JPS62227370A - Low frequency electric remedy device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a low-frequency electric therapy device that exerts a therapeutic effect by repeatedly applying low-frequency electric stimulation to a plurality of treatment points on a patient. Regarding the signal processing circuit, which is one of the components of the invention for which a patent application was previously filed (Japanese Patent Application No. 1989-19899), by incorporating a circuit configuration that has never been used in similar devices in the past, the overall system In addition to simplifying the configuration, this has achieved the objective of increasing the flexibility and diversification of equipment operation.

As shown in FIG. 1, the above-mentioned applied invention comprises a microcomputer circuit 1 whose main components include a microprocessor, a storage circuit, and a peripheral interface, each of which has a plurality of signal input terminals and a plurality of signal input terminals;
It is constituted by a signal processing circuit 2 that is individually attached to the signal output terminal and performs waveform conversion and amplification of electric signals. Each signal processing circuit is attached with a control terminal and a counter terminal for extracting the signal.

The microcomputer circuit 1 determines the desired treatment area by a signal applied via a signal input terminal.

Depending on the situation, the signal output terminals involved in signal output, that is, the actual terminals, are designated. The role of this microcomputer is to
Sequentially repeating the operation of producing an electrical signal, and that the electrical signal has one frequency and one frequency per terminal.
The method is to accept that the number of pulses appearing or the signal duration for each pulse is set in advance, and to output the signal according to the settings.

The invention of the present application relates to one embodiment of the signal processing circuit 2 included in the above-mentioned prior invention, and its basic circuit is shown in FIG.

Since the signal processing circuits 2 shown in FIG. 1 all have the same circuit configuration, FIG. Shows the circuit. 3 is a photocoupler.

In this embodiment, a combination of light emitting diodes and photo1-transistors is used. The present invention is.

The type of photo coupler is not limited.

Input terminals Bi and GND of this photocoupler are connected to output terminals B and GND of the microcomputer circuit 1 shown in FIG. 1, respectively. Therefore, the output voltage of the DC power supply circuit 4 appears between the control terminal C and the counter terminal C'L in synchronization with the output of the output terminal Bi of the microcomputer circuit.

The circuit portion of this signal processing circuit excluding the light emitting element of the photocoupler (in the illustrated example, a light emitting diode) and the Kugata circuit of that element is the therapeutic output circuit.

D and D' are AC input terminals of the DC power supply circuit 4. Figure 2'y11. Although the DC power supply circuit 4 shown in FIG. 4 is a widely used and well-known rectifier circuit, the present invention does not specify the configuration of the DC power supply circuit, and a battery may be used as the DC power supply. can.

Furthermore, if Mr. JigltrIA allows it, it is also possible to share one power supply circuit, as shown in Fig. 3.

In FIG. 3, individual input terminal B of each photocoupler 3
, B2, . . . , Bn and the common input terminal GND are respectively connected to the output terminals B□, B2, . C□, c2,..., Cn are the control terminals, C'iC
10, . . . , C'n are counter terminals corresponding to the respective polar terminals.

FIG. 4 shows a signal processing circuit 2 for generating therapeutic electrical pulses of both forward and reverse polarities. BL and Bn ten (destination =
1.2, . . . , n) are connected to the output terminals Bj- and Bn+ of the microcomputer circuit 1 shown in FIG. 1, respectively. A signal involved in generating an electric pulse of positive polarity appears at the output terminal Bj-, and a signal involved in generating an electric pulse of opposite polarity appears at the output terminal Bn+L.

The characteristic of the circuit configuration shown in FIG.
The signal is input to each photocoupler via the interlock circuit 5.

The purpose of this interlock circuit is to prevent damage to the therapeutic output circuitry due to microcomputer programming errors or noise disturbances. That is, in the event that similar outputs occur at terminals Bi and B n +L, the interlock circuit 5 will
Since the inputs of the two photocouplers corresponding to these outputs are cut off at the same time, there is no short circuit between the therapeutic output circuits including both of them.

Next, the effects of the present invention will be mentioned. FIG. 5 shows, by way of a specific example, that the present invention enables diversification of generation patterns of therapeutic electric pulses.

The example diagram shows four sets of terminals C knee C+1, c2-c'2, C3.
A case is shown in which treatment electrodes are connected to C'3 and c4-c'.

t (seconds) is the pulse width. Since the terminals where this pulse appears shift sequentially, T time (seconds) is the transition interval. TA (seconds) is the period of pulse appearance at an arbitrary terminal when paying attention to that terminal. TV (seconds) is the first terminal C after the pulse appearance goes around each terminal.
This is the waiting time until the next pulse appears at 1-C'.

Even if the appearance pattern of therapeutic electric pulses is complex as shown above, in the electric therapy device of the present invention, the pattern can be easily controlled by selecting the content of the program to be given to the microcomputer without modifying the circuit configuration. , is feasible.

Furthermore, compared to conventional signal processing devices, conventional devices apply waveform shaping to the output signal of the one-period pulse generation circuit using a differentiating circuit, and also use a high-frequency transformer to transform the output signal into a signal that is necessary for treatment. A method was used in which the voltage was increased to a certain voltage, and the pulses thus obtained were distributed to each therapeutic output terminal. Therefore, when it becomes necessary to significantly change the pulse period, it is often not possible to meet the request from the viewpoint of impedance matching of the high frequency lance.

In the signal processing circuit included in the device of the present invention, an electric pulse synchronized with the output signal of the microcomputer is extracted from a DC power supply circuit having the required voltage, so a high frequency transformer is not required.

Therefore, all design constraints due to impedance matching of high frequency transformers are eliminated. Also.

Without relying on a differential circuit, the pulse width can be freely selected and applied to treatment by programming the microcomputer.

Since the signal output circuit of the microcombinator 121 and the therapeutic pulse output circuit are electrically insulated by a photocoupler, it is easy to take safety measures against the human body in one circuit.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the structure of the apparatus of the present invention, and FIG. 2 is an electric circuit diagram showing the basic structure of the signal processing circuit shown as a block in FIG. 3 and 4 are electrical circuit diagrams of an embodiment derived from the basic configuration shown in FIG. 2. FIG. In Figures 1 to 4, 1 is a microcombiner circuit, 2 is a signal processing circuit, 3 is a photo coupler, and 4 is a microcombiner circuit.
is a DC power supply circuit. Figure 5 shows each therapeutic pulse output terminal C knee C''c2-
It is a voltage waveform chart showing the appearance pattern of electric pulses at c'2, c, -c', and c, -c'.

Claims (1)

[Claims] 1) The main components are a microprocessor, a storage circuit, and a peripheral interface, each of which has a microcomputer circuit with a plurality of signal input terminals and signal output terminals, and a microcomputer circuit that is individually attached to the signal output terminal and which outputs electrical signals. It is a circuit that performs waveform conversion and amplification of the microcomputer circuit, and is composed of a signal processing circuit that has a polar terminal and a counter terminal for taking out the output. On the other hand, it is a method that repeats the operation of making electrical signals appear one after another.
A low frequency electric therapy device configured to be used by setting the frequency of the electric signal and the number of pulses per terminal or signal duration time in advance,
A treatment in which an electric pulse of a required voltage is caused to appear between a positive terminal and a counter terminal belonging to each signal processing circuit, using at least one photocoupler in each of the signal processing circuits. 1. A low-frequency electric therapy device, wherein both an output circuit for a computer and an output circuit of the microcomputer circuit maintain an electrically insulating relationship with each other, and the circuit is configured such that both are synchronized with respect to onset and disappearance of output.