JPS58112562A - Ultrasonic treating machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an ultrashort wave treatment device that can cure neuralgia, muscle pain, etc. and promote health by irradiating ultrashort waves onto the human body and activating it by increasing the temperature of the human body. be.

Specifically, even if the capacitance of the conductor applied to the affected part of the human body changes, the system automatically performs a synchronized operation to always obtain the maximum output.

In conventional ultrashort wave treatment machines, tuning is achieved by artificially changing the capacitance using a variable capacitor or the like, and adjustment is made to obtain the maximum output power. However, the capacitance between the conductors changes drastically depending on how the child is held, the location of the affected area, etc., and the variable capacitor must be constantly adjusted, which is a noticeable inconvenience. Furthermore, if the variable capacitor is tuned too much, reflection from the conductor and reduction in impedance will put stress on various parts such as transistors, leading to breakdown.

The present invention was made in view of these points, and automatically tunes according to changes in capacitance due to differences in dielectric constant due to the way the conductor is held, the location of the affected area, and the thickness of the human body. and make it easy to operate and usable by anyone. Furthermore, it is possible to prevent parts such as transistors from being destroyed due to out-of-tuning.

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

An oscillation circuit 1 generates an ultrahigh frequency output, a drive circuit 2 amplifies the power, and applies this to the gate of a transistor 3. This transistor 3 performs sufficient power amplification, and the electrostatic capacitance of the coil 4, output coil 5, trimmer capacitor 11, and variable canopy 9 performs a tuning operation of the ultrahigh frequency frequency. Then, at the output coil 5, the tap ratio n:
An ultrahigh-frequency wave output proportional to 1 is supplied to the conductor that obtains the medical effect, and the ultrahigh-frequency waves are irradiated to the affected part of the human body.

(ε: dielectric constant, ε0: relative dielectric constant, S: area of conductor.

d; distance between conductors) has an influence on the capacitance of the output coil 5 (tap ratio n) of this tuned circuit.

In order to remove this, the ultrahigh-frequency current is rectified and smoothed by a diode 13 and a capacitor 12 through a current detection coil 6, and is converted into a DC voltage. This voltage is converted into a logic signal by the AD converter 14, and is transferred to and stored in the memory M115. timer 19
The logic signal is sent from the memory M116 to the memory M at regular intervals.
218 and simultaneously transfer the logic signal of the AD converter 14 to the memory M115. and,
The comparator 17 compares the magnitude of the logic signals of the memo IJ M115 and the memory M218 and selects the larger value, and the DA converter 16 outputs a DC voltage so as to increase the ultra high frequency current, and the voltage is output via the resistor 8. Apply to Paris Camp 9. In addition, the capacitor 10 prevents direct current,
The optimum tuning point is determined by balancing the capacitance of each of the trimmer capacitor 11 and the capacitor 1o1 variable cap 9. Tuning can be performed automatically through the above process, and the influence of the capacitance of the conductor 7 can be removed.

As described above, the ultrashort wave treatment device of the present invention automatically performs tuning according to changes in capacitance caused by the way the conductor is held, the location and thickness of the affected area, and differences in dielectric constant depending on the human body. ,
It can be made usable by anyone. Furthermore, due to mistuning, the impedance becomes low and a large current flows, and due to mismatch with the conductor, the reflection of ultra-high frequency waves may generate a composite abnormal voltage, which may exceed the ASO and withstand voltage of the output transistor and lead to destruction. It can be removed and improves reliability. By achieving sufficient tuning, distortion is reduced and spurious noise is eliminated.

[Brief explanation of the drawing]

The figure is an electrical circuit diagram of an ultrashort wave treatment device according to an embodiment of the present invention. 7... Conductor, 9... Varicap, 1
2.13... Capacitor diode for rectification detection, 14... AD converter, 15.18...
...Memory I, ■, 16...DA converter, 1
7... Comparator, 19... Timer.

Claims (1)

[Claims] Rectifying and detecting the ultrahigh-frequency current that depends on the capacitance of the conductor,
After AD conversion, this logic output is stored at fixed time intervals, and the logic outputs are compared before and after this time, and the DA is shifted toward the larger value.
This ultrashort wave treatment device is configured to convert the DC voltage, apply it to the varicap, feed it back to the -order tuning circuit, and obtain the maximum output by adjusting the tuning capacitance.