JPH01148236A - Electrocardiogram recording apparatus - Google Patents

Abstract

PURPOSE:To record the waveform of an electrocardiogram signal desired to be recorded from the first part thereof without omission when the waveform of said electrocardiogram signal appears while looking the waveform of the electrocardiogram signal, by containing a memory part where the electrocardiogram signal converted to digital quantity is successively stored and reading is performed from the older signal in a time siries manner and a memory control part for performing the control of the storing and reading operations of the electrocardiogram signal with respect to said memory part. CONSTITUTION:The electrocardiogram signal converted from analogne quantity to digital quantity by an A/D converter 2 is successively stored in a memory part 3 and displayed on a display part 6 as a waveform. When a waveform desired to be recorded appears during the observation of said waveform, the indication of the start of recording is outputted from an operation part 7 to record the waveform of the electrocardiogram signal, the operation part 7 can select and set the part on a time axis having to record the recording time zone of the waveform of the electrocardiogram signal. When the setting of the recording time zone is preliminarily performed before the start of recording is indicated, the electrocardiogram signal of the set time zone is read from the memory part 3 in a time series manner according to oldness when the indication of the start of recording is operated to be outputted to a recording part 5.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electrocardiogram recording device, and more particularly to an electrocardiogram recording device that can temporarily store the waveform of an input electrocardiogram signal and then record it on recording paper.

[Conventional technology]

FIG. 3 is a block diagram of an example of a conventional electrocardiogram recording device.

As shown in FIG. 3, the conventional electrocardiogram recording apparatus includes an amplifying section 1. Recording unit 15 for recording the amplified electrocardiogram signal. Display unit 16 for displaying the amplified electrocardiogram signal. It is composed of an operation section 17 that displays the electrocardiogram signal and instructs recording operations, and a control section 19 that controls the display section and the recording section. but,
Electrocardiogram recording devices that are not equipped with the display section 16 are also used.

In FIG. 3, an electrocardiogram signal input to the electrocardiogram recording device is amplified by an amplifying section 1 and sent to a display section 16, where it is displayed as a waveform of the electrocardiogram signal.
The waveform of the electrocardiogram signal displayed at 6 is observed, and when it is necessary to record the waveform, according to instructions from the operation unit 17,
It was recorded on recording paper in the recording section 15.

In the case of an electrocardiogram recording apparatus that does not include the display section 16, the electrocardiogram signal amplified by the amplification section 1 is directly recorded on a recording paper in the recording section 15 according to an instruction from the operation section 17.

[Problem that the invention seeks to solve]

The conventional electrocardiogram recording device described above can display and view the waveform of the electrocardiogram signal on the display section before recording the waveform of the electrocardiogram signal. Therefore, by selecting and recording only the waveform of the electrocardiogram signal that is necessary, , less recording paper is wasted.

However, even if you operate the operation unit after confirming that the waveform of the electrocardiogram signal that you want to record appears on the display, the recording unit will start recording the waveform after confirming the waveform of the electrocardiogram signal that will not be recorded. There was a problem in that the waveform of the electrocardiogram signal included in the time period up to that point was omitted from the recording.

Furthermore, when attempting to record all the electrocardiogram signals that one wishes to record, there is a problem in that all input electrocardiogram signals must be recorded at the risk of wasting recording paper.

An object of the present invention is to make it possible to record the waveform of the electrocardiogram signal to be recorded without omission from the first part when the waveform of the electrocardiogram signal to be recorded appears while watching the waveform of the electrocardiogram signal displayed on the display section. To provide an electrocardiogram recording device that eliminates unnecessary recording.

[Means for solving problems]

The electrocardiogram recording device of the present invention includes: an amplification section that amplifies an electrocardiogram signal; an A-D conversion section that converts the electrocardiogram signal outputted from the amplification section from an analog quantity to a digital quantity; and an electrocardiogram signal converted into a digital quantity. a storage section in which signals are sequentially stored and read out from the oldest signals in chronological order; a recording section that records the electrocardiogram signals read out from the storage section;
- a display section that displays the electrocardiogram signal output from the D conversion section; a main control section that controls the entire device; and operations for storing and reading out the electrocardiogram signal in the storage section according to control signals sent from the main control section. a storage control unit that controls the
and an operation section that sends an instruction signal to the main control section.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

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

In FIG. 1, the electrocardiogram recording apparatus includes an amplifier section 1. which amplifies a weak electrocardiogram signal sent from a measurement electrode to a signal level that can be converted from analog to digital. An A-D conversion section 2 that converts the analog electrocardiogram signal output from the amplifier section 1 into a digital electrocardiogram signal, and a storage section 3 that stores the digital electrocardiogram signal. A storage control section 4 that controls the storage section 3 according to a control signal from the main control section 8. Recording unit 5 for recording the waveform of the stored electrocardiogram signal on recording paper. A display section 6 that displays the waveform of the A-D converted electrocardiogram signal. It is comprised of an operating section 7 that instructs display and recording of the waveform of an electrocardiogram signal, and a main control section 8 that controls the entire apparatus according to instructions from the operating section 7.

In FIG. 1, the main control section 8 imposes timing control on the amplification section 1 and the A-D conversion section 2 based on the instruction signal from the operation section 7, and starts the operation of the recording section 5 and the display section 6, respectively. , or control the stop. Further, the main control section 8 has a function of determining the timing at which the storage control section 4 sends a control signal to the storage section 3 in order to cause the recording section 5 to start or stop storing the electrocardiogram signal.

The electrocardiogram signal amplified by the amplifying section 1 and converted from an analog quantity to a digital quantity by the A-D converting section 2 is stored in the storage section 3.
The signals are sequentially stored and displayed on the display panel of the display unit 6 as a waveform of an electrocardiogram signal. The waveform of the electrocardiogram signal displayed on the display section 6 is observed, and when a waveform desired to be recorded appears, the waveform of the electrocardiogram signal can be recorded by issuing an instruction to start recording from the operation section 7.

The operation unit 7 can select and set which portion on the time axis is to be used for recording the waveform of the electrocardiogram signal.

If you set the recording time zone before instructing to start recording,
When the recording start instruction is operated, the electrocardiogram signals of the set time period are read out from the storage section 3 in chronological order starting from the oldest signals and outputted to the recording section 5.

FIG. 2 is an operational explanatory diagram showing the relationship between the timing of an electrocardiogram signal recording start instruction and the recording time period.

When the electrocardiogram signal shown in FIG. 2 is input to the amplifying section 1 shown in FIG. The signal waveform is displayed.

When instructing the operation unit 7 to start recording at the timing shown in FIG. 2, as described above, select one of the recording time ranges (time zones indicated by a, b, and C) shown in FIG. , can be set. As can be seen from FIG. 2, the recording time period can be set not only for the time period after the recording start instruction, but also for the time period from the time when the recording start instruction was issued.

In FIG. 2, in the time period indicated by a, the waveform of the electrocardiogram signal is recorded for a certain period of time until the recording start instruction is given. In the time period indicated by b, the waveform of the electrocardiogram signal for a certain period of time from the time when the recording start instruction is issued is recorded. C
In the time period indicated by , the ECG signal waveform for a certain period of time from the time when the recording start instruction was given, and the electrocardiogram signal for a certain period of time from the time when the recording start instruction was given. The waveform of the signal is recorded.

Therefore, if you set it to record in the time period indicated by C,
While watching the waveform of the electrocardiogram signal displayed on the display section 6, when a waveform desired to be recorded appears, an instruction to start recording can be given, and waveforms of time zones before and after that waveform can also be recorded.

Note that the time width of the recording time slots can be adjusted to any length for each recording time slot within the storage capacity of the storage unit.

〔Effect of the invention〕

As explained above, the present invention stores input electrocardiogram signals in digital quantities, so that when issuing an instruction to start recording, it is possible to specify a range of recording time including the time period before the start of recording. , it is now possible to record only the necessary waveforms while viewing the input waveform of the electrocardiogram signal on the display.
Moreover, it has the effect of saving recording paper.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an apparatus according to an embodiment of the present invention, FIG. 2 is an operation explanatory diagram showing the relationship between the timing of an electrocardiogram signal recording start instruction and the recording time period, and FIG. 3 is a conventional electrocardiogram recording method. FIG. 2 is a block diagram of an example of a device. 1...Amplification section, 2...A-D conversion section,
3...Storage unit, 4...Storage control unit, 5
, 15... Recording section, 6.16... Display section, 7, 17... Operation section, 8... Main control section, 19... ...control section. Agent Patent Attorney Susumu Uchihara $ 1 Kokufu 2 Figure

Claims (1)

[Claims] an amplification section that amplifies the electrocardiogram signal; an A-D conversion section that converts the electrocardiogram signal output from the amplification section from an analog quantity to a digital quantity; and the electrocardiogram signal converted to the digital quantity is sequentially stored and chronologically A storage unit that reads out old signals, a recording unit that records the electrocardiogram signal read from the storage unit, a display unit that displays the electrocardiogram signal output from the A-D conversion unit, and controls the entire device. a main control section that controls storage and readout operations of electrocardiogram signals in the storage section according to control signals sent from the main control section; and an operation section that sends instruction signals to the main control section. An electrocardiogram recording device comprising: