JPH11235387A - Dc type potential therapy apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dc type potential therapy apparatus which is small and lightweight enough to allow easy handling and can reduce the pain of a patient caused by therapy. SOLUTION: A dc type potential therapy apparatus includes a dc power supply 1, an inverter step-up circuit 2 causing self-excitation of a dc voltage supplied from the dc power supply 1, and generating a high-voltage alternating current at high frequencies, a rectifying smoothing circuit 3 connected to the output side of the inverter circuit 2 and converting the generated high-voltage alternating current into a direct current, and either an electric floor mat 6 connected to the output side of the rectifying smoothing circuit 3 via a current limiting resistance 4 and comprising an electrode net 6a and an insulating cloth 6b or a therapeutic electric probe 5. The apparatus may also have a timer 7 built in.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a DC electric potential therapy device for treating headache, shoulder stiffness and the like mainly by static electricity.

[0002]

2. Description of the Related Art An electric potential therapy device is a device for applying a potential between a living body and the earth surface (zero potential) to treat headache, stiff shoulders, chronic constipation, insomnia, etc. by the action of electricity. There are AC type and DC type. Among them, as a DC type, for example, there is one shown in FIG.
Health Equipment Handbook ”, revised November 1995 (18
Edition), published by Japan Home Health Equipment Manufacturers Association,
p. 38).

[0003] In the prior art shown in FIG.
0 is an AC 100 V AC plug, 31 is a voltage conversion circuit, 3
2 is a rectifier circuit, 33 is a smoothing circuit, 34 is a safety circuit, 35
Is a safety resistance, and 36 is a floor mat composed of an electrode network 36a and an insulating cloth 36b.

[0004] In this conventional DC potential treatment device,
A voltage of 100 V AC from the power line is converted into a predetermined high voltage (generally several hundred [V]) by a voltage conversion circuit (mainly a transformer) 31, rectified by a rectification circuit 32, and pulsated by a smoothing circuit 33. No DC voltage is supplied to the output terminal through a safety circuit (current limiting circuit) 34. The output terminal is connected to the living body which is insulated from the ground via the electric floor mat 36 or an electric needle (not shown), whereby the electric potential treatment of the living body is performed. The other end of the output terminal is connected to the ground. In order to avoid the trouble of connecting the other end of the output terminal to the ground, as shown by the dotted line, the other end of the output terminal is connected to an electric light line via a high-resistance safety resistor 35, so that an electric lamp is provided. Some devices are designed to connect to the ground through wires.

[0005]

In this conventional DC potential treatment device, the voltage conversion circuit (transformer) 31 for generating a high voltage uses the commercial frequency as it is, so that the voltage conversion circuit 31 becomes large and Weight is also large. Therefore, there is a problem that the electric potential therapy device using the voltage conversion circuit 31 is large and heavy, and is difficult to handle during transportation or use.

In addition, when an electric needle is directly applied to the skin to perform potential treatment, the interval of supplying static electricity is 60 or 50 times per second depending on the commercial frequency (60 Hz or 50 Hz). The big problem is that you feel pain in the treatment.

Therefore, an object of the present invention is to reduce the size and weight of the voltage conversion circuit to reduce the size and weight of the entire electric potential therapy device, to facilitate the handling thereof, and to reduce the pain that a patient suffers during treatment. It is an object of the present invention to provide a device capable of reducing the above.

[0008]

According to a first aspect of the present invention, there is provided a DC electric potential therapy apparatus comprising:
A DC power supply (1), an inverter circuit (2) that self-oscillates a DC voltage supplied from the DC power supply (1) to generate a high-frequency high-voltage AC, and one end on the output side of the inverter circuit (2). A rectifying / smoothing circuit (3) for converting the generated high-voltage alternating current into a direct current, and an electrode network connected to an output side of the rectifying / smoothing circuit (3) via a current limiting resistor (4). An electric floor mat (6) composed of (6a) and an insulating cloth (6b) or a therapeutic electric needle (5) is provided.

The invention described in claim 2 is the first invention.
Wherein the inverter circuit (2) comprises: an output pulse transformer (21); two transistors (22, 23) connected to the primary side of the output pulse transformer (21); Two transistors (2
2, 23) and a primary side of an output pulse transformer (21).
The supplied DC voltage is converted to a capacitor (24) and a primary side of an output pulse transformer (21) and two transistors (2
Self-oscillation occurs due to the difference from the conduction time of (2, 23),
It is characterized by generating high voltage alternating current at high frequency.

[0010] Further, the invention according to claim 3 is based on claim 1.
Alternatively, in the direct-current potential treatment device according to 2, the treatment electric needle (5) can be used also as a connection jack to the electrode network (6a) of the electric floor mat (6).

The invention described in claim 4 is the first invention.
3. The DC potential therapy device according to any one of the items (1) to (3), further comprising a built-in timer (7) for supplying a DC voltage from the DC power supply (1) to the inverter circuit (2) in response to the time set by the selection switch. Features.

Symbols in parentheses indicate corresponding elements or matters described in the drawings and the embodiments of the invention described later.

According to the DC type electric potential therapy apparatus of the present invention, an inverter circuit for converting a DC voltage into a high-frequency high-voltage AC is used. Since there is no need to connect a (transformer), the entire device can be made small and lightweight. In addition, since the high frequency obtained by the inverter circuit is used in the electric potential treatment, the interval between the supply of static electricity is shorter than that of the conventional one, and therefore, the patient suffers less pain.

Further, according to the second aspect of the present invention, since the inverter circuit is a so-called inverter booster circuit, the DC electric potential treatment device can be reduced in size and weight, similarly to the first aspect of the invention. In addition, the damage to the patient can be reduced.

Further, according to the third aspect of the present invention, the treatment electric needle of the DC electric potential treatment device according to the first or second aspect can be used as a connection jack to the electrode net of the electric floor mat. Therefore, the number of parts is reduced.

According to the fourth aspect of the present invention, since the timer is built in the direct current potential treatment device according to any one of the first to third aspects, the potential treatment device is set in advance by the timer so as to operate for a predetermined time. By doing so, individual patients with different symptoms can receive appropriate time potential therapy.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A DC potential therapy device according to an embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is an external perspective view showing a DC potential treatment device, and FIG.
FIG. 3 is a block diagram showing an outline of the electric configuration, and FIG. 3 is an electric circuit diagram of the inverter booster circuit 2 used therein.

The DC potential therapy device according to the embodiment of the present invention mainly includes a DC power supply 1, an inverter booster circuit 2 connected to the DC power supply 1 via a timer 7, and an output side of the inverter booster circuit 2. Rectifying and smoothing circuit 3 connected to one end of the
And a treatment electric needle 5 that is also used as a connector (connection jack) connected to the output side of the rectifying and smoothing circuit 3 via the current limiting resistor 4, and is attached by inserting the treatment electric needle 5 into the insertion port 6 d. An electric floor mat 6 including an electrode net 6a and an insulating cloth 6b is provided.

The DC power source is a 12V power source and eight 1.5V batteries (AA) connected in series.

The inverter booster circuit 2 is an inverter circuit that self-oscillates a DC voltage supplied from the DC power supply 1 and generates a high-frequency, high-voltage AC, and has a circuit as shown in FIG. That is, the inverter booster circuit 2 according to the present embodiment includes an output pulse transformer 21, two transistors 22 and 23 connected to the primary side of the output pulse transformer 21, and two transistors 22 and 2.
3 and a capacitor 24 interposed in parallel between the primary side of the output pulse transformer 21 and the supplied DC voltage by the capacitor 24 and the primary side of the output pulse transformer 21 and the two transistors 22. The self-oscillation occurs due to the difference from the conduction time of 23, and a high-frequency, high-voltage alternating current is generated. When a DC voltage of 12 V is supplied to the input side, the output side is about 1200 V at a frequency of about 40 kHz.
Is generated (current 5 mA).

The rectifying / smoothing circuit 3 is a circuit for rectifying an alternating current and converting it into a direct current without a pulsating current. The current limiting resistor 4 is provided as a safety circuit for protecting the patient. The electric floor mat 6 has a size of 400 × 900 mm and an electrode net 6a.
Is a mesh of a copper core wire, under which an insulating cloth 6b made of chloroprene foam is used. The periphery of the electrode net 6a and the insulating cloth 6b is covered by a cover 6.
c.

The timer 7 is adapted to supply a DC voltage from the DC power supply 1 to the inverter booster circuit 2 corresponding to a time set by a selection switch of one hour (1 h) or three hours (3 h). . The power switch 8 and the start switch 9 are connected to the timer 7. Note that reference numeral 10 is replaced by an outer plastic case constituting the DC potential treatment device with a safety resistor.

In the DC potential therapy device according to the present embodiment, when the power switch 8 is first turned on, power is supplied to the timer 7. Next, when the start switch 9 is turned on, an operation signal is sent from the timer 7 to the inverter booster circuit 2.
Starts generating high frequency high voltage. Here, one end of the secondary side terminal of the output pulse transformer 21 of the inverter booster circuit 2 is connected to a rectifying / smoothing circuit 3, and the rectifying / smoothing circuit 3 converts a high-frequency high-voltage signal into DC. The other end of the output pulse transformer 21 is connected to a circuit ground.

The high-voltage signal converted into a direct current by the above operation is applied to the patient via a current limiting resistor 4 provided for protecting the patient, via an electric needle 5 or an electric floor mat 6, and electric potential treatment is performed. Will be applied. In this case, the electric treatment can be performed by directly applying the electric needle 5 to the patient, and the electric needle 5 is directly connected to the electrode network 6a laid on the insulating cloth 6b to conduct static electricity. The potential treatment can also be performed by laying or sitting the patient on the floor mat 6. The electrode network 6a of the electric floor mat 6 may be connected to the output side of the current limiting resistor 4 directly or by using another connector without using the electric needle 5.

When a predetermined time set by the built-in timer 7 elapses and the operation signal from the timer 7 stops, the inverter booster circuit 2 stops generating the high-frequency high voltage. The potential treatment that has been performed ends.

In this embodiment, the DC potential treatment device having a built-in timer 7 has been described. However, even a potential treatment device having no built-in timer 7 uses the inverter circuit 2 so that it is naturally reduced in size and weight. Can be achieved.

In this embodiment, the inverter booster circuit 2 as shown in FIG. 3 has been described as an example. However, the DC voltage from the DC power supply 1 self-oscillates to generate a high-frequency high-voltage AC. Other circuits may be used as long as they are inverter circuits.

[0028]

As described above, according to the DC electric potential treatment device of the first aspect of the present invention, since the inverter circuit is used, the whole device can be reduced in size and weight. It is easy to handle when carrying or using. Further, since the high frequency obtained by the inverter circuit is used in the electric potential treatment, the interval between the supply of static electricity is shorter than that of the conventional one, so that the patient suffers less pain and easy treatment is possible.

According to the second aspect of the present invention, the inverter circuit is a so-called inverter booster circuit. Therefore, similarly to the first aspect of the present invention, the DC electric potential treatment device is reduced in size and weight and handled. And the damage to the patient can be reduced.

Further, according to the third aspect of the present invention, the treatment electric needle of the DC potential treatment device according to the first or second aspect can be used as a connection jack to the electrode net of the electric floor mat. Therefore, the number of parts is reduced.

According to the fourth aspect of the present invention, since the timer is built in the direct current potential treatment device according to any one of the first to third aspects, individual patients with different symptoms can perform the potential treatment for an appropriate time. Can receive.

[Brief description of the drawings]

FIG. 1 is an external perspective view showing a DC potential treatment device according to an embodiment of the present invention.

FIG. 2 is a block diagram showing an outline of an electrical configuration of the DC potential treatment device shown in FIG.

FIG. 3 is an electric circuit diagram of the inverter booster circuit shown in FIG. 2;

FIG. 4 is a block diagram showing an outline of an electric configuration of a DC potential treatment device according to a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 DC power supply 2 Inverter booster circuit 3 Rectifier smoothing circuit 4 Current limiting resistor 5 Electric needle 6 Electric floor mat 6a Electrode network 6b Insulation cloth 6c Cover 6d Insertion port 7 Timer 8 Power switch 9 Start switch 10 Safety resistor 21 Output pulse transformer 22 Transistor 23 Transistor 24 Capacitor 30 AC plug 31 Voltage conversion circuit 32 Rectifier circuit 33 Smoothing circuit 34 Safety circuit 35 Safety resistor 36 Electric floor mat 36a Electrode network 36b Insulation cloth

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Itsuo Okumura 3-8-24 Sendamachi, Naka-ku, Hiroshima-shi, Hiroshima In the Hiroshima City Industrial Promotion Center

Claims (4)

[Claims] 1. A DC power supply, an inverter circuit that self-oscillates a DC voltage supplied from the DC power supply to generate a high-frequency high-voltage AC, and is connected to one end of an output side of the inverter circuit to generate the DC voltage. A rectifying / smoothing circuit for converting the high-voltage alternating current into a direct current, and an electric floor mat or a medical treatment device comprising an electrode net and an insulating cloth connected to the output side of the rectifying / smoothing circuit via a current limiting resistor. A DC potential treatment device comprising an electric needle. 2. An inverter circuit comprising: an output pulse transformer; two transistors connected to a primary side of the output pulse transformer; and a transistor connected between the two transistors and a primary side of the output pulse transformer. A capacitor interposed in parallel, and self-oscillates the supplied DC voltage by the difference between the capacitor and the conduction time of the primary side of the output pulse transformer and the two transistors. The direct current potential treatment device according to claim 1, wherein an alternating current is generated. 3. The DC electric potential treatment device according to claim 1, wherein the electric needle for treatment can be used also as a connection jack to an electrode network of the electric floor mat. 4. A DC potential according to claim 1, further comprising a timer for supplying a DC voltage from a DC power supply to said inverter circuit in accordance with a time set by said selection switch. Therapeutic device.