JP2008279127A - Pulsation fluctuation measuring apparatus and its information processing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pulsation fluctuation measuring apparatus capable of displaying the fluctuation of pulsation in real time, easing the tension of autonomic nerves of a person to be measured and guiding the person to be measured to the state where sympathetic nerves and parasympathetic nerves are well-balanced. <P>SOLUTION: The pulsation fluctuation measuring apparatus comprises a display part 310 for displaying the rhythm of respiration to the person to be measured, an extraction part for detecting the biological signals of the person to be measured and extracting a pulsation interval, a display part 301 for displaying an analyzed result obtained by time domain analysis for obtaining the fluctuation of the pulsation on the basis of the pulsation interval extracted by the extraction part, and a recording part for recording the analyzed result. At least, the extraction part can detect the biological signals of the person to be measured and extract the pulsation interval in parallel with the display of the respiratory rhythm by the display part 310. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a technique for visualizing fluctuations in pulsation based on biological signals such as an electrocardiogram waveform and a heartbeat.

  Conventionally, the Lorentz plot is known as a method for evaluating the enhanced state of sympathetic nerves and parasympathetic nerves. In general, it is important that the sympathetic nerve and the parasympathetic nerve are balanced. When the autonomic nerve is tense and the balance between the sympathetic nerve and the parasympathetic nerve is disturbed, fluctuations in pulsation are affected.

  The Lorentz plot is a well-known technique that visualizes fluctuations in pulsation based on biological signals such as an electrocardiogram waveform and a heartbeat.

  12 and 13 are diagrams showing a method of generating a Lorentz plot based on an electrocardiographic waveform. When an electrocardiogram waveform as indicated by 1201 in FIG. 12 is collected, the position of the R wave is first identified, and the RR interval is calculated. The R wave refers to the peak portion of the electrocardiogram waveform, and the RR interval refers to the pulsation interval of the nth beat (n is an arbitrary integer) and the (n + 1) th beat of the R wave. In the example of FIG. 12, the R wave positions are identified as R1, R2, R3, and R4, respectively, and the RR intervals are calculated as T21, T32, and T43, respectively.

  Then, based on the calculated RR interval, T21 is plotted on the horizontal axis and T32 is plotted on the vertical axis in the two-dimensional graph region shown in FIG. Next, T32 is plotted on the horizontal axis and T43 is plotted on the vertical axis. A Lorentz plot is generated by sequentially performing such processing on successive RR intervals. FIG. 14 is a diagram showing an example of the generated Lorentz plot, in which (a) generally shows a good balanced state, and (b) and (c) show a non-balanced state. ((B) shows a stress / disease pattern, and (c) shows an arrhythmia pattern).

As a technique applying the Lorentz plot generated by such a method, the present applicant has made several proposals so far. For example, Patent Documents 1 and 2 below propose a real-time pulsation monitor that allows the subject to grasp pulsation fluctuations on the spot by displaying the Lorentz plot in real time in parallel with the measurement of the electrocardiogram waveform. is doing.
Japanese Patent Laid-Open No. 2001-212095 Japanese Patent Laid-Open No. 2001-212089

  However, even when the fluctuation of pulsation is displayed to the subject and the fluctuation of the pulsation is not good (that is, the autonomic nerve is tense and the balance between sympathetic and parasympathetic nerves is disturbed) In many cases, the person to be measured does not know how to improve the condition.

  The present invention has been made in view of the above problems, and displays fluctuations of pulsation in real time, relaxes the tension of the subject's autonomic nerve, and balances the subject with the sympathetic nerve and the parasympathetic nerve. An object of the present invention is to provide a pulsation fluctuation measuring apparatus capable of leading to a state in which the pulsation is removed.

In order to achieve the above object, a pulsation fluctuation measuring apparatus according to the present invention has the following configuration. That is,
First display means for displaying a breathing rhythm to the subject;
An extraction means for detecting a biological signal of the measurement subject and extracting a beat interval;
Second display means for displaying an analysis result obtained by a time domain analysis for obtaining fluctuation of pulsation based on the pulsation interval extracted by the extraction means;
Recording means for recording the analysis result,
At least the extraction means can detect the measurement subject's biological signal and extract the pulsation interval in parallel with the respiratory rhythm being displayed by the first display means. To do.

  While displaying fluctuations of pulsation in real time, it is possible to relieve the tension of the subject's autonomic nerve and lead the subject to a balanced state between the sympathetic nerve and the parasympathetic nerve.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings as necessary. Note that the pulsation fluctuation measuring device in each of the following embodiments is optimal for reducing the tension of the subject's autonomic nerve and leading the subject to a balanced state of the sympathetic nerve and the parasympathetic nerve. A breathing rhythm based on a breathing method is displayed. This is because recent research has revealed that the optimal breathing method is effective in reducing the tension of the autonomic nerve.

  Furthermore, the pulsation fluctuation measuring device in each of the following embodiments is characterized by displaying the fluctuation state of the pulsation of the measurement subject during breathing in parallel with the display of the respiratory rhythm based on the optimal breathing method. To do. This is because the measurement subject can confirm the effect of the relaxation of autonomic nerve tension by the optimum breathing method in real time.

  In other words, according to the pulsation fluctuation measuring device in each of the following embodiments, the effect of the relaxation of the autonomic nerve by the optimal breathing method is visualized, so that the measurement subject can breathe while confirming this It becomes. As a result, the measurement subject can be led to a state in which the sympathetic nerve and the parasympathetic nerve are balanced.

The pulsation fluctuation measuring device described in each of the following embodiments will be described as a device that displays a Lorentz plot, which is one of the geometric figure analysis methods of time domain analysis, but the present invention is described below. It is not limited to the embodiment. For example, as another pulsation fluctuation index, a triangle index which is one of geometric figure analysis methods for time domain analysis, SDNN, SDANN, r-MSSD, RR50 (NN50), pNN50 (time / domain analysis) (φ ₀ NN50), CVRR, etc. may be displayed.

[First Embodiment]
1. Appearance Configuration FIG. 1 of the apparatus is a diagram showing an external configuration of a first embodiment beat fluctuation measuring device 100 according to the embodiment of the present invention. In the figure, reference numeral 101 denotes a housing which covers an internal electronic device and forms the outer shape of the apparatus. On both side surfaces of the housing 101, openings 102 for inserting a finger (for example, forefinger) of the person to be measured are provided (in FIG. 1, only the openings provided on one side surface are illustrated, The opening provided on the other side is omitted).

  An electrode is embedded in the opening 102, and the measurement subject can detect the electrocardiographic waveform of the measurement subject by inserting the fingers of the right hand and the left hand into the respective openings 102. It has become.

  Reference numeral 103 denotes a display / operation unit, which displays a Lorentz plot obtained as one of geometric figure analysis methods of the time domain analysis method based on the detected electrocardiogram waveform and accepts various operations by the measurement subject. .

2. Functional Configuration of Apparatus FIG. 2 is a diagram showing a functional configuration of the pulsation fluctuation measuring apparatus according to the first embodiment of the present invention. In the figure, reference numeral 201 denotes a clock unit which oscillates a clock signal and supplies it to the CPU 202. Reference numeral 202 denotes a CPU which operates based on a clock signal oscillated from the clock unit 201. A RAM 203 functions as a work area for a program processed by the CPU 202 and also functions as a storage unit that temporarily stores data and the like during program processing. A ROM 204 stores a program processed by the CPU 202.

  Reference numeral 205 denotes a display / operation unit that displays a processing result processed by the CPU 202 and receives an instruction input from the measurement subject. Reference numeral 206 denotes an electrode that detects an electrocardiogram waveform of the measurement subject and outputs an electrical signal. An amplifier 207 amplifies the electrical signal output from the electrode 206 and converts it into a digital signal (hereinafter referred to as pulsation measurement data).

  A data recording unit 208 records calculation data obtained by processing the pulsation measurement data in the CPU 202.

  Functions 221 to 228 realized by the program stored in the ROM 204 are shown. A pulsation detection processing unit 221 receives the pulsation measurement data output from the amplifier 207. A pulsation interval detection processing unit 222 identifies the R wave of the electrocardiographic waveform based on the received pulsation measurement data, and then calculates each RR interval.

  A Lorentz plot calculation unit 223 generates Lorentz plot data (coordinate data for displaying a Lorentz plot in a two-dimensional graph area). Also, a heart rate per predetermined time, for example, one minute is calculated. Further, when the measurement is completed, the degree of fluctuation is calculated. The fluctuation degree refers to the size of the distribution area of the two-dimensional graph area (in the pulsation fluctuation measuring apparatus according to the present embodiment, the variation of Lorentz plot data).

  Reference numeral 224 denotes a respiratory rhythm storage unit, which stores respiratory rhythm patterns based on the optimal breathing method for the measurement subject.

  A data recording processing unit 225 records the calculated Lorentz plot data, the degree of fluctuation, and the like in the data recording unit 208.

  A display processing unit 226 displays various buttons on the display / operation unit 205 for receiving an instruction input from the measurement subject at the start of measurement. Further, during the measurement, based on the Lorentz plot data generated in the Lorentz plot calculation unit 223, the Lorentz plot is displayed on the display / operation unit 205, and in accordance with the timing of the R wave of the electrocardiogram waveform, A heart rate detection mark (described later) displayed by a symbol, a symbol mark or the like is blinked, and a heart rate is further displayed. When the measurement is completed, the calculated degree of fluctuation is displayed. The past measurement history is read and displayed on the display / operation unit 205. Further, the measurement subject displays a breathing rhythm in order to perform breathing based on the optimum breathing method.

  A user input processing unit 227 receives an instruction input input via the display / operation unit 205.

3. Screen Configuration in Pulsation Fluctuation Measuring Device FIG. 3 is a diagram showing a screen example of the display / operation unit 205 (in addition to a liquid crystal screen, a highly visible organic EL or the like may be used as the screen). Reference numeral 301 denotes a data display unit, and the display processing unit 226 displays various data. In the example of FIG. 3, a screen for displaying a Lorentz plot is shown, and the units of the horizontal axis and the vertical axis are msec. Reference numerals 308 and 309 are scroll bars for scrolling the data display unit 301, respectively. Reference numeral 307 denotes a cross key for arbitrarily moving the cursor and the scroll bar. A respiration rhythm display unit 310 displays a respiration rhythm based on the optimal respiration method.

  Reference numeral 302 denotes a measurement start button. When the measurement subject presses the measurement start button 302, a process (measurement process) for calculating the degree of fluctuation is started. Hereinafter, the measurement process performed by pressing the measurement start button 302 is referred to as “measurement start process”.

  Reference numeral 303 denotes a breath start button, and when the measurement subject presses the breath start button 303, the breath rhythm display process for displaying the breath rhythm based on the optimum breathing method on the breath rhythm display unit 310 is started. The measurement process is started. Hereinafter, the breathing rhythm display process performed by pressing the breathing start button 303 and the measurement process are collectively referred to as a “breathing start process”.

  Reference numeral 304 denotes a history display / end button. When the history display / end button 304 is pressed once, the data display unit 301 displays the degree of fluctuation measured in the past together with time information and the like. Further, when the history display / end button 304 is pressed again, the history display ends, and the data display unit 301 displays a screen for displaying the Lorentz plot.

  Reference numerals 305 and 306 denote a reduction button and an enlargement button, respectively, which reduce or enlarge the Lorentz plot, history display, and the like displayed on the data display unit 301.

4). Flow of processing in pulsation fluctuation measurement device (overall)
FIG. 4 is a flowchart showing the flow of overall processing in the pulsation fluctuation measuring apparatus according to the first embodiment of the present invention. When the apparatus is turned on in step S401, an initial screen (for example, the screen shown in FIG. 3) is displayed on the display / operation unit 205 in step S402.

  In step S403, it is determined what operation has been performed by the measurement subject. If it is determined that the measurement start button 302 has been pressed by the measurement subject, the process proceeds to step S404 and a measurement start process is executed (details of the measurement start process will be described later).

  If it is determined that the breathing start button 303 has been pressed by the measurement subject, the process proceeds to step S405.

  In step S405, a respiration start process is executed (details of the respiration start process will be described later).

  If it is determined that the history display / end button 304 has been pressed by the measurement subject, the process proceeds to step S406, where history display is performed (details will be described later).

  In step S407, it is determined whether the history display / end button 304 has been pressed again. If it is determined in step S407 that the history display / end button 304 has been pressed again, the process proceeds to step S408 to end the history display.

  In step S409, it is determined whether or not an operation for turning off the power of the pulsation fluctuation measuring apparatus has been performed. If it is determined that an operation for turning off the power has not been performed, the process returns to step S403. On the other hand, if it is determined that an operation to turn off the power has been performed, the process ends.

  Under the above flowchart, the measurement subject first presses the measurement start button 302, grasps the current pulsation fluctuation level, then presses the breath start button 303, and determines the respiratory rhythm based on the optimal breathing method. While breathing, check the degree of fluctuation of the pulsation. Thereby, the measurement subject can confirm that the fluctuation of the pulsation has been improved to a good state by the respiration performed under the respiration rhythm based on the optimum respiration method.

5. Details of Measurement Start Process (Step S404) Next, details of the measurement start process (step S404) will be described. FIG. 5A is a diagram showing details of the measurement process.

  In step S501A, the display screen is initialized. Specifically, if the previous processing result remains on the display screen, it is deleted and set to the initial screen (for example, the display screen shown in FIG. 3).

  In step S502A, after a timer for measuring a predetermined time is reset, counting is started.

  In step S503A, reception of pulsation measurement data output from the amplifier 207 is started. In step S504A, an R wave of the received pulsation measurement data is detected, and a heartbeat detection mark (described later) on the data display unit 301 is blinked in synchronization with the detection of the R wave. Further, based on the detected beat interval of the R wave, the heart rate per unit time (for example, per minute) is displayed on the data display unit 301.

  In step S505A, Lorentz plot data is calculated based on the detected pulsation interval of the R wave, and Lorentz plot is performed on the data display unit 301.

  FIG. 6A is a diagram showing a display screen of the display / operation unit 205 after reception of pulsation measurement data is started in step S503A.

  As shown in FIG. 6A, in the measurement start process (step S404), the measurement subject does not perform breathing based on the optimal breathing method, and therefore nothing is displayed on the breathing rhythm display unit 310.

  On the other hand, the data display unit 301 displays the processing results of steps S503A to 505A. In FIG. 6A, reference numeral 601 denotes a heartbeat detection mark, which blinks in accordance with the R wave of the pulsation measurement data received by the pulsation detection processing unit 221. Reference numeral 602 denotes a heart rate display column (a column for displaying the heart rate per minute). Reference numeral 603 denotes a column for displaying whether the data display unit 301 is currently enlarged, displayed in a standard size, or reduced. Reference numeral 604 denotes a field for displaying the current date and time. Reference numeral 605 denotes plotted Lorentz plot data. Reference numeral 606 denotes a fluctuation degree display field for displaying the fluctuation degree calculated based on the Lorentz plot data.

  In step S506A, it is determined whether or not a predetermined time has elapsed since the start of reception of pulsation measurement data. If the predetermined time has not elapsed, the process returns to step S502A. On the other hand, if the predetermined time has elapsed, the process proceeds to step S507A. The progress until a predetermined time elapses is displayed at an arbitrary position on the data display unit 301 (segment display or the like, countdown display or countup display), or a pet, a child, a landscape, a character, or the like is arbitrarily selected. Then, a screen display that sequentially completes the image or the like may be performed. Here, the Lorentz plot is sequentially displayed until a predetermined time elapses. However, all the Lorentz plots may be simultaneously displayed after the predetermined time elapses.

  In step S507A, the degree of fluctuation is calculated and displayed based on the Lorentz plot data calculated in the current measurement start process. Preferably, in step S507A, a line indicating the Lorentz plot data distribution area is displayed.

  FIG. 7A is a diagram showing a state in which a line 701 indicating the distribution area of Lorentz plot data is displayed, and the fluctuation degree 702 is displayed in the fluctuation degree display field 606.

  In step S508A, the timer count ends and the reception of the pulsation measurement data ends.

  In step S509A, the degree of fluctuation calculated in step S507A is recorded in the data recording unit 208.

6). Details of Respiration Start Processing (Step S405) Next, details of the respiration start processing (step S405) will be described. FIG. 5B is a diagram showing details of the breath start process.

  In step S501B, the display screen is initialized. Specifically, if the previous processing result remains on the display screen, it is deleted and set to the initial screen (for example, the display screen shown in FIG. 3).

  In step S502B, a respiratory rhythm based on a predetermined optimal respiratory method is read from the respiratory rhythm storage unit 224, and a bar graph display is started on the respiratory rhythm display unit 310. It should be noted that the bar graph displayed on the respiratory rhythm display unit 310 has a bar graph that extends in the right direction of the drawing as the time for inhaling air out of the respiratory rhythm, and with the passage of time for exhaling air. Suppose that the bar graph shrinks to the left side of the page.

  In step S503B, after a timer for measuring a predetermined time is reset, counting is started.

  In step S504B, reception of pulsation measurement data output from the amplifier 207 is started. In step S505B, an R wave of the received pulsation measurement data is detected, and a heartbeat detection mark (described later) on the data display unit 301 is blinked in synchronization with the detection of the R wave. Further, based on the detected beat interval of the R wave, the heart rate per unit time (for example, per minute) is displayed on the data display unit 301.

  In step S506B, Lorentz plot data is calculated based on the detected pulsation interval of the R wave, and Lorentz plot is performed on the data display unit 301.

  FIG. 6B is a diagram showing the display content of the display / operation unit 205 after reception of pulsation measurement data is started in step S504B.

  As shown in FIG. 6B, in the breathing start process (step S405), a bar graph 607 is displayed on the breathing rhythm display unit 310.

  In addition, the data display unit 301 displays the processing results from steps S504B to S506B. Note that the display contents displayed on the data display unit 301 in FIG. 6B are the same as the display contents displayed on the data display unit 301 in FIG.

  In step S507B, it is determined whether or not a predetermined time has elapsed since the start of reception of pulsation measurement data. If the predetermined time has not elapsed, the process returns to step S503B. On the other hand, if the predetermined time has elapsed, the process proceeds to step S508B. The progress until the predetermined time elapses is displayed at an arbitrary position on the data display unit 301 (segment display or the like, countdown display or countup display), or a pet, a child, a landscape, a character, or the like is arbitrarily selected. Then, a screen display that sequentially completes the image or the like may be performed. Here, the Lorentz plot is displayed in order until a predetermined time elapses, but all the Lorentz plots may be displayed simultaneously after the predetermined time elapses.

  In step S508B, the degree of fluctuation is calculated and displayed based on the Lorentz plot data calculated in the current respiration start process. Preferably, in step S508B, a line indicating the Lorentz plot data distribution area is displayed.

  FIG. 7B is a diagram showing a state in which a line 701 ′ indicating the distribution area of Lorentz plot data is displayed, and the degree of fluctuation 702 ′ is displayed in the degree of fluctuation display field 606.

  In step S509B, the display of the bar graph based on the respiratory rhythm is stopped, the timer count is ended, and the reception of the pulsation measurement data is ended.

  In step S510B, the degree of fluctuation calculated in step S508B is recorded in the data recording unit 208.

7). History display process (step S406)
FIG. 8 is a diagram illustrating a state in which a history display screen is displayed on the data display unit 301 by pressing the history display / end button 304.

  As shown in FIG. 8, the history display screen includes, as display items, the date and time (802) when the number (801) measurement was performed, the calculated degree of fluctuation (803), and Lorentz plot data (804). . Thereby, the person to be measured can refer to the past measurement history.

  As is clear from the above description, in the pulsation fluctuation measuring apparatus according to the present embodiment, the pulsation fluctuation is displayed to the measurement subject, so the measurement subject grasps whether the autonomic nerve is in a tension state. can do.

  Moreover, since the respiratory rhythm based on the optimal breathing method which relieves an autonomic nerve is displayed, the to-be-measured person can breathe based on the said respiratory rhythm.

  Furthermore, since the fluctuation of the pulsation during breathing is displayed to the measurement subject in real time, the measurement subject can confirm that the fluctuation of the pulsation has been improved by the breathing.

  That is, according to this embodiment, it becomes possible to relieve the tension of the subject's autonomic nerve and guide the subject to a state where the sympathetic nerve and the parasympathetic nerve are balanced.

[Second Embodiment]
In the first embodiment, when the breath start button 303 is pressed, the breathing rhythm based on the preset optimum breathing method is read from the breathing rhythm storage unit 224. Not limited to.

  For example, a plurality of breathing rhythms may be stored in advance so that the measurement subject can select when the breathing start button 303 is pressed.

  FIG. 9 is a diagram illustrating a state in which a breathing rhythm selection screen is displayed on the data display unit 301 when the breathing start button 303 is pressed. As shown in FIG. 9, the respiratory rhythm selection screen includes a respiratory rate (number of times) per minute and its rhythm as display items. Note that the rhythm here refers to the ratio of the time for inhaling air and the time for exhaling when realizing the respiration rate per minute. In the example of FIG. 9, for example, even when the number of breaths per minute is six, three types of rhythms are prepared depending on the ratio of the time of inhalation and the time of exhalation. Specifically, if the number of breaths per minute is 6, it will take 10 seconds per breath. However, if the sucking time and the exhaling time are evenly distributed, the sucking time = 5 sec, the exhaling time. = 5 sec (Refer to number of respiratory rhythm selection screen = 10). On the other hand, if the vomiting time is 3 times the vomiting time, the vomiting time is 2.5 sec, and the vomiting time is 7.5 sec (refer to number of respiratory rhythm selection screen = 11). If the inhalation time is three times the exhalation time, the inhalation time is 7.5 sec, and the exhalation time is 2.5 sec (refer to the number of breathing rhythm selection screen = 12).

  Note that the respiratory rhythm shown in FIG. 9 is merely an example, and other respiratory rhythms may be included, or the respiratory rhythm shown in FIG. 9 may not be included.

  The measurement subject can select a breathing rhythm by moving the cursor using the cross key 307 and designating and determining a desired number.

  In the first embodiment, the measurement date and time, the calculated degree of fluctuation, and the Lorentz plot data are recorded as the measurement history. However, as in the present embodiment, the respiratory rhythm is recorded. In the case of being configured to be selectable, a number indicating the selected respiratory rhythm may be recorded together.

[Third Embodiment]
In the first embodiment, when the measurement history is displayed, the degree of fluctuation or the like obtained by past measurement is displayed as text in time series, but the present invention is not limited to this. For example, the degree of fluctuation obtained by past measurement may be displayed as a bar graph.

  (A) of FIG. 10 is a figure which shows a mode that the fluctuation degree etc. which are recorded on the data recording part 208 were displayed by the bar graph in time series. As shown in FIG. 10A, by displaying a bar graph, the person to be measured can recognize the past fluctuation degree at a glance. Further, the selected respiratory rhythm may be displayed together with the bar graph of each fluctuation degree.

  Further, the degree of fluctuation or the like when a specific respiratory rhythm is selected may be extracted and displayed from the degree of fluctuation or the like obtained by past measurement.

  (B) of FIG. 10 extracts only the degree of fluctuation obtained by measurement when a specific respiratory rhythm is selected from the degree of fluctuation recorded in the data recording unit 208, and is a bar graph in time series. It is a figure which shows a mode displayed by. As shown in FIG. 10B, by displaying only the specific fluctuation degree, the measurement subject can recognize the fluctuation degree improvement effect for each respiratory rhythm.

  Moreover, after classifying the fluctuation degree etc. obtained by the past measurement for every respiratory rhythm, you may make it display, after calculating the average value of the fluctuation degree which belongs to each respiratory rhythm.

  (C) of FIG. 10 classifies the fluctuation degree etc. recorded in the data recording unit 208 for each respiratory rhythm, then calculates the average value of the fluctuation degree belonging to each respiratory rhythm, and for each respiratory rhythm, It is a figure which shows a mode that the average value of this calculated fluctuation degree was displayed with the bar graph. As shown in (c) of FIG. 10, by displaying separately for each respiratory rhythm, the measurement subject can recognize at a glance the difference in the effect of improving the degree of fluctuation for each respiratory rhythm.

  Moreover, it is good also as a structure which selects the optimal respiratory rhythm automatically based on the display of (c) of FIG.

[Fourth Embodiment]
In the first embodiment, the Lorentz plot displayed by the measurement start process is reset and then the Lorentz plot by the breath start process is displayed. However, the present invention is not limited to this.

  For example, the Lorentz plot by the measurement start process and the Lorentz plot by the breath start process may be displayed in an overlapping manner. FIG. 11 is a diagram illustrating a state in which the Lorentz plot by the measurement start process and the Lorentz plot by the breath start process are displayed in an overlapping manner. As a result, the difference in pulsation fluctuation before and during the start of breathing by the optimum breathing method becomes clear, and the effect of improving the degree of pulsation fluctuation by breathing based on the optimum breathing method is measured. Becomes easier to recognize.

  At this time, the Lorentz plot displayed on the data display unit 301 may be displayed separately in symbols in the measurement start process and respiration start process, or may be displayed separately in color. Moreover, you may make it display, changing both a symbol and a color.

  Furthermore, the degree of fluctuation calculated by the measurement start process may be displayed in comparison with the degree of fluctuation calculated by the breath start process. Reference numeral 1101 in FIG. 11 shows a state in which the fluctuation degree calculated by the measurement start process is compared with the fluctuation degree calculated by the breath start process.

[Fifth Embodiment]
In the first embodiment, the fluctuation degree obtained by the measurement start process and the fluctuation degree obtained by the breath start process are all recorded independently, but the present invention is not limited to this. Absent.

  For example, only the degree of fluctuation obtained by the breath start process is recorded, and for the degree of fluctuation obtained by the measurement start process immediately before that, the difference from the degree of fluctuation obtained by the breath start process is calculated, and this is calculated. It may be recorded in association with the degree of fluctuation obtained by the start process.

It is a figure which shows the external appearance structure of the pulsation fluctuation measuring apparatus 100 concerning the 1st Embodiment of this invention. It is a figure which shows the function structure of the pulsation fluctuation measuring apparatus concerning the 1st Embodiment of this invention. 6 is a diagram illustrating an example of a screen of a display / operation unit 205. FIG. It is a flowchart which shows the flow of the whole process in the pulsation fluctuation measuring apparatus concerning the 1st Embodiment of this invention. It is a figure which shows the detail of a measurement start process (step S404). It is a figure which shows the detail of a respiration start process (step S405). It is a figure which shows the display screen of the display / operation part 205 after reception of pulsation measurement data is started. It is a figure which shows the display screen of the display / operation part 205 after reception of pulsation measurement data is started. It is a figure which shows a mode that the line 701 which shows the distribution area | region of Lorentz plot data is displayed, and the fluctuation degree 702 is displayed on the fluctuation degree display column 606. FIG. It is a figure which shows a mode that the line 701 'which shows the distribution area | region of Lorentz plot data is displayed, and the fluctuation degree 702' is displayed on the fluctuation degree display run 606. FIG. It is a figure which shows a mode that the log | history display / end button 304 was pressed and the log | history display screen was displayed on the data display part 301. FIG. It is a figure which shows a mode that the breathing rhythm selection screen was displayed on the data display part 301, when the breathing start button 303 was pressed. It is a figure which shows a mode that the measurement log | history currently recorded on the data recording part 208 was displayed with the bar graph. It is a figure which shows a mode that the Lorentz plot by a measurement start process and the Lorentz plot by a respiration start process were accumulated and displayed. It is a figure for demonstrating the Lorentz plot method based on an electrocardiogram waveform. It is a figure for demonstrating the Lorentz plot method based on an electrocardiogram waveform. It is a figure which shows an example of a Lorenz plot.

Claims (10)

First display means for displaying a breathing rhythm to the subject;
An extraction means for detecting a biological signal of the measurement subject and extracting a beat interval;
Second display means for displaying an analysis result obtained by a time domain analysis for obtaining fluctuation of pulsation based on the pulsation interval extracted by the extraction means;
Recording means for recording the analysis result,
At least the extraction means can detect the measurement subject's biological signal and extract the pulsation interval in parallel with the respiratory rhythm being displayed by the first display means. To measure pulsation fluctuation. First display means for displaying a breathing rhythm to the subject;
An extraction means for detecting a biological signal of the measurement subject and extracting a beat interval;
Coordinate calculation means for calculating each coordinate data when the extracted beat interval of the nth beat and the beat interval of the (n + 1) th beat are sequentially plotted as a vertical axis or a horizontal axis of a two-dimensional graph region;
Variation calculating means for calculating variations of the coordinate data calculated within a predetermined time;
A second display means for plotting the coordinate data calculated within the predetermined time in the two-dimensional graph area and displaying variations in the coordinate data;
Recording means for recording the calculated variation,
At least the extraction means can detect the measurement subject's biological signal and extract the pulsation interval in parallel with the respiratory rhythm being displayed by the first display means. To measure pulsation fluctuation. A selection means for selecting one respiratory rhythm from a plurality of respiratory rhythms;
The pulsation fluctuation measuring apparatus according to claim 2, wherein the first display means displays the breathing rhythm selected by the selection means to the measurement subject. The recording means includes
The pulsation fluctuation measuring apparatus according to claim 3, wherein information indicating a breathing rhythm selected by the selection unit is recorded in association with the calculated variation. The selection means includes
5. The respiratory rhythm in which the average value of the variations belonging to each category is the largest when the variations recorded in the recording means are classified for each piece of information indicating the respiratory rhythm is selected. The pulsation fluctuation measuring device described in 1. The second display means includes
The coordinate data calculated when the biological signal of the measurement subject is detected and the beat interval is extracted in parallel with the display of the respiratory rhythm by the first display means, and the first In the two-dimensional graph region, the coordinate data calculated when the pulsation of the measurement subject is detected in a state where the respiratory rhythm is not displayed by the display means and the pulsation interval is extracted, The pulsation fluctuation measuring device according to claim 2, wherein the pulsation fluctuation measuring device is plotted while being distinguished from each other.   In parallel with the display of the breathing rhythm by the first display means, the biological signal of the measurement subject is detected and the variation in the coordinate data calculated when the beat interval is extracted, and The first display means detects the pulsation of the measurement subject in a state where the respiratory rhythm is not displayed, and calculates a difference from the variation in the coordinate data calculated when the pulsation interval is extracted. The pulsation fluctuation measuring apparatus according to claim 2, further comprising a difference calculating means. A first display step for displaying a breathing rhythm to the subject;
An extraction step of detecting a biological signal of the measurement subject and extracting a beat interval;
A second display step for displaying an analysis result obtained by a time domain analysis for obtaining fluctuation of pulsation based on the pulsation interval extracted in the extraction step;
A recording step for recording the analysis result,
At least the extraction step can detect the measurement subject's biological signal and extract the pulsation interval in parallel with the display of the respiratory rhythm in the first display step. Information processing method in a pulsation fluctuation measuring apparatus. A first display step for displaying a breathing rhythm to the subject;
An extraction step of detecting a biological signal of the measurement subject and extracting a beat interval;
A coordinate calculation step of calculating each coordinate data when the extracted beat interval of the nth beat and the beat interval of the (n + 1) th beat are sequentially plotted as a vertical axis or a horizontal axis of a two-dimensional graph region;
A variation calculating step of calculating variations of the coordinate data calculated within a predetermined time;
A second display step of plotting the coordinate data calculated within the predetermined time in the two-dimensional graph area and displaying variations in the coordinate data;
A recording step for recording the calculated variation,
At least the extraction step can detect the measurement subject's biological signal and extract the pulsation interval in parallel with the display of the respiratory rhythm in the first display step. Information processing method in a pulsation fluctuation measuring apparatus. A control program for realizing the information processing method according to claim 8 or 9 by a computer.

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