JP2558836Y2 - Biological signal measurement device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a biological signal measuring apparatus for measuring a biological signal of a subject, and more particularly to a biological signal measuring apparatus for measuring a biological signal by converting it into a telemeter (cordless).

[0002]

2. Description of the Related Art At present, there are an electrocardiograph, a thermometer and the like as this kind of biological signal measuring device. In recent years, with the development of electronic technology, biological signal measurement has been telemetered and transmitted to a measurement device or a monitor device. Particularly in an electrocardiograph, a subject carries a transmitter,
A system in which an electrocardiogram signal is transmitted from this transmitter to a monitor device or the like provided in a nurse station or the like and monitored is in widespread use.

Further, as a multi-phenomenon telemeter system,
A device that transmits body temperature, blood pressure, electrocardiogram, and the like from a transmitter fixed to a bedside to a nurse station or the like has been practically used and used.

[0004]

However, in both the telemeter system and the multi-phenomenon telemeter system described above, a sensor unit (e.g., an electrocardiographic electrode, a temperature sensor, etc.) for measuring a biological signal, which is mounted on the subject, is used. ) And the transmitter are connected by a signal cable or the like, so that the subject has a remarkable sense of restraint. In addition, there is a possibility that a contact failure may occur at a contact portion between the signal cable and the sensor unit due to a body motion of the subject, and there is a problem in long-term measurement stability.

The present invention has been made in view of such a problem, and an object of the present invention is to improve a feeling of restraint of a subject and stabilize a living body for a long period of time, thereby realizing a telemetered living body. It is to provide a signal measuring device.

[0006]

According to the present invention, there is provided a sensor comprising three electrodes for detecting a biological signal, and a biological signal detected by each electrode of the sensor which is provided on the outside. In a biological signal measurement device having a transmitting unit for transmitting power to the unit and a power supply unit for supplying power to the transmitting unit, the transmitting unit integrally includes a power supply unit, and the transmitting unit includes the three electrode units. It is formed so as to be directly detachable by fitting to any one of the electrodes.
And three signal lines corresponding to the signal lines from the three electrode parts
The contact forms a contact that is in flush contact with the transmitter
The biological signal detected by each of the three electrode units is configured to be input, and the electrode units are disposable.
The transmission unit is configured to be reusable.

With such a configuration, in the biological signal measuring device of the present invention, since the sensor unit and the transmitting unit for measuring the biological signal are integrated, the sense of restraint of the subject is significantly improved. In addition, since there is no signal cable between the transmission unit and each electrode unit of the sensor unit as in the conventional case, an extra connection point is eliminated, and therefore, stable measurement can be performed for a long time. , Reliability is improved. Moreover, the fitting to the transmission unit is the electrode unit, the shape to be freely directly detachable
3 corresponding to the signal lines from the three electrode portions.
The two contacts form a contact that makes flush contact, so that the electrode portion can be made a disposable (disposable) product, which is hygienic and convenient to handle, while contacting the subject. It is also economical because only the transmitters that do not can be reused.

In the biological signal measuring device according to the present invention, the plurality of electrode portions and the plurality of signal lines for electrically connecting the electrode portions are integrated by a flexible member.
This further improves the sense of restraint of the subject.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to the drawings.

FIG. 2 shows an example in which a biological signal measuring device according to an embodiment of the present invention is applied to an electrocardiograph.
FIG. This device is used for the subject 10
ECG electrodes 11 to 1 attached to the measurement site on the chest
3 and a long-time electrocardiograph 14 worn on the waist of the subject 10. The electrocardiographic electrodes 11 to 13 detect potential changes on the surface of the subject 10 and extract electrocardiogram signals, respectively. The electrocardiographic electrodes 11 to 13 constitute a sensor unit.

Each support of the electrocardiographic electrodes 11 to 13 is made of a flexible resin such as urethane. A transmitter 15 is mounted in one of the electrocardiographic electrodes 11 to 13, for example, in the electrocardiographic electrode 13, as shown in FIG. The transmitter 15 has a structure that can be attached to and detached from the electrocardiographic electrode 13. That is, the transmitter 15
The three contacts 50, 51, 52 on the side of the electrocardiographic electrode 13 correspond to the contacts 50, 51, 52 on the side of the transmitter 15.
Provided with three contacts 53, 54, 55
Is attached to the electrocardiographic electrode 13, the contacts 50, 51, 52 and the corresponding contacts 53, 54, 55 are electrically connected to each other.

An electrode plate 18 is provided below the contacts 53, 54, 55 on the electrocardiographic electrode 13. The electrode plate 18 and the contact point 52 are electrically connected by a signal line 19, and an electrocardiogram signal detected by the electrode plate 18 is directly input to the transmitter 15 via the signal line 19. .
The electrode plate 18 is formed of, for example, silver / silver chloride. The electrolyte gel layer 2 is provided between the electrode plate 18 and the subject 10.
3 is provided, and the entire electrode is adhered to the chest of the subject by an adhesive layer 24 provided around the electrolyte gel layer 23. The surfaces of the adhesive layer 24 and the electrolyte gel layer 23 are covered and protected by a film (not shown) when not in use.

The other electrocardiographic electrodes 11 and 12 have a structure in which electrode plates 20 and 21 having the same configuration as the electrode plate 18 are disposed on the same electrolyte gel layer as the electrolyte gel layer 23, respectively.

The electrocardiographic electrode 13 and the other electrocardiographic electrodes 11 and 12 are connected by signal lines 16 and 17. The signal line 16 is connected to the contact 54 in the electrocardiographic electrode 13, and the signal line 17 is connected to the contact 53. That is, the ECG signal detected by the ECG electrodes 11 and 12 is
4, 51 and contacts 53, 50, respectively, to be input to the transmitter 15. Therefore, all the electrocardiogram signals detected by the electrocardiographic electrodes 11 to 13 are input to the transmitter 15. Signal line 16,
Reference numeral 17 is integrated with the electrocardiographic electrodes 11 to 13 by a support 22 formed of a flexible resin, for example, urethane.

FIG. 4 shows a circuit configuration of the transmitter 15 in the electrocardiographic electrode 13.

The transmitter 15 amplifies an input signal to a predetermined level and outputs the amplified signal. A modulator 26 modulates an output signal of the amplifier 25 into a modulated wave in a radio band required for transmission. A transmitting unit 27 for transmitting the output of the unit 26;
And an amplifier 25, a modulator 26, and a transmitter 27.
And a power supply unit 29 for supplying necessary power to each unit. The power supply unit 29 is composed of a primary battery or a secondary battery, and the other signal processing units such as the amplification unit 25, the modulation unit 26, and the transmission unit 27 are integrated on, for example, one or a plurality of IC (integrated circuit) chips. ing.

On the other hand, as shown in FIG. 5, a long-time electrocardiograph 14 receives a transmission wave 28 output from the transmission unit 15 and converts a received signal of the reception unit 30 into an original electrocardiogram signal. A demodulation unit 31 for demodulating, an analysis recording unit 3 for analyzing and recording an electrocardiogram signal output from the demodulation unit 31
2 and a power supply unit 33 for supplying power to each unit. The power supply unit 33 has the same configuration as the power supply unit 29 on the transmitter 15 side.

Next, the operation of the biological signal detecting device according to the present embodiment will be described.

First, the subject 10 wears the electrocardiograph 14 on his / her waist for a long time, and peels off a film (not shown) of each of the electrocardiographic electrodes 11 to 13 to expose the electrolyte gel layer 23 and the adhesive layer 24. Next, as shown in FIG. 2, the electrocardiographic electrodes 11 to 13 are adhered to the measurement site such as the chest, using the adhesive property of the adhesive layer 24. Thus, the electrocardiographic electrode 1
When 1 to 13 are attached, the electrolyte gel layer 23 of each of the electrocardiographic electrodes 11 to 13 comes into close contact with the body surface of the measurement site of the subject 10 and detects a change in the potential.

Here, in the electrocardiographic electrode 13, the potential change detected by the electrode plate 18 via the electrolyte gel layer 23 is
This electrocardiographic electrode 13 is connected via a signal line 19 as an electrocardiogram signal.
Is input to the transmitter 15 inside. On the other hand, the electrocardiogram signals detected at the other two electrocardiographic electrodes 11 and 12 are also input to the transmitter 15 of the electrocardiographic electrode 13 via the signal lines 16 and 17, respectively.

Each of the electrocardiographic electrodes 11 to 11 input to the transmitter 15
The electrocardiogram signals from 13 are each amplified to a predetermined level in the amplifier 25 and then input to the modulator 26. The electrocardiogram signals input to the modulation unit 26 are output to a transmission unit 27 after being modulated into radio wave bands required for transmission, and transmitted as a transmission wave 28 from the transmission unit 27.

The transmission wave 28 output from the transmitter 15 is
It is received by the receiving unit 30 of the electrocardiograph 14 for a long time. The signal received by the receiving unit 30 is demodulated again by the demodulation unit 31 as the original electrocardiogram signal, and then input to the analysis recording unit 32. The analysis recording unit 32 analyzes an input electrocardiogram signal and records necessary information like a conventional long-time electrocardiograph.

In the biological signal measuring apparatus of the present embodiment, the electrocardiographic electrodes 11 to 13 constituting the sensor section are integrated by the support 22 and the transmitter 15 is connected to one electrocardiographic electrode 13.
It is built in. That is, at the time of use, the electrocardiographic electrode 1
Because of the structure in which the transmitters 1 to 13 and the transmitter 15 are integrated, the sense of restraint for the examiner 10 is significantly improved as compared with the related art. In addition, since there is no signal cable between the transmitter 15 and the electrocardiographic electrodes 11 to 13 as in the related art, an extra connection point is eliminated. Therefore, the measurement is performed stably for a long time, and the reliability is improved.

Since the transmitter 15 is formed separately from the electrocardiographic electrode 13 and can be directly attached to and detached from the electrocardiographic electrode 13, the electrocardiographic electrode 13 and the other electrocardiographic electrodes 11 and 12 are formed.
Can be made a disposable product that can be used only once, which is good in terms of hygiene and handling, and is economical because the transmitter 15 that does not come into contact with the subject can be reused. In addition, since the battery as the power supply unit 29 has a limited life, it is preferable to handle the battery as disposable similarly to the electrocardiographic electrodes 11 to 13.

When the biological signal measuring device of the present invention is applied to an electrocardiogram monitor device used in an intensive care unit (ICU), a coronary artery intensive care unit (CCU) or the like, the configuration of the long-time electrocardiograph 14 is shown in FIG. May be represented as That is,
A display unit 34 is used instead of the analysis recording unit 32 shown in FIG.
The display unit 34 may be constituted by an electrocardiogram monitor.
Other configurations are the same as those in FIGS. 1 to 5, and thus description thereof is omitted.

In such a configuration, the transmission wave 28 output from the transmitter 15 is received by the reception unit 34 and then input to the demodulation unit 35, where the electrocardiogram signal is demodulated. The demodulated electrocardiogram signal is input to the display unit 34, and the display unit 3
At 4, the electrocardiogram waveform is displayed every moment and monitored by a doctor or the like.

The present invention has been described with reference to the embodiments.
The present invention is not limited to the above embodiment, but can be variously changed without changing the gist of the present invention.

For example, in the above embodiment, the number of electrocardiogram electrodes for detecting an electrocardiogram signal is three, and the number of leads is 1. However, the number of electrocardiogram electrodes and the number of leads are arbitrary. For example, the electrocardiographic electrodes 11 to 13 may be connected to each other by branching the electrocardiographic electrodes 11 and 12 from the electrocardiographic electrode 13 as shown in FIG. Moreover, as shown in FIGS. 8 and 9, for example, it is needless to say that the electrocardiographic electrodes 40 and 41 can be added to expand to multiple leads. In this case, if the radio wave frequency of the transmission wave is made different for each guidance, the transmission can be performed without interference.

In the above embodiment, an example in which the biological signal measuring device of the present invention is applied to an electrocardiograph has been described. However, a heat collecting plate is provided at the skin contact portion of the electrocardiographic electrode, and a thermistor is provided. Accordingly, if the change in the resistance value of the thermistor is transmitted by radio waves using a transmitter, a body temperature signal can be transmitted together with an electrocardiogram signal, so that it can be applied in a complex manner.

Further, in the above embodiment, the case where the radio wave is used as the transmission wave has been described. However, it is needless to say that the transmission can be performed by ultrasonic waves or infrared rays.

[0031]

As described above, according to the biological signal measuring device of the first aspect, the transmitting section including the power supply section is integrated with any one of the plurality of electrode sections, and the transmitting section is integrated with the transmitting section. Since the biological signals detected by the plurality of electrodes are configured to be input, the sense of restraint of the subject is significantly improved. In addition, since there is no signal cable between the transmission unit and the sensor unit, an extra connection point is eliminated, so that measurement can be performed stably for a long time, and reliability is improved. Further, the transmitting unit is fitted to the electrode unit ,
It is formed to be directly detachable and has three electrodes
3 contacts corresponding to the signal line from the
Since the contact portion is formed so as to form a contact, the electrode portion excluding the transmitting portion can be disposable, which is hygienic, and the transmitting portion can be reused, which is economically excellent.

Further, according to the biological signal measuring device of the present invention, the plurality of electrode portions and the plurality of signal lines for electrically connecting the electrode portions are integrated by a flexible member. Therefore, the sense of restraint of the subject is further improved and the reliability is improved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a configuration of an electrocardiographic electrode including a transmitter of a biological signal measuring device according to an embodiment of the present invention.

FIG. 2 is a configuration diagram illustrating a state in which the entire biological signal measurement device of FIG. 1 is mounted on a subject.

FIG. 3 is a plan view showing a connection state of electrocardiographic electrodes of the biological signal measuring device of FIG.

FIG. 4 is a circuit configuration diagram illustrating a transmitter of the biological signal measurement device of FIG. 1;

FIG. 5 is a circuit configuration diagram illustrating a receiver of the biological signal measurement device of FIG. 1;

FIG. 6 is a circuit diagram showing another configuration of the receiver of the biological signal measuring device according to the present invention.

FIG. 7 is a plan view showing another connection state of the electrocardiographic electrode of the biological signal measuring device according to the present invention.

FIG. 8 is another configuration diagram illustrating a state in which the entire biological signal measurement device according to the present invention is mounted on a subject.

FIG. 9 is still another configuration diagram illustrating a state in which the entire biological signal measurement device according to the present invention is mounted on a subject.

[Explanation of symbols]

 Reference Signs List 10 subject 11 to 13 electrocardiographic electrode 14 long-time electrocardiograph 15 transmitter 16, 17, 19 signal line 18, 20, 21 electrode plate 23 electrolyte gel layer 24 adhesive layer 25 amplifying unit 26 modulating unit 27 transmitting unit 28 transmitting Wave 29 power supply unit 30 reception unit 31 demodulation unit 32 analysis recording unit 33 power supply unit

Claims (1)

(57) [Scope of request for utility model registration] 1. A sensor unit comprising three electrode units for detecting a biological signal, a transmitting unit for transmitting a biological signal detected by each electrode unit of the sensor unit to a receiving unit provided outside, in the biological signal measuring device with a power supply section supplying power to the transmitting unit, the transmission unit, and having integrally the power supply unit,
By fitting to either one electrode portion of said transmission unit is the three electrode portions, so as to freely direct detachable
And three signal lines corresponding to the signal lines from the three electrode portions.
The contact is configured to form a contact that makes a flush contact, and configured so that biological signals detected by the three electrode units are input to the transmission unit, wherein the electrode unit is disposable, and the transmission unit includes: A biological signal measuring device characterized in that it can be reused.