JPS62233145A - Apparatus for recording information of electrocardiograph - 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 [Field of Industrial Application] The present invention relates to an electrocardiogram information recording device, and more particularly to an electrocardiogram information recording device that is portable and capable of recording information for a long time.

[Conventional technology]

Generally, when diagnosing myocardial infarction, arrhythmia, etc. using electrocardiogram signals, abnormal symptoms often do not appear if the electrocardiogram is performed only during a limited period of time when the patient is at rest. For the purpose of confirming such symptoms, portable long-term electrocardiogram information recording devices have been devised that continuously monitor and record electrocardiograms during daily life and even extract abnormal areas. Conventionally, there are the following long-term electrocardiogram information recording methods of this type.

■ The first method is to record long-term electrocardiogram analog signals on magnetic tape using a small data recorder.
The magnetic tape is played back and analyzed using a separately prepared high-speed playback device at a speed faster than the tape running speed at the time of recording, and the entire recorded electrocardiogram, analysis results, and abnormal portion extraction results can be obtained in a short time. method. but,
When trying to perform higher-speed playback, the quality of the playback signal may deteriorate due to the performance limits of the magnetic tape playback head, and the time required for analysis may be shortened, resulting in a decrease in analysis accuracy. In this case, it took about 10 to 30 minutes to analyze one magnetic tape on which 24 hours of electrocardiograms were recorded.

In addition, with this method, it is not possible to grasp the entire situation during the recorded time unless the magnetic tape is played back and analyzed. Even in the case of accommodation charges where it was desired to understand the trends, it was necessary to play back and analyze the entire tape, taking the same amount of time as normal playback and analysis.

■ The second is to incorporate a microprocessor into the portable device, analyze the input electrocardiogram signal in real time, and store the analysis results and the extraction results of abnormal parts in a storage medium such as built-in semiconductor memory or digital magnetic tape. There is a method, but since this method does not record the entire electrocardiogram during the recording time, it is not possible to confirm the authenticity of the extracted abnormal part if the analysis is not performed accurately.

In addition, it is impossible to confirm in cases where abnormalities occur frequently and it is necessary to understand the entire electrocardiogram during the recording time, and if the storage medium used to store analysis results is a semiconductor memory, its storage capacity is limited. However, if an abnormality exceeding the storage capacity was detected, the accumulated data would be truncated.

In addition, although the contents of the memory are edited using a separately prepared data editing device and a report is output, it is necessary to connect the main body of the portable device to the editing device and transfer the data. , the operation became complicated, as it required time to transport the portable device to the location where the editing device was installed.

■ The third method is to incorporate a small data recorder, microprocessor, and semiconductor memory into a portable device, and while recording the electrocardiogram analog signal on a track with magnetic tape, it simultaneously performs real-time analysis and extracts the analysis results and abnormal parts from the magnetic tape. There is a method of recording on empty tracks of the tape, and all electrocardiograms during the recording time are recorded, as well as analysis results and abnormality extraction results, so some of the problems in the first and second points above can be solved. Although this problem has been solved, it is necessary to playback the tape in order to understand the changes in all trends during the recording time, and results cannot be obtained immediately. In addition, since analysis is performed using a microprocessor and semiconductor memory, it is necessary to copy and record the contents of the semiconductor memory onto magnetic tape after the analysis time is over, which is a complicated operation, and the functionality has only increased. The volume of the device was increasing.

[Problem that the invention seeks to solve]

As mentioned above, the problems of the conventional technology that the present invention aims to solve include a decline in playback quality due to the performance limits of the magnetic tape playback head for high-speed, short-time playback, and a decline in accuracy due to shortening analysis time. If there are any questions about the analysis results, they cannot be confirmed because all records are not kept, and to create a result report it is necessary to transfer the portable device to the location where the editing device is installed. When high-speed playback is performed repeatedly, phenomena such as scratches and bulges on the tape, expansion and contraction of the tape due to temperature, dirt on the playback head, etc., can result in degraded quality of the playback data and dropouts.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an electrocardiogram information recording device that solves the above-mentioned drawbacks.

[Means for solving problems]

The electrocardiogram information recording device of the present invention records an electrocardiogram signal acquired by a biological signal input electrode, and includes a first recording means for recording the electrocardiogram signal on a removable recording medium; a data processing means for performing an analysis operation on the electrocardiogram signal, and a second recording means for recording the analyzed result signal on a removable recording medium, the first recording means or the second recording means; The apparatus is characterized in that recording is performed at least on one side with the means.

[Practical example]

Next, the present invention will be described in detail with reference to drawings showing embodiments.

FIG. 1 is a block diagram showing the configuration of an embodiment of the invention, and FIG. 2 is an external view of the embodiment of the invention.

In FIG. 1, this embodiment includes a first recording means 1, a second recording means 2, a microprocessor 31, a read-only memory (hereinafter referred to as ROM) 32, and a random access memory (hereinafter referred to as RAM). ) 33, a clock signal generation section 34, a display control section 35, a display 36, an operation key control section 37, an operation key 38, an interface 4, and an electrocardiogram signal input electrode 5. There is.

The electrocardiogram signal input electrode 5 is attached to the human body, and the electrocardiogram signal is input to the interface 4. The interface 4 amplifies the electrocardiogram signal, performs analog-to-digital conversion, and outputs the digital signal to the data bus of the microprocessor 31. At the same time, the analog signal of the electrocardiogram signal is passed through the recorder control section 12 of the first recording means 1 as a clock signal. The signal including the time signal from the generator 34 is recorded on the cassette tape of the recorder 11.

On the other hand, the electrocardiogram signal digitized from the electrocardiogram signal input electrode 5 is input to the data bus through the interface 4 and is temporarily recorded in the RAM 33. This electrocardiogram is analyzed according to the electrocardiogram signal analysis program stored in the ROM 32 under the control of the microprocessor 31 and the clock signal from the clock signal generator 34, and the results are stored in the RAM 2 of the second recording means 2.
1 is stored. The second recording means 2 is composed of a card that can be separated from the device, and the RAM 21 mounted on this card is a semiconductor memory that can be read and written at high speed, and the battery 22 (for example, a lithium battery) is used.
It has high-speed operation and removable functions. Therefore, it can be used online or in a near-online state, and usually only the signals of abnormal parts of the analyzed results are recorded. Further, after the recording has been completed, the second recording means 2 is removed and the data is edited and a report is created using a separately prepared reproduction/editing device.

The operation keys 38 are used to designate the operation of the device, and the designation signal passes through the operation key control section 37. Various messages such as the operating status of the device and the results of analysis are transmitted from the data bus through the display control section 35 to the liquid crystal display. It is displayed on a display 36 consisting of, etc.

FIG. 2 is an external view of an embodiment of the present invention, in which the recorder 11 of the first recording means 1 records with a cassette magnetic tape inserted into the cassette magnetic tape insertion location 11A, and the display 36 shows a liquid crystal display. It was used. The second recording means 2 is a removable card-like device equipped with a RAM 21 backed up by a lithium battery 22 or the like. ,: A battery box 6 that accommodates a battery (for example, an alkaline manganese battery or a nickel-cadmium battery) used as a power source, which is incorporated into one recording device main body 7.
It can be easily carried by attaching it as a whole. The cover 7A serves to protect the cassette magnetic tape and prevent it from coming off.

Therefore, in the electrocardiogram information recording device of the present invention, in order to obtain only the entire electrocardiogram signal over a long period of time, it is possible to obtain only the first recording means consisting of a cassette magnetic tape, etc. In order to obtain only the extraction results, it is possible to obtain only the extraction results by attaching only the second recording means in the form of a card. When acquiring both of these pieces of information, it is sufficient to attach the first and second recording means at the same time.

The analysis results and abnormality extraction results are recorded on the card-shaped second recording means, so when the second recording means is connected to an editing device etc., the data can be transferred immediately since there is no mechanical tape drive. can.

The electrocardiogram signal corresponding to the recording of the second recording means (that is, the recording of the abnormal part) can be quickly searched from the first recording means by specifying the recording time and the like.

〔Effect of the invention〕

As explained above, the electrocardiogram information recording device of the present invention employs two types of recording means that can be easily attached and detached, and the signals corresponding to each are recorded. This makes it easier to operate tapes and connect to editing equipment, makes it easier to search for electrocardiogram signals that correspond to the recording of abnormal areas, and increases usage efficiency by replacing the recording medium of the recording means. Moreover, since no tape operations are performed other than when recording data with this device, the device is not only simple and compact, but also has the effect of not being affected by tape scratches, stretching, bulges, etc.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the invention, and FIG. 2 is an external view of the embodiment of the invention. 1...First recording means, 2...Second recording means, 4...Interface, 5...
...Electrocardiogram input electrode, 31...Microprocessor, 32...ROM, 33...RA
M, 35...Display control section, 36...
... Display, 37 ... Operation key control section, 38 ... Operation keys. Figure 1

Claims (1)

[Claims] In an electrocardiogram information recording device that records an electrocardiogram signal acquired by a biological signal input electrode, a first recording means records the electrocardiogram signal on a removable recording medium, and an analysis operation of the acquired electrocardiogram signal is performed. comprising a data processing means and a second recording means for recording the analyzed result signal on a removable recording medium, and records at least one of the first recording means and the second recording means. An electrocardiogram information recording device characterized by: