JP6914079B2 - Electrocardiograph and its control method - Google Patents

Description

The present invention relates to an electrocardiograph and a control method thereof, and more particularly to an electrocardiograph including a touch display and a control method thereof.

An electrocardiograph having a function of confirming an electrocardiogram or a report on a screen is desired to have a display unit having a screen as large as possible in order to improve visibility. However, increasing the screen reduces the space for arranging switches and buttons. In order to alleviate this problem, a configuration is known in which a part of the screen of the touch display is used as a software key area (Patent Document 1).

Japanese Patent No. 4949685 (Fig. 3)

The combination of the touch display and software keys allows virtually any number of keys and switches to be provided on the electrocardiograph without using housing space. However, there is a limit to the number of software keys that can be placed on the screen. This is because the software keys need to have a certain size, and if the number is large, the display area of the electrocardiogram will be compressed.

One of the reasons why a software key needs to have a certain size is to ensure the visibility of the text indicating the function. In particular, non-Kanji languages have more characters than Kanji, which is a particular problem for products that support multiple languages. Another reason is that a certain size is required to ensure that the software key intended by the user can be touch-operated. Against this background, especially with small electrocardiographs, only 3-4 software keys can be placed on the screen. To address this issue, some electrocardiographs have the ability to switch the set of software keys displayed on the screen each time the switch key is operated.

However, if switching is required many times before a key having a desired function is displayed, the operability is deteriorated. Therefore, it is desirable that the keys to which frequently used functions are assigned can be used with a small number of switching times, but which function is frequently used depends on the electrocardiograph usage environment and user, so all usage environments and users. It is difficult to achieve an array of keys that satisfies.

The present invention has been made in view of such problems of the prior art, and an object of the present invention is to realize an electrocardiograph in which a user can change the function assigned to a software key and a control method thereof.

The above-mentioned purpose is an electrocardiograph that uses a part of the display screen of the touch display as a function key area for displaying function keys, and functions can be dynamically assigned to the function keys. Displays the assigned function, the electrocardiograph executes the function assigned to the function key when the function key is operated, and the electrocardiograph changes the function assigned to the function key by the user. and displays a setting screen for, and a control means for assigning functions to the function keys in accordance with an operation performed on the setting screen, the setting screen for each of the plurality of measurement modes with the electrocardiograph, the at least first function key Achieved by an electrocardiograph characterized in that the assigned function can be set.

With such a configuration, according to the present invention, it is possible to realize an electrocardiograph in which the function assigned to the software key by the user can be changed and a control method thereof.

It is a block diagram which shows the functional structure example of the electrocardiograph which concerns on embodiment of this invention. It is a figure which shows the screen example of the electrocardiograph which concerns on embodiment. It is a flowchart about the function key setting operation of the electrocardiograph which concerns on embodiment. It is a figure which shows the screen example of the electrocardiograph which concerns on embodiment. It is a figure which shows the screen example of the electrocardiograph which concerns on embodiment.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the drawings.
(Electrocardiograph configuration)
FIG. 1 is a block diagram showing a configuration example of an electrocardiograph 100 according to an embodiment of the present invention.
The electrode group 110 includes, for example, limb electrodes (4) and chest electrodes (6). The type and number of electrodes included in the electrode group 110 are determined by the type and number of electrocardiogram signals (inductions) measured by the electrocardiograph 100.

The electrode group 110 (electrocardiogram electrode) is connected to a connector included in the input unit 111 of the electrocardiograph 100. The input unit 111 has, for example, a protection circuit, an induction selector, an amplifier circuit, and the like, and outputs a preset type and number of electrocardiogram signals.
The A / D conversion unit 112 digitizes each of the electrocardiogram signals output from the input unit 111 and outputs them as electrocardiogram waveform data. The input unit 111 and the A / D conversion unit 112 are also called an analog front end (AFE).

The filter processing unit 113 applies a noise removal filter to the electrocardiogram waveform data input through the A / D conversion unit 112 according to the settings from the control unit 120. In the present embodiment, it is assumed that the filter processing unit 113 can selectively apply the myoelectric noise removal filter, the AC noise removal filter, and the drift noise removal filter as an example, but the type and number of filter processing are different. Not limited to these.
The speaker 114 is used by the control unit 120 to output, for example, a warning sound or a voice message.

The control unit 120 includes, for example, a ROM, a RAM, and a programmable processor, and controls the operation of the entire electrocardiograph 100 by expanding the control program stored in the ROM into the RAM and executing the programmable processor. In addition to the control program, various setting values and GUI data are stored in the ROM, which is appropriately used when the control program is executed. Also, at least a part of the ROM may be rewritable.

For example, the filter processing unit 113 may be realized by the programmable processor included in the control unit 120 executing the program, or may be realized by hardware such as ASIC or ASSP. The filter processing unit 113 may be realized by a combination of hardware and software.

The analysis unit 1201 corresponds to the automatic analysis function of the electrocardiogram waveform data realized by the control unit 120, and applies the automatic analysis process to the measured electrocardiogram waveform data. The automatic analysis process can be roughly divided into two types: measurement process and finding classification process. The measurement process is a process of detecting a division point (P, QRS, T) of an electrocardiogram and obtaining a measured value (RR interval, ST level, PQ, QRS width, QT, etc.). Further, the finding classification process is a process of determining a finding from a measured value and a determination condition determined in advance. The measured values given here are merely examples, and other measured values may be obtained.

A memory card can be attached to and detached from the card slot 116, and the control unit 120 can record the electrocardiogram test data on the mounted memory card and read the recorded electrocardiogram test data from the mounted memory card. .. The electrocardiogram examination data includes electrocardiogram waveform data and subject information data. When the electrocardiogram waveform data is automatically analyzed, the examination data includes the data of the automatic analysis result. ECG test data is generated for each test in a predetermined data format. The electrocardiogram examination data may be composed of a plurality of data files or may be composed of one data file.

The operation unit 117 is an input device in which a user (medical personnel) inputs various settings and instructions to the electrocardiograph 100, and buttons, keys, a touch panel (software key), and the like are generally used, but the operation unit 117 is not limited thereto. .. Input methods that do not require physical input operations, such as voice input, may be supported.

The display unit 118 is a display device such as an LCD, and is an electrocardiogram and / or an analysis report based on the electrocardiogram being measured or the electrocardiogram examination data stored in the memory card installed in the card slot 116 under the control of the control unit 120. Or display the menu screen. In this embodiment, the display unit 118 is a touch display.
The printer 119 is, for example, a thermal printer, and prints out an electrocardiogram waveform and an analysis report in a predetermined format under the control of the control unit 120.

The power supply unit 121 is, for example, a secondary battery or a commercial power source (AC adapter), and supplies electric power to each unit of the electrocardiograph 100.

The external I / F 123 is a general-purpose interface for connecting an external device by wire. In the present embodiment, the external I / F 123 is assumed to be an interface compliant with the USB 2.0 standard, but may be a general-purpose interface compliant with other standards. Further, the number of external I / F 123s may be two or more. Any external device 200 (for example, a USB memory or a personal computer) that can be connected via USB can be connected to the external I / F 123.

When measuring and recording an electrocardiogram signal using an electrocardiograph 100 having such a configuration, for example, when the electrocardiograph 100 is turned on, the electrode group 110 is located at a predetermined position on the body surface of the subject. An electrode pad or an electrode clip provided at one end of the electrode group 110 is attached, and a connector provided at the other end of the electrode group 110 is connected to the input unit 111.

When the electrode group 110 is connected to the input unit 111, the detected electrocardiogram signal is input to the input unit 111, and is processed by the A / D conversion unit 112, the filter processing unit 113, and the like to the control unit 120 as electrocardiogram waveform data. Entered. The control unit 120 uses a part of the internal RAM as a buffer, and temporarily stores the electrocardiogram waveform data for the latest predetermined number of seconds. Further, the control unit 120 starts displaying the electrocardiogram on the display unit 118 by using the electrocardiogram waveform data in the buffer.

The electrocardiograph of the present embodiment has the following plurality of measurement modes.
(1) 12-lead automatic measurement mode For the 12-lead ECG signal measured in a predetermined period (for example, 10 seconds) from the time of inputting the recording start instruction, the electrocardiogram examination data including the automatic analysis result is recorded and displayed. Output to unit 118 and / or printer 119.
(2) 12-lead manual measurement mode From the input of the recording start instruction to the input of the recording stop instruction, the electrocardiogram waveform of a part of the 12 leads specified is output from the printer 119 in real time.
(3) Arrhythmia measurement mode For the specified 3 types of leads out of 12 leads, the electrocardiogram waveform of the leads measured in a predetermined period (for example, several minutes) after the recording start instruction is input is printed in real time. Output from 119.
(4) Rhythm measurement mode For one of the 12 leads specified, the electrocardiogram waveform of the lead measured in a predetermined period (for example, several minutes) after the recording start instruction is input is printed in real time. Output from 119.
It should be noted that these measurement modes and operations are merely examples, and it is not necessary to have all of these measurement modes, and other measurement modes and operations are also possible.

When the recording start instruction is input from the operation unit 117, the control unit 120 executes the recording operation according to the set measurement mode, and the set recording time elapses or the recording end instruction from the operation unit 117. When the input is detected, the recording operation ends.

When executing the automatic analysis process, the control unit 120 (analysis unit 1201) executes the automatic analysis process on the electrocardiogram waveform data for the recording period stored in the buffer. The control unit 120 generates test data including electrocardiogram waveform data, automatic analysis result data, and subject information data, and is connected to a memory card installed in the card slot 116 or an external I / F 123. Record on device 200.

The format of the inspection data is not limited, and may be composed of a plurality of data files or one data file. For example, when the data file including the subject information and the electrocardiogram waveform data and the data of the automatic analysis result are generated as separate data files, a plurality of data files related to the same test are recorded so that they can be discriminated. For example, each data file can be recorded in the same folder, or the same file name can be recorded with a different extension. When the test data is composed of one data file, a data file including the electrocardiogram waveform data, the data of the automatic analysis result thereof, and the data of the subject information is generated. These are merely examples, and inspection data may be generated by other methods.

In the 12-lead automatic measurement mode, when the automatic analysis process is completed, the control unit 120 outputs the electrocardiogram waveform stored in the buffer and the automatic analysis result to the display unit 118 and / or the printer 119 in a predetermined format. ..

(Software key customization process)
Next, with reference to FIGS. 2 to 5, the viewing process of the electrocardiogram data and the automatic analysis result in the present embodiment will be described.
The process shown in the flowchart of FIG. 3 is realized by the control unit 120 executing the control program stored in the ROM.

FIG. 2A is a diagram showing an example of a screen (inspection screen 200) of the electrocardiograph 100 during recording standby and measurement. Here, it is assumed that the subject is equipped with electrodes and is in a state of waiting for input of a recording start instruction (during recording standby).

The examination screen 200 has a heading area 201, an electrocardiogram area 202, and a function key area 203.
In the heading area 201, the subject information, the type of inspection, the type of the filter applied by the filter processing unit 113, and the like are displayed, and the menu button 204 is arranged. The number and types of information displayed in the heading area 201 are merely examples. The "button" and "key" in the display screen are software keys, and in the present embodiment, a predetermined touch operation (for example, tap operation) to the image area of the button or key displayed on the screen is performed. It is assumed that the control unit 120 is configured to recognize the operation of the or key. Therefore, the "operation" for the "key" or "button" in the following description means a predetermined touch operation for the image area of the "key" or "button". However, the operation of the software key is not limited to the touch operation. For example, the operation of a hardware key or a button may be configured to be recognized as an operation of an associated software key.

In the electrocardiogram area 202, the electrocardiogram waveform being measured is displayed in a predetermined format in real time. The number and types of electrocardiogram waveforms displayed differ depending on the set measurement mode. FIG. 2A shows a display example in the 12-lead automatic measurement mode.

In the function key area 203, a software key for a user to give an instruction to the electrocardiograph 100 is arranged. Here, four function keys F1 to F4 and a page feed key 205 for instructing switching of the function keys displayed in the function key area 203 are arranged. In the present embodiment, the function keys whose functions can be customized are so-called shortcut keys, and the menu items assigned to the function keys can be directly called without following a plurality of layers of the menu. The functions assigned to the function keys F1 to F4 are not limited to the functions for calling a specific menu item. For example, a function of giving a transition instruction to the previous screen to the electrocardiograph 100 may be fixedly (non-customizable) assigned.

The functions of the function keys F1 to F4 displayed in the function key area 203 are switched in the direction of increasing the number of pages, for example, each time the page feed key 205 is operated (the next page after the last page returns to the first page). .. The display "1/3" of the page feed key 205 indicates that the function keys F1 to F4 of 3 pages (3 sets) in total can be switched, and that the currently displayed page is the 1st page. There is. Therefore, 12 function keys can be used from the inspection screen 200. The total number of function keys that can be used may differ depending on the display screen.

When the menu button 204 is operated, the control unit 120 causes the display unit 118 to display the menu screen 220 as shown in FIG. 2B.
Then, when the "function setting" button 221 included in the menu screen 220 is operated, the control unit 120 causes the display unit 118 to display the setting list screen 240 shown in FIG. 2C. When the "function key" button 241 is operated on the setting list screen 240, the control unit 120 starts the operation of the function key setting process shown in the flowchart of FIG.

In S301, the control unit 120 causes the display unit 118 to display the function assignment list screen 400 of the function keys as shown in FIG. 4A as a setting screen for the user to change the function assigned to the function keys. For convenience, in the present embodiment, the target of the function key setting is limited to the function key on the inspection screen 200, so that the function assignment list screen 400 displays a list of the settings related to the function key on the inspection screen 200. However, it may be possible to set the function keys on other screens. In this case, if the user is allowed to specify the screen for setting the function keys and the function assignment list screen corresponding to the specified screen is displayed. good.

As described above, since the electrocardiograph 100 has four measurement modes, the function assigned to the function key on the examination screen 200 can be set independently for each measurement mode. In other words, different functions can be assigned to one function key for each measurement mode. Then, in S301, the control unit 120 displays the function assignment list screen 400 of the function keys for the 12-lead automatic measurement mode, which is considered to be the most frequently used of the four measurement modes. When the control unit 120 detects a measurement mode change operation (an operation of selecting one of the tabs 402 to 408 corresponding to the measurement mode) (S303, Y), the control unit 120 switches the display tab and assigns a function for another measurement mode. Display the list screen (S305).

In the key selection area 410 of the function assignment list screen 400, the functions assigned to each of the function keys F1 to F4 are combined (page) displayed in the function key area 203 and the displayed positions (F1 to F4). ) And the list is displayed in a selectable manner.

When the operation of selecting any key is detected in the key selection area 410 (S307, Y), the control unit 120 displays a list of functions that can be assigned to the selected key in a selectable function selection screen 422. Is displayed as a child screen, for example (S309). For example, in the key selection area 410 of FIG. 4A, when the selection operation of the function key 411 displayed as F2 on the second page is detected, the control unit 120 displays the function selection screen 422 shown in FIG. 4B. Display it. In S309, the control unit 120 displays a function selection screen corresponding to the tab selected at the time when the key selection operation is detected, that is, a function selection screen according to the measurement mode. Therefore, the function selection screen 422 in FIG. 4B is a function selection screen for the 12-lead automatic measurement mode corresponding to the tab 402. The measurement mode and the assignable function options are stored in association with, for example, the ROM in the control unit 120.

On the function selection screen 422, a list of assignable functions is displayed so that the currently assigned function can be discriminated. Here, as an example, among the radio buttons displayed in association with the functions, the currently assigned function can be determined by selecting the radio button 426 corresponding to the currently assigned function. In this example, since there is no function assigned to the function key 411 displayed as the function key F2 on the second page, it is displayed as if "None" is assigned.

When, for example, an operation to a position corresponding to a function name on the function selection screen 422 or a radio button selection operation is detected, the control unit 120 changes the radio button corresponding to the function to the selected state and selects until then. The radio button that was in the state is deselected. In this way, only one option can be selected on the function selection screen 422. The function selection screen 422 is provided with a close button 428 and a decision button 424. The operation of the decision button 424 is a function decision operation. When the control unit 120 detects the function determination operation (S311 and Y), the control unit 120 assigns the function in the selected state on the function selection screen 422 at that time to the key selected on the function assignment list screen 400 (S313), and then performs the function. The selection screen 422 is closed (S317).

On the other hand, when the control unit 120 detects the operation of the close button 428 (S315, Y), the control unit 120 closes the function selection screen 422 without changing the setting (S317).

As described above, in the present embodiment, different functions can be assigned to one function key for each measurement mode, but further, the options of the functions that can be assigned for each measurement mode can be different. FIG. 4C shows an example of the function selection screen 442 displayed in response to the selection of the function key displayed as the function key F2 on the second page with the tab 404 selected. Since the tab 404 is selected, the function selection screen 442 lists the functions that can be assigned to the function keys for the 12-lead manual measurement mode.

As can be seen from the comparison between FIGS. 4B and 4C, "with / without report" 427 is in 12-lead automatic measurement mode only, and "recording speed" and "number of channels" 444 are in 12-lead manual measurement mode. Only can be assigned to function keys. Note that these differences are examples, and there are no particular restrictions on the options specific to the measurement mode.

FIG. 5A shows a state in which tab 406 is selected in FIG. 4A, and lists the functions currently assigned to the function keys for the arrhythmia measurement mode.
Further, FIGS. 5 (b) and 5 (c) show examples of function selection screens 522 and 524 displayed for the arrhythmia measurement mode and the rhythm measurement mode, respectively. In the example shown here, the functions that can be assigned to the function keys are the same for the arrhythmia measurement mode and the rhythm measurement mode, but they may be different.

When the function assignment list screen 400 detects a transition operation from the function assignment list screen 400 to another screen, such as an operation of the "back" key (S319, Y), the control unit 120 ends the function key setting process.

As described above, according to the present embodiment, in the electrocardiograph having a touch display, the function assigned to the software key by the user is provided by providing the setting screen for the user to change the function assigned to the software key. It can be changed. Further, since different functions can be assigned to one software key for each measurement mode of the electrocardiogram, it is possible to assign a desired function according to the measurement mode, and the convenience of the user is improved. For example, the purpose of measurement is often different between the automatic measurement mode and the manual measurement mode, and therefore the functions that the user wants to use are often different. Therefore, the effect of being able to assign a separate function to the software key for each measurement mode is great.

The electrocardiograph according to the present invention can also be realized as a program (application software) for causing a general-purpose information processing device such as a personal computer, a tablet terminal, or a smartphone capable of processing an electrocardiogram signal to execute the above-mentioned operations. .. Therefore, such a program and a recording medium (an optical recording medium such as a CD-ROM or DVD-ROM, a magnetic recording medium such as a magnetic disk, a semiconductor memory card, etc.) in which the program is stored also constitute the present invention. ..

100 ... electrocardiograph, 118 ... display unit, 120 ... control unit, 123 ... external I / F, 1201 ... analysis unit

Claims (10)

An electrocardiograph that uses a part of the display screen of the touch display as a function key area for displaying function keys.
Functions can be dynamically assigned to the function keys, the assigned functions are displayed on the function keys, and the electrocardiograph is assigned to the function keys when the function keys are operated. Perform the function that is
The electrocardiograph has a control means for displaying a setting screen for a user to change a function assigned to the function key and assigning a function to the function key in response to an operation on the setting screen.
On the setting screen, it is possible to set the function assigned to the function key at least first for each of the plurality of measurement modes of the electrocardiograph.
An electrocardiograph characterized by that. On the setting screen, one of the plurality of measurement modes and one of the plurality of function keys can be selected.
The control means
When one of the plurality of measurement modes and one of the plurality of function keys are selected, a function selection screen for displaying a plurality of predetermined functions that can be assigned to the selected function keys is displayed.
The function selected on the function selection screen is assigned as the function of the selected function key.
The electrocardiograph according to claim 1. The electrocardiograph according to claim 2, wherein the plurality of predetermined functions are separately defined for each of the plurality of measurement modes. The electrocardiograph according to claim 2 or 3, wherein no function can be selected on the function selection screen regardless of which of the plurality of measurement modes is selected. When one of the plurality of measurement modes is selected on the setting screen, the control means displays a list of functions assigned to each of the plurality of function keys for the selected measurement mode. The electrocardiograph according to any one of claims 2 to 4. The electrocardiograph according to claim 5, wherein the control means displays the function selection screen for the corresponding function key when one of the listed functions is selected. The control means
A plurality of function keys and a switching key are displayed in the function key area.
Each time the switching key is operated, a plurality of function keys displayed in the function key area are switched.
The electrocardiograph according to any one of claims 1 to 6, wherein the electrocardiograph is characterized in that. When one of the plurality of measurement modes is selected on the setting screen, the control means displays in the function key area the functions assigned to each of the plurality of function keys for the selected measurement mode. The electrocardiograph according to claim 7, wherein the electrocardiograph is displayed in a selectable list in correspondence with the combination of the above and the position displayed in the function key area. A control method for an electrocardiograph that uses a part of the display screen of a touch display as a function key area for displaying function keys.
Functions can be dynamically assigned to the function keys, the assigned functions are displayed on the function keys, and the electrocardiograph is assigned to the function keys when the function keys are operated. Perform the function that is
A display step of displaying a setting screen for the user to change the functions assigned to the function keys,
It has a setting process of assigning a function to the function key according to an operation on the setting screen.
In the setting screen, for each of the plurality of measurement modes where the electrocardiograph has, it is possible to set the functions assigned to at least initially the function keys,
An electrocardiograph control method characterized by this. A program for causing a computer included in an electrocardiograph to function as the control means included in the electrocardiograph according to any one of claims 1 to 8.

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