JP2001046522A - Probe for ultrashort-wave curer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a probe for an ultrashort-wave curer that can conduct ultrashort-wave treatment in spot even for a narrow seat of disease like stiff shoulder, and that gives little calorification during the ultrashort-wave treatment. SOLUTION: In the probe for an ultrashort-wave curer that is connected to output terminals of the curer proper through a cord and warms a facing human seat of disease with Joule heat caused by eddy current, a printed coil substrate 14 having a wiring pattern formed in vortex, the first circuit board 16 that is connected to the printed coil substrate 14 and equipped with the first electrode plate 16a and the second circuit board 16 that faces first electrode plate 16a to form a capacitance are provided, where the printed coil substrate 14 faces the human seat of disease to be warmed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a frequency range of 10 to 50.
The present invention relates to an improvement in a conductor used in an ultra-high frequency wave treatment device which irradiates a human body with an ultra-high frequency band electromagnetic wave of MHz and performs thermal treatment by a heat-transfer effect generated in the body.

[0002]

2. Description of the Related Art FIG. 4 is a block diagram showing the configuration of a conventionally known ultrahigh frequency wave therapeutic device. In the figure, an oscillation circuit 1 has a fundamental frequency of an ultrashort wave as an output, that is, an ISM (Industrial).
Scientific and Medical equipment), frequencies assigned to high-frequency medical equipment, for example, 27.12.
It oscillates at 13.56 MHz and 40.68 MHz. In addition, of the frequencies assigned to the high-frequency-using medical device in the ISM, 2.45 GHz is called a microwave, which has a higher frequency band than an ultrashort wave. The amplification circuit 2 amplifies the signal output from the oscillation circuit 1 to a sufficient voltage, and the power amplification circuit 3
The output signal of the amplifier circuit 2 is amplified to a specified power of about 50 W.

The specified power is a value which does not increase to a temperature at which cells of a human body necrotize, for example, 42 degrees Celsius, and is a temperature required for hyperthermia treatment, for example, 38 degrees Celsius, against the cooling effect of the blood flow of the human body. It is recommended that the value be increased to a certain degree. In particular, patients with sensory nerve paralysis, such as diabetic patients, do not feel heat even if the tissue temperature rises excessively. Become.

The output matching circuit 4 adjusts the matching between the human body impedance and the characteristic impedance of the transmission line, eliminates harmonic components with respect to the output fundamental frequency, and supplies power to the conductor 6 with maximum efficiency. The adjusting means 5
The characteristic impedance of the transmission line of the output matching circuit 4 is adjusted using a variable capacitor or the like that varies the capacitance. The lead 6
It has one electrode plate in which a spiral coil is formed, and exerts a heating effect to a deep part of an affected part by the action of Joule heat by eddy current.

In the device configured as described above, the guide 6 is first applied to the affected part. Then, the affected part such as the shoulder, the waist, and the knee comes into contact with the guide 6. Since the load impedance applied to the ultra-high-frequency wave therapeutic device differs depending on the difference in the dielectric constant or loss of each part of the human body, the output matching circuit 4
Is adjusted to match the impedance of the human body part to be treated. Then, the ultra-high frequency treatment using the ultra-high frequency treatment device is started.

Incidentally, as another type of the lead 6, a pair of capacitors is capacitively coupled to form an impedance circuit with respect to the treatment device main body. Japanese Utility Model Publication No. 3-21254 and Japanese Patent Publication No. 6-4908, which are proposed by the present applicant.
The one disclosed in Japanese Patent Publication No. 0 is known. Tokuho 6-4
The conductor disclosed in Japanese Patent Publication No. 9080 is basically a coil type, in which a tape-shaped electrode is wound around an arm or a leg, and a microwave treatment is performed using a spiral electric field method.

[0007]

By the way, since the conventional apparatus is intended for a case where an operator performs an ultra-short-wave treatment on a patient like a hospital or a clinic, a conductor having a diameter of about 10 cm is attached to a human body by a fixed belt. Had a structure to do. However, there is a customer's desire to receive ultra-short wave treatment even at home. The problem here is that, even in the case of a narrow affected area such as a stiff shoulder, if the structure is such that it can be subjected to ultrashort wave treatment in a spot, there is no possibility that the area other than the area that needs to be treated will be affected by the ultrashort wave, and the affected area will not The quality of life (QOL) of the patient is lower than when using ultra-short wave treatment.
e) is to increase.

The range in which the matching between the human body impedance and the characteristic impedance of the transmission line can be adjusted by the output matching circuit 4 is limited. If the impedance is not taken, there is a problem in that the conductor generates heat during the microwave treatment, and the patient cannot continue the treatment. The present invention solves the above-described problems, and can perform ultrashort wave treatment in a spot even in the case of a narrow affected area such as stiff shoulder,
An object of the present invention is to provide a guide for an ultra-short-wave treatment device that generates less heat during ultra-short-wave treatment.

[0009]

According to the present invention, there is provided an ultrashort-wave therapeutic device according to the present invention, which is connected to an output terminal of a therapeutic device main body through a cord as shown in FIG. Of the ultrashort-wave therapeutic device, which is heated by Joule heat caused by eddy current, has a printed coil board 14 having a spirally formed wiring pattern, and a first coil connected to the printed coil board 14 and having a first electrode plate 16a. And a second circuit board 16 which forms a capacitor in opposition to the first electrode plate 16a, and wherein the printed coil board 14 faces a local part of a human body to be heated. is there.

In the device configured as described above, the printed coil board faces the human body surface and heats a local part of the human body by Joule heat due to eddy current. Since the first and second electrode plates are provided on the side opposite to the human body facing surface of the printed coil board, the size of the conductor can be reduced. Also, the first
In addition, since the second electrode plate also functions as a heat radiating plate, impedance matching cannot be satisfactorily achieved, and even if the conductor generates heat, it does not become excessively hot, thereby increasing the reliability as a therapeutic device.

Preferably, the impedance of the printed coil board and the capacitance between the first and second electrodes include the human body impedance and the conductor in the driving current frequency band of the treatment device main body. It is preferable to match the characteristic impedance of the transmission line. First and second
By forming a capacitor with the electrode plate of and making the capacitance value that matches the inductance of the printed coil board,
The matching adjustment between the human body impedance and the characteristic impedance of the transmission line can be easily performed. Further, when the first and second circuit boards are configured to be mounted on the printed coil board so as to be relatively movable with respect to each other, the adjustment to the capacitance value matching the inductance of the printed coil board can be performed. it can.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. 1A and 1B are configuration diagrams illustrating an embodiment of the present invention, in which FIG. 1A is a front view, and FIG. 1B is a cross-sectional view. In the figure, a case 10 has a shape that is easy for a patient or an operator to operate with one hand, and has a cup shape, for example. The front cover 12 is provided on the surface of the case 10 facing the human body part, and covers the printed coil board 14. The printed coil board 14 has a spirally formed wiring pattern, and the number of turns of the conductive wire is, for example, 5 to 10 turns. Compared with the case of one turn, the thermal effect by the eddy current is obtained by penetrating deeper. The printed circuit board 16 is a pair of two printed circuit boards.
4 are mounted inside the case 10, and are provided with electrode plates 16a and 16b, respectively. Electrode plate 16a,
Reference numeral 16b designates a pair of two electrodes constituting a parallel electrode and acting as a capacitor, one of which is connected to the output terminal of the treatment device main body by a cord 20, and the other is a printed coil board 14
Connected to the wiring pattern.

The stand mounting portion 18 is for mounting the case 10 on a stand. The stand fixes the lead in a predetermined position at a predetermined position. For example, when the patient sits down and heats his shoulder, the lead is fixed at the position of the shoulder. With the use of the stand, the operator does not need to support the guide for a long time, and the thermotherapy can be easily performed.

The cord 20 is a set of two conductors and has a length of, for example, about 1.5 m. One lead of the cord 20 is connected to one end of the spiral wiring pattern of the printed coil board 14, and the other lead is connected to one of the electrode plates 16a and 16b. The bushing 22 is attached to the opening of the case 10 from which the cord 20 is pulled out.
The airtightness of the case 10 is maintained. The terminal portion 24 connects the lead of the cord 20 to the output terminal of the therapeutic device main body.
Here, it has two terminals for supplying a drive current and a third terminal for determining whether the conductor is a coil type or a capacitor type.

The adjustment of the apparatus having the above-mentioned configuration will be described below. FIG. 2 is an explanatory diagram of a spiral wiring pattern formed on the printed coil board 14. A spiral wiring pattern 14a is provided on the surface of the printed coil substrate 14 facing the human body part. Spiral wiring pattern 14a
Are provided with through holes 14b and 14c at both ends thereof, and a cord 20 is provided inside the case 10 of the through holes 14b and 14c.
And the electrode plates 16a and 16b.

FIG. 3 is a perspective view illustrating the structure of the electrode plates 16a and 16b. The circuit board 16 has a width w of about 20 mm, a height h of about 15 mm, and an interval d of about 5 mm. The electrode plates 16a and 16b are metal foils attached to the circuit board 16, and only air exists between the electrode plates 16a and 16b, and no special dielectric is inserted. Therefore, the heat is low and the heat is low. Further, since air exists between the electrode plates, even if heat is generated by the printed coil board 14, the electrode plates 16a, 16b
Acts as a heat sink, and heat is radiated inside the case 10.

In the device configured as described above, when the terminal portion 24 is connected to the output terminal of the treatment device main body, a drive current is supplied to the conductor. In the printed coil board 14, an eddy current corresponding to the drive current is generated in the affected part. The capacitance formed by the electrode plates 16a and 16b is determined so as to match the inductance of the spiral wiring pattern 14a of the printed coil board 14 and the capacitance of the lead wire of the cord 20, and has impedance matching with the main body of the treatment device. .

In the above embodiment, the case where the position of the electrode plate is fixed to the printed coil board is shown. However, the present invention is not limited to this.
A knob for adjusting the relative positional relationship between a and 16b may be exposed on the case 10 so that the knob can optimally adjust the capacity of the electrode plate.

[0019]

As described above, according to the present invention,
Since the first and second electrode plates are provided on the side opposite to the human body facing surface of the printed coil board, the size of the conductor can be reduced. In addition, since the first and second electrode plates have a small loss and also act as a heat radiating plate, the impedance matching cannot be achieved satisfactorily. Even when the conductor generates heat, it does not become excessively hot, and as a therapeutic device. This has the effect of increasing the reliability of the device.

[Brief description of the drawings]

FIG. 1 is a configuration block diagram illustrating an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a spiral wiring pattern formed on a printed coil substrate 14;

FIG. 3 is a configuration perspective view illustrating electrode plates 16a and 16b.

FIG. 4 is an explanatory diagram of a conventional device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Case 12 Front cover 14 Printed coil board 16 Circuit board 16a, 16b Electrode board 20 Code

Continuing on the front page (72) Inventor Yuji Nishida 3-3-3 Toyomata Minami, Nerima-ku, Tokyo Inside Ito Ultrashortwave Co., Ltd. (72) Inventor Shinichiro Tsuchida 3-3-1 Toyomanami, Nerima-ku, Tokyo Ito Ultrashort-wave stock F term in the company (reference) 4C053 BB02 BB25 BB34 DD03 DD08 LL13 LL18 4C082 MA02 MC01 ME04 ME11 ME17 ME27 MG01

Claims (3)

[Claims] An ultrashort-wave therapeutic device conductor connected to an output terminal of a therapeutic device main body via a cord to heat an opposing local part of a human body by Joule heat due to an eddy current, having a spirally formed wiring pattern. A printed circuit board, a first circuit board connected to the printed coil board and having a first electrode plate, and a second circuit board facing the first electrode plate and forming a capacitance, A conductor for a microwave treatment device, wherein the printed coil board faces a local part of a human body to be heated. 2. The impedance of the human body and the characteristic impedance of a transmission line including a conductor in the driving current frequency band of the treatment device main body are matched by the inductance of the printed coil board and the capacitance between the first and second electrodes. The conductor for an ultra-high frequency therapeutic device according to claim 1, wherein 3. The conductor according to claim 1, wherein the first and second circuit boards are attached to the printed coil board so as to be relatively movable with respect to each other.