JP3255867B2 - Potential therapy device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a potential therapy device for generating a high-voltage waveform and applying it to an insulated human body for treatment. In particular, the voltage waveform can be selected according to the condition of a patient or an affected part. In addition, the present invention relates to a potential therapy device which is easy to remotely operate and which takes safety into consideration.

2. Description of the Related Art A conventional electric potential therapy device has a configuration as shown in a circuit block diagram of FIG.
00V, 50/60 Hz) 1 is voltage-adjusted by a slider 2, a high-voltage output is obtained by a step-up transformer 3, and a waveform shaping circuit 4
(OUT terminal)
1 and R2 are safety resistors, and one terminal (not shown) of the output is connected to the ground through a commercial power supply line). The waveform shaping circuit 4 shapes the waveform so that the average voltage of the high voltage output becomes negative by, for example, attenuating the amplitude of the positive half cycle of the output voltage in order to increase the therapeutic effect. As described above, the conventional electric potential therapy apparatus has a simple circuit configuration that simply boosts the commercial AC power supply as it is, and the adjustment of the output voltage is also performed by the patient or the therapy administer turning the dial of the slide rack 2. . In this regard, although the conventional electric potential therapy apparatus has an advantage of a simple configuration, the following problems (1) to (3) are pointed out. (1) The output waveform of the step-up transformer 3 has the same frequency as the commercial AC 100 V (the output is 60
If the frequency is 50 Hz, the output is also 50 Hz. ), The voltage waveform cannot be applied finely according to the condition of the affected part of the patient. (2) The output voltage can be easily adjusted by directly turning the dial of the SLIDAC. However, it is difficult for the patient who is sitting or sleeping to turn the dial directly, and is performed by the practitioner. In this case, it is troublesome to come to the device and turn the dial. However, it is conceivable that this can be remotely controlled (remote control). However, in order to make the remote control with the conventional circuit configuration as it is, it is necessary to drive the Slidac 2 by a motor. However, this control is difficult and very expensive. (3) Since the potential therapy device applies a high voltage to the human body, special consideration is required for its safety. In this regard, sudden application or stoppage of a high voltage to the affected area may cause a large shock to the patient, and it may be desirable to perform automatic control to gradually reduce the final output when the output is stopped. However, it is difficult to achieve this control by adjusting the slider, and fine adjustment is also difficult and not reliable.

SUMMARY OF THE INVENTION However, in view of the above problems, the present invention adapts the high voltage output of the electric potential therapy device not only to voltage adjustment but also to various frequencies and waveforms so that it can be adapted to patients and affected parts. It is an object of the present invention to enable effective electric potential treatment, facilitate remote control (remote control), and provide comfort by automatically reducing the output voltage when output is stopped.

According to the present invention, there are provided: (1) a power supply circuit to which a commercial AC power supply is input, a waveform memory circuit in which at least two or more types of voltage waveforms are time-divided and stored as digital data, A conversion circuit for cyclically reading voltage waveform data from the waveform memory circuit and converting and generating the analog voltage waveform; a power amplification circuit for amplifying the generated analog voltage waveform; and inputting the output of the power amplification circuit to the primary side And a waveform shaping circuit for shaping the boosted high-voltage waveform and outputting a high-voltage waveform to the secondary side. A control voltage generated through a remote control light receiving unit that receives a signal from a remote control transmitter, a remote control decoding unit, a reversible counter, and a DA converter is input to a second unit. Comprising a multiplier which receives, to solve the above problems by providing an electric potential therapy apparatus, characterized by remotely controlling the output voltage of the output of the multiplier as an input of the power amplifier circuit. (2) Further, in the potential therapy device according to the above (1),
The above object is attained by providing a potential therapeutic device which is provided with a gradually decreasing control circuit for automatically performing a control for gradually decreasing the final output of the multiplier when the output is stopped.
Here, the above-mentioned electric potential treatment device performs a physical therapy by applying a high voltage (about 1 KV to 15 KV) of an alternating current (including a half-wave rectified pulsating current) to the whole body of an insulated human body. It is effective for stiff shoulders, insomnia, chronic constipation and the like. Also,
By applying a high voltage to a local part of the human body using an electronic pen having a pen-shaped electrode, the therapeutic device can be expected to have the same therapeutic effect as a tension treatment.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a potential therapy device according to the present invention will be described with reference to the drawings. The same parts as those in the related art are designated by the same reference numerals. FIG. 1 is a circuit block diagram showing one embodiment of a potential therapy device according to the present invention. Also,
FIG. 2 is a perspective view for explaining the appearance of the electric potential treatment device according to the present invention and the state of treatment. In FIG. 1, a potential therapy device 50 includes a power supply circuit (not shown; comprising a general power supply transformer and a rectifying / smoothing circuit) that receives a commercial AC power supply (not shown), and at least two or more types of voltage waveforms (actually). Top is 4 ~
A waveform memory circuit 11 which stores time-divided digital data of eight suitable types, digital data of a voltage waveform cyclically selected and read from the waveform memory circuit 11, and a read circuit 13 A DA converter 14 for converting digital data into analog data, and an LPF (low-pass filter) 15 for interpolation (the above-described readout circuit 13, DA converter 14, and LPF 15 are referred to as a conversion circuit A).
And a power amplifying circuit 17 for amplifying the generated analog voltage waveform, a boosting transformer 3 for inputting an output of the power amplifying circuit 17 to a primary side and outputting a high-voltage waveform to a secondary side, and A waveform shaping circuit 4 for shaping a high-voltage waveform, a remote control light-receiving unit 21 which receives the signal from the remote control transmitter while receiving the analog voltage waveform generated by the conversion circuit A as a first input (in1). , Remote control decoding unit 2
3, a reversible counter 25, and a DA converter 27. The multiplier 16 has a control voltage generated as a second input (in2). The output of the multiplier 16 (in1 and in2)
2) is input to the power amplification circuit 17. With the above block circuit configuration, various arbitrarily selected voltage waveforms such as a rectangular wave, a triangular wave, a sine wave, a circular wave, and the like become high voltages and are output to the OUT terminal, and the output voltage is increased or decreased by in2. As a result, it becomes possible to perform remote control with a remote control transmitter. Here, as the waveform memory circuit 11, a ROM (E
PROM, flash ROM and EEPROM)
A magnetic disk or an optical disk is used, and the voltage waveform data is stored as a sample sequence of the sampled discrete signal. Note that the output voltage can be easily adjusted by controlling the output of the power amplifier circuit 17. The selection of the voltage waveform data is performed by controlling the readout circuit 13 by a microcomputer for controlling the entire circuit. The remote control transmitter uses an infrared light emitting diode or an ultrasonic transmission system widely used in electric appliances such as televisions and audios. The basic principle of remote control is the same as before.
That is, code data corresponding to each operation such as waveform selection, output voltage setting, output increase, output decrease, on / off, etc. is stored in the memory of the remote control transmission microcomputer, and the code corresponding to the button pressed on the remote control is stored. The data is transferred to the register, and a remote control code is created in order, and this is represented by 40 k, which represents "1" and "0" in terms of the pulse time interval.
The signal is modulated by a carrier wave of 1 Hz to produce a remote control signal, amplified, and transmitted from an infrared light emitting diode. On the other hand, the potential therapy device 5
On the 0 side, an infrared signal is converted back to an electric signal by a pin photodiode, amplified and detected, and a remote control code is taken out. Then, this information is input to the reversible counter 25, converted into an analog signal by the DA converter 27, and input to the multiplier 16 as a second input (in2). After all, the output voltage is equal to the second input (i
The increase / decrease is controlled by the remote control transmitter giving n2). Further, the electric potential therapy device 50 shown in FIG. 1 additionally performs a control for gradually decreasing the final output when the output of the multiplier 16 is stopped at the time of output start after the DA converter 27 having the above block configuration. Control circuit 40 for controlling the output of the multiplier 16 and, consequently, the potential therapy device 5
The third feature is to control the output voltage of 0. That is, when the output is switched off, the control microcomputer sends a signal waveform for gradually decreasing the second input (in2 ') of the multiplier 16 for a few seconds. On the other hand, the voltage increase / decrease control by the remote control transmitter is ignored during the final output period, and the output is controlled by the control microcomputer so as to be performed at other stable output times. However, the high voltage is not directly applied to the affected part at the moment of switch-on, but is applied gradually, so that there is no shock. When the high voltage is off, the applied voltage gradually decreases, so that the patient is safe and does not feel uncomfortable. As described above, most of the circuits of the electric potential therapy apparatus 50 are controlled by the control microcomputer, but the circuits are realized by using conventional techniques.
The actual treatment by the electric potential treatment device 50 having the above-described circuit configuration is used, for example, in a state as shown in FIG. In FIG. 2, a practitioner M applies an electronic pen having a pen-shaped electrode connected to an output terminal of the potential therapy device 50 to an affected part of a patient K sitting on a treatment chair to locally apply a high voltage. . The practitioner M uses the remote control transmitter R to move away from the potential therapy device 50.
Remote control to increase or decrease applied voltage, turn output on / off,
It changes the set voltage and the voltage waveform. As a reminder, there is no particular limitation on the form of high voltage application.Generally, when applying to the whole body of a human body, for example, a sheet-like electrode incorporated in a chair or the like is used,
In the case of applying the voltage locally, an application form like the above-mentioned electronic pen can be considered. One terminal of the output is connected to the ground through a commercial power supply line, and the high voltage is applied with reference to the ground. As described in detail above, the potential therapy device according to the present invention generates an arbitrary voltage waveform set in advance and increases / decreases the voltage waveform instead of simply using the voltage waveform of the commercial AC power supply as the input of the step-up transformer. (A)
By realizing the remote control operation and (b) gradually reducing the output voltage, it is possible to reduce the shock and improve the safety. In the future, as the relationship between the affected area and the applied voltage waveform / frequency in potential therapy is studied, the usefulness of this potential therapy device will definitely increase.

The potential therapeutic device according to the present invention is configured as described above, and has the following excellent effects. (1) Remote operation by a remote control transmitter can be easily realized, and operability is improved. (2) By gradually decreasing the output voltage at the end of the output voltage, the shock to the patient is reduced, and the safety is improved.

[Brief description of the drawings]

FIG. 1 is a circuit block diagram showing one embodiment of a potential therapy device according to the present invention.

FIG. 2 is a perspective view for explaining the appearance of a potential therapy device according to the present invention and the state of treatment.

FIG. 3 is a block diagram of a conventional potential therapy device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Commercial AC power supply 2 Sliding back 3 Boost transformer 4 Waveform shaping circuit 11 Waveform memory circuit 13 Reading circuit 14 DA converter 15 LPF 16 Multiplier A conversion circuit 17 Power amplification circuit in1 First input of multiplier in2, in2 ′ Second input of multiplier 21 Remote control light receiving unit 23 Remote control decoding unit 25 Reversible counter 27 DA converter 40 Gradual decrease control circuit 50 Potential therapy device

Claims (2)

(57) [Claims] A power supply circuit having a commercial AC power supply as an input;
A waveform memory circuit in which at least two or more types of voltage waveforms are time-divided and stored as digital data, a conversion circuit for cyclically reading out the voltage waveform data from the waveform memory circuit and converting and generating the analog voltage waveform; Amplifying circuit for amplifying the analog voltage waveform, a boosting transformer for inputting the output of the power amplifying circuit to the primary side and outputting a high-voltage waveform to the secondary side, and a waveform for shaping the boosted high-voltage waveform A shaping circuit, comprising: a remote control light receiving unit that receives a signal from a remote control transmitter while receiving the generated analog voltage waveform as a first input; a remote control decoding unit; a reversible counter; A DA converter; and a multiplier having a control voltage generated through the DA converter as a second input, wherein the output of the multiplier is used as an input of a power amplifier circuit to remotely control an output voltage. Potential therapy apparatus characterized by. 2. The potential therapy device according to claim 1, further comprising a gradually decreasing control circuit for automatically performing a control for gradually decreasing the final output of the multiplier when the output is stopped. .