JPH0731599A - Portable electrocardiogram long time recording device - Google Patents

Abstract

PURPOSE:To enable multichannel long time recording, to improve waveform quality and to store much data by recording an electrocardiogram as digital signals on a removable miniature optical disc. CONSTITUTION:A portable electrocardiogram long time recording device comprises a case main body 7, electrodes 1, 2, 3, 4 which closely adhere to the skin of a living body to induce an electrocardiogram signal, and a removable miniature optical disc 6 where electrocardiogram signals induced through the electrodes are recorded.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable electrocardiogram long-term recording device, and more particularly to a portable electrocardiogram long-term recording device for recording a multi-channel electrocardiogram on a removable optical mini disk instead of an IC memory.

[0002]

2. Description of the Related Art In general, a portable electrocardiogram long-term recording device is a recording device for recording an electrocardiogram of a heart disease patient for a long time while being mounted on the body. It is well known that the electrocardiogram of a patient with heart disease is usually recorded by an electrocardiograph installed in a hospital. However, the electrocardiogram obtained by this electrocardiograph was recorded within a very short time and in a state where the patient was at rest. Arrhythmia, which is a typical example of heart disease, has a normal pulse (60 to 100 /
Minutes) faster or slower or atrial, nodular, on ECG
Ventricular rhythm abnormalities are seen and the range is very wide. Therefore, it is often the case that an arrhythmia that occurs as a seizure cannot be easily detected only by an electrocardiogram recorded for a short time by the normal electrocardiograph. Further, the degree of paroxysmal angina and the load of the heart in daily life during rehabilitation cannot similarly be easily judged only from the electrocardiogram recorded in a short time in a rest state. In order to solve this, what has been frequently used from the past is a recorder that attaches to the body of a patient and records an electrocardiogram in a state where a load is applied for a long time of 24 hours while living a daily life, A Holter electrocardiograph comprising a regenerator for reproducing the recorded stress electrocardiogram offline. The present invention relates to a portable electrocardiogram long-term recording device corresponding to the above recorder. A conventional portable electrocardiogram long-time recorder is shown in FIG.
, The electrodes 100, 200, 300, 400,
500 and built-in IC for recording electrocardiogram induced from the electrode
A memory 600 is provided. The patient wears the case body 700 of this portable electrocardiogram long-term recording device with a band (not shown).
The electrode 100-500 is attached to the body via the skin, and the electrocardiogram derived from the electrode 100 or the like is stored in the IC memory 600 for a long time while actually living from getting up to going to bed. Record by digital signal. After the electrocardiogram is recorded in the IC memory 600, the case body 7 in which the IC memory 600 is built
If the patient takes 00 to the hospital at a later date, the doctor will play the regenerator 1.
By connecting the case main body 700 to 000 with the cord 800, the electrocardiogram recorded in the built-in IC memory 600 is reproduced on the recording paper 2000, and the symptom of the heart disease of the patient is analyzed.

[0003]

In the above-mentioned prior art (FIG. 3), the recording means for recording the electrocardiogram has a built-in IC.
The memory 600 has the following problems. (1) As is well known, the IC memory 600, which is a conventional recording means, has a small storage capacity. Therefore, conventionally, it has been difficult to record a multi-channel and long-time electrocardiogram such as 12-channel recording or 48-hour recording. (2) Further, since the IC memory 600 has a small storage capacity, the electrocardiogram induced from the patient's living body must be recorded in a compressed state. Therefore, the waveform quality of the electrocardiogram was poor. (3) Further, the IC memory 600 is built in the case body 700 as described above. Therefore, the electrocardiogram of the next patient cannot be recorded in the IC memory 600 until after the electrocardiogram of one patient is reproduced (FIG. 3).
Therefore, it has been difficult to store a lot of data. An object of the present invention is to enable long-term multi-channel recording and improve waveform quality by recording an electrocardiogram as a digital signal on a removable optical mini-disc in a portable electrocardiogram long-term recording device, and It is possible to store a lot of data.

[0004]

Means for Solving the Problems The above-mentioned problems are solved by a case main body 7 and electrodes 1, 2, 3, 4 arranged outside the case main body 7 for inducing an electrocardiogram signal in close contact with a skin surface of a living body.
This is solved by a portable electrocardiogram long-term recording device which records an electrocardiogram signal induced through the electrodes and comprises a removable optical mini disk 6.

As described above, according to the present invention, the electrodes 1, 2,
The electrocardiographic signal induced via 3 and 4 is recorded on the removable optical mini disk 6 instead of the conventional IC memory 600 (FIG. 3). This optical mini disc 6
Since the storage capacity is larger than that of the IC memory 600, 1
It is possible to record multi-channel and long-term ECG signals such as 2-channel recording and 48-hour recording. Further, since the optical mini disk 6 has a large storage capacity, it is not necessary to compress and record the electrocardiogram signal, and the waveform quality is good. Further, since the optical mini-disc 6 is removable, if the optical mini-disc 6 is replaced with a new one, the electrocardiographic signal of the next patient can be recorded and a large amount of data can be stored.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the accompanying drawings by way of embodiments. FIG. 1 is a diagram showing an embodiment of the present invention and shows a case of a two-channel portable electrocardiogram long-term recording device. In FIG. 1, reference numerals 1, 2, 3, 4
Is an electrode, 6 is an optical mini disk, 7 is a case body, and 8 is an optical mini disk driver.

The case body 7 is made of plastic, for example, and has a rectangular parallelepiped shape as a whole. The case body 7 contains an optical minidisk driver 8, a drive circuit 10, a power source 12, etc. (FIG. 2), and a lid 72 is screwed. If the built-in component is fixed by 72A and 72B and fails, the component can be replaced by opening the lid 72.

The electrodes 1, 2, 3, and 4 are conductors that are in close contact with the skin surface of the patient's body and induce an electrocardiographic signal, and the case body 7 is provided through the induction codes C1, C2, C3, and C4.
It is connected to the drive circuit 10 (FIG. 2) built in. Also, in the illustrated embodiment, another electrode E connected to the cord C5 is provided, which is the electrode 1,
By sticking to the skin surface of living body in the same manner as 2, 3, 4,
Acts as a ground for the drive circuit 10 (FIG. 2).

The optical mini disk 6 has electrodes 1, 2,
It is a recording means for digitally recording the electrocardiogram signal induced via the 3 and 4, and replaces the IC memory 600 (FIG. 3) which is the conventional recording means. The optical mini-disc 6 is a disc that is detachable and can be attached and held by an optical mini-disc driver 8 described later to rotate. For example, the optical mini-disc 6 has a diameter of 3.5 inches and a storage capacity of 130 megabytes. An opening 5 is provided on the side surface 71 of the case body 7 (FIG. 1), and as shown by an arrow A, the optical mini disk 6 can be easily attached and detached through the opening 5. ing. The optical mini disk driver 8 is
As is well known, an optical head (not shown) for recording an electrocardiogram signal is used as a main component, which is built in the case body 7, and is rotated by rotating the mounted disc-shaped optical mini disk 6. The laser light emitted from the semiconductor laser oscillator forming the optical head is modulated on the mini disk 6 by the electrocardiographic signals S9 and S10 (FIG. 2) input, and the electrocardiographic signal is digitally recorded.

FIG. 2 is a diagram showing a driving circuit for operating the embodiment of the present invention. In FIG. 2, reference numeral 1
0 is a drive circuit, 10A is a first electrocardiographic amplifier, and 10B is a second
An electrocardiographic amplification unit, 10C is an A / D conversion unit, 10E is a system control unit, 6 is an optical mini disk, and 8 is an optical mini disk driver. The first electrocardiographic amplification unit 10A includes electrodes 1, 2
Electrocardiogram signal S of minute potential (about 1 mV) derived from
It is a device that takes the difference between 1 and S2, amplifies and outputs an amplified electrocardiogram signal S5. Similarly, the second electrocardiographic amplification unit 10B has a minute potential (about 1 mV) induced from the electrodes 3 and 4.
Of the electrocardiographic signals S3 and S4, and the amplified electrocardiographic signal S6 is output.

The A / D converter 10C is a device for inputting amplified electrocardiogram signals S5 and S6 which are analog signals, converting them into digital signals, and outputting digital amplified electrocardiogram signals S7 and S8.

The system control unit 10E is, for example, C
It is composed of a PU, receives the amplified electrocardiogram signals S7 and S8, and performs predetermined processing for analysis such as calculation of heart rate and recording on the optical mini disk 6, while controlling the overall operation and The device outputs signals S9 and S10.

The optical mini-disc 6 and the optical mini-disc driver 8 constitute an optical disc device, and by inputting the signals S9 and S10 output from the system controller 10E, the electrodes 1 and 2 are input as described above. The electrocardiographic signal induced via 3, 4 is recorded as a digital signal.

The operation of the above embodiment (FIG. 1) will be described below with reference to FIG. First, the optical mini-disc 6 is put into the case body 7 through the opening 5 and mounted on the optical mini-disc driver 8 to store the optical mini-disc 6 in the case body 7 and to electrocardiogram. The electrodes 1, 2, 3, 4 for inducing a signal and the ground electrode E (FIG. 1) are brought into close contact with the skin surface of the patient's body, and the power switch operating unit 11 shown in FIG. SW1 is closed, the voltage Vc of the power supply 12 is applied to each part of the drive circuit 10, and the drive circuit 10 starts to operate.

The electrocardiographic signals S1, S2 and S3, S4 induced by the electrodes 1, 2 and 3, 4 are transferred to the first electrocardiographic amplification section 10.
A and the second electrocardiographic amplification unit 10B are respectively input, the differences between the electrocardiographic signals S1 and S2, S3 and S4 are amplified, and amplified electrocardiographic signals S5 and S6 are output. Amplified electrocardiogram signal S
5 and S6 are input to the A / D conversion unit 10C and digitally converted, and digitally amplified electrocardiogram signals S7 and S8 are output. The digital amplified electrocardiogram signals S7 and S8 are input to the system control unit 10E, and after various analysis and processing are performed, they are input to the optical minidisk driver 8 as signals S9 and S10, and as described above, It is recorded on the mini disc 6. The optical mini-disc 6 after the electrocardiogram signal has been recorded is removed from the optical mini-disc driver 8 and the opening 5
Through the case body 7 to the outside through the (arrow A),
When taken to a doctor, the recorded electrocardiogram signal is reproduced by a regenerator (not shown).

The reproduced electrocardiographic signal has good waveform quality, can be recorded on a multi-channel for a long time, and is recorded on a removable optical mini disk 6. Therefore, by exchanging the optical mini disk 6, A lot of data can be stored. In the embodiment shown in FIG. 1, a two-channel portable electrocardiogram long-term recording device has been described.
However, the present invention is not limited to this, and is generally applicable to not only one channel but also a multi-channel portable electrocardiogram long-term recording device.

[0016]

As described above, according to the present invention, the case body 7 and the electrodes 1, 2, 3, 4 arranged outside the case body 7 and closely contacting the skin surface of the living body to induce an electrocardiographic signal.
And a technical means of a portable electrocardiogram long-term recording device, which comprises an optical mini disk 6 for recording and recording an electrocardiogram signal induced through the electrode and being removable. According to this configuration, the electrocardiographic signal induced via the electrodes 1, 2, 3, 4 can be recorded on the removable optical mini disk 6. Since the optical mini disk 6 has a larger storage capacity than the IC memory 600, it is possible to record electrocardiogram signals of more channels such as 12-channel recording and 48-hour recording and for a longer time, and also the electrocardiographic signals are compressed and recorded. There is no need to do this, and the waveform quality has improved.
Further, since the optical mini-disc 6 is removable, if the optical mini-disc 6 is replaced with a new one, the electrocardiogram signal of the next patient can be recorded without reproducing the electrocardiogram signal recorded on the original optical mini-disc 6. It is possible to save a lot of data. That is, in the portable electrocardiogram long-term recording device, by recording the electrocardiogram on the removable optical mini-disc as a digital signal, it is possible to record for a long time on multiple channels, improve the waveform quality, and store a lot of data. The technical effect of enabling

[Brief description of drawings]

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

FIG. 2 is a diagram showing a drive circuit for operating an embodiment of the present invention.

FIG. 3 is an explanatory diagram of a conventional technique.

[Explanation of symbols]

 1, 2, 3, 4 electrodes 6 Optical mini disk 7 Case body

Claims (2)

[Claims] 1. A case main body 7, electrodes 1, 2, 3, 4 arranged outside the main body 7 of the body, which are in close contact with a skin surface of a living body and induce an electrocardiographic signal, and are guided through the electrodes. A portable long-term recording device for electrocardiogram, which comprises an optical mini disk 6 which records an electrocardiogram signal and which is removable. 2. The portable electrocardiogram long-time recording according to claim 1, wherein an opening 5 is provided on a front surface 71 of the case body 7, and the optical mini disk 6 can be attached and detached through the opening 5. apparatus.