JPH024319A - Long-time electrocardiogram analyzing device - Google Patents

Abstract

PURPOSE:To record the waveform satisfactorily in quality, to easily confirm the recording and to reduce unnecessary data collection by adding display function to read an electrocardiogram waveform, which is stored to a storing circuit in advance, or the analyzed result of an electrocardiogram and to display them to a longtime electrocardiogram analyzing device. CONSTITUTION:An electrocardiogram 1 to be led-out from an organism is passed through an amlifying circuit and an AD converting circuit and processed in an analysis arithmetic circuit and the analyzed result is stored and kept in a storing circuit 5. After prescribed analysis is executed, the analyzed result to be stored and kept in the storing circuit 5 is reproduced in an exclusive reproducing device and obtained on a recording paper, etc., as a hard copy. Then, the result is presented to the diagnosis of a doctor. When the quality of a representative waveform in a normal waveform or the presence and absence of an abnormal waveform is desired to be confirmed while the analysis processing is continued, the analyzed result is read from the storing circuit 5 by operating an operating part 8 and a waveform can be displayed on a display part 7.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a long-term electrocardiogram analysis device, and particularly to a long-term electrocardiogram analysis device that records biological signals.

[Conventional technology]

Conventionally, this type of long-term electrocardiogram analysis device records an electrocardiogram by having a subject carry a recording device equipped with a magnetic tape or semiconductor memory card, and then uses a dedicated playback device to read the recorded electrocardiogram waveform and analysis results. It was regenerated and presented to doctors for diagnosis.

[Problem to be solved by the invention]

The conventional long-term electrocardiogram analysis device described above simply records an electrocardiogram, and the quality of the recorded electrocardiogram cannot be confirmed unless it is played back using a dedicated playback device. In addition, in devices with an analysis function, the normal waveform when the subject is at rest is used as a representative waveform, and the normal waveform and abnormal waveform are recognized by comparing it with that waveform and checking whether they match. However, if normal waveforms are not taken with good quality, subsequent analysis will lack accuracy. However, there have been drawbacks such as there being no means to confirm the quality of this representative waveform of normal waveforms.

[Means to solve the problem]

The long-term electrocardiogram analysis device of the present invention includes an amplifier circuit that amplifies an electrocardiogram signal, an AD conversion circuit that digitizes the output of the amplifier circuit, and an analysis calculation circuit that analyzes the electrocardiogram waveform that is the output of the AD conversion circuit. , a storage circuit that stores the output of the analysis calculation circuit and the rhythm waveform of the subject in advance, and a display means that reads out and displays the rhythm waveform of the electrocardiogram stored in the storage circuit and the analysis result of the analysis calculation circuit. Prepared and configured.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

First, an overview of the present invention will be explained.

An electrocardiogram signal derived from a living body is amplified by an amplifier circuit, and then converted into a digital value by an AD conversion circuit. The digitally converted electrocardiogram signal is waveform-analyzed in an analysis/arithmetic circuit and classified into normal waveforms and abnormal waveforms.

At the same time, a tuning check is performed, and the analysis results are stored in the memory circuit.

A normal waveform is a rhythm waveform (sinus rhythm) unique to the subject recorded in the subject's resting state, and a waveform that does not match this waveform is considered an abnormal waveform.Therefore, all analyzes start with the normal waveform. If the normal waveform is not determined accurately, subsequent analysis will be inaccurate.However, with conventional long-term electrocardiogram analyzers, the waveform that is considered to be normal is analyzed for a certain period of time. I was worried that I could not check the results unless I played them on a special playback device.

Therefore, the present invention provides a display unit that can read data from a memory circuit and display it, and adds a function to display waveforms recognized as normal waveforms or abnormal waveforms, and performs long-term electrocardiogram analysis that allows waveform confirmation. The goal is to provide equipment.

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

1 is an electrocardiogram signal derived from a living body, 2 is an amplifier circuit for amplifying the electrocardiogram signal to a processable level, and 3 is an A for converting the amplified electrocardiogram signal into a digital value.
D conversion circuit, 4 is an analysis/arithmetic circuit that processes electrocardiograms,
5 is a memory circuit that stores analysis results; 6 is a readout/display circuit that reads data stored in the memory circuit and performs processing to output an electrocardiogram waveform to a display section; 7 is a display section; and 8 is data to be displayed. This is the operation section for instructing and selecting the type of the device.

An electrocardiogram signal 1 derived from a living body passes through an amplifier circuit/AD conversion circuit, is processed by an analysis/arithmetic circuit 4, and the analysis result is stored and stored in a storage circuit 5. A semiconductor memory card or the like is generally used as the memory circuit here.

When the analysis is started, a representative waveform of a normal waveform is first selected and stored in the storage circuit 5. After the representative waveform is determined, it is sequentially compared with this waveform, classified into normal waveforms and abnormal waveforms, and the analysis process is continued to analyze the type of abnormal waveform, frequency of occurrence, etc. At this time, the basis of everything is the representative waveform.

After a predetermined analysis has been performed, the analysis results stored in the storage circuit 5 are reproduced by a dedicated reproduction device, and are taken as a hard copy on recording paper or the like for diagnosis by a doctor.

While the analysis process is continuing, if you want to check the quality of the representative waveform of normal waveforms or the presence or absence of abnormal waveforms, read the waveform from the memory circuit by operating the operation unit 8 and display the waveform on the display unit. I can do it.

FIG. 2 shows an example of a representative waveform displayed on the display section 7.

Check the waveforms displayed in this way, check for artifacts such as electromyography and hum, check whether the representative waveform is well selected, and start over from the beginning if it is inappropriate. be able to. By checking the representative waveform immediately after determining it, it is possible to obtain accurate analysis results without waste, compared to the conventional method in which problems were discovered only after replaying the data after long-term analysis.

FIG. 3 shows an example of a perspective view of the long-term electrocardiogram analysis device 10 according to the present invention. It is sufficient for the display section 7 to display one heartbeat of the electrocardiogram waveform, and a small liquid crystal or the like can be used. The operating section 8 may include one switch.

〔Effect of the invention〕

As explained above, the present invention adds a display function that reads and displays electrocardiogram waveforms and electrocardiogram analysis results stored in advance in a storage circuit to a long-term electrocardiogram analyzer, thereby recording and confirming high-quality waveforms. This has the effect of making it easier to do so, reducing wasteful data collection, and reducing the burden on the subject.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention, FIG. 2 is a perspective view showing an example of a waveform display on the display section of FIG. 1,
FIG. 3 is a perspective view showing the appearance of an embodiment of the present invention. 1... Electrocardiogram signal, 2... Amplification circuit, 3... AD
Conversion circuit, 4...Analysis/arithmetic circuit, 5...Storage circuit, 6...Readout/display circuit, 7...Display section, 8...
Operation section.

Claims (1)

[Claims] an amplifier circuit that amplifies an electrocardiogram signal, an AD conversion circuit that digitizes the output of the amplifier circuit, and an analysis calculation circuit that analyzes the electrocardiogram waveform that is the output of the AD conversion circuit;
a storage circuit that stores the output of the analysis calculation circuit and the rhythm waveform of the subject in advance; and a display means that reads and displays the electrocardiogram rhythm waveform stored in the storage circuit and the analysis result of the analysis calculation circuit. A long-term electrocardiogram analysis device.