Information generation device, information generation method, computer program, and non-temporary computer readable medium

Abstract

To objectively grasp the depth of the respiration of a subject.SOLUTION: An information generation device 1 comprises an acquisition unit 2 and a control unit 5. The acquisition unit 2 is configured to acquire respiration waveform data regarding the respiratory pressure of a subject P. The control unit 5 is configured to compare preset respiration reference waveform data with the respiration waveform data acquired by the acquisition unit 2 and thereby generate respiration depth information indicative of the depth of respiration in the respiration waveform data with respect to the respiration reference waveform data.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an information generating device, an information generating method, a computer program for causing the device to execute the method, and a non-transitory computer-readable medium having the computer program recorded thereon. [Background technology]

[0002] Patent Document 1 discloses a biometric information processing device that performs real-time analysis of the measurement results of nasal respiratory pressure and displays the analysis results on a display. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2018-201725 A Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, the respiratory condition of a subject is generally judged based on the speed and depth of breathing. The speed of breathing can be objectively judged from the respiratory rate, but the depth of breathing is subjectively judged by medical personnel by visually observing the respiratory waveform, making it difficult to judge objectively. The bioinformation processing device according to Patent Document 1 can calculate the respiratory rate of the subject, so that medical personnel can objectively grasp the speed of breathing by using such a bioinformation processing device, but cannot objectively grasp the depth of breathing. In this respect, there is room for improvement in conventional bioinformation processing devices.

[0005] The present invention aims to provide an information generating device that can objectively grasp the depth of a subject's breathing, an information generating method, a computer program for causing the device to execute the method, and a non-transitory computer-readable medium on which the computer program is recorded. [Means for solving the problem]

[0006] In order to achieve the above object, an information generating device according to one aspect of the present invention comprises: The device includes an acquisition unit configured to acquire respiratory waveform data relating to the respiratory pressure of a subject, and a control unit configured to generate respiratory depth information indicating the respiratory depth of the respiratory waveform data relative to the respiratory reference waveform data by comparing the respiratory waveform data acquired by the acquisition unit with preset reference respiratory waveform data.

[0007] In addition, an information generating method according to one aspect for achieving the above object includes: acquiring respiratory waveform data relating to the subject's respiratory pressure; The information generating device executes a step of comparing the acquired respiratory waveform data with preset respiratory reference waveform data to generate respiratory depth information indicating the respiratory depth of the respiratory waveform data relative to the respiratory reference waveform data.

[0008] In addition, a computer program according to one aspect for achieving the above object comprises: A function for acquiring respiratory waveform data relating to the subject's respiratory pressure; The computer is caused to realize a function of generating breathing depth information indicating the breathing depth of the respiratory waveform data relative to the respiratory reference waveform data by comparing the acquired respiratory waveform data with preset reference respiratory waveform data.

[0009] In addition, a non-transitory computer-readable medium according to one embodiment for achieving the above object includes: The computer program is stored.

[0010] According to the information generating device, the information generating method, the computer program, and the non-transitory computer-readable medium of the above configuration, the respiration depth information is generated by comparing the respiration reference waveform data, which is a standard for determining the respiration depth of the subject, with the respiration waveform data acquired from the subject, and is therefore information that objectively indicates the respiration depth of the subject. Therefore, for example, by visually checking the display screen based on the respiration depth information, a medical professional can determine the respiration depth based on the respiration depth information, which is an objective index, instead of judging the respiration depth based on personal experience, as in the past. Effect of the Invention

[0011] According to the present invention, it is possible to provide an information generating device capable of objectively grasping the depth of a subject's breathing, an information generating method, a computer program for causing the device to execute the method, and a non-transitory computer-readable medium on which the computer program is recorded. [Brief description of the drawings]

[0012] [Figure 1] FIG. 1 is a functional block diagram of an information generating device according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a flow chart diagram of an information generating method according to an embodiment of the present invention. [Diagram 3] FIG. 3 shows an example of a biological waveform including a respiratory waveform of a subject. [Figure 4] FIG. 4 shows an example of a reference waveform of a subject's breathing. [Diagram 5] FIG. 5 is an example of a display screen according to an embodiment of the present invention. [Figure 6] FIG. 6 shows an example of a respiratory waveform of a subject. [Figure 7] FIG. 7 is an example of a display screen according to an embodiment of the present invention. [Figure 8] FIG. 8 is an example of a display screen according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings. In the description of this embodiment, for convenience of explanation, the "left-right direction" and the "up-down direction" will be mentioned as appropriate. These directions are relative directions set in each waveform illustrated in Fig. 4 and Fig. 6, or in the display unit 7 illustrated in Fig. 5 and Fig. 7 to Fig. 8.

[0014] First embodiment Fig. 1 is a functional block diagram of an information generating device 1 according to an embodiment of the present invention. The information generating device 1 is, for example, a bedside monitor. As illustrated in Fig. 1, the information generating device 1 includes an acquisition unit 2, an operation unit 3, a storage unit 4, a control unit 5, an output interface 6, a display unit 7, and a notification unit 8. These are connected to each other via a bus 9 so as to be able to communicate with each other.

[0015] The acquisition unit 2 is configured to acquire biological information including respiratory waveform data related to the respiratory pressure of the subject P from the subject P. The respiratory waveform data is based on a biological signal corresponding to respiratory air from at least one of the mouth and nose of the subject P detected by the pressure sensor 10. The biological information acquired by the acquisition unit 2 may include electrocardiogram waveform data, transcutaneous arterial blood oxygen saturation data, etc. detected by various sensors. The biological information acquired by the acquisition unit 2 is transmitted to the storage unit 4 and the control unit 5.

[0016] The operation unit 3 is configured to receive input operations from a person (e.g., a medical professional) operating the information generating device 1, and to generate an instruction signal corresponding to the input operation. The operation unit 3 is, for example, a touch panel superimposed on the display unit 7, operation buttons attached to the housing of the information generating device 1, etc. The operation unit 3 receives various input operations, etc., generates an instruction signal corresponding to the input operation, and transmits it to the control unit 5.

[0017] The storage unit 4 is, for example, a hard disk drive (HDD) or a solid-state drive (SSD). The storage unit 4 is a storage device such as a 3D state drive. The storage unit 4 stores the biometric information acquired by the acquisition unit 2, the information input via the operation unit 3, the information generated by the control unit 5, and the like.

[0018] The control unit 5 includes a memory 51 and a processor 52. The memory 51 is composed of, for example, a ROM (Read Only Memory) in which various programs and the like are stored, a RAM (Random Access Memory) having multiple work areas in which various programs and the like executed by the processor 52 are stored, and the like. The processor 52 is, for example, a CPU (Central Processing Unit), and is configured to load a program designated from the various programs incorporated in the ROM onto the RAM and execute various processes in cooperation with the RAM.

[0019] The control unit 5 is configured to generate respiration depth information, which is information related to the depth of respiration. The generated respiration depth information can be transmitted to the storage unit 4. The respiration depth information includes classification information according to the classified state of the depth of respiration of the subject P, and numerical information that numerically represents the state of the depth of respiration of the subject P.

[0020] The control unit 5 is configured to determine whether or not it is necessary to notify the state of the depth of breathing of the subject P based on the depth of breathing information. The control unit 5 may be configured to determine whether or not it is necessary to notify the state of the depth of breathing of the subject P using not only the depth of breathing information but also, for example, aggregate information, etc., which will be described later. When it is determined that it is necessary to notify the state of the depth of breathing of the subject P, the control unit 5 is configured to generate a notification signal for notifying a medical professional, etc., of the state of the depth of breathing of the subject P. The generated notification signal is transmitted to the external device 20 via the notification unit 8 or the output interface 6.

[0021] The control unit 5 is configured to generate aggregated information that aggregates a plurality of pieces of breathing depth information for a predetermined time. The length of the predetermined time is arbitrarily set by a medical professional or the like. The predetermined time is, for example, 10 minutes. The generated aggregated information can be transmitted to the storage unit 4.

[0022] The control unit 5 is configured to generate display data for displaying the respiratory waveform data and respiratory depth information on the display unit 7 or a display unit provided in the external device 20. The generated display data is transmitted to the output interface 6 or the display unit 7.

[0023] The output interface 6 is configured to output an output signal OS corresponding to information transmitted to the output interface 6. The output signal OS may be transmitted to an external device 20. The output interface 6 may optionally include circuitry to convert the output data into an output signal OS that can be processed by the external device 20.

[0024] The external device 20 is configured to notify various pieces of information to medical personnel, etc., by at least one of visual notification, audio notification, and tactile notification. The external device 20 is, for example, a tablet terminal, a smartphone, etc.

[0025] The display unit 7 is configured to display a display screen corresponding to the display data received from the control unit 5. The display unit 7 is, for example, a touch screen display such as a liquid crystal display or an organic electroluminescence display. The display unit 7 may display not only the respiratory waveform data and the respiratory depth information, but also other information. The other information may be, for example, information related to percutaneous arterial oxygen saturation, heart rate, electrocardiogram, etc.

[0026] The notification unit 8 is configured to notify the state of the breathing depth of the subject P based on a notification signal received from the control unit 5. The manner of notification by the notification unit 8 is similar to the manner of notification by the external device 20.

[0027] Next, an information generating method used in this embodiment will be described with reference to FIG. 2 to FIG. 7. FIG. 2 is a flow chart of the information generating method according to this embodiment. As illustrated in FIG. 2, the acquisition unit 2 acquires bioinformation from the subject P before surgery (STEP 01). For example, when a medical professional operates the operation unit 3 to acquire bioinformation from the subject P, an instruction signal corresponding to the operation is transmitted from the operation unit 3 to the control unit 5. The control unit 5 controls the acquisition unit 2 to acquire respiratory waveform data from the subject P based on the instruction signal. In this embodiment, when a biowaveform based on the bioinformation acquired from the subject P in STEP 01 is displayed on the display unit 7, the biowaveform illustrated in FIG. 3 is displayed on the display unit 7. The biowaveform includes a respiratory waveform 71, a waveform 72 of percutaneous arterial oxygen saturation, and an electrocardiogram waveform 73. In the example illustrated in FIG. 3, the respiratory rate is 12, the value of the percutaneous arterial oxygen saturation is 98, and the heart rate is 80. 3, the reference numeral 80 indicates that the respiratory waveform 71, the percutaneous arterial oxygen saturation waveform 72, and the electrocardiogram waveform 73 are in phase with each other. When the acquisition unit 2 acquires the biological information from the subject P, the acquisition unit 2 transmits the acquired biological information to the storage unit 4.

[0028] In this embodiment, the subject P undergoes surgery after STEP01, and an anesthetic is administered to the subject P during the surgery. If the anesthetic administered during the surgery remains in the body of the subject P, the breathing of the subject P after the surgery may become shallower than normal breathing due to the remaining anesthetic. In particular, during sleep, breathing may become shallower due to the influence of the remaining anesthetic. For this reason, as illustrated in FIG. 2, the acquisition unit 2 acquires biological information from the subject P after the surgery not long after the surgery is completed (STEP02). The process of acquiring biological information in STEP02 is the same as the process of acquiring biological information in STEP01. When a respiratory waveform 75 (an example of a second respiratory waveform) based on the respiratory waveform data acquired in STEP02 is displayed on the display unit 7, for example, a waveform shown in FIG. 5 is displayed on the display unit 7. In addition, the respiratory waveform data includes expiratory waveform data of the subject P (e.g., data regarding the expiratory volume and exhalation detection time of the subject P) and inhalation waveform data of the subject P (e.g., data regarding the inhalation volume and inhalation detection time of the subject P).

[0029] As illustrated in FIG. 2, when biological information is acquired from the subject P after surgery, the control unit 5 judges whether or not the respiratory waveform data acquired in advance from the subject P is in the storage unit 4 (STEP 03). In this embodiment, since the respiratory waveform data acquired in advance from the subject P is in the storage unit 4 (YES in STEP 03), the control unit 5 sets the respiratory reference waveform data based on the previously acquired respiratory waveform data (STEP 04). The respiratory reference waveform data may be automatically set by the control unit 5, or may be set by a medical professional through an input operation to the operation unit 3. Furthermore, since the normal respiratory state (depth of breathing) of the subject is normally known before surgery, the control unit 5 sets the respiratory waveform data (respiration reference waveform data) that serves as a reference from the respiratory waveform data acquired from the subject P before surgery. Furthermore, when the respiratory reference waveform 74 (an example of a first respiratory waveform) based on the respiratory reference waveform data set in STEP 04 is displayed on the display unit 7, the waveform illustrated in FIG. 4 is displayed on the display unit 7. The respiratory reference waveform 74 is a waveform indicating the standard respiratory pressure level of the subject P.

[0030] 2, if the storage unit 4 does not have respiratory waveform data previously acquired from the subject P (NO in STEP 03), the control unit 5 acquires attribute information of the subject P stored in the storage unit 4 (STEP 05). The attribute information includes, for example, age information, sex information, chronic disease information, and past disease information.

[0031] When the control unit 5 acquires the attribute information of the subject P, it sets the reference respiratory waveform data based on the acquired attribute information (STEP 06). In this case, the control unit 5 sets the reference respiratory waveform data based on, for example, statistical respiratory waveform data acquired from a plurality of other people having attribute information identical or similar to the attribute information of the subject P. The other people may be, for example, subjects close in age to the subject P or subjects with the same chronic disease as the subject P.

[0032] After setting the reference respiratory waveform data, the control unit 5 generates respiratory depth information based on the respiratory waveform data acquired from the subject P after surgery and the reference respiratory waveform data (STEP 07).

[0033] Here, the process performed by the control unit 5 in STEP 07 will be described in detail with reference to Fig. 4 and Fig. 5. As illustrated in Fig. 4, the control unit 5 determines a first amplitude A1 (an example of a first value) indicating a respiratory pressure based on the reference respiratory waveform data, based on the inhalation peak pressure 74a and the exhalation peak pressure 74b in the reference respiratory waveform 74. The first amplitude A1 is the difference between the height of the inhalation peak pressure 74a and the height of the exhalation peak pressure 74b.

[0034] 5, the respiratory waveform 75 includes a plurality of unit respiratory waveforms 751-753. A unit respiratory waveform is a respiratory waveform corresponding to one breath of the subject P. The control unit 5 determines second amplitudes A21-A23 (an example of a second value) indicating respiratory pressures based on respiratory waveform data, based on the inhalation peak pressures 751a-753a and the exhalation peak pressures 751b-753b in the unit respiratory waveforms 751-753, respectively.

[0035] The control unit 5 calculates relative values ​​X1 to X3 (an example of numerical information) indicating the relative magnitudes of the second amplitudes A21 to A23 with respect to the first amplitude A1, respectively. For example, the control unit 5 calculates the relative value X1 based on the following formula (1): X1=A21 / A1*100(%) (1) In this embodiment, the magnitude of the second amplitude A21 is 3 / 4 of the magnitude of the first amplitude A1, so the relative value X1 is 75%.

[0036] The relative values ​​X2 to X3 are calculated in the same manner as the relative value X1. That is, the control unit 5 generates the relative values ​​X1 to X3 indicating the relative magnitudes of the second amplitudes A21 to A23 to the first amplitude A1 by comparing the first amplitude A1 of the respiratory reference waveform 74 included in the respiratory reference waveform data with the second amplitudes A21 to A23 of the respiratory waveform 75 included in the respiratory waveform data acquired by the acquisition unit 2. The relative values ​​X1 to X3 are generated each time the unit respiratory waveforms 751 to 753 are acquired.

[0037] The control unit 5 classifies the state of the depth of breathing of the subject P based on the generated relative values ​​X1 to X3 and the classification standard information stored in the storage unit 4. The classification standard information is information for setting standards used to classify the state of the depth of breathing. The state of the depth of breathing can be classified into three states, for example, "normal, caution, and danger". In this case, the classification standard information is, for example, a threshold value for defining the boundaries (ranges) of the three classifications. In this embodiment, the control unit 5 classifies the state of the depth of breathing of the subject P as "dangerous" when the relative value is 19% or less, classifies the state as "caution" when the relative value is 20% or more and 49% or less, and classifies the state as "normal" when the relative value is 50% or more.

[0038] 5, since the relative values ​​X1 to X3 are equal to or greater than 50%, the control unit 5 classifies the breathing depth state of the subject P corresponding to the unit breathing waveforms 751 to 753 as "normal". After classifying the breathing depth state of the subject P corresponding to the unit breathing waveforms 751 to 753, the control unit 5 generates classification information according to the classified breathing depth state of the subject P. In this way, the control unit 5 generates breathing depth information including numerical information and classification information.

[0039] Returning to FIG. 2, the process after STEP 08 will be described. In STEP 08, the control unit 5 judges whether a predetermined time has passed since the acquisition unit 2 started to acquire post-operative respiratory waveform data from the subject P. In this embodiment, the predetermined time is assumed to be 10 minutes. For example, if the acquisition unit 2 started to acquire post-operative respiratory waveform data from the subject P at 18:00 and the current time is 18:02, the control unit 5 judges that the predetermined time (10 minutes) has not passed since 18:00 (NO in STEP 08). In this case, the control unit 5 generates display data for displaying the respiratory waveform data and respiratory depth information on the display unit 7 or the display unit of the external device 20 (STEP 09).

[0040] The control unit 5 is configured to generate, as the display data, either first display data in which the inhalation pressure is higher than the exhalation pressure in the respiratory waveform 75, or second display data in which the exhalation pressure is higher than the inhalation pressure in the respiratory waveform 75. For example, when a medical professional operates the operation unit 3 to cause the control unit 5 to generate the first display data, the operation unit 3 generates an instruction signal corresponding to the input operation, and the control unit 5 generates the first display data based on the instruction signal. As illustrated in FIG. 5, in this embodiment, the inhalation pressure is higher than the exhalation pressure in the respiratory waveform 75. Therefore, the control unit 5 generates the first display data. The generated first display data is transmitted to the output interface 6 or the display unit 7.

[0041] When the control unit 5 generates the display data, it controls the display unit 7 or a display unit included in the external device 20 to display a display screen corresponding to the generated display data (STEP 10). In this embodiment, the control unit 5 transmits first display data to the display unit 7. When the display unit 7 receives the first display data from the control unit 5, a display screen corresponding to the received first display data is displayed on the display unit 7. When STEP 10 is executed, the process returns to STEP 07.

[0042] Here, a display screen displayed on the display unit 7 at 18:02 will be described with reference to FIG. 5. At 18:02, the display unit 7 displays a display screen as shown in FIG. 5. As shown in FIG. 5, the display unit 7 displays a reference respiratory waveform 74, a respiratory waveform 75, a waveform 76 of percutaneous arterial blood oxygen saturation, and an electrocardiogram waveform 77. The reference respiratory waveform 74, the respiratory waveform 75, the waveform 76 of percutaneous arterial blood oxygen saturation, and the electrocardiogram waveform 77 are displayed side by side in the vertical direction. These waveforms are arranged in the order of the reference respiratory waveform 74, the electrocardiogram waveform 77, the waveform 76 of percutaneous arterial blood oxygen saturation, and the respiratory waveform 75 from the top. That is, the reference respiratory waveform 74 is displayed above the respiratory waveform 75, the waveform 76 of percutaneous arterial blood oxygen saturation, and the electrocardiogram waveform 77, and the respiratory waveform 75 is displayed below the reference respiratory waveform 74, the waveform 76 of percutaneous arterial blood oxygen saturation, and the electrocardiogram waveform 77. The horizontal length of the respiratory reference waveform is about 2 / 5 of the horizontal length of the respiratory waveform. The respiratory rate, the value of the percutaneous arterial oxygen saturation, and the heart rate are displayed near the left side of the respiratory waveform 75, the waveform 76 of the percutaneous arterial oxygen saturation, and the electrocardiogram waveform 77, respectively. It is needless to say that the display positions of the respiratory reference waveform 74, the respiratory waveform 75, the waveform 76 of the percutaneous arterial oxygen saturation, and the electrocardiogram waveform 77 are not limited to this example.

[0043] Markers M1 to M3 as classification information and relative values ​​X1 to X3 are displayed near the peaks of each unit respiratory waveform 751 to 753. The markers M1 to M3 are hatched to indicate the classified respiratory depth of the subject P. Since the relative values ​​X1 to X3 corresponding to the unit respiratory waveforms 751 to 753 are all 50% or more, the respiratory depth of the subject P corresponding to the unit respiratory waveforms 751 to 753 is all "normal". Therefore, the markers M1 to M3 are hatched (hatched with horizontal lines) to indicate "normal". The relative values ​​X1 to X3 are displayed near the left side of the markers M1 to M3.

[0044] Next, with reference to FIG. 6, the process performed by the control unit 5 in STEP 07 after STEP 10 is executed will be described in detail. FIG. 6 shows how the breathing of the subject P gradually becomes shallower due to the anesthetic. The control unit 5 generates relative values ​​X4 to X9 every time the unit respiratory waveforms 754 to 759 are acquired, using the same principle as that used to generate the relative values ​​X1 to X3. When the control unit 5 generates the relative values ​​X4 to X9, it classifies the state of the depth of breathing of the subject P corresponding to the unit respiratory waveforms 754 to 759 based on the relative values ​​X4 to X9, and generates classification information corresponding to the classification. In the example shown in FIG. 6, since the relative value X4 is 50% or more, the control unit 5 classifies the state of the depth of breathing of the subject P corresponding to the unit respiratory waveform 754 as "normal". Near the right side of the relative value X4, there is a marker M4 with hatching (horizontal hatching) indicating "normal". Since the relative values ​​X5 to X7 are 20% or more and 49% or less, the control unit 5 classifies the state of the depth of breathing of the subject P corresponding to the unit respiratory waveforms 755 to 757 as "Caution". Markers M5 to M7 with hatching (vertical hatching) indicating "Caution" are located near the right side of the relative values ​​X5 to X7. Since the relative values ​​X8 to X9 are 19% or less, the control unit 5 classifies the state of the depth of breathing of the subject P corresponding to the unit respiratory waveforms 758 to 759 as "Danger". Markers M8 to M9 with hatching (diagonal hatching) indicating "Danger" are located near the right side of the relative values ​​X8 to X9. In this way, the control unit 5 continues to generate the respiratory depth information until a predetermined time has elapsed from the time when the acquisition unit 2 started to acquire post-operative respiratory waveform data from the subject P.

[0045] Returning to Fig. 2, STEP 11 to STEP 13 will be described. For example, when the current time is 18:10, the control unit 5 determines that a predetermined time (10 minutes) has passed since the time (18:00) when the acquisition unit 2 started to acquire post-operative respiratory waveform data from the subject P (YES in STEP 08). In this case, the control unit 5 generates aggregate information on the respiratory depth of the subject P at the predetermined time based on a plurality of pieces of respiratory depth information continuously generated during the 10 minutes since the acquisition of post-operative respiratory waveform data started from the subject P (STEP 11).

[0046] As illustrated in Fig. 6, the control unit 5 generates average respiration depth information and accumulated number information as aggregate information. The average respiration depth information is an average value of the relative magnitude of the second amplitude to the first amplitude A1 at a predetermined time, for example, an average value of the relative magnitudes (relative values ​​X1 to X9) of the second amplitudes A21 to A29 to the first amplitude A1 at a predetermined time. The accumulated number information is information indicating the accumulated number of occurrences for each classification (i.e., danger, caution, normal) related to the state of respiration depth.

[0047] In this embodiment, the average respiration depth information is the average value of the relative values ​​X1 to X9. Since the average value of the relative values ​​X1 to X9 is 46%, in this embodiment, the average value (46%) is the average respiration depth information. However, the average respiration depth information is not limited to numerical information such as an average value, and may be other information such as a level or a character indicating the state of respiration depth (normal, etc.). The control unit 5 classifies the state of the respiration depth of the subject P for each unit respiration waveform based on the acquired respiration waveform data and the reference respiration waveform data, and counts how many times the state has been classified. In this embodiment, the identification marks S1 to S3 are used as identification marks representing the classification of the state of respiration depth. The identification marks S1 to S3 are hatched to represent the state of the respiration depth of the subject P according to the same criteria as the markers M1 to M9. The numbers displayed to the right of the identification marks S1 to S3 indicate the cumulative number of times classified into each state. That is, the control unit 5 counts up the fact that the state of the depth of breathing of the subject P based on the respiratory waveform data acquired within 10 minutes after the start of acquisition of the respiratory waveform data from the subject P after surgery was classified as “normal” 61 times, “caution” 45 times, and “danger” twice. The control unit 5 generates accumulated frequency information indicating the counting result.

[0048] 2, when the aggregated information is generated, the control unit 5 generates display data for displaying the respiratory waveform data, the respiratory depth information, and the aggregated information on the display unit 7 or the display unit of the external device 20 (STEP 12). Note that the control unit 5 generates first display data in STEP 12 as in STEP 09. In this embodiment, the generated first display data is transmitted to the display unit 7.

[0049] When the control unit 5 transmits the generated first display data to the display unit 7, a display screen corresponding to the first display data is displayed on the display unit 7, similarly to STEP 10 (STEP 13).

[0050] Here, the display screen displayed on the display unit 7 at 18:10 will be described with reference to FIG. 7. However, for the sake of convenience, description of the same parts as those in the display screen illustrated in FIG. 5 will be omitted. After a predetermined time (10 minutes) has elapsed, the aggregated information is updated based on a plurality of pieces of breathing depth information generated in the last 10 minutes. At 18:10, the display unit 7 displays the display screen illustrated in FIG. 7. The display screen illustrated in FIG. 7 differs from the display screen illustrated in FIG. 5 in that average breathing depth information is displayed adjacent to the left of the breathing rate ("8" in FIG. 7) and that identification markers S1 to S3 and cumulative count information are displayed adjacent to the left of the average breathing depth information.

[0051] Markers M7-M9 (classification information) and relative values ​​X7-X9 (numerical information) are displayed near the peaks of each unit respiratory waveform 757-759. The markers M7-M9 are hatched as described above. That is, since the relative value X7 corresponding to the unit respiratory waveform 757 is 20%, the marker M7 is hatched with vertical lines. Moreover, since the relative value X8 corresponding to the unit respiratory waveform 758 is 16%, and the relative value X9 corresponding to the unit respiratory waveform 759 is 15%, the markers M8-M9 are hatched with oblique lines.

[0052] Next, a function of notifying the state of the breathing depth of the subject P will be described. When the control unit 5 determines that the state of the breathing depth of the subject P is poor based on the breathing depth information, it determines that it is necessary to notify the state of the breathing depth of the subject P. For example, when the relative value calculated based on the breathing depth information is 49% or less, the control unit 5 determines that the state of the breathing depth of the subject P is poor and determines that it is necessary to notify the state of the breathing depth of the subject P. In this case, the control unit 5 generates a notification signal for notifying a medical worker of the state of the breathing depth of the subject P, and transmits the generated notification signal to the notification unit 8 or the external device 20. On the other hand, when the relative value calculated based on the breathing depth information is 50% or more, for example, the control unit 5 determines that the state of the breathing depth of the subject P is good. In this case, the control unit 5 determines that it is not necessary to notify the state of the breathing depth of the subject P, and does not generate a notification signal.

[0053] When the control unit 5 generates a notification signal, for example, the control unit 5 transmits the generated notification signal to the notification unit 8. When the notification unit 8 receives a notification signal, the notification unit 8 notifies a medical staff member of the state of the depth of breathing of the subject P based on the received notification signal. When the notification unit 8 auditorily notifies a medical staff member around the information generating device 1 of the state of the depth of breathing of the subject P, for example, the notification unit 8 outputs a voice such as "The breathing condition of the subject P seems to be bad. Please check the condition of the subject P." When the notification unit 8 visually notifies a medical staff member around the information generating device 1 of the state of the depth of breathing of the subject P, for example, the notification unit 8 causes the display unit 7 to output text information such as "The breathing condition of the subject P seems to be bad. Please check the condition of the subject P."

[0054] The functions described above can be realized by the memory 51 and the processor 52. A computer program for executing the above-mentioned processes can be stored in the memory 51. The computer program may be stored in the memory 51 in advance, or may be downloaded from an external server via a communication network.

[0055] In addition, in this embodiment, a computer-readable medium may be used. A computer-readable medium refers to any type of physical memory (RAM, ROM, etc.) capable of storing information or data that can be read by the processor 52. A computer-readable medium may store instructions for execution by one or more processors. Note that the term "computer-readable medium" includes tangible items and excludes carrier waves and transitory signals (i.e., non-transitory). Examples of non-transitory computer-readable media include magnetic recording media (e.g., flexible disks, magnetic tapes, hard disk drives), magneto-optical recording media (e.g., magneto-optical disks), CD-ROMs (Read Only Memory), CD-Rs, CD-R / Ws, semiconductor memories (e.g., mask ROMs, PROMs (Pro grammable ROM), EPROM (Erasable PROM), and Flash ROM).

[0056] Generally, the respiratory condition of a subject is judged based on the speed and depth of breathing. The speed of breathing can be objectively judged from the respiratory rate, but the depth of breathing is subjectively judged by medical personnel by visually observing the respiratory waveform, and is difficult to judge objectively. Therefore, the inventor has come to think that it may be possible to objectively grasp the depth of breathing by comparing the reference respiratory waveform with the respiratory waveform included in the respiratory waveform data obtained from the subject.

[0057] According to the above-mentioned configuration, the breathing depth information generated by the control unit 5 is generated by comparing the breathing reference waveform data, which is a standard for determining the breathing depth of the subject P, with the breathing waveform data acquired from the subject. In other words, the breathing depth information is information that objectively indicates the breathing depth of the subject. Therefore, for example, a medical professional can determine the breathing depth based on the breathing depth information, which is an objective index, by visually checking the display unit 7 on which the breathing depth information is displayed, instead of judging the breathing depth based on personal experience as in the past. As a result, the medical professional can objectively grasp the breathing depth of the subject P.

[0058] Furthermore, according to the above configuration, the respiration depth information generated by the control unit 5 indicates the relative magnitude of the second amplitudes A21-A29 of the second respiratory waveform included in the respiratory waveform data relative to the first amplitude A1 of the first respiratory waveform included in the respiratory reference waveform data. Therefore, even in this case, the medical staff can determine the respiration depth based on the respiration depth information, which is an objective index, and can objectively grasp the respiration depth of the subject P.

[0059] In addition, according to the above-mentioned configuration, the respiratory reference waveform data can be set based on the respiratory waveform data previously acquired from the subject P. Since the respiratory waveform varies greatly from subject to subject, it is preferable to set the respiratory reference waveform data based on the respiratory waveform data previously acquired from the subject. Therefore, according to the above-mentioned configuration, more accurate respiratory depth information can be generated.

[0060] Furthermore, according to the above-mentioned configuration, the respiratory reference waveform data can be set based on the attribute information of the subject P. Therefore, even if there is no respiratory waveform data previously acquired from the subject P, for example, the respiratory depth information can be generated by using the respiratory reference waveform data set based on the attribute information of the subject P.

[0061] Furthermore, according to the above configuration, the attribute information includes age information, sex information, chronic disease information, and past illness information. Therefore, even if there is no respiratory waveform data previously acquired from the subject P, for example, respiratory depth information is generated based on respiratory reference waveform data set based on statistical respiratory waveform data acquired from multiple other people with attributes similar to those of the subject P. Therefore, even if there is no respiratory waveform data previously acquired from the subject P, it is possible to generate relatively accurate respiratory depth information.

[0062] Furthermore, according to the above configuration, the respiration depth information is generated by comparing the first amplitude A1 of the first respiration waveform included in the respiration reference waveform data with the second amplitudes A21-A29 of the second respiration waveform included in the respiration waveform data. The first amplitude A1 and the second amplitudes A21-A29 are determined using both the peak pressure of expiration and the peak pressure of inspiration, so that the control unit 5 can easily generate respiration depth information that more accurately reflects the respiration state of the subject P.

[0063] Furthermore, according to the above configuration, the respiration depth information includes classification information according to the relative magnitudes of the second amplitudes A21 to A29 with respect to the first amplitude A1. Therefore, by using the classification information, a medical professional can objectively and easily grasp the state of the respiration depth of the subject P.

[0064] Furthermore, according to the above configuration, the respiration depth information includes numerical information indicating the relative magnitude of the second amplitudes A21 to A29 with respect to the first amplitude A1. Therefore, by using the numerical information, medical personnel can know the state of the respiration depth of the subject P from the numerical information as well, and can grasp it more objectively and easily.

[0065] Moreover, according to the above-mentioned configuration, the display data is generated so that the respiration depth information is displayed near the unit respiration waveforms 751 to 759. By visually checking the display screen based on such display data, the medical staff can easily recognize which part of the respiration waveform the respiration depth information corresponds to. In particular, when the display data is generated so that the respiration depth information is displayed near the peaks of the unit respiration waveforms 751 to 759, the medical staff can more easily recognize which part of the respiration waveform the respiration depth information corresponds to.

[0066] Moreover, according to the above-mentioned configuration, the respiration depth information is generated so as to be displayed in association with each of the unit respiration waveforms 751 to 759. By visually checking the display screen based on such display data, a medical professional can grasp the depth of each breath of the subject at the given time at a glance.

[0067] Furthermore, according to the above-mentioned configuration, the control unit 5 generates aggregate information on the breathing depth of the subject P at a given time based on a plurality of pieces of breathing depth information continuously generated at the given time. Therefore, for example, a medical professional can easily grasp an outline of the breathing depth of the subject P at the given time by using the aggregate information.

[0068] Furthermore, according to the above configuration, the control unit 5 generates, as the display data, either the first display data in which the inhalation pressure is higher than the exhalation pressure in the respiratory waveform, or the second display data in which the exhalation pressure is higher than the inhalation pressure in the respiratory waveform. Therefore, the information generating device 1 can provide a display mode of the respiratory waveform according to the preference of a medical professional who visually checks the respiratory waveform.

[0069] Furthermore, according to the above configuration, the information generating device 1 includes the display unit 7 for displaying the respiratory waveform data and the respiratory depth information. Therefore, according to the information generating device 1, even if there is no external device 20 for displaying the respiratory waveform data and the respiratory depth information, the medical staff can visually recognize the respiratory waveform data and the respiratory depth information.

[0070] Furthermore, according to the above configuration, the control unit 5 generates a notification signal for notifying the state of the depth of breathing based on the breathing depth information. Therefore, according to the information generating device 1, for example, when the depth of breathing of the subject P is poor, the medical staff is notified of this. As a result, the medical staff can immediately grasp the state of the depth of breathing of the subject P, and therefore can immediately take appropriate measures for the subject P when the depth of breathing of the subject is poor.

[0071] (Modification of the first embodiment) Next, a modified example of the first embodiment will be described with reference to FIG. 7. This modified example differs from the first embodiment in that markers M7-M9 (classification information) and relative values ​​X7-X9 (numerical information) are displayed at any of the positions indicated by the dashed lines in FIG. 7. That is, this modified example differs from the first embodiment in that respiration depth information is displayed near the unit respiration waveform. The vicinity of the unit respiration waveform is, for example, the areas R1-R3 surrounded by the dashed line in FIG. 7. That is, the vicinity of the unit respiration waveform is the rising or falling position of the unit respiration waveform, above or below the peak in the unit respiration waveform, etc.

[0072] In this modified example as well, since the breathing depth information is located in the vicinity of the unit breathing waveform, medical personnel can easily recognize which part of the breathing waveform the breathing depth information corresponds to.

[0073] Second Embodiment Next, the second embodiment will be described with reference to FIG. 8. This embodiment is different from the first embodiment in that the respiration depth information is generated for each data set including three consecutive unit respiration waveforms. In other words, the respiration depth information generated in this embodiment indicates the depth of three consecutive respirations by the subject P as one piece of information (for example, the average value, maximum value, minimum value, etc. of the relative values ​​corresponding to the three consecutive respirations). Note that the data set only needs to include two or more consecutive unit respiration waveforms, and the number of unit respiration waveforms included in the data set is not limited to three. In addition, in the description of this embodiment, the description of parts that overlap with the description of the first embodiment will be omitted as appropriate.

[0074] For example, at 18:10, the control unit 5 calculates the relative values ​​X7 to X9 according to the same principle as in the first embodiment. After calculating the relative values ​​X7 to X9, the control unit 5 calculates, for example, an average value X10 of the relative values ​​X7 to X9, and classifies the state of the depth of breathing of the subject P based on the calculated average value X10 and the classification standard information. In this embodiment, the relative value X7 is 20%, the relative value X8 is 16%, and the relative value X9 is 15% (see FIG. 6), so that the average value X10 of the relative values ​​X7 to X9 is 17%. Therefore, the control unit 5 classifies the state of the depth of breathing of the subject P corresponding to the data set including the unit respiratory waveforms 757 to 759 as "dangerous" and generates classification information corresponding to the classification.

[0075] When the control unit 5 classifies the state of the depth of breathing of the subject P corresponding to the data set including the unit respiratory waveforms 757-759, it generates respiratory depth information indicating the state of the depth of breathing, and generates first display data based on the generated respiratory depth information. In this embodiment, the display screen based on the first display data generated is the display screen illustrated in FIG. 8. As illustrated in FIG. 8, the unit respiratory waveforms 757-759 are surrounded by a rectangular frame F1. The left side F11 of the frame F1 passes through the rising position of the unit respiratory waveform 757, and the right side F12 of the frame F1 passes through the falling position of the unit respiratory waveform 759.

[0076] The shape of the frame line F1 can be changed according to the classified state. For example, the frame line F1 may be set so that the thicker the state of the breathing depth is poor, or a color according to the classified state may be applied. A marker M10 (classification information) hatched with diagonal lines representing "danger" and an average value X10 (numerical information) are displayed on the upper outer side of the frame line F1. The relative value X10 is displayed near the left side of the marker M10. The marker M10 and the average value X10 may be displayed inside the frame line F1, or may be displayed near the left and right sides of the frame line F1.

[0077] According to the above-mentioned configuration, a medical professional can visually recognize the depth of a plurality of breaths collectively as a single piece of information by visually checking the display screen.

[0078] The above-described embodiment is for the purpose of facilitating understanding of the present invention, and is not intended to limit the present invention. The present invention can be modified and improved without departing from the spirit and scope of the present invention.

[0079] In the above embodiment, the control unit 5 generates the respiration depth information based on the relative values ​​X1 to X9 calculated by comparing the first amplitude A1 with the second amplitudes A21 to A29, but this embodiment is not limited to this. For example, the control unit 5 may generate the respiration depth information based on the similarity between the reference respiration waveform 74 and the respiration waveform 75 calculated by comparing both waveforms.

[0080] In the above embodiment, the information generating device 1 does not include the pressure sensor 10, but the acquiring unit 2 of the information generating device 1 may include a pressure sensor having a similar configuration to the pressure sensor 10. In this case, the acquiring unit 2 detects at least one of the respiratory gases from inside the mouth or inside the nose of the subject P, and acquires respiratory waveform data related to the respiratory pressure of the subject P based on the detected respiratory gas.

[0081] In the above embodiment, the information generating device 1 includes the storage unit 4, but the information generating device 1 does not necessarily need to include the storage unit 4. In this case, the memory 51 of the control unit 5 functions as the storage unit.

[0082] In the above embodiment, the first value is the first amplitude A1 of the first respiratory waveform included in the respiratory reference waveform data, and the second value is the second amplitude A21-A29 of the second respiratory waveform included in the respiratory waveform data, but this embodiment is not limited to this. For example, the first value may be the maximum respiratory pressure in the entire respiratory reference waveform, and the second value may be the maximum respiratory pressure in the entire respiratory waveform. Also, the first value may be the value of the average respiratory pressure in the first respiratory waveform from the start of breathing until a predetermined time has elapsed, and the second value may be the value of the average respiratory pressure in the second respiratory waveform from the start of breathing until a predetermined time has elapsed. Furthermore, the first value may be the value of the maximum respiratory pressure in the first respiratory waveform from the start of breathing until a predetermined time has elapsed, and the second value may be the value of the maximum respiratory pressure in the second respiratory waveform from the start of breathing until a predetermined time has elapsed. Also, the first value may be the value of the average respiratory pressure from the rise to the peak of the first respiratory waveform, and the second value may be the value of the average respiratory pressure from the rise to the peak of the second respiratory waveform.

[0083] In the above embodiment, the display unit 7 displays markers as classification information, but, for example, character information indicating the state of the breathing depth of the subject P may be displayed as classification information. Also, instead of markers, the state of the breathing depth of the subject P may be indicated by changing the thickness of the unit breathing waveform based on the state of the breathing depth of the subject P. In this case, the thickness of the unit breathing waveform corresponds to the classification information.

[0084] In the above embodiment, the display unit 7 displays the relative values ​​as numerical information, but may display levels from 1 to 5 corresponding to the calculated relative values. Note that the number of levels is not limited to 5, and may be any number greater than or equal to 2.

[0085] In the above embodiment, the display unit 7 displays the markers and the relative values, but either the markers or the relative values ​​may not be displayed on the display unit 7. In other words, the breathing depth information may include only either the classification information or the numerical value information.

[0086] In the above embodiment, the identification markers S1 to S3 and the accumulated number information are displayed on the display unit at 18:10. However, the identification markers S1 to S3 and the accumulated number information do not have to be displayed on the display unit .

[0087] In the above embodiment, each classification representing the state of breathing depth is distinguished by applying different hatching to the identification marks S1-S3 and the markers M1-M10, but this embodiment is not limited to this. Each classification may be distinguished, for example, by applying different colors to the identification marks S1-S3 and the markers M1-M10, or by making the identification marks S1-S3 and the markers M1-M10 into different shapes. Each classification may also be distinguished by applying different colors to the background of each unit respiratory waveform or each unit respiratory waveform based on classification information.

[0088] In the above embodiment, an example is described in which biological information including respiratory waveform data is acquired from a subject P who is administered an anesthetic during surgery before and after surgery, but the present embodiment is not limited to this example. For example, the present invention is also applicable to an example in which the breathing of the subject P changes from tachypnea to hypopnea.

[0089] In the above embodiment, the state of the depth of breathing is classified as "normal, caution, danger", but may be classified as "level 1, level 2, level 3".

[0090] In the above embodiment, the state of the depth of breathing is classified into three states, "normal", "caution", and "danger", but it may be classified into two or four or more states.

[0091] In the above embodiment, the relative value is displayed near the left side of the marker, but it may be displayed near the top or right side of the marker.

[0092] In the above embodiment, the display unit 7 displays the reference respiratory waveform 74, but the reference respiratory waveform 74 does not have to be displayed. In other words, the control unit 5 may generate display data that does not include reference respiratory waveform data.

[0093] In the above embodiment, the control unit 5 generates the respiration depth information by comparing the respiration reference waveform 74 and the respiration waveform 75, and then generates display data for displaying the respiration waveform data and the respiration depth information. However, for example, the control unit 5 may be configured to generate display data for displaying the preset respiration reference waveform data and the respiration waveform data acquired by the acquisition unit 2 without generating the respiration depth information. In this case, the control unit 5 displays a display screen on which the respiration reference waveform 74 and the respiration waveform 75 are displayed on the display unit 7 or the display unit of the external device 20 based on the generated display data. Even when the control unit 5 generates the respiration depth information, the control unit 5 may be configured to generate display data that does not include the respiration depth information in response to a setting operation by the user. [Explanation of symbols]

[0094] 1: information generating device, 2: acquisition unit, 3: operation unit, 4: storage unit, 5: control unit, 6: output interface, 7: display unit, 8: notification unit, 9: bus, 10: pressure sensor, 20: external device, 51: memory, 52: processor

Claims

1. an acquisition unit configured to acquire respiratory waveform data relating to a respiratory pressure of the subject; a control unit configured to generate breathing depth information indicating a breathing depth of the respiratory waveform data relative to the respiratory reference waveform data by comparing the respiratory waveform data acquired by the acquisition unit with preset respiratory reference waveform data, The control unit is configured to generate cumulative number information indicating a cumulative number of hits for each classification regarding the subject's breathing depth during a specified time based on a plurality of pieces of breathing depth information generated continuously during the specified time.

2. an acquisition unit configured to acquire respiratory waveform data relating to a respiratory pressure of the subject; a control unit configured to generate breathing depth information indicating a breathing depth of the respiratory waveform data relative to the respiratory reference waveform data by comparing the respiratory waveform data acquired by the acquisition unit with preset respiratory reference waveform data, the respiratory reference waveform data includes a first respiratory waveform having a first amplitude; the respiratory waveform data includes a second respiratory waveform having a second amplitude; The information generating device, wherein the control unit is configured to generate display data for displaying the first respiratory waveform and the second respiratory waveform side by side.

3. the respiratory reference waveform data includes a first respiratory waveform having a first amplitude; the respiratory waveform data includes a second respiratory waveform having a second amplitude; the first amplitude is determined based on a peak expiratory pressure in the first respiratory waveform and a peak inspiratory pressure in the first respiratory waveform; the second amplitude is determined based on a peak expiratory pressure in the second respiratory waveform and a peak inspiratory pressure in the second respiratory waveform; The information generating device according to claim 1 , wherein the control unit generates the respiration depth information by comparing the first amplitude with the second amplitude.

4. 4. The information generating device according to claim 1, wherein the breathing depth information includes classification information according to a relative magnitude of a second value indicating the breathing pressure based on the breathing waveform data to a first value indicating the breathing pressure based on the reference breathing waveform data.

5. 5. The information generating device according to claim 1, wherein the respiratory depth information includes numerical information indicating a relative magnitude of a second value indicating the respiratory pressure based on the respiratory waveform data to a first value indicating the respiratory pressure based on the respiratory reference waveform data.

6. the control unit is configured to generate display data for displaying the respiratory waveform data and the respiratory depth information, The respiratory waveform based on the respiratory waveform data includes at least one unit respiratory waveform corresponding to one breath by the subject, The information generating device according to claim 1 , wherein the display data is generated such that the respiratory depth information is displayed in the vicinity of the unit respiratory waveform.

7. 3. The information generating device according to claim 2, wherein the control unit is configured to generate aggregate information regarding the breathing depth of the subject at a predetermined time based on a plurality of pieces of breathing depth information generated continuously at the predetermined time.

8. the control unit is configured to generate display data for displaying the respiratory waveform data and the respiratory depth information, An information generating device as described in any one of claims 1 to 7, wherein the control unit is configured to generate, as the display data, either first display data in which the inhalation pressure is higher than the exhalation pressure in a respiratory waveform based on the respiratory waveform data, or second display data in which the exhalation pressure is higher than the inhalation pressure in the respiratory waveform.

9. The information generating device includes a display unit, 9. The information generating device according to claim 1, wherein the control unit is configured to generate display data for displaying the respiratory waveform data and the respiratory depth information on the display unit.

10. The information generating device according to claim 1 , wherein the control unit is configured to generate an alarm signal for notifying a state of the breathing depth of the subject based on at least the breathing depth information.

11. acquiring respiratory waveform data relating to the subject's respiratory pressure; generating breathing depth information indicating a breathing depth of the respiratory waveform data relative to the respiratory reference waveform data by comparing the acquired respiratory waveform data with preset respiratory reference waveform data; and generating cumulative number information indicating a cumulative number of occurrences for each classification related to the subject's breathing depth during a specified time period based on a plurality of pieces of breathing depth information continuously generated during the specified time period, the cumulative number of occurrences being determined by an information generating device.

12. acquiring respiratory waveform data relating to the subject's respiratory pressure; generating breathing depth information indicating a breathing depth of the respiratory waveform data relative to the respiratory reference waveform data by comparing the acquired respiratory waveform data with preset respiratory reference waveform data; generating display data, the respiratory reference waveform data includes a first respiratory waveform having a first amplitude; the respiratory waveform data includes a second respiratory waveform having a second amplitude; An information generating method, in which in the step of generating display data, the display data is generated for displaying the first respiratory waveform and the second respiratory waveform side by side.

13. A function for acquiring respiratory waveform data relating to the subject's respiratory pressure; A function of generating breathing depth information indicating a breathing depth of the respiratory waveform data relative to the respiratory reference waveform data by comparing the acquired respiratory waveform data with preset respiratory reference waveform data; and generating cumulative number information indicating the cumulative number of occurrences for each classification related to the subject's breathing depth during a specified period of time based on a plurality of pieces of breathing depth information generated continuously during the specified period of time.

14. A function for acquiring respiratory waveform data relating to the subject's respiratory pressure; A function of generating breathing depth information indicating a breathing depth of the respiratory waveform data relative to the respiratory reference waveform data by comparing the acquired respiratory waveform data with preset respiratory reference waveform data; a computer program for causing a computer to realize the function of generating display data; the respiratory reference waveform data includes a first respiratory waveform having a first amplitude; the respiratory waveform data includes a second respiratory waveform having a second amplitude; A computer program that generates the display data for displaying the first respiratory waveform and the second respiratory waveform side by side.

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