JPH05309140A - Low frequency therapeutic device - Google Patents

Abstract

PURPOSE:To prevent the generation of interference between channels in a low frequency therapeutic device equipped with a plurality of output electrode parts by providing a delay circuit for giving mutual time difference to timing signals sent to each output circuit which outputs a therapy output current to each output electrode part. CONSTITUTION:In a low frequency therapeutic device which is provided, for each output electrode part 5, 6, with first and second channel circuits 3, 4 as an output circuit generating a therapy output current by receiving timing signals from a timing generating circuit 1, a delay circuit 7 is provided to delay the timing signals generated from the timing generating circuit 1. The timing signals delayed by the delay circuit 7 are inputted to the second channel circuit 4. Thereby, even if electrodes B1, B2 of the output electrode part 6 are electrified between them in the second channel circuit 4, a current does not flow from the electrode B1 into an electrode A2 of the output electrode part 5 to stimulate only one part at all times.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a low frequency treatment device having two or more (plural) output electrode portions.

[0002]

2. Description of the Related Art Some low-frequency treatment devices are provided with two or more output electrode portions (composed of a pair of electrodes) and are capable of treating two or more affected areas at the same time. A circuit diagram of a conventional low frequency treatment device of this type is shown in FIG. This low frequency therapy device
Two channels, that is, two output electrode portions are shown. This low frequency treatment device includes a timing generation circuit 1 and
The booster circuit 2, the first channel circuit 3, and the second channel circuit 4 are provided.

The first channel circuit 3 constitutes an output circuit.
Transistor Q₁, Q₂, Q ₃And strength adjustment
VR VR₁And the output electrode section 5.
Transistor Q₁The base is resistance R₁Through timing
Connected to the output terminal of the generator circuit 1 and the emitter is connected to earth.
And the collector has a resistor R₂Through transistor Q ₂
Connected to the base of. Transistor Q₂Collect
Connected to the 100V power supply voltage output terminal of the booster circuit 2.
The emitter has a strength adjustment volume VR₁Connect to one end of
Has been done. Transistor Q₃The base is resistance R_FourTo
Connected to the output terminal of the timing circuit 1 via
Is grounded. The output electrode unit 5 is a pair of electrodes.
A₁, A₂Composed of. Electrode A₁Is the (+) electrode
Strength adjustment volume VR₁The other end of the electrode
A₂Is the (-) electrode, and the transistor Q₃Collector of
It is connected to the.

The second channel circuit 4 constitutes an output circuit.
Transistor Q_Four, Q_Five, Q ₆And strength adjustment
VR VR₂And the output electrode section 6.
The circuit connection is similar to that of the first channel circuit 3. Cure
When performing medical treatment, the electrode A of the output electrode unit 5₁, A₂Out
Electrode B of force electrode unit 6 ₁, B₂The affected part of the human body C
C₁, C₂Contact. From the timing generation circuit 1,
The pulse width is 100 usec and the pulse period is 1 second.
When the timing signal is output, the first channel circuit 3
Transistor Q₁~ Q₃And the second channel circuit 4
Transistor Q_Four~ Q₆Turn on simultaneously and boost circuit 2
With a 100V power supply from₂, Strength
Adjustable VR₁, Electrode A₁, Human body, electrode A₂,Tiger
Register Q₃Energized by the route of the Transis
Q _Five, Strength adjustment volume VR₂, Electrode B₁, B₂,
Transistor Q_FiveIs energized by the route. That is,
In the low frequency treatment device of FIG. 3, as shown in FIG.
The channels are output at the same time.

[0005]

[SUMMARY OF THE INVENTION A conventional low frequency therapy apparatus described above, the timing generating circuit, each channel circuit, since it is intended to add the same timing signals, from the electrodes A _1, as shown in FIG. 4 other energizing current a regular to the electrodes a _2, the bias current b from the electrode a ₁ to the electrode B ₂
However, even if the intensity adjusting volume VR _{2 is set} to the minimum output, there is a problem that the bias current remains and stimulates that portion, that is, interference between the electrode portions occurs.

The present invention has been made in view of the above problems, and an object thereof is to provide a low frequency therapeutic device in which interference does not occur between channels.

[0007]

A low frequency treatment device according to the present invention comprises a plurality of output electrode portions, a plurality of output circuits for supplying a treatment output current to these electrode portions, and a timing signal for each of these output circuits. And a timing generation circuit for controlling the input of the signal, which is characteristically provided with a delay circuit for giving a time difference to the timing signals input to the output circuits.

In this low frequency treatment device, since the timing signal is input from the timing generation circuit to each output circuit with a time difference, when a certain output electrode section is energized, the other output electrode section, It is rarely leaked and energized, and can be used with only one channel when needed, and the sensory stimulus is only with one channel at each time point.

[0009]

The present invention will be described in more detail with reference to the following examples. FIG. 1 is a circuit diagram of a low frequency treatment device showing an embodiment of the present invention. This low frequency treatment device includes a timing generation circuit 1, a booster circuit 2, a first channel circuit 3, and a second channel circuit 4, and further,
The circuit configuration of each channel circuit is no different from the conventional one shown in FIG.

The characteristic of the low frequency treatment device of this embodiment is that
The timing signal from the ring generator circuit 1 is
Input to the channel circuit of 1 while the timing signal
Delay circuit 7 for delaying the signal
The signal is input to the second channel circuit 4.
And. In this low frequency treatment device, the timing generation circuit
1 to 1 channel circuit 3 transistor Q₁, Q₃
When a timing signal is input to the₁,
Q ₂, Q₃Turns on and electrode A₁, A₂Is energized
It However, at this point, the second channel circuit 4
Has no timing signal applied and therefore
Star Q_Four, Q_Five, Q₆Is not on, electrode A₁From
Pole B₂No current will flow into it.

The timing signal output from the timing generation circuit 1 is delayed by the delay circuit 7 and input to the second channel circuit 4, and the transistors Q ₄ , Q ₅ , and Q ₆ are input.
At the timing of turning on, on the contrary, since the timing signal is not input to the first channel circuit 3, the transistors Q ₁ , Q ₂ , Q ₃ are not turned on, and therefore, the current is applied between the electrodes B ₁ , B _2. Is generated, the electrodes B ₁ to A
_No current flows into ₂ . The delay time of the delay circuit 7 is, as shown in FIG.
It is set to the extent of msec.

In the above embodiment, the case where there are two channels has been described, but when there are three or more channels, the timing signals applied to the respective channels may have a time difference. The delay time of the delay circuit may be set.

[0013]

According to the present invention, since a delay circuit for providing a time difference to the timing signals input to each output circuit is provided, when a certain output electrode section is energized, another output signal is output. The electrodes are not energized.Therefore, no current flows between the output electrodes, and if necessary, stimulation can be given to only one output electrode. Even when the treatment is performed simultaneously at a plurality of locations, the stimulation is always applied to only one location at the time of energizing each electrode portion.

[Brief description of drawings]

FIG. 1 is a circuit diagram of a low frequency treatment device showing an embodiment of the present invention.

FIG. 2 is a time chart showing an output waveform of each channel of the low frequency treatment device of the embodiment.

FIG. 3 is a time chart showing an output waveform of each channel of a conventional low frequency treatment device.

FIG. 4 is a circuit diagram showing a conventional low frequency treatment device.

[Explanation of symbols]

 1 Timing Generating Circuit 3 First Channel Circuit 4 Second Channel Circuit 5, 6 Output Electrode Section 7 Delay Circuit

Claims (1)

[Claims] 1. A low-frequency therapy comprising a plurality of output electrode portions, a plurality of output circuits for supplying a treatment output current to each of these electrode portions, and a timing generation circuit for inputting and controlling a timing signal to each of these output circuits. A low-frequency therapeutic device, comprising a delay circuit for causing a timing difference between the timing signals input to the output circuits.