JPH0523400A - Microwave treatment device - Google Patents

Abstract

PURPOSE:To heat even the affected part present in a deep part by changing the output level of a microwave in connection with the output number of times of a microwave. CONSTITUTION:A control signal Sc for controlling output is supplied to a microwave oscillation part 7 from an output control part 10. The output control part 10 changes not only the peak value of a microwave but also the number of pulses thereof corresponding to the set value of an output adjusting knob 8 so that the peak value is made high at each time when the number of pulses is reduced and average output during a definite period becomes equal. By this constitution, a microwave of large energy can be generated within a short time and a living body can be heated up to the deep part thereof.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microwave therapeutic device for irradiating a human body with microwaves for heating and treatment.

[0002]

2. Description of the Related Art As a conventional microwave therapeutic device, a device that continuously outputs microwaves and a device that outputs microwaves in pulses are known. Of these treatment devices, those that continuously output microwaves perform output adjustment by changing the peak value, and those that output in pulse form adjust output by changing the pulse width. It is carried out.

[0003]

By the way, in the above-mentioned various conventional microwave therapeutic devices, the output is adjusted by changing the peak value in the case of continuous microwaves and by changing the pulse width in the case of making a pulse. I am trying. However, since the amount of output energy when viewed in a short time is not so large, only the entire surrounding area including the affected area is heated shallowly and it is difficult to heat the affected area in the deep layer. It was

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a microwave therapeutic device capable of heating a diseased part in a deep layer.

[0005]

A microwave therapeutic device according to a first aspect of the present invention is provided with a first control means for controlling the number of times the microwave is output within a predetermined period, and in conjunction with the first control means. And a second control means for controlling the output level of the microwave. The microwave therapeutic device according to claim 2 is characterized in that the control of the output level of the second control means is decreased as the number of times of microwave output by the first control means is increased. The microwave therapeutic device according to a third aspect is characterized in that the microwave output timing of the first control means according to the first or second aspect is synchronized with the power supply frequency.

[0006]

According to the above construction, since the output level of the microwave changes in association with the number of times the microwave is output, it is possible to reduce the number of times the microwave is output and increase the output level, especially within a predetermined period. With this, a large amount of energy can be output in a short time. Therefore, by releasing a large amount of energy in a short time,
It becomes possible to heat the deep part of the living body.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of a microwave therapeutic device according to an embodiment of the present invention. In this figure, 1 is a power switch and 2 is a power supply. Power supply 2
Supplies low-voltage power to a timer control unit 3, an over-output detection unit 4, a zero start circuit unit 5 and a display unit 6, which will be described later.

The timer control section 3 outputs the signal Sd for a predetermined period from the time when the start signal Ss supplied from the zero start circuit section 5 is input. In this case, the period during which the signal Sd is output can be adjusted arbitrarily. Further, the timer control unit 3 immediately stops the output of the signal Sd when the over output signal So is supplied from the over output detection unit 4.

The over-output detector 4 detects the output of the microwave oscillator 7 and outputs the above-mentioned over-output signal So if the detected value is larger than a preset value. The zero start circuit section 5 supplies the start signal Ss to the timer control section 3 as described above, and the start signal Ss is supplied to the power switch 1 when the output adjusting knob 8 (not shown) is set to zero. Output when is input. The display unit 6 displays the timer set value.

Reference numeral 9 is a solid state relay having a zero cross function. This solid state relay 9
As is well known, a bidirectional diode (trade name: TRIAC) is used so that alternating current can be turned on and off. The zero-cross function is a function that turns on the triac near zero of the AC voltage.
As a result, noise can be reduced when the resistance load is applied.

In the solid-state relay 9, after the signal Sd is supplied from the timer control section 3, the triac is turned on when the supplied AC voltage becomes close to zero, and the AC voltage is supplied to the microwave oscillating section 7. Supply to.
At the same time, this AC voltage is also supplied to the output control unit 10 and the cooling fan 11. The microwave generated from the microwave oscillator 7 is output to the hollow through the antenna 12.

The output control section (first control means and second control means) 10 supplies a control signal Sc for controlling the output to the microwave oscillating section 7, and the output adjusting knob. The crest value of the microwave is changed according to the set value of 8, and the number of pulses is also changed. In this case, the crest value increases as the number of pulses decreases, and the average output during a certain period becomes the same. The output is performed in synchronization with the power supply frequency. That is, for example, in the case of a commercial power supply of 50 Hz, the number of pulses output per second is 50, so by adjusting the output adjustment knob 8, the number of pulses changes between 1 and 50 per second. To do. An adjustment knob (not shown) that can change the height of the peak value regardless of the position of the output adjustment knob 8 is also provided separately. This adjustment knob becomes effective when the output adjustment knob 8 is effective.

In the microwave therapeutic device having such a structure, the power switch 1 is turned on after setting the set value of the output adjusting knob 8 to zero. As a result, the timer control unit 3
Outputs a signal Sd, which is supplied to the solid state relay 9. Further, the control unit 3 starts timing. When the signal Sd is supplied to the solid state relay 9, the relay 9 turns on the triac near zero of the AC voltage, and supplies the AC power supply to the microwave oscillator 7, the output controller 10 and the cooling fan 11. Thereby, the microwave based on the control signal Sc supplied from the output control unit 10 is output from the microwave oscillating unit 7,
It is supplied to the antenna 12. Then, when the timer control unit 3 measures the time up to the preset set value, the output of the signal Sd is stopped. This stops the output of microwaves.

Here, if the set value of the output adjusting knob 8 is increased, the number of microwaves output per second increases and the crest value decreases accordingly.
Conversely, when the set value of the output adjustment knob 8 is decreased, the number of microwaves output per second decreases, and the crest value increases accordingly. Therefore, if the set value of the output adjusting knob 8 is set to a small value, a large amount of energy can be applied to the living body in a short time, so that the deep portion of the living body can be heated.

On the other hand, if the output value exceeds the specified value for some reason while the microwave is being output, this state is detected by the overoutput detection unit 4 and the overoutput signal So is controlled by the timer. It is supplied to the part 3. This stops the output of microwaves.

In this embodiment, since the microwave is output in synchronization with the power supply frequency, it is not necessary to provide a separate oscillator. The cost can be reduced accordingly.

[0017]

As described above, according to the microwave therapeutic device of the present invention, since microwaves having large energy can be generated in a short time, it is possible to heat a deep part of a living body. Is obtained.

[0018]

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of a microwave therapeutic device according to an embodiment of the present invention.

[Explanation of symbols]

3 Timer control unit 4 Over output detector 5 Zero start circuit section 7 Microwave oscillator 8 Output adjustment knob 9 Solid state relay 10 Output control unit 12 antennas

Claims (3)

[Claims] 1. A first control means for controlling the number of times of microwave output within a predetermined period, and a second control means for controlling the microwave output level in cooperation with the first control means. A microwave therapeutic device characterized by: 2. The microwave therapy according to claim 1, wherein the control of the output level of the second control means is decreased as the number of times of microwave output by the first control means is increased. vessel. 3. The microwave therapeutic device according to claim 1, wherein an output timing of the microwave of the first control means is synchronized with a power source frequency.