Abstract: In a sphygmomanometer, a value representing a perimeter of a measuring portion is obtained. A parameter for controlling a drive voltage of a pump is determined based on the value. The drive voltage is determined based on the parameter and an internal pressure of a fluid bladder to pressurize the fluid bladder. In pressurizing process, a diastolic blood pressure value is calculated. A systolic blood pressure value is estimated, and when the internal pressure of the fluid bladder reaches the pressure, the pressurizing is stopped. A gap of a valve for discharging the fluid from the fluid bladder is determined based on a perimeter of a measuring portion, and the fluid bladder is depressurized with the gap constant. In the depressurizing process, the systolic blood pressure value is calculated. When the systolic blood pressure value is calculated, the fluid is discharged from the fluid bladder, and the measurement is terminated.

Abstract: A sphygmomanometer, in a deflation process after inflation to prescribed pressure adjusts a drive voltage of an exhaust valve such that a deflation speed of a fluid bag achieves a prescribed deflation speed during an adjustment period, which is a prescribed period after starting deflation. When the adjustment period ends or when the deflation speed of the fluid bag achieves the prescribed speed, control is subsequently performed to fix the drive voltage of the exhaust valve and deflate the fluid bag while holding a gap of the exhaust valve constant.

Abstract: An electronic sphygmomanometer determines whether a position of a measurement site falls within a proper range, and notifies whether the position of the measurement site falls within the proper range. When determination is made that a time in which the position of the measurement site falls within the proper range is not less than a predetermined time (for example, 2 seconds), measurement of a blood pressure is automatically started. When determination is made that a time in which the position of the measurement site is out of the proper range is not less than a predetermined time (for example, 5 seconds), the measurement of the blood pressure is started. Further, whether the position of the measurement site falls within the proper range is notified while correlated with the measurement result.

Abstract: An electronic sphygmomanometer has a causing unit that causes a constant volume change in a cuff and a causing processing unit for controlling a drive of the causing unit for a period for which a first pressure control (for example, depressurization control) is made so as to execute a process for giving a constant volume change to the cuff. Further, the electronic sphygmomanometer includes a measurement control unit that controls based on a cuff pressure signal measurement of a pulse wave amplitude and a pressure change property with respect to the volume change. The electronic sphygmomanometer includes a correction processing unit that corrects the measured pulse wave amplitude based on the measured pressure change property and a blood pressure calculating unit that calculates a blood pressure value based on the corrected pulse wave amplitude.

Abstract: A sphygmomanometer, in a deflation process after inflation to prescribed pressure adjusts a drive voltage of an exhaust valve such that a deflation speed of a fluid bag achieves a prescribed deflation speed during an adjustment period, which is a prescribed period after starting deflation. When the adjustment period ends or when the deflation speed of the fluid bag achieves the prescribed speed, control is subsequently performed to fix the drive voltage of the exhaust valve and deflate the fluid bag while holding a gap of the exhaust valve constant.

Abstract: An electronic sphygmomanometer has a causing unit that causes a constant volume change in a cuff and a causing processing unit for controlling a drive of the causing unit for a period for which a first pressure control (for example, depressurization control) is made so as to execute a process for giving a constant volume change to the cuff. Further, the electronic sphygmomanometer includes a measurement control unit that controls based on a cuff pressure signal measurement of a pulse wave amplitude and a pressure change property with respect to the volume change. The electronic sphygmomanometer includes a correction processing unit that corrects the measured pulse wave amplitude based on the measured pressure change property and a blood pressure calculating unit that calculates a blood pressure value based on the corrected pulse wave amplitude.

Abstract: An electronic sphygmomanometer determines whether a position of a measurement site falls within a proper range, and notifies whether the position of the measurement site falls within the proper range. When determination is made that a time in which the position of the measurement site falls within the proper range is not less than a predetermined time (for example, 2 seconds), measurement of a blood pressure is automatically started. When determination is made that a time in which the position of the measurement site is out of the proper range is not less than a predetermined time (for example, 5 seconds), the measurement of the blood pressure is started. Further, whether the position of the measurement site falls within the proper range is notified while correlated with the measurement result.

Abstract: In a sphygmomanometer, a value representing a perimeter of a measuring portion is obtained. A parameter for controlling a drive voltage of a pump is determined based on the value. The drive voltage is determined based on the parameter and an internal pressure of a fluid bladder to pressurize the fluid bladder. In pressurizing process, a diastolic blood pressure value is calculated. A systolic blood pressure value is estimated, and when the internal pressure of the fluid bladder reaches the pressure, the pressurizing is stopped. A gap of a valve for discharging the fluid from the fluid bladder is determined based on a perimeter of a measuring portion, and the fluid bladder is depressurized with the gap constant. In the depressurizing process, the systolic blood pressure value is calculated. When the systolic blood pressure value is calculated, the fluid is discharged from the fluid bladder, and the measurement is terminated.

Abstract: A blood pressure measurement device includes a measurement fluid bag, a sensor for measuring a change in internal pressure of the measurement fluid bag, a blood pressure measurement unit for calculating a blood pressure value based on the change in internal pressure of the measurement fluid bag obtained by the sensor, an environmental information measurement unit for measuring environmental information in association with a calculation process of the blood pressure value, a storage unit for storing a measurement result, a recording processing unit for storing the calculated blood pressure value and the environmental information in the storage unit in association with each other and a notification unit for notifying a blood pressure fluctuation with respect to an environmental fluctuation based on the blood pressure value and the environmental information.

Abstract: A measurement accuracy check system of a sphygmomanometer includes a sphygmomanometer having a blood pressure measurement mode for measuring a blood pressure based on a change in internal pressure of a cuff attached to a blood pressure measurement site, and an accuracy check mode for checking measurement accuracy in the blood pressure measurement mode, and an accuracy check device communicably connected with the sphygmomanometer for determining the measurement accuracy of the sphygmomanometer in the accuracy check mode. The sphygmomanometer includes an air system piping communicating to the cuff in the blood pressure measurement mode and communicating to an air system of the accuracy check device in the accuracy check mode, a pressurization and depressurization unit for adjusting pressure to be applied to the air system piping, and a first pressure detection unit for detecting pressure in the air system piping.