JPS608827B2 - electrotherapy device - Google Patents

Description

[Detailed description of the invention] The present invention relates to an electrotherapy device.

The present invention mainly applies low-frequency current to the human body, and can also be used with thermotherapy at the same time to treat diseases such as headaches, stiff shoulders, peripheral nerve paralysis, blindness, recovery from muscle fatigue, and other symptoms. The purpose of the present invention is to provide a new electrical therapy device with a high therapeutic effect, and the therapeutic current has a differential waveform with a sharp rise and a sharp feel, and an integral waveform with a slow rise and a soft feel. The current is adjusted and synthesized to enable treatment by selecting an appropriate therapeutic current depending on the constitution of the patient or the area to be treated.

This will be explained below along with examples.

In FIG. 1, the pulse generating means 1, which is a therapeutic current source and regulates the operation of the entire apparatus, is an asteful multivibrator whose frequency can be changed from the outside. .

This results in equally spaced fundamental square wave pulses (the second
Figure A) is input to an exclusive NOR gate 7 and a programmable 1/N counter 8, which will be described later.
This programmer full 1/N counter operates as an arbitrary base counter by externally applying the numerical value N in binary code to its preset data input terminals (DP, DP3). The encoder 4 can be made by a diode matrix method or by combining various logic gates, and when any one of the input terminals J to J8 is set to low level by the switching means 5, the corresponding 3-bit binary code is generated. are obtained as output, and these are input as preset data for the counter. For example, as shown in the figure, when the input terminal J3 is set to low level by the switching means 5, the encoder 1 outputs L, day, day,
This is the DP of the counter above. The counter operates as a ternary down counter. This counter starts from the preset value when the pulse from the above-mentioned Astafle multi-nocibrator goes off.
Each clock is counted down, and when it reaches zero, a pulse with the same pulse width as the clock pulse from the astaff multivibrator can be obtained. Therefore, when operating as a ternary counter, one square wave pulse (FIG. 2B) is obtained from the "0" terminal in the figure every time three input clocks are input from the astable multivibrator. This pulse is passed through an inverter 6 to an inverter 8 and an exclusive Eve N
It is input to OR gate {7]. On the other hand, this
As described above, the square wave pulse from the astaff multivibrator is inputted to the ZIB NOR gate with or without the delay circuit. Although this delay circuit is not provided in the one shown in the figure,
The phase difference between the pulses input from the counter side to the R gate and the pulses input from the astaffle multivibrator side is combined to prevent unexpected pulse outputs called hazards from occurring in the gate output. This is provided as necessary. Therefore, when the output pulse from the inverter 6 (Fig. 2C) and the pulse from the asteful multivibrator (Fig. 2A) are simultaneously input to the Exclusive NOR gate, the Exclusive NOR gate Since the gate is closed, the first pulse train (the second
Figure D) is obtained. Output pulse of inverter 6 (second
The polarity of FIG. is obtained. If the switching means 5 is changed and the counter is operated as an N-ary counter, the output of the exclusive NOR gate will have a pulse in which every N-1 pulse is missing, and the output of the inverter 8 will be gives a pulse corresponding to the missing pulse above. In addition, although the circuit shown in the figure employs an exclusive NOR gate, the same result as above can be obtained even if this gate is replaced with an AND gate, and inverter 6 and inverter 7
The logic circuit composed of exclusive NOR gates can also be replaced with a logic circuit that performs the same function by combining other logic gates. The above-mentioned first pulse train and second pulse train obtained by the above-mentioned exclusive NOR gate and inverter 8 are input to a mixed wave pulse train forming circuit 29, and a therapeutic current consisting of a mixed wave pulse train is obtained at its output.

A specific example of this mixed wave pulse train forming circuit is shown in the third section.
As shown in the figure. In the figure, the pulse train obtained by the above-mentioned exclusive NOR gate and inverter 8 is selectively supplied to an integrating circuit 10 and a differentiating circuit 11, which are waveform shaping means, by a switching means 9, and their outputs (FIG. 2F) , (FIG. 2G) are inputted via attenuators 12 and 13, respectively, to a composite amplification section 14 configured with a two-input Darlington connection of transistors Q, , Q2, and Q3. Since the emitter charges of transistors Q, .
A mixed wave pulse train obtained by combining the respective input pulse trains of Q2 is obtained at its emitter. This mixed wave pulse train (
) is led to the conductor 27 via the output connector 15. The attenuators 12 and 13 can be adjusted from the outside, so that the magnitude of the amplitude of the pulses to be mixed can be adjusted separately. Note that the time constants of the integrating circuit and differentiating circuit may be changed by external operation.

Inside the conductor 27, in addition to the electrode plate 31 connected to the output connector, a heating element 30 is provided so that thermotherapy and therapeutic current therapy can be performed at the same time. An electric heating circuit is formed to heat the heating element via 16. The temperature of the heating element can be adjusted using a switching means 17 by appropriately selecting the tap position of the autotransformer, while a pilot lamp 19 is provided between the terminals of the connector to adjust the temperature of the heating element. The higher it is, the brighter it becomes.

The conductor 27 is used for the affected area, and the conductor 28 is used for the acupuncture points, and the electrode plate inside this conductor is connected to the ground side of the device to form a return path for the therapeutic current. Although the conductor 28 shown in the figure is not provided with a heating element, this conductor may also be provided with a heating element. FIG. 4 shows another example for obtaining the first pulse train and the second pulse train to be input to the mixed wave pulse train forming circuit, in which the pulses obtained from the programmable 1/N counter 3 are input to the shift register and the flip-flop 2.
Used for resetting 3.

The shift register 20 that has the maximum number of clock bits to be delayed is appropriately used, the switching means 21 selects the desired bit, and the resulting pulse is used as a trigger for the flip-flop. The output of the flip-flop is connected to an AND gate and a NOR gate via a delay circuit 24.
The output of the pulse generating means 1 is input to the gate, while the output of the pulse generating means 1 is input to the gate.
Grammarful 1/N counter, shift register, NO
The R gate and the inverter 22 are respectively inputted, and the output of the inverter 22 is inputted to the AND gate. Figure 5 shows the programmable 1/N by the configuration shown in Figure 4.
The counter operates as a hexadecimal counter, and its “0”
``This is a time chart when the shift register is operated so that one pulse is output every four clocks after a pulse is generated at the terminal, and the symbols A, B, K, L, M, N, P, Q are shown.
is the waveform of the line corresponding to the same symbol shown in FIG.
The mixed wave pulse train obtained as a therapeutic current is as shown in FIG. That is, to explain its operation in detail, although it is omitted in the figure, when the power is turned off, each circuit is reset and each bit of the shift register is set to a low level, and then the programmable 1-N counter is reset to "0". When a pulse is generated at the ``terminal'', the flip-flop 23 is reset and the data 1 input terminal of the leftmost bit of the shift register 20 becomes high level.

On the other hand, since the shift clock input terminal of the shift register 20 is supplied with the basic square wave pulse train from the astable multi-nobrator, the shift register 2
The output of the leftmost bit of 0 goes high (in this description, it is assumed that the shift register 20 has been selected to shift to the right). When the next clock pulse enters the shift register, the "0" output of the programmable 1/N counter, that is, the data 1 input terminal of the shift register 20, is at a low level, so the high level state of the leftmost bit is at the right side of the pit. The leftmost bit becomes low level. In this way, each time the clock pulse (basic square wave pulse train) enters the shift register, one bit is shifted, and when the high level state shifts to the bit selected by the switching means 21, the flip-flop 23 is triggered. The flip-flop 2
3 output becomes high level. This high level state remains until the "0" output of the programmable 1/N counter 3 becomes high level, the leftmost bit data input terminal of the shift register 20 becomes high level again, and the flip-flop 23 is reset. last. Therefore, the programmable 1/N counter operates as a hexadecimal counter, and the shift register 20
Since the flip-flop 23 is set 4 clocks after the programmer full 1/N counter outputs "0", the set period of the flip-flop 23 is 2 clocks, and the reset period is 2 clocks. The period of the state is 4 clock periods, and this is repeated. The output of the flip-flop 23 is slightly delayed by a delay circuit 24, and the output is sent to the AND gate 25.
and is supplied to the NOR gate 26 as a control signal. Here, if we ignore a slight delay in the delay circuit for simplicity, the NOR gate is open during the reset state period (4 clock periods) of the flip-flop 23, and the AN
The D gate is closed, and conversely the flip-flop 23
During the set state period (two clock periods), the NOR gate is closed and the AND gate is opened. Since the NOR gate 26 is supplied with the basic pulse train of the asteful multivibrator 1,
The basic pulse train is transmitted to the output of the flip-flop 23 only during its reset state, and the first pulse train shown at Q in FIG. 5 is obtained at the output of the NOR gate 26. Further, since the basic pulse train of the astabil multivibrator is supplied to the AND gate 25 via the inverter 22, the pulse train having the same shape as the basic pulse train is supplied only during the set state of the flip-flop 23. A second pulse train shown at P in FIG. 5 is obtained at the output of the AND gate 25. As a means of obtaining pulses to be input to the mixed wave pulse train forming circuit, in addition to using a programmer full 1/N counter as described above, a normal digital counter and a digital comparator may be combined, or an arbitrary number can be selected. Various configurations can be made using a counter or the like.

Alternatively, instead of the pulse train obtained from an AND gate, a pulse train obtained from the "0" terminal of a programmable 1/N counter may be used, or other logic gates or flip-flop circuits may be used to create a pulse train with an appropriate waveform, and these may be mixed into waves. If the pulse train is synthesized by a pulse train forming circuit, a mixed wave pulse train having a pause period can be obtained as shown in Day 5 of FIG. It is also possible to obtain a mixed wave pulse train such as a graph ratio. It is also possible to apply the thus obtained mixed wave pulse train to a high frequency treatment device that modulates a high frequency wave with an appropriate frequency as a modulation signal. In addition,
The IJ set control circuit when the power is turned on is omitted. In the present invention, as described above, the treatment current is a combination of integral waveform and differential waveform, so the integral waveform has a soft feeling, and the differential waveform has a sharp feeling, and these are alternated. It can be applied to the patient's affected areas and acupuncture points, and the integral waveform amount and differential waveform amount can be changed by the first pulse train and the second pulse train, or by switching these pulse trains, so it can be applied to patients with severe stiff shoulders, etc. The patient is stimulated appropriately by increasing the amount of differential waveforms, or by using more integral waveforms in case of slight muscle fatigue, depending on the patient's disease type, fatigue, treatment area, constitution, age, etc. Appropriate treatment can be provided.

Furthermore, since the conductor that is applied to the affected area is equipped with a heating element whose temperature can be adjusted, in addition to the therapeutic effect obtained by synthesizing the integral and differential waveforms, it is possible to obtain an effective treatment while heating the affected area at an appropriate temperature for a certain period of time. Treatment can be performed and the treatment time can be shortened.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a block diagram, FIGS. 2 and 5 are time charts, FIG. 3 is a mixed wave pulse train forming circuit diagram, and FIG. 4 is a block diagram of another example. be. Figure 1 Figure 2 Figure 3 Figure 5

Claims (1)

[Claims] 1. Means for generating a first pulse train in which an appropriate number of pulses are missing from a basic pulse train having equally spaced pulses;
means for generating a second pulse train having a pulse at a position corresponding to the missing pulse, the first pulse train and the second pulse train being switchable and supplying one of the pulse trains to an integrating circuit and the other pulse train to a differentiating circuit; mixed wave pulse train forming means for synthesizing the obtained different waveforms and guiding them to the conductor;
An electrotherapy device comprising a heating element provided on at least one of the conductors, and an electric heating circuit for heating the heating element in a temperature controllable manner.