摘要:
A blood pressure monitor apparatus includes a cuff (10) for measuring a blood pressure value of a subject. A volume pulse wave detecting device (40) and a pulse-wave area calculating device (74) are used for determining a relationship between pulse-wave area and blood pressure. A monitor device (78) continuously displays a blood-pressure value of the subject, based on to the pulse wave area-blood pressure relationship. In case of any abnormality the monitor device (78) is updated by inflating the cuff (10) to perform another blood pressure measurement.
摘要:
A system for evaluating an autonomic nervous system of a living subject, comprising a first pulse wave detection circuit (48, 50) that detects first pulse waves from a first portion of the subject; a second pulse wave detection circuit (12) that detects second pulse waves from a second portion of the subject; a time-difference determining circuit (64) that determines time differences between predetermined periodic points on the first pulse waves and predetermined periodic points on the corresponding second pulse waves; and an autonomic nervous system evaluation circuit (62, 68, 70) that evaluates the autonomic nervous system of the subject based on a frequency component present in fluctuations of the time differences determined by the time-difference determining circuit.
摘要:
A blood pressure monitor apparatus including a blood pressure measuring device (10, 14, 22, 24, 70, 72, SA5) which includes a cuff (10) and measures a blood pressure value of the subject by changing a pressing pressure of the cuff, a volume pulse wave detecting device (40) which detects a volume pulse wave of the subject, a normalized pulse-wave area calculating device (74, SA3, SA8) for successively calculating an area which is defined by a waveform of each of heartbeat-synchronous pulses of the volume pulse wave and is normalized based on a period and an amplitude of the each pulse of the volume pulse wave, a pulse wave area-blood pressure relationship determining device (76, SA6) for determining a relationship between pulse-wave area and blood pressure, based on a normalized pulse-wave area value and a blood pressure value, when the blood pressure value is measured; and a monitor blood pressure determining device (78, SA9) for successively determining a monitor-blood-pressure value of the subject, based on each of normalized pulse-wave area values, according to the pulse wave area-blood pressure relationship.
摘要:
An apparatus for non invasive estimation of intraarterial blood pressure comprising: first means (70,SA2,SB2) for obtaining the velocity of propagation of a pulse wave through an artery; second means (72,SA3,SB3,SA4,SB4) for obtaining at least one between the heart rate of the subject and an area defined by a volume pulse wave from a peripheral portion of the subject; and third means (80,SB5) for estimating the intraarterial blood pressure according to a predetermined mathematical relationship including a plurality of coefficients.
摘要:
An apparatus for non invasive estimation of the arterial blood pressure of a living subject, comprising: first means (70,SA2,SB2) for obtaining the velocity of propagation of a pulse wave; second means (72,SA3,SB3,SA4,SB4) for obtaining at least one between the heart rate and an area defined by a volume pulse wave; third means (80,SB5) for estimating, according to a predetermined relationship between (A) blood pressure, and (B1) pulse wave propagation velocity and (B2) at least one of (B21) heart rate and (B22) pulse wave area, the blood pressure, the predetermined relationship being defined by a numerical expression including a plurality of predetermined coefficients; and fourth means (82,SA8,SB7) for selecting one group of coefficients which corresponds to a blood pressure of the subject.
摘要:
A system for evaluating an arterial elasticity of a living subject, comprising a constriction device (15, 80) that applies a changing constriction pressure to a first portion of the subject; a first pulse wave detection circuit (82) that detects first pulse waves from the first portion of the subject; a second pulse wave detection circuit (84) that detects second pulse waves from a second portion of the subject; a time-difference determining circuit (86) that determines time differences between predetermined periodic points on the first pulse waves and predetermined periodic points on the corresponding second pulse waves; and an arterial elasticity evaluation circuit (88) that determines a degree of elasticity of arteries of the subject based on a relationship between changes in the constriction pressure applied by the constriction device to the first portion of the subject and changes in the time differences determined by the time-difference determining circuit.