JPH05337194A - Electric stimulation apparatus - Google Patents

Abstract

PURPOSE:To generate a stable stimulation of an interference wave in an expansion period by providing a gate signal controlled based on an expansion period signal in a biosignal detected at the same time between an oscillating means forming an alternative wave and an outputting means outputting the signal as two voltage-elevated alternative waves. CONSTITUTION:A pulse wave obtd. by means of photoelectric conversion from a finger etc., is output to an expansion period detecting means 12 through a biosignal transducer 11 and the expansion period detecting means 12 outputs an expansion period pulse. An alternative wave oscillator 13 outputs alternative waves each with a frequency difference respectively to switches A14 and B15 and when the expansion pulses stand up, they are fed to voltage-elevating means A16 and B17, which elevate each alternative wave in accordance with the number of winding and output to conductors A18 and B19 and conductors C20 and D21. When the expansion wave falls down again, the switches A14 and B15 are turned to a cut-off condition. It is possible thereby to make the expansion period and the stimulation of interference wave to coincide with each other with a simple means and surely.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an interferometric electrostimulator.

[0002]

2. Description of the Related Art An interferometric electrostimulator has two output sections, and these output sections have a number (K
(Hz) or higher frequency alternating waves are output, and in the living body, the alternating waves output from these output parts generate interference waves (beats), and the interference having the frequency of the above-mentioned frequency difference. A device that generates a wave stimulus, and a device using this operating principle has already been put to practical use.

[0003]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
When electrical stimulation is applied, at the same time, biological signals such as pulse and electrocardiogram are detected, and by applying stimulation during a period called diastole from this biological signal, a blood circulation promoting action that is incomparable to before is realized. .. An interferometric electrostimulator can also be expected to have even greater effects if it can be stimulated mainly during the expansion period, but in the case of an interferometric electrostimulator, a boosting alternating wave generated from two output terminals is formed. When the operation of the oscillator for the purpose of intermittent operation is intermittently changed during diastole, it takes some time for the oscillation of the oscillator to stabilize. Became.

[0004]

In view of the above, the present invention provides an alternating wave or an oscillating means for generating an alternating wave and an output means for outputting a signal output from this oscillator as two boosting alternating waves. The stable generation of the interference wave stimulus was realized during the expansion period by providing the gate means for controlling based on the expansion period signal in the biological signals detected at the same time. A feature of the present invention is that the operation of the oscillating means described above is not stopped, and the electrical connection between the oscillating means and the boosting alternating wave output means is connected in the expansion period and cut off in other periods. .. Since the interference wave is the frequency difference or phase difference between the two alternating waves, the oscillating means is always in the oscillating state, so that the frequency difference is always kept stable and the two boosting alternating waves are intermittent. The interference wave stimulus can be surely generated even if it is output by.

[0005]

FIG. 1 is a diagram showing an embodiment of the present invention.
Reference numeral (11) is a bio-signal converter, which is used for inputting or converting a bio-signal into an electric signal such as an electrode to be attached to a living body, an earlobe, a photoelectric transducer attached to the tip of the ear, or the like. Reference numeral (12) is a diastole detection means, which is processed and generated according to the character of the bioelectric signal obtained by the biosignal converter (11) and outputs a pulse indicating a diastole. Reference numeral (13) is an alternating wave oscillator, which outputs alternating waves having different frequencies or phases. (14) is a switch, which is turned on / off by an output pulse of the diastole detection means (12). (15) is a switch B, which has the same configuration as the switch A (14). The switch A and the switch B correspond to gate means. (16) is a booster A, an alternating wave oscillator
The output alternating wave in (13) is boosted, and mainly consists of a combination of a transformer and a power amplifier circuit. (17) is a boosting means B, which boosts the output alternating wave of the alternating wave oscillator (13), and has the same combination as the boosting means A (16).
Reference numeral (18) is a conductor A, which is attached or attached to the skin of a living body, and is mainly composed of a combination of a conductive member and a conductive adhesive gel, or a conductive member. Reference numeral (19) is a conductor B, which has the same structure as that of the conductor A (18). (20) is a conductor C and (21) is a conductor D, both of which have the same structure as the conductor A.

The connection state in the above-mentioned configurations is shown below.
The biological signal converter (11) is attached or attached to a living body, and is further connected to the diastole detection means (12) via the terminal (c). The diastole detection means (12) is connected to the switch A (1
4), connected to each of the control terminals of switch B (15). The alternating wave oscillator (13) has two output terminals (a) and (b).
(a) is connected to the input end of the switch A (14), and the output end (b) is connected to the input end of the switch B (15). The output end of the switch A (14) is connected to the input end of the booster A (16),
The output of (16) is connected to each of the conductor A (18) and the conductor (19). The output end of the switch B (15) is connected to the input end of the booster B (17), and the output of the booster B (17) is connected to the conductor C (20),
It is connected to each of the conductors (21).

Next, the operation of the above embodiment will be described in detail with reference to FIG. FIG. 2A is an example of a pulse wave obtained by photoelectric conversion from an earlobe, fingertip, or the like of a living body.
The biological signal converter (11) detects the pulse wave shown in FIG. 2 (1) as an electric signal and outputs it to the diastole detection means (12) via the terminal (c). The diastole detecting means (12) first detects the systolic pulse as shown in FIG. 2 (2). From the fall of the systolic pulse, a diastolic pulse having a predetermined time width is output to the terminal (d) (FIG. 2 (3)). This predetermined time width indicates an arbitrary time from the fall of the systolic pulse to the fall of the systolic pulse. The alternating wave oscillator (13) outputs the alternating wave shown in FIG. 2 (4) from the output end (a) and outputs the alternating wave shown in FIG. 2 (5) from the output end (b). The alternating wave output from the output end (b) is the output end (a)
Frequency difference fo (for example, 1, 2, 3 ...
(Hz)). The alternating wave at the output end (a) is output to the switch A (14), and the alternating wave at the output end (b) is output to the switch B (15). Switch A (14), Switch B (1
In 5), the cutoff state is formed until the expansion wave pulse shown in FIG. 2C rises. When the expansion pulse rises,
The switch B (15) forms a conducting state, and the alternating wave is supplied to the boosting means A (16) and the boosting means B (17). Boosting means (1
6) boosts this alternating wave according to the number of turns, and the conductor A (18),
Output to Miko B (19). The booster B (17) boosts the alternating wave according to the number of turns and outputs it to the conductor C (20) and the conductor D (21). When the expansion pulse falls again, switch A
(14) and the switch B (15) are turned off. At this time, the step-up alternating wave between the conductor A (18) and the conductor B (19) is shown in FIG.
0) and the boost alternating wave between the conductor D (21) are shown in FIG. 2 (7). In the living body to which the conductors A (18) to D (21) are attached or affixed, the interference stimulating wave of the frequency fo is formed in the state shown in FIG. 2 (8).

Next, another embodiment will be described. (31)
Is a photoelectric transducer, which is used by sandwiching the earlobe. As the photoelectric transducer, one in which an LED and a phototransistor face each other, one in which they are arranged in parallel, or the like is used. Reference numeral (32) is an amplifier that amplifies the pulse wave signal while having a filter function. Reference numeral (33) is a systole detecting means, which detects the peak of the pulse wave signal and outputs a pulse having a predetermined time width. Reference numeral (34) is a diastolic pulse output means, which outputs a pulse having a predetermined time from the trailing edge of the pulse output by the systole detection means (33).
(35) is a high-frequency pulse generating means for outputting a unipolar pulse of several (KHz) or more, and the phase difference between the pulse output from the output end (a1) and the pulse (a2) output from the output end is 18
There is 0 °. The pulse (a3) output from the output end and the pulse (a4) output from the output end have a phase difference of 180 °.
The frequency of the pulse output from the output terminals (a1) and (a2) and the frequency of the pulse output from the output terminals (a3) and (a4) are ±
It has a difference of fo (Hz). (36) to (39) are gate circuits, each of which has two inputs and one output, each having one input as a control end,
When the control end is "1", the other input end and the output end are in the same state, and when the control end is "0", the other input end is "0".
Whichever is "1", the state becomes "0". Switching means (40) to (43) are exemplified by NPN type transistors. (44) to (47) are filters, which cut off the sharp rising edge. Filters are connected as needed. (48) to (51) are boost inductors, and taps are provided in the middle between the primary and the secondary so that the tap portion is the primary side and (d) to (g) are the secondary sides. Output end (d) ~
Although not shown, (g) is a portion connected to the conductor. (3A) is a power supply adjusting unit, which adjusts the battery voltage Vcc to a predetermined voltage. Further, the power supply adjusting section (3A) has a control input section, and when a pulse is input to the control input section,
From the rising edge, the output is such that the voltage rises exponentially.

Next, the connection state of the above configurations will be described. The photoelectric transducer is connected to the input end of the amplifier (32), the output end of the amplifier (32) is the input end of the systole detection means (33), and the output end of the systole detection means (33) is the expansion end. Connected to the input terminal of the secondary pulse output means (34). One of the output terminals of the diastolic pulse output means (34) is connected to the control input terminal of the power supply adjusting section (3A), and the other output terminals are connected to the control terminals of the gate circuits (36) to (39). There is. Output terminal of high frequency pulse generator (35)
(a1) is connected to the other input end of the gate (36), and the output end (a2) is connected to the other input end of the gate (37). The output terminal (b1) of the high frequency pulse generating means (35) is connected to the other input terminal of the gate (38), and the output terminal (b2) is connected to the other input terminal of the gate (39). The output of the gate (36) is at the base of the switch (40), the output of the gate (37) is at the base of the switch (41),
The output of the gate (38) is connected to the base of the switch (42)
The output terminals of (39) are respectively connected to the bases of the switches (43). The collectors of the switches (40) to (43) are the power adjustment unit (3
It is connected to the output end of A). Switch (40) (41) (4
2) (43) has the emitter at one end of the filter (44) (45) (46) (47) and the other end of the filter (44) (45) (46) (47) at the boost inductor (48) (49 ) (50) (51) taps respectively, one end of the boost inductor (48) (49) is connected to the output end (d) main output end (e), and the other end is connected to the (−) side of the power supply. Connected. One end of the boost inductor (50) (51) is connected to the output end (f) and the output end (g),
The other end is connected to the (-) side of the power supply.

Next, the operation will be described. First, the power adjustment unit
The circuit operation when (3A) is set to supply a constant voltage will be described with reference to FIG. FIG. 4 (41) is a pulse wave signal, which is a waveform diagram converted into an electric signal by the photoelectric transducer (31). The pulse wave signal is amplified by the amplifier (32) and then converted into a systolic pulse in the systolic detection circuit (33). This is shown in FIG. 4 (42). The systolic pulse is input to the diastolic pulse output means (34), converted into the diastolic pulse shown in FIG. 4 (43), and output. Voltage adjustment means (3
A diastolic pulse is also output in A) but is ignored in this case. The output terminal (a1) of the high frequency pulse output means (35) is shown in FIG.
Output the pulse shown in 4). The output terminal (a2) of the high frequency pulse means (35) outputs the pulse shown in FIG. 4 (45). The output terminal (b1) of the high frequency pulse output means (35) is the output terminal (a1).
And a pulse having a frequency or phase different from that of the high frequency pulse output means (35) is output from the output terminal (b2) of the high frequency pulse output means (35). Gate (36)
Output terminal (d) when ~ (39) remains conductive
The output waveform during (e) is shown in FIG. The output waveform between the output terminals (f) and (g) is shown in FIG.
The pulse output to the output terminal (a1) is input to the other input of the gate (36). When the output from the diastole detection means (34) is "0", the output of the gate (36) is "0". When the output of the diastole detection means (34) is "1", the output of the gate (36) is "1" when the output pulse of the output terminal (a1) of the high frequency pulse output means (35) is "1", When the output pulse of the output terminal a2 is "0", it becomes "0". The switch (40) conducts when the output pulse is "1", and the electric energy of the power supply adjusting means (3A) is supplied to the filter (44) and the boost inductor (48). The step-up inductor (48) detects a change in the conduction wave current and outputs a pulse boosted according to the ratio of the input to the output between the output end (d) and the output end (e). When the pulse of the output terminal (a1) of the high frequency pulse oscillating means (35) falls, the switch (40) is turned off. Then high frequency pulse oscillation means
The pulse at the output end (a2) of (35) rises, and the switch (4
1) turns on. The voltage of the electric adjusting means (3A) is supplied to the boost inductor (49) via the filter (45). The boost inductor (49) catches the change in the supplied current,
A pulse boosted according to the turns ratio is output, but a pulse whose polarity direction is opposite to the pulse boosted by the boost inductor (48) is output between the output end (d) and the output end (e). . By continuing this, the boosting alternating wave shown in FIG. 4 (48) is output. Also, the output terminal (b) of the high frequency pulse oscillating means (35)
The pulses output from 1) and (b2) are also output terminals (a1) and (a2).
Following the same path as above, a boosting alternating wave is output between the output terminals (f) and (g). This is shown in FIG. 4 (49). The boost alternating wave as described above is output to the output terminals (d) (e) and the output terminals (f) (g) only when the output pulse of the diastolic pulse output means (34) is "1". It When each conductor connected to the output terminals (d) and (e) and each conductor connected to the output terminals (f) and (g) are attached to the human body,
In the human body, the output end (a1) of the high frequency pulse generation means (35)
The pulse frequency output from (a2) and the output terminal (a3)
An interference wave stimulus having a frequency different from the pulse frequency output from (a4) is formed. One example is shown in FIG.

Next, the operation when the output of the voltage adjusting means (3A) changes according to the output pulse of the diastolic pulse output means will be described with reference to FIG. FIG. 5 (41) corresponds to FIG.
It is the same as 1). Diastolic pulse (34) is diastolic pulse (5
When (2) is output, the gates (36) to (39) are turned on,
Furthermore, the output of the voltage adjusting means (3A) rises exponentially from the rise of the diastolic pulse. This is shown in FIG. 5 (52). The alternating wave boosted by the boost inductor is also shown in FIG.
(53), proportionally increases as shown in FIG. 5 (54). Therefore, the amplitude of the interference wave stimulus also rises exponentially. (Fig. 5
(55)) Such a mode is for alleviating the shock that occurs when the interference wave is actually intermittently supplied to the living body, and is very important in practice. In the present invention, the oscillation means and the output means for outputting the signal output from the oscillator as a boost alternating wave are mainly connected in the diastole, and the interruption operation is performed at other times. However, it is not necessary to completely block the other period (systole). In other words, in the diastole period, it is sufficient that the interference stimuli with higher density are output as compared with the other periods.

[0012]

As described above in detail, according to the present invention, an oscillating means for outputting an alternating wave signal or an alternating wave generating pulse signal, and an output for outputting the above-mentioned signal outputted from the oscillating means as a boosting alternating wave. By mainly connecting the electrical connection with the means during the extension period detected from the biological signal, there is an effect that the extension period and the interference wave stimulus can be surely matched with each other by a simple means.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a waveform diagram of each part of FIG.

FIG. 3 is a diagram showing another embodiment of the present invention.

[Figure 4]

5 is a waveform diagram of each part of FIG.

[Explanation of symbols]

 11 Biosignal converter 12 Diastolic detection means 13 Oscillation means 14, 15 Switches 16, 17 Boosting means

Claims (1)

[Claims] 1. A first oscillating means for oscillating an alternating wave generating signal, a first output means for outputting an alternating wave generating signal output from the first oscillating means as a boosting alternating wave, a first
Second oscillating means for oscillating a signal having a frequency or phase different from that of the alternating wave generating signal output by the oscillating means, and a second oscillating means for outputting the alternating wave generating signal output from the second oscillating means as a boosting alternating wave. Two output means, an electrical connection between the first oscillating means and the first output means, and an electrical connection between the second oscillating means and the second output means are obtained from a biological signal. An electric stimulator comprising gate means for controlling based on a diastolic signal.