JPH0228888Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention is a device for measuring and transmitting electrocardiogram waveforms, specifically, it is convenient to carry and can measure and store electrocardiogram waveforms extremely easily. The present invention also relates to a cardiac potential waveform measurement/transmission device that can immediately transmit what is being measured.

(Prior art and its problems) Electrocardiograms are generally taken in the clinical diagnosis of heart disease, and are convenient not only for the clinical diagnosis of heart disease but also for their prevention and health management in daily life.
Moreover, it would be extremely convenient if an electrocardiogram could be measured immediately as needed and a waveform that captured abnormalities in the myocardium, arrhythmia, etc. could be obtained.

Conventionally, as a portable electrocardiograph, there is a holder electrocardiograph which records electrocardiogram waveforms on a cassette tape. However, this holder electrocardiograph is complicated to install, and its shape and weight are relatively large, so it is a considerable burden for the patient to carry it, and it is difficult to predict when a heart attack will occur.
In addition, since it is temporary, there are many cases where no abnormality occurs even if a holder electrocardiograph is installed, and there is a drawback that a sufficient effect cannot be obtained in spite of the effort required.

For this reason, recently, small and lightweight electrocardiographs have been provided which have a built-in semiconductor memory and have improved the above-mentioned drawbacks. That is, this electrocardiograph generally has a disk shape with an appropriate thickness, and electrodes are provided on each of the upper and lower surfaces. In use, as shown in FIG. 10, the electrocardiograph 31 is held in the right hand 26 and pressed against a measurement site such as the chest of a human body 30 to perform measurements. In this case, one electrode is brought into contact with the chest, etc., and the other electrode is brought into contact with the palm of the hand to induce cardiac potential, but the shape is thin and disc-shaped, and force is applied during use. For example, the fingertip 26a may come into contact with the chest. Therefore, the potential difference between the right hand and the chest may decrease or disappear, or noise may be mixed in, making it difficult to accurately measure the cardiac potential waveform.

Also, when you become aware of an abnormality in heart disease or feel chest pain,
Even if it is possible to measure the cardiac potential waveform and store it in internal memory, conventional methods cannot transmit the cardiac potential waveform in real time using a telephone line, making it difficult to detect heart disease early. However, the disadvantage was that it lacked promptness in early diagnosis and early treatment.

In other words, heart disease has been increasing year by year in recent years, and has recently become the second leading cause of death.The prevalence of heart disease is particularly noticeable among people in their prime working age, and when they notice something abnormal, they can easily and quickly treat it. It not only measures the cardiac potential waveform and stores it in memory, but also transmits it to hospitals etc. in real time during measurement if necessary.
More than 90% of sudden deaths can be saved if appropriate advice is received from hospitals.

(Means for Solving the Problems) The present invention was proposed in view of the above points, and its purpose is to provide a compact, lightweight and portable device that can extremely easily generate accurate cardiac potential waveforms. Of course, it is important to measure, capture, and store
An object of the present invention is to provide a cardiac potential waveform measurement/transmission device capable of transmitting a cardiac potential waveform to the outside in real time.

That is, in order to achieve the above object, the present invention has a first part provided at the tip of the pencil-shaped main body.
an electrode, a second electrode spaced apart from the first electrode and provided on the outer periphery of the grip portion of the main body;
a storage means provided in the main body for storing the electrocardiogram waveform induced by the electrode and the first electrode; an output terminal provided on the main body for extracting the induced cardiac potential waveform to the outside, and a transmission device connected to this output terminal and capable of transmitting the cardiac potential waveform to a predetermined location via a telephone line in real time. It is composed of

(Function) The present invention has a pencil-shaped main body, which is small and lightweight, making it convenient to carry, and enables easy and accurate measurement of cardiac potential waveforms. It is capable of transmitting potential waveforms.

(Example) The present invention will be explained below with reference to the drawings.

FIG. 1 is a perspective view of the first embodiment of the present invention,
A generally disc-shaped first electrode 2 is provided at the tip of a pencil-shaped main body 1 made of insulating synthetic resin or the like and having the shape of a hollow round bar. A cylindrical second electrode 3 is provided on the outer grip portion. The first and second electrodes 2 and 3 are made of silver chloride electrodes, and are insulated from each other by the insulating portion 1a, and the planar shape of the first electrode 2 is selected as necessary, but usually about It is preferable to position it between the ribs at around 1 cm ² so that the cardiac potential waveform can be detected reliably. Also, the second
The electrode 3 is provided over the outer periphery, and is designed to ensure a sufficient contact area when gripped by hand. In addition, in the above, the main body 1 may have a polygonal shape.

Furthermore, a pocket pin 4 and a sliding switch S are provided at appropriate positions on the outer periphery of the end of the main body 1.
Further, a push-type actuation switch 5 having a well-known structure is provided at the end opposite to the first electrode 2 side.
In detail, in the center of this operating switch 5, there is a second
As shown in the figure, an output terminal 7 such as a female connector for data retrieval is provided to which a connecting terminal 6 such as a male connector can be attached or detached.

Returning to FIG. 1 again, a lead wire 1 is connected to the connection terminal 6, and this lead wire 1 can be connected to an input terminal 9 of the transmission device 8. This transmission device 8 is for transmitting the electrocardiogram waveform measured by the pencil-shaped main body 1 to a predetermined location in real time using a telephone line. A transmitter/speaker 10 is provided.

FIG. 3A shows the internal structure of the pencil-shaped main body 1, in which the first and second electrodes 2 and 3 are connected to an electronic circuit 11 provided inside. Further, the electronic circuit 11 is configured by incorporating various ICs etc. into a printed circuit board, and a power source 12 such as a lithium battery for the electronic circuit is provided between the electronic circuit 11 and the operating switch 5, and is used for turning on and off the power. The electronic circuit 11 is configured to be supplied with power 12 when the operating switch 5 is turned on. In addition, a lead wire for output transmission is connected between the output terminal 7 and the electronic circuit 8.
_l1 to _l3 are wired, and a circuit switching switch S is inserted between them. The common contact CS of this switch S is connected to the output terminal 7 via the lead wire _L3 , and the first contact _S1 receives the electrocardiogram waveform converted into a digital signal in real time via the lead wire _L3 . It is connected to send to output terminal 7. Further, the second contact S ₂ is connected via a lead wire l ₂ so as to send an internally stored electrocardiogram waveform to the output terminal 7 side when necessary, as will be described later.

3B is a schematic internal structure diagram of the transmission device 8, in which the input terminal 9 is connected to the electronic circuit 13,
The speaker 10 is driven by the output from the electronic circuit 13. Further, it is preferable to provide an output terminal 14 at a suitable position of the transmission device 8.

FIG. 4 shows a block diagram of the basic configuration of the electronic circuits 11 and 13, in which 15 is a cardiac potential amplifier connected to the first and second electrodes 2 and 3, and 16 is the output of this cardiac potential amplifier 15. 17 is an A/D converter, 18 is a memory such as a random access memory that stores the cardiac potential waveform in the form of a digital signal, and the power supply 12 shown in FIG. 3 is supplied as a backup power supply. However, it is of course possible to prepare another backup power source. 19 is a D/A converter, and 20 is an output amplifier connected to the output terminal 7. Also, 21 is A/
D converter 17, memory 18 and D/A converter 1
9, etc., and 22 is a clock signal generator that generates a clock signal that controls the timing of the entire system.

The electronic circuit 13 also includes a modulator 23 connected to the input terminal 9, and an amplifier 24 that amplifies the signal from the modulator 23 and applies it to the speaker 10.
By coupling the speaker 10 with a telephone transmitter, it is possible to transmit what is being measured or what has been measured and stored in the memory 18 to a predetermined location such as a hospital 25 using a telephone line. It is configured as follows. Note that it is of course possible to provide the modulator 23 and the amplifier 24 in the electronic circuit 11 on the main body 1 side.

Next, the operation of the present invention will be explained.

The pencil-shaped main body 1 of the present invention can be stored in the pocket of a suit or Y-shirt using a pocket pin 4,
It is small and lightweight, making it convenient to carry.

Therefore, in use, as shown in FIG. 5, for example, grip the main body 1 with the right hand 26, apply the first electrode 2 to the chest 27, and push in the operating switch 5 to turn it on. Further, since the second electrode 3 is provided on the outer peripheral surface of the main body 1, the contact area with the right hand 26 is large, and the second electrode 3 is provided on the outer peripheral surface of the main body 1.
is applied almost perpendicularly to the chest 27, so the right hand 2
6 and the chest 27 can be reliably isolated, and the fingertips will not come into contact with the chest 27. Therefore, there is no fear that the cardiac potential will decrease or disappear or that noise will be mixed in due to this.

Therefore, the cardiac potential between the right hand and the chest is amplified by the cardiac potential amplifier 15, and the signal passes through the filter circuit 16.
Frequency components of 200Hz or higher are attenuated and added to the A/D converter 17 to become a digital signal and stored in the memory 18.
The structure is such that the signal is stored in the memory and can be taken out to the outside when necessary.

Then, the signal of the cardiac potential waveform digitized in the memory 18 by the D/A converter 19 becomes an analog signal again, and the original cardiac potential waveform is amplified by the output amplifier 20, and the switch S is connected to the second contact _S2. If it is set to the side, it can be applied to the output terminal 7. Therefore, by connecting a display device such as a graphic printer to this output terminal 7, the electrocardiogram waveform stored in the memory 18 can be taken out and recorded. Alternatively, it may be connected to the transmission device 8.

On the other hand, in order to transmit the cardiac potential waveform being measured in real time, switch the contact of the switch S to the first contact S ₁ , and connect the output terminal 7 of the main body 1 and the input terminal 9 of the transmission device 8 to the connecting terminal 6 and the lead. The connection can be made via line l. In this case, the cardiac potential waveform induced by the first and second electrodes 2 and 3 is transmitted to the cardiac potential amplifier 15.
The signal is amplified by the filter circuit 16 and converted into a digital signal by the A/D converter 17, and the signal is sent to the modulator 23 through the lead wire l ₁ , the switch S, the output terminal 7, and the input terminal 9. The signal is modulated here and amplified by the amplifier 24 to drive the speaker 10. Therefore, as described above, if a telephone transmitter is appropriately connected to the speaker 10, the cardiac potential waveform can be transmitted to a predetermined location via a telephone line. Note that even in this case, the cardiac potential waveform at that time can be recorded in the memory 18. Further, the signal can be taken out from the output terminal 14 of the transmission device 8 and processed if necessary.

The block diagram shown in FIG. 4 is a basic configuration block, and a coupling capacitor for removing a DC signal is inserted between the first and second electrodes 2, 3 and the electrocardiogram amplifier 11, Of course, an instrument switch (none of which is shown) for discharging the charge accumulated in the coupling capacitor may be added as appropriate. In addition, an electronic circuit 1 is also provided on the transmission device 8 side.
Of course, it is also possible to provide a power source for the main body 1, or to supply power to the main body 1 when the input/output terminals 7 and 9 are connected.

Figures 6 and 7 show a second embodiment of the present invention,
This example is characterized in that a body temperature sensor 26 is attached to the grip portion, and a body temperature signal is obtained from the output signal of this body temperature sensor 26 by a body temperature detection circuit 27. Therefore, the device is configured so that the body temperature at that time can be measured and stored as data at the same time as the electrocardiogram waveform is measured.
Since the other configurations and operations are substantially the same as those in the first embodiment, the same members are denoted by the same reference numerals and explanations will be omitted.

FIG. 8 shows a third embodiment of the present invention, and this embodiment is characterized in that a display section 26 is provided in the transmission device 8. The position where this display section 26 is provided is not limited to the top surface, but may be on the side surface.

The display section 26 is a liquid crystal display, and can display only the cardiac potential waveform or body temperature.
Alternatively, both may be displayed. In this case, for example, as shown in FIG. Just drive it. In this case, it is optional whether the drive circuit 27 is provided on the main body 1 side or on the transmission device 8 side.

This embodiment is convenient because the cardiac potential waveform and body temperature can be easily determined visually.

(Effects of the invention) As described above, according to the invention, the main body has a round rod-like pencil shape, the first electrode of the body surface electrode is small, and the second electrode is provided on the outer periphery of the main body. Because of this, it is small and lightweight, making it suitable for carrying, and when you hold the main body and apply the body surface electrode at the tip to your chest, etc., the hand you are holding does not come into contact with your chest, etc., so the electrocardiogram waveform This has the effect of improving measurement accuracy.

In addition, since it is a pencil type, it is easy to measure by unbuttoning the Y-shirt and easily slipping the electrode onto the chest from outside the clothes. Ori,
It is possible to measure electrocardiogram waveforms with higher accuracy than those that measure other parts of the body, such as the wrist, which are far from the chest.

An activation switch is provided at the rear end of the pencil-shaped body, and when taking measurements, the activation switch is normally operated by pushing it in with the thumb, and since the thumb can be stably pressed against the chest, the thumb can be used securely. Electrodes can be pressed against the chest, allowing highly accurate cardiac potential waveform measurements to be made, and the device is easy to operate.

Furthermore, by connecting to a transmission device, the electrocardiogram waveform can be transmitted to a predetermined location in real time, and in the event of an abnormal situation, it is possible to take prompt and appropriate measures.

[Brief explanation of the drawing]

Fig. 1 is an external view of the first embodiment of the present invention, Fig. 2 is an explanatory diagram of the operating switch portion, Fig. 3 A and B are schematic explanatory diagrams of the internal structure, and Fig. 4 is an illustration of the electronic circuit of the present invention. A basic block diagram, FIG. 5 is an explanatory diagram of the operating state, FIG. 6 is a second embodiment of the present invention, FIG. 7 is a basic block diagram thereof, FIG. 8 is a third embodiment of the present invention, and FIG. An example of a basic drive circuit for realizing the above embodiment, and FIG. 10 is an explanatory diagram of a conventional example in use. 1... Main body, 2, 3... First and second electrodes, 7...
...Output terminal, 8...Transmission device.

Claims (1)

[Scope of utility model registration request] A first electrode for measuring the cardiac potential waveform provided at the tip of the pencil-shaped main body, and a concentric potential waveform provided at the outer periphery of the grip of the main body and spaced apart from the first electrode. a second electrode for storing a second electrode, a storage means provided in the main body for storing a cardiac potential waveform induced by the second electrode and the first electrode, and a second electrode for storing the cardiac potential waveform induced by the second electrode and the first electrode; an output terminal for taking out the waveform or the cardiac potential waveform induced by the first and second electrodes; and an output terminal connected to this output terminal and transmitting the cardiac potential waveform to a predetermined location via a telephone line in real time. 1. A cardiac potential waveform measurement/transmission device, characterized in that the output terminal is detachably provided in the center of a push-type operating switch provided at the rear end of the pencil-shaped main body.