JP2018089005A - Electrocardiographic waveform display method and electrocardiographic waveform display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide electrocardiographic waveform display method and device that allow waveform check and waveform comparison on a screen to be performed easily.SOLUTION: There is provided an electrocardiographic waveform display method that allows waveform check and waveform comparison on a screen to be performed easily by extracting electrocardiographic waveforms (candidates 1-4) in a plurality of sections from collected electrocardiographic waveforms, displaying the extracted electrocardiographic waveforms in the plurality of sections, and collectively moving the electrocardiographic waveforms in the plurality of sections in a time direction equally on one screen according to an operation of a scroll bar S1.SELECTED DRAWING: Figure 19A

Description

  The present invention relates to an electrocardiogram waveform display method and an electrocardiogram waveform display apparatus.

  Conventionally, an electrocardiogram has been widely used as a diagnostic index for heart disease. An electrocardiogram is an electrocardiogram waveform which is detected by detecting the electrical activity of the heart on the body surface. By analyzing this electrocardiogram waveform (electrocardiogram), various information relating to the activity of the heart can be obtained.

  In recent years, it has become possible to automatically analyze an electrocardiogram using a computer by developing a digital electrocardiograph that records the electrocardiogram as data (see, for example, Patent Document 1).

  In such an electrocardiogram analyzer capable of automatic analysis of an electrocardiogram, an electrode is first attached to the subject, then the electrocardiogram analyzer collects the electrocardiogram waveform, and then the electrocardiogram waveform collected by the electrocardiogram analyzer automatically It comes to analyze.

  In this specification, temporarily storing an electrocardiogram waveform as an analysis candidate is referred to as “collection”, and recording the analyzed electrocardiogram waveform and analysis result is referred to as “recording”.

JP 2006-116207 A

  By the way, the collection time of the electrocardiogram waveform in the electrocardiograph can be set, for example, in 30 seconds to 10 minutes (in steps of 1 second). Here, when a long-time electrocardiographic waveform that does not fit in one screen is visually observed on the screen, the screen is scrolled or the screen is switched.

  However, if an electrocardiogram waveform collected over a long period of time such as 10 minutes is to be confirmed, it takes a considerable amount of time even if the screen is scrolled or the screen is switched. Also, for example, an electrocardiogram waveform at a distant time, such as an electrocardiogram waveform near the start of acquisition and an electrocardiogram waveform near the end of acquisition, will be displayed on the same screen if screen scrolling or screen switching is performed. Since it is not displayed, it is inconvenient when comparing these. For example, such inconvenience may occur when a long-time electrocardiographic waveform is collected as in a stress test.

  The present invention has been made in consideration of the above points, and provides an electrocardiographic waveform display method and an electrocardiographic waveform display apparatus that facilitate waveform confirmation and waveform comparison on a screen.

One aspect of the electrocardiographic waveform display method of the present invention is:
An ECG waveform extraction step for extracting a plurality of ECG waveforms from the collected ECG waveforms;
A display step of displaying the electrocardiograms of a plurality of sections extracted in the electrocardiogram waveform extraction step in one screen;
Including
In the electrocardiogram waveform extraction step, the extraction positions of the electrocardiogram waveforms of the plurality of sections are shifted equally in the time direction by an amount corresponding to a user operation.

One aspect of the electrocardiogram waveform display device of the present invention is:
An electrocardiogram waveform extraction unit for extracting an electrocardiogram waveform of a plurality of sections from the collected electrocardiogram waveform;
A display unit for displaying the electrocardiograms of a plurality of sections extracted by the electrocardiogram waveform extraction unit in one screen;
Have
The electrocardiogram waveform extraction unit shifts the extraction positions of the electrocardiogram waveforms of the plurality of sections equally in the time direction by an amount corresponding to a user operation.

  According to the present invention, an electrocardiographic waveform that is easy to check and compare waveforms on the screen by moving the electrocardiographic waveforms of a plurality of sections in one screen at a time in the time direction equally according to the user operation. Display can be realized.

The perspective view which shows the external appearance structure of the electrocardiograph of embodiment Block diagram showing the main components of the electrocardiograph The figure which shows the initial screen of 12 lead inspection Diagram showing the screen when collecting ECG waveforms Figure showing the candidate list screen Figure showing the analysis result screen The figure which shows the screen where the window for switching the screen pops up Figure showing the recording waveform screen The figure which shows the candidate list screen where the 12-lead ECG of 6 channels × 2 and the rhythm waveform of 1 channel are displayed in each candidate The figure which shows the candidate list screen where the 12-lead ECG of 6 channels × 2 was displayed in each candidate area The figure which shows the candidate list screen where the 12-lead ECG of 6 channels and the rhythm waveform of 1 channel were displayed in each candidate area | region The figure which shows the candidate list screen where the 12-lead ECG of 12 channels was displayed in each candidate area | region Diagram for explaining the method of extracting candidate sections excluding the noise section The figure which serves for explanation of the method of extracting the candidate section where the arrhythmia waveform is included The figure which shows the example which shifts a candidate section when there is a lack of waveform data or duplication of a candidate section The figure which serves for explanation of the extraction method of candidate sections when the number of locations where arrhythmia has occurred is less than the number of candidate sections to be extracted The figure which explains the extraction method of the candidate section when the collected waveform data is insufficient for the candidate section to be extracted The figure which explains the extraction method of the candidate section when the collected waveform data is insufficient for the candidate section to be extracted Figure showing a screen with a simple window displaying the analysis results Figure showing a screen with a simple window displaying the analysis results The figure which shows the example of the extraction position of the electrocardiogram waveform of each area when moving an electrocardiogram waveform collectively A figure used to explain batch movement of ECG waveforms A figure used to explain batch movement of ECG waveforms A figure used to explain batch movement of ECG waveforms A figure used to explain batch movement of ECG waveforms

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

<1> Overall Configuration FIG. 1 is a perspective view showing an external configuration of an electrocardiograph according to the present embodiment. The electrocardiograph 100 is composed of a main body part 110 and a display part 120. The main body unit 110 is provided with an input key 104 and a printer unit 105. The display unit 120 is provided with a touch panel 121.

  In the case of the present embodiment, the size of the touch panel 121 is 15 inches. The size of 15 inches is roughly equivalent to the A4 paper size. Thereby, in the electrocardiograph 100 of the present embodiment, an electrocardiographic waveform having the same layout and size as those recorded on A4 size paper can be viewed on the touch panel 121.

  FIG. 2 is a block diagram showing a main configuration of the electrocardiograph 100. As shown in FIG. The main unit 110 includes a calculation unit 101, a measurement unit 102, a storage unit 103, an input key 104, a printer unit 105, and a display / print control unit 106.

  The calculation unit 101 is configured by a CPU (Central Processing Unit) or the like, and executes an electrocardiogram data processing program to perform formation of an electrocardiogram waveform, analysis of the electrocardiogram waveform, and the like. In addition, the calculation unit 101 performs execution start, execution stop and execution condition (threshold value, etc.) setting of the electrocardiogram data processing program, control of various measurement devices such as the measurement unit 102, and control of various peripheral devices such as the touch panel 121 and the printer unit 105. Follow the input command.

  The measurement unit 102 is connected to an electrode unit worn by a subject (that is, an electrocardiogram measurement subject), performs an amplification process on the measurement voltage input from the electrode unit, and performs measurement after the process. The voltage is output to the calculation unit 101. Incidentally, the electrode unit for limbs and the electrode unit for chest are usually connected to the measurement unit 102, and a voltage necessary for obtaining a 12-lead electrocardiogram is input.

  The storage unit 103 is configured by a hard disk drive, a semiconductor memory, or the like. The storage unit 103 stores electrocardiographic waveform data obtained by the calculation unit 101 and analysis data thereof. The storage unit 103 also stores measurement data output from the measurement unit 102.

  Furthermore, setting data of the electrocardiograph 100 input by the user from the touch panel 121 or the input key 104 is also stored in the storage unit 103. The electrocardiograph 100 operates based on setting data stored in the storage unit 103.

  A menu screen and various setting screens are displayed on the touch panel 121, and the user can select a menu and perform various settings by touching the touch panel 121. The touch panel 121 displays an electrocardiogram waveform obtained by the calculation unit 101, an analysis result, and the like.

  The printer unit 105 is a laser type or thermal head type printer, and prints an electrocardiogram waveform obtained by the calculation unit 101, an analysis result, and the like according to an instruction from the user.

  The display / print control unit 106 controls the layout of the electrocardiographic waveform displayed on the screen of the touch panel 121 and printed on the recording paper by the printer unit 105. The display control of the electrocardiogram waveform and the analysis result in the present embodiment is mainly performed by the display / print control unit 106.

<2> Examination Flow and Screen Display During Examination Next, an electrocardiogram analysis examination when using the electrocardiograph 100 of the present embodiment and screen display in the electrocardiograph 100 will be described. In this embodiment, a case where a standard 12-lead test is performed as an electrocardiogram analysis test will be described. However, the present invention can also be used for an electrocardiogram analysis test other than the standard 12-lead test.

  When the electrocardiogram analysis test is started, first, an initial screen of a 12-lead test as shown in FIG. When electrodes are attached to the subject in this state, collection of an electrocardiogram waveform is started, and an electrocardiogram waveform as shown in FIG. Here, the collection time of the electrocardiogram waveform can be set, for example, in 30 seconds to 10 minutes (in increments of 1 second). This collection time becomes a waiting time until the collection is completed, and if you set a long collection time, you can collect a lot of ECG waveform data, so you can expect improvement in examination accuracy, but the waiting time also becomes long. The collection time is set while taking this into consideration.

  When the collection of waveforms is completed, the electrocardiograph 100 according to the present embodiment automatically extracts candidate waveforms, analyzes the waveforms, and displays the candidate waveforms. Specifically, since the collected waveform is stored in the storage unit 103, the waveform of a plurality of candidate sections suitable for the calculation unit 101 to perform analysis from the collected waveform is extracted, and the extracted plurality of waveforms are extracted. Analyze the waveform of the candidate section. The extracted waveforms of a plurality of candidate sections are displayed on the touch panel 121.

  In the present embodiment, the candidate section means an analysis unit section. In the present embodiment, the user can make various selections with this analysis unit section as a unit, and hence it is called a candidate section. Note that the waveform extraction processing of a plurality of candidate sections by the calculation unit 101 will be described in detail later.

  FIG. 5 shows an example of a candidate list screen displayed on the touch panel 121. In the example of FIG. 5, the waveform display area is divided into four, and four candidate sections of the first to fourth candidates are displayed. Specifically, the first candidate is displayed on the upper left, the second candidate is displayed on the upper right, the third candidate is displayed on the lower left, and the fourth candidate is displayed on the lower right.

  In this embodiment, since the electrocardiogram waveforms of a plurality of candidate sections are displayed on one screen, the user compares the plurality of candidate sections on one screen and records them from the plurality of candidate sections. It becomes possible to easily select the electrocardiogram waveform in the section to be.

  In the present embodiment, the arrangement order of the candidate interval waveforms from the first candidate to the fourth candidate is set in descending order of severity in the analysis findings. As a result, the user can see the waveforms in descending order of severity. By the way, if the severity is similar, arrange them in chronological order. However, the arrangement order is not limited to this. For example, the arrangement order may be in chronological order regardless of severity.

  In this candidate list screen, one of the candidate interval waveforms is surrounded by a selection frame W1. The display position of the selection frame W1 can be selected by the user touching any one of the display areas in which the candidate section waveforms of the first to fourth candidates are displayed with a finger. In the example of FIG. 5, the waveform display area of the first candidate is surrounded by the selection frame W1, but for example, when the waveform display area of the second candidate is touched, the waveform display area of the second candidate is the selection frame W1. Surrounded.

  In the description of the embodiment, when selecting on the display screen, the selection is made by touching with a finger. Of course, instead of touching, the pointer is moved to the touch position and the mouse is clicked. However, the same selection can be made.

  When the user touches the analysis result button B1 on the candidate list screen of FIG. 5, a waveform analysis result screen surrounded by the selection frame W1 is displayed. FIG. 6 shows an example of a transition destination analysis result screen. The analysis result screen includes a finding A1, a finding explanation A2, a measured value A3, and the like. When the user touches the “to candidate waveform” button B2 on the analysis result screen in FIG. 6, the candidate list screen in FIG. 5 is displayed again on the touch panel. As a result, the user can reselect candidate waveforms on the screen of FIG.

  When the user touches the “screen” button B3 on the analysis result screen of FIG. 6, as shown in FIG. 7, a screen in which a window W2 for switching the screen is displayed in a pop-up manner is displayed. Further, when the user touches the “record waveform” button B4 in the window W2, a record waveform screen is displayed as shown in FIG. This recording waveform screen is a screen that displays a waveform obtained by returning the waveform enclosed by the selection frame W1 in FIG. 5 to the original recording size.

  When the “Save” button B5 is touched on the analysis result screen of FIG. 6, the electrocardiograph 100 proceeds to a process of saving the analysis result and waveform data of the currently selected candidate section in the storage unit 103. . When the “thermal” button B 6 is touched, the electrocardiograph 100 proceeds to a process of printing the analysis result of the currently selected candidate section by the printer unit 105.

  When the user wants to end the current examination, the user may touch, for example, the “Return to examination” button B7 on the analysis result screen of FIG. 6 or the “Return” button B8 on the candidate list screen of FIG. . When such an operation is performed, the initial screen shown in FIG. 3 is displayed on the touch panel.

<3> Change Display Format of Candidate List Screen In the present embodiment, the display format of the electrocardiogram waveform on the candidate list screen can be changed. Specifically, the candidate list screen is sequentially changed as shown in FIGS. 9A to 9D according to the number of times the user touches the “screen selection” button B10 on the candidate list screen shown in FIG.

  In the candidate list screen of FIG. 9A, 6 channel × 2 12-lead electrocardiogram and 1 channel rhythm waveform are displayed in each candidate region (that is, one region that can be surrounded by the selection frame W1). More specifically, on the candidate list screen in FIG. 9A, an electrocardiographic waveform is displayed in a continuous method or a coherent method in each candidate region. In the continuous or coherent electrocardiogram, among the 12 lead electrocardiograms, the limb lead waveforms I, II, III, aVR, aVL, aVF are arranged on the left side, and the chest lead waveforms V1, V2, V3, V4, V5, and V6 are arranged on the right side. In the continuous method, among the 10-second electrocardiogram waveforms, the limb lead waveform of 0 to 5 seconds in the first half is displayed on the left side, and the chest lead waveform of 5 to 10 seconds in the latter half is displayed on the right side. ing. On the other hand, in the coherent method, the limb induction waveform of 0 to 5 seconds in the first half of the waveform for 10 seconds is displayed on the left side, and the chest induction waveform of 0 to 5 seconds in the first half is displayed on the right side. This continuous method and coherent method can display 12-lead waveforms in a single screen with a limited size so that the user can easily diagnose without reducing the amplitude of the waveform as much as possible. It is a display system that has a shape and is widely used in the past.

  In the candidate list screen of FIG. 9B, 6 channels × 2 12-lead electrocardiograms are displayed in each candidate area by the continuous method or the coherent method. The difference from FIG. 9A is that no rhythm waveform is displayed.

  In the candidate list screen of FIG. 9C, a 6-channel 12-lead electrocardiogram and a 1-channel rhythm waveform are displayed in each candidate area. More specifically, in the candidate list screen of FIG. 9C, the limb lead waveforms I, II, III, aVR, aVL, and aVF among the 12 lead electrocardiogram waveforms in each candidate region are displayed in the continuous method (or the coherent method). ) Without reducing the waveform of a part of the section, that is, all waveforms within a predetermined period (for example, 10 seconds) are displayed.

  In the candidate list screen of FIG. 9D, 12-channel electrocardiograms of 12 channels are displayed in each candidate area. More specifically, in the candidate list screen of FIG. 9D, among the 12 lead electrocardiogram waveforms, the limb lead waveforms I, II, III, aVR, aVL, aVF and the chest lead waveforms V1, V2, V3, V4, V5, and V6 are all arranged vertically by reducing the sensitivity (waveform amplitude) direction, and without reducing the waveform of some sections reduced by the continuous method (or coherent method), that is, within a predetermined period. All waveforms (for example, for 10 seconds) are displayed.

<4> Extraction of Candidate Section from Collected Waveform Next, the extraction method of the present embodiment for extracting the waveform of the candidate section from the collected waveform temporarily stored in the storage unit 103 will be described. Here, an example will be described in which the collection time is 60 seconds, one candidate section is 10 seconds, and four candidate sections are extracted. As described above, the collection time can be set in, for example, 30 seconds to 10 minutes (in increments of 1 second), the section length of the candidate section can also be set in, for example, 8 to 24 seconds, and candidates for list display and analysis are set. The number of sections is not limited to four.

  In the present embodiment, as an extraction method, a method of extracting by removing a noise interval and a method of extracting including an arrhythmia waveform are presented. Here, the operation unit 101 functions as a candidate waveform extraction unit that extracts the electrocardiogram waveforms of a plurality of candidate sections from the collected electrocardiogram waveforms.

<4-1> Method for Extracting by Excluding Noise Interval FIG. 10 is a diagram for explaining a method for extracting an electrocardiographic waveform in a candidate interval by excluding the noise interval. The uppermost waveform in the figure shows a collected waveform for 60 seconds temporarily stored in the storage unit 103. The second row shows a state where four candidate sections are formed by dividing the collected waveform every 10 seconds from the top, and the third row shows a candidate section extracted by excluding the noise section according to the present embodiment. FIG.

  As shown in the second row, in the example in which four candidate sections are formed by dividing every 10 seconds from the top, the second, third, and fourth candidate sections contain noise. As a result, when the electrocardiogram waveforms of the second, third, and fourth candidate sections are analyzed, the analysis results are greatly affected by noise, and it is impossible to obtain an analysis result in which the electrocardiogram waveform is correctly reflected. .

  Therefore, in the present embodiment, by extracting candidate sections excluding the noise section, it is possible to obtain an analysis result in which the influence of noise is small and the electrocardiographic waveform is correctly reflected in all candidate sections. It has become. Specifically, in the collected waveform stored in the storage unit 103 by the calculation unit 101, an interval in which an extreme high-frequency waveform appears with respect to an assumed electrocardiogram waveform (for example, AC, myoelectricity, drift is present). Detected as a noise interval in a section in which an extremely low frequency waveform appears (for example, a section in which noise due to electrode disconnection or poor contact occurs), and excludes this noise section as a candidate. Extract the ECG waveform of the interval. Note that the noise detection method is not limited to this, and in short, a waveform different from the assumed electrocardiographic waveform of the person may be detected as noise.

  In the example of FIG. 10, the electrocardiogram waveforms of the four candidate sections 1 to 4 indicated by shading are analyzed and analyzed as the ECG waveforms displayed on the candidate list screen (FIG. 5). Extracted as a target electrocardiogram.

<4-2> Method of Extracting Including Arrhythmia Waveform FIG. 11 is a diagram for explaining a method of extracting candidate sections including an arrhythmia waveform. As illustrated in FIG. 11, the calculation unit 101 detects a position where an arrhythmia has occurred, and the electrocardiographic waveforms of four candidate sections 1 to 4 indicated by shading centered on the position are displayed as candidates. Extracted as an electrocardiogram waveform displayed on the list screen (FIG. 5) and as an electrocardiogram waveform to be analyzed. As described above, by extracting candidate sections including the arrhythmia waveform as candidate sections to be displayed and analyzed, display and analysis suitable for an electrocardiogram examination can be performed.

  Here, the arrhythmia waveform is preferably arranged at the center of the candidate section. This is because if there are waveforms before and after the arrhythmia waveform, it is possible to confirm whether the arrhythmia suddenly occurred or there was a sign while looking at the waveforms before and after the arrhythmia waveform.

  As shown in FIG. 12, when the candidate section is extracted centering on the arrhythmia position, when the waveform data is insufficient (candidate 1 and candidate 4), the position of the candidate section is set in the direction in which the waveform data exists. If the candidate sections overlap each other (candidate 2 and candidate 3), extraction may be performed by shifting the position of any candidate section in a direction that does not overlap.

  Also, as shown in FIG. 13, when the number of locations where arrhythmia has occurred is smaller than the number of candidate sections to be extracted, the candidate section including the arrhythmia (candidate 2 in the figure) You may extract the area which adjoins temporally back and forth as a candidate area (in the figure, candidate 1 and candidate 3). Further, only three of candidates 1 to 3 extracted in this way may be displayed. As candidate 4, for example, an electrocardiographic waveform in a section of 0 to 10 seconds in which no arrhythmia has occurred is extracted and added. May be displayed.

<4-3> When Collected Waveform Data is Insufficient When the collected waveform data is insufficient with respect to the candidate section to be extracted, the candidate sections may be extracted so that the candidate sections overlap. Good. An example is shown in FIGS. In the example of FIGS. 14 and 15, the total time of the candidate sections to be extracted is 10 seconds × 4 = 40 seconds, but the length of the collected waveform is 35 seconds, so the collected waveform data is insufficient.

  Therefore, in the example of FIG. 14, candidate 4 is extracted so as to overlap candidate 3. In the example of FIG. 15, the candidates 1 to 4 are extracted so that all of the candidates 1 to 4 overlap by an equal length. In addition, when duplication is not permitted, only three candidates 1 to 3 may be extracted.

<4-4> Extraction Priority In practice, various situations are assumed when extracting a determined number of candidate sections from a collected waveform having a length determined by setting. For example, it is assumed that there are more arrhythmia waveforms in the collected waveform than the number of candidate sections. Therefore, here, the priority when extracting candidate sections will be described.

  In the present embodiment, for example, candidate sections are extracted with priorities in the order of (i) noise exclusion, (ii) duplication prohibition, and (iii) extraction centering on arrhythmia. In other words, if noise is present, a correct analysis result cannot be obtained, so noise exclusion is given the highest priority. In addition, when duplication occurs when extraction is performed centering on arrhythmia, priority is given to prohibiting duplication over extraction centering on arrhythmia. The example of FIG. 12 corresponds to this.

  Further, when there are more arrhythmias in the number of candidate sections than the number of candidate sections to be extracted in the collected waveform, it is preferable to extract in order from sections including arrhythmias with higher severity. For example, while the number of candidate sections to be extracted is four, six arrhythmias are included in the acquired waveform, and six arrhythmias have two severity (high), two severity (medium), In the case of two severity (low), it is preferable to preferentially extract candidate sections including four arrhythmias having four high severity, that is, two severity (high) and two severity (medium). Furthermore, when two arrhythmias of high severity (high) are of the same type, one of them is selected as a candidate interval depending on the priority other than the severity, and two severity (medium) and one severity (low) are added. Alternatively, four candidate sections may be extracted.

  Of course, which parameter is preferably given priority may vary depending on the medical site or the like, so that priority may be set.

  As described above, in the electrocardiograph 100 of the present embodiment, when the user touches the analysis result button B1 on the candidate list screen in FIG. 5, the waveform analysis result screen surrounded by the selection frame W1 is displayed. .

  In addition to this, in the electrocardiograph 100 of the present embodiment, the electrocardiogram waveform is displayed on the same screen as the screen displaying the electrocardiogram waveform in the state where the electrocardiogram waveform is displayed on the screen. The result can be displayed.

  16 and 17 show examples of the display. As shown in FIG. 16, when the user presses and holds the display area of the first candidate with a finger (that is, when the user keeps touching for a predetermined time or longer), the display area of the first candidate is surrounded by the selection frame W1 and the simple window W10. Is displayed, and the analysis result relating to the first candidate section waveform is displayed in the simplified window W10. The analysis result displayed in the simple window W10 is an analysis finding regarding the first candidate section waveform. In addition, what is displayed on the simple window W10 may be other analysis results such as a measurement value and a representative waveform. When the finger is released from the touch panel, the simple window W10 is closed.

  The analysis results displayed in the simple window W10 are in order of severity. Therefore, when the amount of analysis results is large, only the higher-order analysis results with higher severity are displayed in the simple window W10. Note that the user may be able to set which analysis result is displayed in the simple window W10.

  Here, the simple window W10 is preferably translucent. By doing in this way, even if the simple window W10 is displayed in the area surrounded by the selection frame W1, the electrocardiographic waveform at the position of the simple window W10 can be seen through. Further, the simple window W10 is not necessarily displayed in the selection frame W1.

  In addition, the method for displaying the simple window W10 is not limited to the case where the touch panel 121 is long-pressed. For example, the pointer is moved into one of the display areas of the first to fourth candidates, and the mouse button is pressed at that position. The simple window W10 may be displayed by clicking or double-clicking. In this case, the simple window W10 may be closed with the mouse.

  As in the embodiment, when the simple window W10 is opened by long-pressing the touch panel 121 with a finger and the simple window W10 is closed when the finger is released from the touch panel 121, the window can be displayed and hidden with one action. Therefore, there is an advantage that analysis results of a plurality of candidate sections can be viewed quickly.

  Similarly, as shown in FIG. 17, when the user long presses the second candidate display area with a finger, the second candidate display area is surrounded by the selection frame W1 and a simple window W10 is displayed. An analysis result regarding the second candidate section waveform is displayed in W10. For the third candidate and the fourth candidate, the simple analysis result can be displayed in the simple window W10 by the same operation.

  As described above, in the present embodiment, the analysis result can be confirmed without switching the screen by displaying the simple window W10 on which the analysis result related to the electrocardiogram waveform is displayed on the same screen as the electrocardiogram waveform. become able to. As a result, the test result can be confirmed with a small number of procedures, and the electrocardiographic waveform and the analysis result can be compared on the same screen.

  In addition to displaying the electrocardiogram waveforms of multiple candidate sections on one screen, the analysis results for the electrocardiographic waveforms of each candidate section are selectively displayed on the same screen as the screen on which the electrocardiographic waveforms of the multiple candidate sections are displayed. By making it possible to check analysis results while comparing recorded waveforms while displaying multiple recorded waveforms on one screen, you can check the inspection results with fewer steps. Will be able to.

  In the present embodiment, only the analysis result related to the electrocardiographic waveform of one candidate section selected by the user is displayed on the same screen among the electrocardiographic waveforms of the plurality of candidate sections displayed on the same screen. As described above, the analysis results regarding the electrocardiographic waveforms of two or more candidate sections selected by the user may be displayed on the same screen.

<6> Batch Movement of Electrocardiogram Waveforms As described above, the electrocardiogram waveforms of a plurality of candidate sections displayed on the candidate list screen are extracted by the calculation unit 101. As described above, the electrocardiographic waveform in this candidate section is a waveform in a section determined to be appropriate for analysis by the calculation unit 101.

  In the present embodiment, in addition to the mode for setting an appropriate candidate section for performing such an analysis, there is a waveform batch movement mode for extracting a section suitable for waveform confirmation and waveform comparison of an electrocardiogram waveform. . When the calculation unit 101 as an electrocardiogram waveform extraction unit is set to the waveform batch movement mode by a user operation, for example, candidates 1 to 4 as shown in FIG. 18 are extracted. In the example of FIG. 18, an electrocardiogram waveform having a length of 10 minutes is collected in the storage unit 103, and candidates 1 to 4 each having a section length of 10 seconds are extracted from the electrocardiogram waveform. Here, the intervals between the candidates 1 to 4 are equal to each other, which is 2.5 minutes in the example of FIG. That is, candidate 1 is an electrocardiogram waveform from 0 seconds to 10 seconds, candidate 2 is an electrocardiogram waveform from 2 minutes 30 seconds to 2 minutes 40 seconds, and candidate 3 is an electrocardiogram waveform from 5 minutes to 5 minutes 10 seconds. Candidate 4 is an electrocardiographic waveform from 7 minutes 30 seconds to 7 minutes 40 seconds. Strictly speaking, the head of adjacent sections of a plurality of sections is the time obtained by dividing the time length of the collected electrocardiogram waveform (10 minutes in the example in the figure) by the number of sections (4 in the example in the figure). (2.5 minutes in the case of the example in the figure).

  FIG. 19A shows a state in which the ECG waveforms of candidates 1 to 4 in FIG. When the scroll bar S1 is moved rightward from the state shown in FIG. 19A as shown in FIG. 19A → FIG. 19B → FIG. 19C → FIG. 19D, all the electrocardiographic waveforms of the first to fourth candidates are moved by the scroll bar S1. Move right according to the amount. Specifically, the calculation unit 101 or the display / printing control unit 106 shifts the extraction positions of the first to fourth candidate electrocardiogram waveforms in the direction indicated by the arrow in FIG. 18 according to the movement of the scroll bar S1. Of course, when the scroll bar S1 is moved in the left direction, all of the electrocardiographic waveforms of the first to fourth candidates move in the left direction according to the amount of movement of the scroll bar S1.

  As described above, in the present embodiment, the electrocardiographic waveforms of a plurality of sections (candidates 1 to 4) are extracted from the collected electrocardiogram waveforms, and the extracted electrocardiographic waveforms of the plurality of sections are displayed on one screen. By shifting the extraction position of the electrocardiogram waveform in the section equally in the time direction by an amount corresponding to the user operation, the electrocardiogram waveform in each candidate section can be moved in the time direction in a lump according to the user operation. It can be done.

  Thereby, compared with the case where the electrocardiogram waveform of each section is moved individually, the amount of movement in the substantial time direction with respect to the operation can be expanded, and the electrocardiogram that the user can see for the operation The shape can be increased. For example, in the example of FIGS. 19A to 19D, four electrocardiogram waveforms are moved in the time direction at a time, so that the electrocardiogram waveforms for the operation are compared with the case where each candidate electrocardiogram waveform is moved individually. The amount of movement in the time direction can be quadrupled.

  This is particularly effective when the collection time length is long. That is, if the collection time length is long, it takes time to visually confirm all the collected electrocardiogram waveforms. In such a case, as shown in this embodiment, the ECG waveform of a plurality of sections is displayed on one screen, and if it is moved in the time direction collectively according to one operation, it is collected. The time required to confirm all the electrocardiogram waveforms can be shortened.

  In the present embodiment, for example, even in an electrocardiogram collected over a long period of time such as 10 minutes, an electrocardiogram waveform near the start of collection and an electrocardiogram waveform near the end of collection, Even the electrocardiogram waveforms at different times can be displayed on the same screen, and the electrocardiogram waveforms can be confirmed while comparing them. As a result, even when the collected electrocardiogram waveform is a long time as in the stress test, the electrocardiogram waveform can be confirmed while comparing the electrocardiogram waveform near the start and near the end.

  Furthermore, in the processing of the present embodiment, when the extracted electrocardiogram waveforms of a plurality of sections are displayed on one screen, the extraction positions of the electrocardiogram waveforms of the plurality of sections are essentially the amount corresponding to the user operation. , To shift equally in the time direction. Such processing is effective in addition to the long-term electrocardiographic waveform confirmation and waveform comparison as in the embodiment.

  For example, by extracting sections that contain the same type of arrhythmia waveform as the collected multiple sections and displaying them side by side in the vertical direction of the screen so that the centers of the arrhythmia coincide vertically, a plurality of the same that differ in time Various types of arrhythmia waveforms are displayed in the vertical direction, and they are collectively moved and displayed in the time direction in response to a user operation. As a result, the user can see a plurality of changes in the arrhythmia on the screen while comparing them.

  As described above, the batch movement processing of the electrocardiographic waveform according to the present embodiment is widely effective in confirming the changes in the time direction of the electrocardiographic waveforms at different points in time while comparing with each other.

<7> Summary As described above, according to the present embodiment, a plurality of electrocardiographic waveforms (candidates 1 to 4) are extracted from the collected electrocardiographic waveforms, and the extracted electrocardiographic waveforms of the plurality of sections are obtained. By displaying the electrocardiogram waveform extraction positions in a plurality of sections on the same screen in the time direction by the amount corresponding to the user operation, the electrocardiogram waveforms in the plurality of sections in a single screen are collectively displayed according to the user operation. As a result, it is possible to realize an electrocardiographic waveform display that facilitates waveform confirmation and waveform comparison on the screen.

  In the above-described embodiment, the case where the positions of the electrocardiographic waveforms in a plurality of sections are shifted in accordance with the operation of the scroll bar S1 is described. However, the present invention is not limited to this. When the display area is swiped with a finger, the electrocardiographic waveforms of each candidate section may be collectively shifted in the time direction according to the swipe amount.

  The above-described embodiments are merely examples of implementation in carrying out the present invention, and the technical scope of the present invention should not be construed as being limited thereto. That is, the present invention can be implemented in various forms without departing from the gist or main features thereof.

  The present invention can be applied to an electrocardiograph having a function of automatically analyzing an electrocardiogram, for example.

DESCRIPTION OF SYMBOLS 100 ECG 101 Calculation part 102 Measurement part 103 Storage part 104 Input key 105 Printer part 106 Display / printing control part 110 Main body part 120 Display part 121 Touch panel A1 Findings A2 Findings A3 Measured value W1 Selection frame W10 Simple window

Claims (6)

An ECG waveform extraction step for extracting a plurality of ECG waveforms from the collected ECG waveforms;
A display step of displaying the electrocardiograms of a plurality of sections extracted in the electrocardiogram waveform extraction step in one screen;
Including
The ECG waveform extraction step shifts the extraction positions of the ECG waveforms of the plurality of sections equally in the time direction by an amount corresponding to a user operation.
ECG waveform display method. The beginning of the adjacent sections of the plurality of sections is separated by a time obtained by dividing the time length of the collected electrocardiogram waveform by the number of sections.
The electrocardiographic waveform display method according to claim 1. In the electrocardiogram waveform extraction step, as the plurality of sections, each section including an arrhythmia waveform is extracted.
The electrocardiographic waveform display method according to claim 1. An electrocardiogram waveform extraction unit for extracting an electrocardiogram waveform of a plurality of sections from the collected electrocardiogram waveform;
A display unit for displaying the electrocardiograms of a plurality of sections extracted by the electrocardiogram waveform extraction unit in one screen;
Have
The electrocardiogram waveform extraction unit shifts the extraction positions of the electrocardiogram waveforms of the plurality of sections equally in the time direction by an amount corresponding to a user operation.
ECG waveform display device. The electrocardiogram waveform extraction unit extracts the electrocardiogram waveforms of the plurality of sections so that the heads of the adjacent sections of the plurality of sections are separated by a time obtained by dividing the time length of the collected electrocardiogram waveform by the number of sections. To
The electrocardiogram waveform display device according to claim 4. The electrocardiogram waveform extraction unit extracts sections each including an arrhythmia waveform as the plurality of sections,
The electrocardiogram waveform display device according to claim 4.