摘要:
An electronic sphygmomanometer, which measures blood pressure in accordance with the volume compensation method, detects a cuff pressure inside a cuff attached to a measurement site of the blood pressure. An arterial volume detection circuit detects an arterial volume signal of the measurement site. A drive control unit, after setting the cuff pressure to an initial cuff pressure, servo-controls a cuff pressure adjustment unit so that a volume of an artery becomes constant, based on the detected arterial volume signal. While the servo control is being performed, an arterial volume change amount is detected based on the detected arterial volume signal. In the servo control, when it is detected that the change amount in the arterial volume is minimal, a volume change elimination rate calculating unit calculates a volume change elimination rate (an amplitude of the arterial volume signal during the control/an amplitude of the arterial volume signal before the control) to output the same as a barometer of arteriosclerosis.
摘要:
A blood pressure information measurement device instantaneously changes cuff pressure in a specified pressure section in order to detect a control target value in artery volume constant control. An artery volume signal is detected in that period, and an inflection point of the detected artery volume signal is detected by performing differentiation processing or the like. The inflection point of the detected artery volume signal is fixed as the control target value.
摘要:
A blood pressure measurement apparatus includes a derivation control unit that performs derivation control to derive a blood pressure of a measured person. The derivation control unit includes an envelope extracting unit to extract an envelope of a volume pulse wave based on an arterial volume signal, a differential processing unit to differentiate the envelope with respect to a cuff pressure, a maximum value extracting unit to extract a maximum value of a differential value of the envelope, and a blood pressure decision unit that decides the cuff pressure used for the differential of the maximum value as a blood pressure.
摘要:
An electronic sphygmomanometer, which measures blood pressure in accordance with the volume compensation method, detects a cuff pressure inside a cuff attached to a measurement site of the blood pressure. An arterial volume detection circuit detects an arterial volume signal of the measurement site. A drive control unit, after setting the cuff pressure to an initial cuff pressure, servo-controls a cuff pressure adjustment unit so that a volume of an artery becomes constant, based on the detected arterial volume signal. While the servo control is being performed, an arterial volume change amount is detected based on the detected arterial volume signal. In the servo control, when it is detected that the change amount in the arterial volume is minimal, a volume change elimination rate calculating unit calculates a volume change elimination rate (an amplitude of the arterial volume signal during the control/an amplitude of the arterial volume signal before the control) to output the same as a barometer of arteriosclerosis.
摘要:
A blood pressure information measurement device includes a cuff (10A) serving as a detection unit. The cuff (10A) includes an air bladder (40), a photoelectric sensor (50), a belt member (20), and a fixing stand (32), and is attached to a living body by wrapping the belt member (20) around a measuring site. The photoelectric sensor (50) optically detects an intra-arterial volume fluctuation, and includes a light emitting element (51) and a light receiving element (52). The fixing stand (32) includes a base portion (32a) with a sensor attachment surface (32a1) attached with the photoelectric sensor (50), and a guide portion (32b) arranged projecting out from the base portion (32a) toward the sensor attachment surface (32a1) side, and having a distal end placed at a body surface near the measuring site in the attachment state of the cuff (10A). The air bladder (40) is arranged on the sensor attachment surface (32a1) so as to cover the photoelectric sensor (50), and the guide portion (32b) is arranged to surround the photoelectric sensor (50). With such a configuration, the blood pressure information measurement device capable of acquiring a volume pulse wave easily and at high accuracy can be obtained.
摘要:
A blood pressure measurement apparatus includes a derivation control unit that performs derivation control to derive a blood pressure of a measured person. The derivation control unit includes an envelope extracting unit to extract an envelope of a volume pulse wave based on an arterial volume signal, a differential processing unit to differentiate the envelope with respect to a cuff pressure, a maximum value extracting unit to extract a maximum value of a differential value of the envelope, and a blood pressure decision unit that decides the cuff pressure used for the differential of the maximum value as a blood pressure.
摘要:
A blood pressure information measurement device includes light emitting elements and light receiving elements as a plurality of pairs of first and second sensors in a cuff. While the cuff pressure is increased, combinations of the plurality of pairs of the light emitting elements and the light receiving elements are switched, and volume pulse waves are obtained from each of the combinations. After increasing the cuff pressure, for each of the volume pulse waves corresponding to the combinations, a specific volume value at a point where the amount of volume change becomes maximal is extracted. Thereafter, based on values corresponding to the maximum and minimum blood pressure and the specific volume value, the sensors for measurement are determined.
摘要:
A blood pressure information measurement device instantaneously changes cuff pressure in a specified pressure section in order to detect a control target value in artery volume constant control. An artery volume signal is detected in that period, and an inflection point of the detected artery volume signal is detected by performing differentiation processing or the like. The inflection point of the detected artery volume signal is fixed as the control target value.
摘要:
A blood pressure information measurement device cuff includes a wide blood pressure value measurement air bladder wrapped around a fitting area when in a fitted state, and a narrow pulse wave measurement air bladder disposed so as to be closer to the fitting area than the blood pressure value measurement air bladder when in the fitted state, and covered by the blood pressure value measurement air bladder when wrapped around the fitting area. The pulse wave measurement air bladder includes an anchored portion anchored to the blood pressure value measurement air bladder so as to be immobile relative to the blood pressure value measurement air bladder and a mobile portion that is not anchored to the blood pressure value measurement air bladder so as to be mobile relative to the blood pressure value measurement air bladder along a wrapping direction in which the cuff is wrapped around the measurement area.
摘要:
A blood pressure measurement device includes a cuff, a display, a distance sensor, an acceleration sensor, and a CPU. The display displays a positional relationship between the patient's heart and the device, which includes a flat screen. The distance sensor measures a distance between the device and the patient, and detects a subject to be measured on a line perpendicular to the flat screen of the display and measures the distance. The acceleration sensor measures an angle of inclination of the device when mounted on the patient's wrist. The CPU calculates a positional relationship between the patient's heart and the device based on the distance between the device and the subject to be measured, the angle of inclination of the device mounted on the patient's wrist, the length of the patient's forearm and upper arm, and a vertical distance between the patient's shoulder and heart.