35 is supported by a belt support member 36, and fixes the conductor electrodes 14a, 14b, or 14c (FIG. 1) to the human body. The cord 33 is connected to the variable impedance circuit 12 by a plug 34, and supplies high-frequency power to a pair of conductor electrodes 14a, 14b, or 14c (FIG. 1).

It is a block diagram of a high frequency heating treatment apparatus. It is sectional drawing which shows a treatment aspect. It is a top view of an example of a conductor.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 High frequency power amplifier 12 Variable impedance circuit 14a, 14b, 14c Conductor electrode 16 Impedance control means 18 Memory 20 Input means 31 Left electrode part 32 Right electrode part 33 Cord 34 Plug 35 Belt 36 Belt support member

Claims (1)

A high frequency power amplifier that amplifies the power of the high frequency signal;
A pair of conductor electrodes for heating the affected area by the output of the high-frequency power amplifier;
Comprising an insulating material inserted between at least one of the conductor electrodes and the affected surface heated by the electrode;
Area between the Shirubeko electrodes varies,
Insulating material inserted between both conductor electrodes and the affected surface,
The thickness of the insulating material inserted between one conductor electrode and the affected surface heated by this, and the insulating material inserted between the other conductor electrode and the affected surface surface heated by this Unlike thickness,
The dielectric constant of both insulation materials is equal,
The one conductor electrode is an electrode having a larger area, and the thickness of the insulating material inserted between the surface of the affected part heated by this is large,
The other conductor electrode is an electrode having a smaller area, and the thickness of the insulating material inserted between the surface of the affected part heated by this is small, and the high-frequency heating treatment apparatus according to claim 1.

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