Vital information measuring device and method for controlling the same

Abstract

This living body information measuring instrument is provided with: a blood pressure measurement unit that measures the blood pressure of a subject and has a blood pressure measurement control unit for controlling a cuff for compressing a measurement site of the subject, a pump for supplying a gas into the cuff, an exhaust valve for controlling discharge of the gas from the inside of the cuff, and a pressure detection unit for detecting a cuff pressure, which is the pressure in the cuff; and an electrocardiographic measurement unit that comprises electrodes disposed on the measurement site side of the cuff, and measures an electrocardiographic waveform by processing an electric signal acquired through a plurality of electrodes that can be brought into contact with the skin of the subject. The blood pressure measurement control unit performs: compression control of increasing the cuff pressure by supplying the gas into the cuff from the pump; and decompression control of rapidly reducing the cuff pressure by opening the exhaust valve. When the electrocardiographic measurement unit is continuing to measure the electrocardiographic waveform at the completion of the compression control, the cuff pressure is maintained constant or gradually changed before the decompression control is performed.

Description

[Technical field]

[0001] The present invention relates to a biological information measuring device and a control method for a biological information measuring device. [Background technology]

[0002] As a conventional biological information measuring device for simultaneously measuring blood pressure and electrocardiogram waveform, a configuration including a housing and a cuff with electrodes attached to the cuff, as shown in Patent Document 1, has been proposed. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2014-36843 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in such a configuration in which the contact condition of the electrodes is stabilized by inflating the cuff, there is a problem in that if the condition of the cuff changes suddenly during electrocardiogram waveform measurement, for example due to the end of blood pressure measurement, significant noise will be generated in the electrocardiogram waveform due to the sudden change in the contact condition of the electrodes.

[0005] In view of the above-mentioned problems, the present invention aims to provide a technique for performing stable measurement of an electrocardiogram waveform in a biological information measurement device that simultaneously measures blood pressure and an electrocardiogram waveform. [Means for solving the problem]

[0006] In order to solve the above problems, the present invention provides a blood pressure measurement unit that has a blood pressure measurement control unit that controls a cuff that presses against a measurement site of a subject, a pump that supplies gas into the cuff, an exhaust valve that adjusts the exhaust of the gas from inside the cuff, and a pressure detection unit that detects a cuff pressure that is the pressure inside the cuff, and measures the blood pressure of the subject; an electrocardiogram measuring unit that processes an electrical signal acquired through a plurality of electrodes that can be brought into contact with the skin of the subject to measure an electrocardiogram waveform; A biological information measuring device comprising: The blood pressure measurement control unit is a pressurization control for supplying the gas from the pump to the cuff to increase the cuff pressure; a decompression control for rapidly reducing the cuff pressure by opening the exhaust valve; Run When the pressurization control is terminated, if the electrocardiogram measurement unit continues to measure the electrocardiogram waveform, the cuff pressure is maintained constant or gradually changed before the depressurization control is executed.

[0007] In the present invention, in a biological information measuring device having a blood pressure measuring unit and an electrocardiogram measuring unit, in which a plurality of electrodes for measuring an electrocardiogram waveform include electrodes provided on the measurement site side of a cuff, when the blood pressure measurement control unit executes pressurization control for supplying gas from a pump to the cuff to increase the cuff pressure and depressurization control for opening an exhaust valve to rapidly decrease the cuff pressure, if the electrocardiogram measuring unit is continuing to measure an electrocardiogram waveform at the end of pressurization control, the cuff pressure is kept constant or gradually changed before depressurization control is executed. This prevents a sudden change in the cuff pressure during measurement of the electrocardiogram waveform, allowing a stable measurement of the electrocardiogram waveform.

[0008] In the present invention, The blood pressure measurement control unit is If the electrocardiogram measurement unit continues to measure the electrocardiogram waveform when the inflation control is terminated, before executing the depressurization control, the pump may be controlled so that the cuff pressure increases more slowly than the rate of increase at the time of the inflation control is terminated, or the exhaust valve may be controlled so that the cuff pressure decreases more slowly than the rate of decrease during the depressurization control.

[0009] According to this, when the pressurization control is ended, if the electrocardiogram measurement unit continues to measure the electrocardiogram waveform, the cuff pressure can be changed gradually by controlling the pump to increase the cuff pressure more slowly than the increasing speed of the cuff pressure at the end of the pressurization control before executing the depressurization control. As a result, the cuff pressure does not change suddenly during the measurement of the electrocardiogram waveform, so that a stable measurement of the electrocardiogram waveform can be performed. Also, when the pressurization control is ended, if the electrocardiogram measurement unit continues to measure the electrocardiogram waveform, the cuff pressure can be changed gradually by controlling the exhaust valve to decrease the cuff pressure more slowly than the decreasing speed of the cuff pressure during the depressurization control before executing the depressurization control. As a result, the cuff pressure does not change suddenly during the measurement of the electrocardiogram waveform, so that a stable measurement of the electrocardiogram waveform can be performed.

[0010] In the present invention, When the blood pressure measurement control unit detects an abnormality, The blood pressure measurement control unit stops the pressurization control and executes the depressurization control, The electrocardiogram measurement section may terminate measurement of the electrocardiogram waveform.

[0011] According to this, when the blood pressure measurement control unit detects an abnormality, the blood pressure measurement control unit stops pressurization control and executes depressurization control, so that when there is an abnormality in the blood pressure measurement, the measurement site of the subject is not further compressed by the cuff, and the burden on the subject is reduced. Meanwhile, the electrocardiogram measurement unit ends measurement of the electrocardiogram waveform, so that measurement of an unstable electrocardiogram waveform including noise generated by a rapid decrease in cuff pressure is not performed.

[0012] In the present invention, When the electrocardiogram measurement unit detects an abnormality before the end of the pressurization control, The electrocardiogram measurement unit finishes measuring the electrocardiogram waveform, The blood pressure measurement control unit may continue to execute the pressurization control.

[0013] According to this, if the electrocardiogram measurement unit detects an abnormality before the end of the pressurization control, the electrocardiogram measurement unit ends the measurement of the electrocardiogram waveform, so there is no need to continue measuring the inaccurate electrocardiogram waveform. On the other hand, even if the measurement of the electrocardiogram waveform is ended, this generally does not affect the blood pressure measurement, so the execution of the pressurization control can be continued for the blood pressure measurement, and normal blood pressure measurement can be performed.

[0014] In the present invention, A display unit for displaying information; A display control unit that controls the display unit; Equipped with The display control unit may be configured to cause the display unit to display a message indicating that the blood pressure measurement is abnormal.

[0015] According to this, when the blood pressure measurement control unit detects an abnormality, the pressure increase control is stopped, the pressure decrease control is executed, and the measurement of the electrocardiogram waveform is terminated. ,blood By displaying on the display unit that there was an abnormality in the blood pressure measurement, it is possible to inform the subject that the blood pressure measurement has ended abnormally. It is also possible to display that there was an abnormality in the blood pressure measurement and that the measurement of the electrocardiogram waveform has ended.

[0016] In the present invention, A display unit for displaying information; A display control unit that controls the display unit; Equipped with The display control unit may be configured to, after the blood pressure measurement is completed, display on the display unit a message indicating that the electrocardiogram waveform measurement was abnormal.

[0017] According to this, when the electrocardiogram measurement unit detects an abnormality, the measurement of the electrocardiogram waveform is terminated but the blood pressure measurement is continued, so if the display unit displays that there was an abnormality in the electrocardiogram measurement during blood pressure measurement, the subject may take an action that affects the blood pressure measurement, such as changing his / her posture, which would hinder accurate blood pressure measurement. Therefore, by displaying that there was an abnormality in the measurement of the electrocardiogram waveform on the display unit after the blood pressure measurement is completed, normal blood pressure measurement is possible.

[0018] The present invention also provides a method for producing a method for manufacturing a semiconductor device comprising the steps of: A cuff that presses against the subject's measurement site; A pump for supplying gas into the cuff; an exhaust valve for adjusting the exhaust of the gas from within the cuff; A blood pressure measurement unit for measuring blood pressure; an electrocardiogram measuring unit that processes an electrical signal acquired through a plurality of electrodes that can be brought into contact with the skin of the subject to measure an electrocardiogram waveform; A control method for a biological information measuring device comprising: a pressurizing step of supplying the gas from the pump to the cuff to increase a cuff pressure, which is a pressure inside the cuff; a decompression step of opening the exhaust valve to rapidly reduce the cuff pressure; Including, When the pressurization step is completed, if the measurement of the electrocardiogram waveform is continuing, the method further includes a step of maintaining the cuff pressure constant or slowly changing the cuff pressure before the depressurization step.

[0019] The present invention relates to a method for controlling a biological information measuring device having a blood pressure measuring section and an electrocardiogram measuring section, and including a plurality of electrodes for measuring an electrocardiogram waveform provided on the measurement site side of a cuff, the method including a pressurizing step of increasing the cuff pressure by supplying gas from a pump to the cuff, and a depressurizing step of rapidly decreasing the cuff pressure by opening an exhaust valve, and a step of maintaining the cuff pressure constant or slowly changing it before the depressurizing step if the measurement of the electrocardiogram waveform is continuing at the end of the pressurizing step. This prevents the cuff pressure from changing suddenly during the measurement of the electrocardiogram waveform, and allows for stable measurement of the electrocardiogram waveform.

[0020] In the present invention, If measurement of the electrocardiogram waveform is continuing at the end of the pressurization step, the pump may be controlled before the depressurization step so that the cuff pressure increases more slowly than the rate at which it increases at the end of the pressurization step, or the exhaust valve may be controlled so that the cuff pressure decreases more slowly than the rate at which it decreases in the depressurization step.

[0021] According to this, when the measurement of the electrocardiogram waveform is continued at the end of the pressurization step, the cuff pressure can be changed gradually by controlling the pump before the depressurization step so that the cuff pressure increases more slowly than the increasing rate of the cuff pressure at the end of the pressurization step. As a result, the cuff pressure does not change suddenly during the measurement of the electrocardiogram waveform, so that a stable measurement of the electrocardiogram waveform can be performed. Also, when the measurement of the electrocardiogram waveform is continued at the end of the pressurization step, the cuff pressure can be changed gradually by controlling the exhaust valve before the depressurization step so that the cuff pressure decreases more slowly than the decreasing rate of the cuff pressure in the depressurization step. As a result, the cuff pressure does not change suddenly during the measurement of the electrocardiogram waveform, so that a stable measurement of the electrocardiogram waveform can be performed.

[0022] In the present invention, When the blood pressure measurement unit detects an abnormality, The pressurization step is stopped and the depressurization step is carried out; The measurement of the electrocardiogram waveform may be terminated.

[0023] According to this, when the blood pressure measurement unit detects an abnormality, the blood pressure measurement unit stops the pressurization step and executes the depressurization step, so that when an abnormality occurs in the blood pressure measurement, the measurement site of the subject is not further compressed by the cuff, and the burden on the subject is reduced. Meanwhile, the electrocardiogram measurement unit ends the measurement of the electrocardiogram waveform, so that an unstable electrocardiogram waveform including noise generated by a rapid decrease in cuff pressure is not measured.

[0024] In the present invention, If the electrocardiogram measuring unit detects an abnormality before the pressurizing step is completed, Stopping the measurement of the electrocardiogram waveform; The pressurizing step may be continued.

[0025] According to this, if the electrocardiogram measuring unit detects an abnormality before the end of the pressurizing step, the electrocardiogram measuring unit ends the measurement of the electrocardiogram waveform, so there is no need to continue the measurement of the inaccurate electrocardiogram waveform. On the other hand, even if the measurement of the electrocardiogram waveform is ended, this generally does not affect the blood pressure measurement, so the pressurizing step can be continued for blood pressure measurement, and normal blood pressure measurement can be performed. Effect of the Invention

[0026] According to the present invention, it is possible to provide a technique for performing stable measurement of an electrocardiogram waveform in a biological information measurement device that simultaneously measures blood pressure and an electrocardiogram waveform. [Brief description of the drawings]

[0027] [Figure 1] FIG. 1 is a functional block diagram of a biological information measuring device according to a first embodiment. [Diagram 2] FIG. 2 is a diagram showing the progress of blood pressure measurement and electrocardiogram measurement and the change over time of cuff pressure in a biological information measurement device according to a conventional example. [Diagram 3] FIG. 3 is a flowchart showing the procedure for measuring blood pressure and electrocardiogram in a biological information measuring device according to a conventional example. [Figure 4] FIG. 4 is a diagram showing the progress of blood pressure measurement and electrocardiogram measurement and the change over time of the cuff pressure in the biological information measurement device according to the first embodiment. [Diagram 5] FIG. 5 is a flowchart illustrating a procedure of blood pressure measurement and electrocardiogram measurement by the biological information measurement device according to the first embodiment. [Figure 6] FIG. 6 is a diagram showing the progress of blood pressure measurement and electrocardiogram measurement and the change over time of the cuff pressure in the biological information measurement device according to the second embodiment. [Figure 7] FIG. 7 is a flowchart illustrating a procedure of blood pressure measurement and electrocardiogram measurement by the biological information measurement device according to the second embodiment. [Figure 8] FIG. 8 is a diagram showing the progress of blood pressure measurement and electrocardiogram measurement and the change over time of the cuff pressure in the biological information measurement device according to the third embodiment. [Figure 9] FIG. 9 is a flowchart illustrating a procedure of blood pressure measurement and electrocardiogram measurement by the biological information measurement device according to the third embodiment. [Figure 10] FIG. 10 is a diagram showing the progress of blood pressure measurement and electrocardiogram measurement and the change over time of the cuff pressure in the biological information measurement device according to the fourth embodiment. [Figure 11] FIG. 11 is a flowchart showing a procedure of blood pressure measurement and electrocardiogram measurement by the biological information measurement device according to the fourth embodiment. [Figure 12] FIG. 12 is a diagram showing the progress of blood pressure measurement and electrocardiogram measurement and the change over time of the cuff pressure in the biological information measurement device according to the fifth embodiment. [Figure 13] FIG. 13 is a flowchart illustrating a procedure of blood pressure measurement and electrocardiogram measurement by the biological information measurement device according to the fifth embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0028] Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. However, unless otherwise specified, the dimensions, materials, shapes, relative positions, etc. of the components described in the examples are not intended to limit the scope of the present invention to those.

[0029] <Example 1> A first embodiment of the present invention will be described below.

[0030] (Configuration of Biological Information Measurement Device) Figure 1 shows the results of this experiment. For example: 1 is a block diagram showing a schematic configuration of a biological information measuring device 100. The biological information measuring device 100 is mainly composed of a main body housing 110, a cuff assembly 120, and a belt portion .

[0031] The main body housing 110 includes a display unit 111 , a power supply unit 112 , a blood pressure measuring unit 113 , and an electrocardiogram measuring unit 114 .

[0032] The display unit 111 displays various information including guidance to the user when performing blood pressure measurement and electrocardiogram waveform measurement (hereinafter also referred to as "electrocardiogram measurement"), and information related to the measurement state and measurement results.

[0033] The power supply unit 112 supplies power to the blood pressure measurement unit 113 and the electrocardiogram measurement unit 114, and is constituted by, for example, a secondary battery.

[0034] The blood pressure measurement unit 113 performs blood pressure measurement together with the cuff assembly unit 120. The blood pressure measurement unit 113 includes a control unit 1131, a calculation unit 1132, a pressure detection unit 1133, a pump 1134, and an exhaust valve 1135. The control unit 1131 has a function of managing the blood pressure measurement operation by the blood pressure measurement unit 113, and is configured to include, for example, a CPU and a memory, and executes a control program stored in the memory to realize the blood pressure measurement operation by controlling the pressure detection unit 1133, the pump 1134, the exhaust valve 1135, the display unit 111, and the like. A part or all of the control unit 1131 may be realized by a hardware circuit such as an ASIC or an FPGA. The calculation unit 1132 has a function of executing calculation processing required for blood pressure measurement, and is configured to include, for example, a CPU and a memory, and executes a calculation program stored in the memory. Pump 1134 supplies gas (e.g., air) into cuff 1202, which will be described later, and exhaust valve 1135 is a valve that adjusts the discharge of gas from inside cuff 1202. Blood pressure measurement unit 113 corresponds to the blood pressure measurement unit of the present invention. Here, the blood pressure measurement control unit of the present invention is configured to include control unit 1131.

[0035] The electrocardiogram measurement unit 114 includes a control unit 1141 and a calculation unit 1142. The control unit 1141 has a function of controlling the electrocardiogram measurement operation by the electrocardiogram measurement unit 114, and is configured to include, for example, a CPU and a memory, and executes a control program stored in the memory to realize electrocardiogram measurement via the first electrode 1203, the second electrode 1204, and the third electrode 115. The control unit 1141 includes known components such as an amplifier for processing the electric signals detected by the first electrode 1203, the second electrode 1204, and the third electrode 115, and an AD converter. The calculation unit 1142 has a function of executing calculation processing required for electrocardiogram measurement, and is configured to include, for example, a CPU and a memory, and executes a calculation program stored in the memory. The electrocardiogram measurement unit 114 corresponds to the electrocardiogram measurement unit of the present invention. The first electrode 1203, the second electrode 1204, and the third electrode 115 correspond to a plurality of electrodes that can be contacted with the skin of the subject of the present invention.

[0036] The cuff assembly 120 includes a curler 1201, a cuff 1202, a first electrode 1203, and a second electrode 1204. The cuff assembly 120 is an assembly including the cuff 1202. The cuff 1202 is a belt-shaped member and has a bag-shaped body inside. The curler 1201 is a plate-shaped resin member curved in the longitudinal direction so as to surround a measurement site such as a wrist in the circumferential direction. The cuff 1202 is attached to the inner circumferential side of the curler 1201, and the curler 1201 functions as a base for holding the cuff 1202. The first electrode 1203 and the second electrode 1204 are arranged on the inner circumferential side of the cuff 1202. An appropriate part such as the wrist or the upper arm can be selected as the measurement site.

[0037] The belt portion 130 is a belt-shaped member, and the curler 1201 is attached to the inner periphery of the belt portion 130. The belt portion 130 is wrapped around the subject's wrist or the like, and is adjusted appropriately according to the thickness of the subject's wrist or the like. of The length is adjusted and fixed by a fastening means such as a buckle or hook-and-loop fastener.

[0038] The third electrode 115 is electrically connected to the control unit 1141 of the electrocardiogram measurement unit 114 together with the first electrode 1203 and the second electrode 1204. The third electrode 115 is arranged at a position where the subject can contact with a part of the body so that an electrocardiogram waveform such as V1 lead of the subject can be detected together with the first electrode 1203 and the second electrode 1204 that contact the subject's wrist or the like. For example, when the belt unit 130 is worn on the left wrist of the subject, the third electrode 115 can be provided on the side of the main body housing 110 that the subject can contact with the fingers of the right hand. In this way, the electrocardiogram waveform of I lead can be detected by the first electrode 1203, the second electrode 1204 and the third electrode 115. The position where the third electrode 115 is provided is not limited to this.

[0039] In the biological information measuring device according to the present embodiment, blood pressure and electrocardiogram waveforms are measured in parallel. To obtain a stable electrocardiogram waveform, it is necessary to continuously measure the electrocardiogram waveform for a period of about 30 seconds. In contrast, although the length of time varies depending on the subject's physique and the capacity of the pump, blood pressure measurement can generally be completed in a period shorter than 30 seconds. For this reason, when blood pressure measurement and electrocardiogram measurement are started simultaneously, blood pressure measurement may be completed before electrocardiogram measurement.

[0040] FIG. 2 shows the progress from the start of blood pressure measurement and electrocardiogram measurement, and the change in cuff pressure over time. FIG. 3 is a flowchart showing a general procedure for blood pressure measurement and electrocardiogram measurement. As shown in FIG. 3, blood pressure measurement is started (step S101) and electrocardiogram measurement is started at the same time (step S201). When blood pressure measurement is started, the control unit 1131 closes the exhaust valve 1135 (step S102), drives the pump 1134 (step S103), and pumps air into the cuff 1202 to pressurize it. On the other hand, when electrocardiogram measurement is started, the control unit 1141 continues the electrocardiogram measurement for a predetermined time (step S202). The blood pressure measurement unit 113 measures blood pressure by the oscillometric method. That is, the pressure detection unit 1133 detects the cuff pressure and the pulse wave superimposed thereon, and the calculation unit 1132 performs a predetermined process on the information on the pulse wave to calculate blood pressure (diastolic blood pressure and systolic blood pressure). When the calculation of blood pressure is completed (step S104), the blood pressure measurement is ended (step S105). When the blood pressure measurement is completed, the control unit 1131 stops the pump 1134 (step S106) and opens the exhaust valve 1135 (step S108). On the other hand, when the electrocardiogram measurement unit 114 measures the electrocardiogram waveform for a predetermined period of time, the control unit 1141 ends the electrocardiogram measurement (step S203).

[0041] 2, the cuff pressure gradually increases from time T0 when blood pressure measurement and electrocardiogram measurement start. Then, at time Tp when blood pressure measurement ends, the pump 1134 is stopped and the exhaust valve 1135 is opened. This causes the air in the cuff 1202 to be rapidly discharged, causing a sudden change in the contact state between the first electrode 1203 and the second electrode 1204 provided on the inner periphery of the cuff 1202, generating noise Ns in the electrocardiogram waveform.

[0042] Fig. 4 shows the progress from the start of blood pressure measurement and electrocardiogram measurement in the biological information measurement device 100 according to Example 1, and the change in cuff pressure over time. Fig. 5 shows the procedure of blood pressure measurement and electrocardiogram measurement as a control method of the biological information measurement device 100 according to Example 1.

[0043] As shown in FIG. 5, blood pressure measurement is started (step S101) and electrocardiogram measurement is started at the same time (step S201). When blood pressure measurement is started, the control unit 1131 closes the exhaust valve 1135 (step S102), drives the pump 1134 (step S103), and pumps air into the cuff 1202 to pressurize it. On the other hand, when electrocardiogram measurement is started, the control unit 1141 continues electrocardiogram measurement for a predetermined time (step S202). In the blood pressure measurement unit 113, the pressure detection unit 1133 detects the cuff pressure and the pulse wave superimposed thereon by the oscillometric method, and the calculation unit 1132 performs a predetermined process on the information on the pulse wave to calculate blood pressure (diastolic blood pressure and systolic blood pressure). When the calculation of blood pressure is completed (step S104), the blood pressure measurement is ended (step S105). When the blood pressure measurement is ended, the control unit 1131 stops the pump 1134 (step S106). The control unit 1131 stops the pump 1134, but keeps the exhaust valve 1135 closed to keep the cuff pressure constant. On the other hand, when the electrocardiogram measurement unit 114 measures the electrocardiogram waveform for a predetermined time, the control unit 1141 ends the electrocardiogram measurement (step S203). The control unit 1131 stops the pump 1134 until the electrocardiogram measurement ends (if it is determined that the answer is No in step S107), and opens the exhaust valve 1135 when the electrocardiogram measurement ends (if it is determined that the answer is Yes in step S107) (step S108). The control unit 1131 of the blood pressure measurement unit 113 may wait for the electrocardiogram measurement period to elapse before opening the exhaust valve 1135, or may open the exhaust valve 1135 upon receiving a notification of the end of the electrocardiogram measurement from the control unit 1141 of the electrocardiogram measurement unit 114. Here, the control by the control unit 1131 from closing the exhaust valve 1135 (step S102) and driving the pump 1134 (step S103) to stopping the pump (step S106) corresponds to the pressurization control and pressurization step of the present invention. And the opening of the exhaust valve 1135 by the control unit 1131 (step S108) corresponds to the depressurization control and depressurization step of the present invention.

[0044] 4, in the first embodiment, the cuff pressure increases from the start time T0 of the blood pressure measurement to the end time Tp of the blood pressure measurement, and is kept constant by stopping the pump 1134 and stopping the pressurization at the end time Tp of the blood pressure measurement, and by maintaining the exhaust valve 1135 in a closed state. Then, the exhaust valve 1135 is opened at the end time Tc of the electrocardiogram measurement, and the cuff pressure is rapidly reduced.

[0045] In this way, in the biological information measuring device 100 of Example 1, even after the blood pressure measurement is completed and the cuff pressure is stopped, if the electrocardiogram measurement is continuing, the cuff pressure is kept constant, so that the contact state between the first electrode 1203 and the second electrode 1204 does not change suddenly, and the electrocardiogram measuring unit 114 can perform stable electrocardiogram measurement even after the blood pressure measurement is completed.

[0046] <Example 2> A biological information measuring device 200 according to a second embodiment of the present invention will be described below. Components common to the first embodiment will be denoted by common reference numerals and detailed descriptions thereof will be omitted. The components of the biological information measuring device 200 according to the second embodiment are common to the biological information measuring device 100 according to the first embodiment shown in FIG. 1, and therefore descriptions thereof will be omitted.

[0047] Fig. 6 shows the progress from the start of blood pressure measurement and electrocardiogram measurement in the biological information measurement device 200 according to Example 2, and the change over time of the cuff pressure. Fig. 7 shows the procedure of blood pressure measurement and electrocardiogram measurement as a control method of the biological information measurement device 200 according to Example 2.

[0048] As shown in FIG. 7, blood pressure measurement is started (step S101) and electrocardiogram measurement is started at the same time (step S201). When blood pressure measurement is started, the control unit 1131 closes the exhaust valve 1135 (step S102), drives the pump 1134 (step S103), and pumps air into the cuff 1202 to pressurize it. On the other hand, when electrocardiogram measurement is started, the control unit 1141 continues electrocardiogram measurement for a predetermined time (step S202). In the blood pressure measurement unit 113, the pressure detection unit 1133 detects the cuff pressure and the pulse wave superimposed thereon, and the calculation unit 1132 performs a predetermined process on the information on the pulse wave to calculate blood pressure (diastolic blood pressure and systolic blood pressure). When the calculation of blood pressure is completed (step S104), the blood pressure measurement is ended (step S105). When the blood pressure measurement is ended, the control unit 1131 stops the pump 1134 (step S106). The control unit 1131 stops the pump 1134, but controls the opening of the exhaust valve 1135 to slowly discharge the air in the cuff 1202 (step S121). On the other hand, when the electrocardiogram measurement unit 114 measures the electrocardiogram waveform for a predetermined time, the control unit 1141 ends the electrocardiogram measurement (step S203). The control unit 1131 controls the opening of the exhaust valve 1135 until the electrocardiogram measurement ends (if it is determined that the answer is No in step S122), and opens the exhaust valve 1135 when the electrocardiogram measurement ends (if it is determined that the answer is Yes in step S122) (step S108). The control unit 1131 of the blood pressure measurement unit 113 may wait for the electrocardiogram measurement period to elapse before opening the exhaust valve 1135, or may open the exhaust valve 1135 upon receiving a notification of the end of the electrocardiogram measurement from the control unit 1141 of the electrocardiogram measurement unit 114. Here, the control by the control unit 1131 from closing the exhaust valve 1135 (step S102) and driving the pump 1134 (step S103) to stopping the pump (step S106) corresponds to the pressurization control and pressurization step of the present invention. And the opening of the exhaust valve by the control unit 1131 (step S108) corresponds to the depressurization control and depressurization step of the present invention.

[0049] In the second embodiment, as shown in Fig. 6, the cuff pressure increases from the start time T0 of the blood pressure measurement to the end time Tp of the blood pressure measurement, and at the end time Tp of the blood pressure measurement, the pump 1134 is stopped to stop the inflation, the opening of the exhaust valve 1135 is controlled, and the air in the cuff 1202 is gradually discharged, so that the cuff pressure also gradually decreases. Then, at the end time Tc of the electrocardiogram measurement, the exhaust valve 1135 is opened, so that the cuff pressure rapidly decreases. At this time, the rate at which the cuff pressure decreases from the end time Tp of the blood pressure measurement (i.e., the end time of the inflation control and the inflation step) to the end time Tc of the electrocardiogram measurement is the same as that of the electrocardiogram measurement. end The cuff pressure is controlled to decrease more slowly than the rate of decrease during decompression control after time Tc.

[0050] In this way, after blood pressure measurement is completed, the biological information measuring device 200 of Example 2 controls the exhaust valve 1135 to slowly exhaust air while electrocardiogram measurement is continuing, thereby preventing a sudden change in the contact state between the first electrode 1203 and the second electrode 1204. This enables the electrocardiogram measuring unit 114 to perform stable electrocardiogram measurement even after blood pressure measurement is completed.

[0051] <Example 3> A biological information measuring device 300 according to a third embodiment of the present invention will be described below. Components common to the first and second embodiments will be denoted by common reference numerals and detailed descriptions thereof will be omitted. 3 The configuration of the biological information measuring device 100 according to the first embodiment shown in FIG. 1 is the same as that of the biological information measuring device 100 according to the first embodiment, and therefore the description thereof will be omitted.

[0052] An example is shown in Figure 8. 3 9 shows the progress from the start of blood pressure measurement and electrocardiogram measurement in the biological information measurement device 200 according to the embodiment, and the change in cuff pressure over time. 3 1 shows the procedures for blood pressure measurement and electrocardiogram measurement as a control method for the biological information measurement device 200 according to the present invention.

[0053] As shown in FIG. 9, blood pressure measurement is started (step S101) and electrocardiogram measurement is started at the same time (step S201). When blood pressure measurement is started, the control unit 1131 closes the exhaust valve 1135 (step S102), drives the pump 1134 (step S103), and pumps air into the cuff 1202 to pressurize it. On the other hand, when electrocardiogram measurement is started, the control unit 1141 continues the electrocardiogram measurement for a predetermined time (step S202). In the blood pressure measurement unit 113, the pressure detection unit 1133 detects the cuff pressure and the pulse wave superimposed thereon, and the calculation unit 1132 performs a predetermined process on the information on the pulse wave to calculate blood pressure (diastolic blood pressure and systolic blood pressure). When the calculation of blood pressure is completed (step S104), the blood pressure measurement is ended (step S105). When the blood pressure measurement is ended, the control unit 1131 controls the flow rate of the pump 1134 while keeping the exhaust valve 1135 closed (step S131). Since air is continuously sent from the pump 1134 into the cuff 1202, the cuff pressure continues to rise gently. On the other hand, when the electrocardiogram measurement unit 114 measures the electrocardiogram waveform for a predetermined time, the control unit 1141 ends the electrocardiogram measurement (step S203). The control unit 1131 controls the flow rate of the pump 1134 until the electrocardiogram measurement ends (if it is determined that the result is No in step S132), and when the electrocardiogram measurement ends (if it is determined that the result is Yes in step S132), it stops the pump 1134 (step S106) and opens the exhaust valve 1135 (step S108). The control unit 1131 of the blood pressure measurement unit 113 may stop the pump 1134 after the electrocardiogram measurement period has elapsed, or may stop the pump 1134 upon receiving a notification of the end of the electrocardiogram measurement from the control unit 1141 of the electrocardiogram measurement unit 114. Here, the control by the control unit 1131 from closing the exhaust valve 1135 (step S102) and driving the pump 1134 (step S103) until the end of the blood pressure measurement (step S105) corresponds to the pressurization control and pressurization step of the present invention. And the opening of the exhaust valve by the control unit 1131 (step S108) corresponds to the depressurization control and depressurization step of the present invention.

[0054] In the third embodiment, as shown in Fig. 8, the cuff pressure increases from the start time T0 of the blood pressure measurement to the end time Tp of the blood pressure measurement, and the slope of the increase becomes smaller and the cuff pressure continues to increase more slowly from the end time Tp of the blood pressure measurement by controlling the flow rate of the pump 1134. Then, the pump 1134 is stopped and the exhaust valve 1135 is opened at the end time Tc of the electrocardiogram measurement, so that the cuff pressure rapidly decreases. At this time, the increase rate of the cuff pressure from the end time Tp of the blood pressure measurement (i.e., the end time of the inflation control and the inflation step) to the end time Tc of the electrocardiogram measurement is controlled to increase more slowly than the increase rate of the cuff pressure at the end time Tp of the blood pressure measurement, i.e., the end of the inflation control and the inflation step.

[0055] In this way, in the biological information measuring device 300 of the third embodiment, after the blood pressure measurement is completed, while the electrocardiogram measurement is continuing, the flow rate of the pump 1134 is controlled to gradually increase the pressure, thereby preventing a sudden change in the contact state between the first electrode 1203 and the second electrode 1204. This enables the electrocardiogram measuring unit 114 to perform stable electrocardiogram measurement even after the blood pressure measurement is completed.

[0056] <Example 4> A biological information measuring device 400 according to a fourth embodiment of the present invention will be described below. Components common to the first embodiment will be denoted by common reference numerals and detailed descriptions thereof will be omitted. The components of the biological information measuring device 400 according to the fourth embodiment are common to the biological information measuring device 100 according to the first embodiment shown in FIG. 1, and therefore descriptions thereof will be omitted.

[0057] Fig. 10 shows the progress from the start of blood pressure measurement and electrocardiogram measurement in the biological information measurement device 400 according to the fourth embodiment, and the change in cuff pressure over time. Fig. 11 shows the procedure of blood pressure measurement and electrocardiogram measurement as a control method of the biological information measurement device 400 according to the fourth embodiment.

[0058] In the fourth embodiment, a process when an abnormality is detected during blood pressure measurement will be described. As shown in FIG. 11, blood pressure measurement is started (step S101) and electrocardiogram measurement is started at the same time (step S201). When blood pressure measurement is started, the control unit 1131 closes the exhaust valve 1135 (step S102), drives the pump 1134 (step S103), and pumps air into the cuff 1202 to pressurize it. On the other hand, when electrocardiogram measurement is started, the control unit 1141 continues the electrocardiogram measurement for a predetermined time (step S202). At the stage where the pump 1134 is driven to pressurize the cuff 1202, the control unit 1131 detects an abnormality (step S141). When the control unit 1131 detects an abnormality, the blood pressure measurement is terminated (step S105). At the same time that the control unit 1131 terminates the blood pressure measurement, the control unit 1141 terminates the electrocardiogram measurement (step S241). The control unit 1141 receives at least one of a notification of abnormality detection and blood pressure measurement end from the control unit 1131, and ends the electrocardiogram measurement based on this. When the blood pressure measurement ends, the control unit 1131 stops the pump 1134 (step S106) and opens the exhaust valve 1135 (step S108). At this time, the control unit 1131 notifies the subject of the abnormality by displaying a message or image on the display unit 111 at an appropriate timing after the abnormality detection (step S141). Here, the control by the control unit 1131 from closing the exhaust valve 1135 (step S102) and driving the pump 1134 (step S103) to stopping the pump (step S106) corresponds to the pressurization control and pressurization step of the present invention, so that the above-mentioned abnormality detection (step S141) corresponds to before the end of the pressurization control and before the end of the pressurization step of the present invention. The opening of the exhaust valve by the control unit 1131 (step S108) corresponds to the pressure reduction control and pressure reduction step of the present invention. The control unit 1131 corresponds to the display control unit of the present invention.

[0059] As shown in FIG. 10, the cuff pressure rises from the start time T0 of the blood pressure measurement and the electrocardiogram measurement, and at the time Ta1 when an abnormality is detected, the pump 1134 is stopped and the exhaust valve 1135 is opened. This causes the air in the cuff 1202 to be rapidly discharged, causing a rapid change in the contact state between the first electrode 1203 and the second electrode 1204 provided on the inner circumference of the cuff 1202, and since stable electrocardiogram measurement cannot be expected, the electrocardiogram measurement is terminated at the same time as the blood pressure measurement is terminated. During blood pressure measurement, the cuff is pressurized and the subject's wrist is compressed, which places a high burden on the subject, so if an abnormality is detected in the blood pressure measurement, it is desirable to prioritize the blood pressure measurement abnormality processing. For this reason, if an abnormality is detected in the blood pressure measurement, the blood pressure measurement is terminated, the pump 1134 is immediately stopped, and the exhaust valve 1135 is opened. In addition, since such a measure makes it difficult to perform stable electrocardiogram measurement, the electrocardiogram measurement is also terminated at the same time.

[0060] <Example 5> A biological information measuring device 500 according to a fifth embodiment of the present invention will be described below. Components common to the first embodiment will be denoted by common reference numerals and detailed descriptions thereof will be omitted. The components of the biological information measuring device 500 according to the fifth embodiment are common to the biological information measuring device 100 according to the first embodiment shown in FIG. 1, and therefore descriptions thereof will be omitted.

[0061] Fig. 12 shows the progress from the start of blood pressure measurement and electrocardiogram measurement in the biological information measurement device 500 according to Example 5, and the change in cuff pressure over time. Fig. 13 shows the procedure of blood pressure measurement and electrocardiogram measurement as a control method of the biological information measurement device 500 according to Example 5.

[0062] In the fifth embodiment, a process when an abnormality is detected during electrocardiogram measurement will be described. As shown in FIG. 13, blood pressure measurement is started (step S101) and electrocardiogram measurement is started at the same time (step S201). When blood pressure measurement is started, the control unit 1131 closes the exhaust valve 1135 (step S102), drives the pump 1134 (step S103), and sends air into the cuff 1202 to pressurize it. Meanwhile, during electrocardiogram measurement, the control unit 1141 detects an abnormality (step S251). When the control unit 1141 detects an abnormality, it ends the electrocardiogram measurement without waiting for a predetermined time to elapse (step S203). At this stage, the control unit 1141 does not inform the subject that there is an abnormality. The blood pressure measurement unit 113 continues the blood pressure measurement operation regardless of the end of the electrocardiogram measurement in the electrocardiogram measurement unit 114. That is, in the blood pressure measurement unit 113, the pressure detection unit 1133 detects the cuff pressure and the pulse wave superimposed thereon, and the calculation unit 1132 performs a predetermined process on the information on the pulse wave to calculate the blood pressure (diastolic blood pressure and systolic blood pressure). When the calculation of the blood pressure is completed (step S104), the blood pressure measurement is terminated (step S105). When the blood pressure measurement is terminated, the control unit 1131 stops the pump 1134 (step S106) and opens the exhaust valve 1135 (step S108). At an appropriate timing after the end of the blood pressure measurement (step S105), the control unit 1141 notifies the subject that the electrocardiogram measurement is abnormal by displaying a message or an image on the display unit 111. Here, the control by the control unit 1131 from closing the exhaust valve 1135 (step S102) and driving the pump 1134 (step S103) to stopping the pump (step S106) corresponds to the pressurization control and pressurization step of the present invention. The opening of the exhaust valve by the control unit 1131 (step S108) corresponds to the pressure reduction control and pressure reduction step of the present invention. The control unit 1141 corresponds to the display control unit of the present invention.

[0063] As shown in Fig. 12, from the start time T0 of the blood pressure measurement and the electrocardiogram measurement, the blood pressure measurement and the electrocardiogram measurement progress, and the cuff pressure rises accordingly. At time Ta2 while the blood pressure measurement and the electrocardiogram measurement are proceeding in parallel, the control unit 1141 detects an abnormality and ends the electrocardiogram measurement. The blood pressure measurement continues even after the end time Tc of the electrocardiogram measurement, and the cuff pressure continues to rise. Thereafter, at time Tp when the blood pressure measurement ends, the pump 1134 is stopped and the exhaust valve 1135 is opened, causing the cuff pressure to rapidly decrease.

[0064] In this way, since electrocardiogram measurement places a lower burden on the subject than blood pressure measurement, blood pressure measurement is given priority. Also, if an abnormality in electrocardiogram measurement is notified to the subject during blood pressure measurement, the blood pressure measurement may be affected by the subject's actions such as removing the third electrode 115 or touching it again, so the abnormality in electrocardiogram measurement is not notified until the blood pressure measurement is completed, and is notified after the blood pressure measurement is completed. [Explanation of symbols]

[0065] 100, 200, 300, 400, 500... Biometrics measuring device 113 Blood pressure measuring unit 114...Electrocardiogram measurement section 115...Third electrode 1131 Control unit 1133 Pressure detection unit 1134 Pump 1135··Exhaust valve 1141 Control unit 1202··Cuff 1203...1st electrode 1204...Second electrode

Claims

1. a blood pressure measurement unit that has a blood pressure measurement control unit that controls a cuff that presses against a measurement site of a subject, a pump that supplies gas into the cuff, an exhaust valve that adjusts the exhaust of the gas from inside the cuff, and a pressure detection unit that detects a cuff pressure that is the pressure inside the cuff, and measures the blood pressure of the subject; an electrocardiogram measuring unit that processes an electrical signal acquired through a plurality of electrodes that can be brought into contact with the skin of the subject to measure an electrocardiogram waveform; A biological information measuring device comprising: The blood pressure measurement control unit is a pressurization control for supplying the gas from the pump to the cuff to increase the cuff pressure; a decompression control for rapidly reducing the cuff pressure by opening the exhaust valve; Run A biological information measuring device characterized in that, at the end of the pressurization control, it is determined whether the electrocardiogram measurement unit has finished measuring the electrocardiogram waveform, and if it is determined that the electrocardiogram measurement unit is continuing to measure the electrocardiogram waveform, the cuff pressure is maintained constant or gradually changed before performing the depressurization control.

2. The blood pressure measurement control unit is The biological information measuring device of claim 1, characterized in that when it is determined that the electrocardiogram measurement unit is continuing to measure the electrocardiogram waveform at the end of the inflation control, before executing the depressurization control, the pump is controlled so that the cuff pressure increases more slowly than the increasing rate at the time of the end of the inflation control, or the exhaust valve is controlled so that the cuff pressure decreases more slowly than the decreasing rate during the depressurization control.

3. When the blood pressure measurement control unit detects an abnormality, The blood pressure measurement control unit stops the pressurization control and executes the depressurization control, 3. The biological information measuring device according to claim 1, wherein the electrocardiogram measuring section terminates the measurement of the electrocardiogram waveform.

4. When the electrocardiogram measurement unit detects an abnormality before the end of the pressurization control, The electrocardiogram measurement unit finishes measuring the electrocardiogram waveform, 4. The biological information measuring device according to claim 1, wherein the blood pressure measurement control unit continues to execute the pressurization control.

5. A display unit for displaying information; A display control unit that controls the display unit; Equipped with 4. The biological information measuring device according to claim 3, wherein the display control unit displays on the display unit a message indicating that the blood pressure measurement is abnormal.

6. A display unit for displaying information; A display control unit that controls the display unit; Equipped with 5. The biological information measuring device according to claim 4, wherein the display control unit displays on the display unit, after the blood pressure measurement is completed, a message indicating that the abnormality has occurred in the measurement of the electrocardiogram waveform.

7. A cuff that presses against the subject's measurement site; A pump for supplying gas into the cuff; an exhaust valve for adjusting the exhaust of the gas from within the cuff; A blood pressure measurement unit for measuring blood pressure; an electrocardiogram measuring unit that processes an electrical signal acquired through a plurality of electrodes that can be brought into contact with the skin of the subject to measure an electrocardiogram waveform; A control method for a biological information measuring device comprising: a pressurizing step of supplying the gas from the pump to the cuff to increase a cuff pressure, which is a pressure inside the cuff; a decompression step of opening the exhaust valve to rapidly reduce the cuff pressure; a step of determining whether or not the measurement of the electrocardiogram waveform has been completed at the end of the pressurizing step; Including, A control method for a vital information measuring device, characterized in that it includes a step of maintaining the cuff pressure constant or gradually changing it before the depressurization step when it is determined that the measurement of the electrocardiogram waveform is continuing at the end of the pressurization step.

8. A control method for a biological information measuring device as described in claim 7, characterized in that when it is determined that measurement of the electrocardiogram waveform is continuing at the end of the pressurization step, before the depressurization step, the pump is controlled so that the cuff pressure increases more slowly than the increasing rate at the end of the pressurization step, or the exhaust valve is controlled so that the cuff pressure decreases more slowly than the decreasing rate in the depressurization step.

9. When the blood pressure measurement unit detects an abnormality, The pressurization step is stopped and the depressurization step is carried out; 9. The method for controlling a biological information measuring device according to claim 7, further comprising the step of terminating the measurement of the electrocardiogram waveform.

10. If the electrocardiogram measuring unit detects an abnormality before the pressurizing step is completed, Stopping the measurement of the electrocardiogram waveform; 10. The method for controlling a biological information measuring device according to claim 7, further comprising the step of continuing the pressurizing step.

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