JPH02203869A - Electric stimulating device - Google Patents

Abstract

PURPOSE:To obtain an electric stimulating device taking into consideration of living body activities such as the circulation of blood by providing such a constitution as detecting a phase showing the contracting period and/or expanding period in wave-forms such as electrocardiogram and pulse waves of the signals obtained from a living body and giving an electric stimulation in a desired time phase. CONSTITUTION:A judgment means 2 takes out an electrocardiogram or blood signal from living body signals inputted from an input part 4 and judges and detects a time phase based on the amplitude, time and phase of the signal to output the corresponding signal, and a switching means 3 turns on and off the connection between an output means 1 and a conducting element 5 by the output signal of the judgment means 2. To conduct the stimulation by detection of the electrocardiogram, when an electrocardiogram signal is inputted from the input part 4 to the judgment means 2, the time phases of the contracting period and expanding period are detected from the electrocardiogram signal. In the expanding period, pulses are outputted from the judgment means 2 toward the switching means 3 to close the switching means 3, and a stimulation output outputted from a low frequency stimulation output means 1 is applied to the living body through the conducting element 5. Consequently, the circulation of blood is accelerated, and the stiffness of the shoulders and various troubles accompanied by the reduction in living body activities can be conquered.

Description

[Detailed description of the invention] FIELD OF THE INVENTION The present invention relates to electrical stimulation devices.

Electrical stimulation devices such as low-frequency therapy devices that apply electrical stimulation to the living body to alleviate stiff shoulders and treat pine surges, etc., promote treatment by causing reversible changes to the muscular nervous system. All of these are merely stimulating effects on one component of the living body, and the current situation is that electrical stimulation is performed without taking into account living activities such as blood circulation.

In view of the above, an object of the present invention is to provide an electrical stimulation device that takes biological activities such as blood circulation into consideration.

The features of the present invention when considering blood circulation are as follows.

As the heart beats, blood is forced into the arteries, passes through capillary defects, enters the veins, and returns to the heart.

Electrical stimulation is said to have the effect of stimulating and contracting the muscles around blood vessels or that make up blood vessels. This effect is beneficial in the sense of promoting blood circulation when it acts on non-pulsating veins, but on the contrary, when it acts on arteries during the pulsating period due to heart contraction, +flX fluid This results in obstruction of flow.

Based on this knowledge, the present invention aims to detect the phase (time phase) indicating systole and/or diastole in the waveforms of electrocardiograms (Fig. 2), pulse waves (Fig. 3), etc. obtained from living bodies. ) and provides electrical stimulation at a desired time.

Embodiments of the present invention will be described in detail below with reference to the drawings.

(1) is an output means, which outputs a pulse wave, an alternating wave, etc. having a frequency and amplitude that can be used for electrical therapy. More specifically, the output waveform described in Low Frequency Therapy Device No. 11806310 (published by Japan Industrial Standards Association) is exemplified.

Furthermore, in addition to the above-mentioned low frequency treatment device, (Patent Application No. 228 of 1982)
No. 499, Patent Application No. 107799 of 1982, Patent Application No. 1981
It is also possible to use an electrical stimulation device using interference waves as exemplified in Japanese Patent No. 33377) as the output means (1).

(2) is a discrimination means, which extracts an electrocardiogram or blood flow signal from the biological signal input from the input section (4), and determines the above-mentioned time phase based on the amplitude, time, phase, etc. of the signal. It distinguishes and detects and outputs the corresponding signal.

For example, to be specific, (Unexamined Japanese Patent Application No. 17597 of 1982
No. 9, Utility Model No. 60604 of 1982, Utility Model No. 4 of 1981
The pulse wave is detected by the method described in Japanese Utility Model Application No. 8203 and Japanese Utility Model Publication No. 188705 of 1988), and the time phase of the pulse wave is determined.

Or (Unexamined Japanese Patent Publication No. 32680 of 1972,
No. 32682 of 1982, JP-A No. 152581 of 1980, JP-A No. 45734 of 1981, JP-A No. 20394 of 1988
The electrocardiogram is detected by the method described in each publication (No. 6), and the time phase of cardiac contraction is determined.

(3) is a switching means, which turns on and off the connection between the output means (1) and the conductor (5) according to the output signal of the determining means (2).

The input part (4) is an electrode or a sensor, and its shape is as follows:
Depending on the object to be detected, it can be used as appropriate, such as by pasting or by mechanical connection such as by sandwiching the earlobe.

The conductor part (5) is connected to the affected or treated area, and may be attached, implanted in a living body, or fixed with a band or the like.

Next, the operation in the case of detecting an electrocardiogram in the above embodiment will be described in detail with reference to FIG.

An electrocardiogram signal (FIG. 2(a)) is input from the input section (4) to the determining means (2). In the discrimination means (2), the systolic and dilator time phases are detected from the electrocardiogram signal (Fig. 2, 7).
7> (a) (2a) (2b)). In this embodiment, during the diastolic phase (2b), a pulse (FIG. 2(b)) is output from the discriminating means (2) to the switching means (3). By means of this pulse, the switching means (3)
is closed, and the stimulation output 4 (FIG. 2(C)) output from the low frequency stimulation output means (1) is applied to the living body via the conductor (5).

That is, low frequency stimulation is applied to the conductor (5) only when the switching means (3) is closed. As described above, various forms of this low-frequency stimulation are possible, but as more specific examples, the waveforms shown in FIGS. 2(d) to 2(e) are shown.

In addition to the configuration shown in FIG. 1, the present invention may have an integrated configuration in which the operation of the low-frequency stimulation signal is started or stopped by the output signal of the determining means.

As described above, the present invention has the effect of promoting blood circulation through electrical stimulation, thereby having effects such as eliminating stiff shoulders and overcoming various obstacles associated with a decrease in biological activity.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing one embodiment of the present invention, and FIG. 2 is an output waveform diagram showing the operation of each component in FIG. 1. Figure 3 is a waveform diagram showing the pulsation of arterial waves...Low frequency stimulation output means, discrimination means, systole , ...Diastole, ...Switching means, ...
・Input section, ...... Conductor section.

Claims (1)

[Claims] (1) An electrical stimulation device characterized by comprising: a discrimination means for discriminating and detecting a time phase associated with heart beats from a biological signal; and an output means for outputting electrical stimulation in synchronization with the time phase.