Blood pressure monitor apparatus
First Claim
1. A blood pressure monitor apparatus comprising:
- a blood pressure measuring device which includes a cuff adapted to be pressed on an artery of a living subject and measures a blood pressure value of the subject by changing a pressing pressure of the cuff;
a volume pulse wave detecting device which detects a volume pulse wave of the subject;
normalized pulse-wave area calculating means for successively calculating an area which is defined by a waveform of each of heartbeat-synchronous pulses of the volume pulse wave detected by said volume pulse wave detecting device and is normalized based on a period and an amplitude of said each pulse of the volume pulse wave;
pulse wave area-blood pressure relationship determining means for determining a relationship between pulse-wave area and blood pressure, based on a normalized pulse-wave area value calculated by said normalized pulse-wave area calculating means and a blood pressure value measured by said blood pressure measuring device, when said blood pressure value is measured; and
monitor blood pressure determining means for successively determining a monitor blood-pressure value of the subject, based on each of normalized pulse-wave area values successively calculated by said normalized pulse-wave area calculating means, according to the pulse wave area-blood pressure relationship determined by said pulse wave area-blood pressure relationship determining means.
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Accused Products
Abstract
A blood pressure monitor apparatus including a blood pressure measuring device which includes a cuff and measures a blood pressure value of the subject by changing a pressing pressure of the cuff, a volume pulse wave detecting device which detects a volume pulse wave of the subject, a normalized pulse-wave area calculating device 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 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 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.
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Citations
11 Claims
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1. A blood pressure monitor apparatus comprising:
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a blood pressure measuring device which includes a cuff adapted to be pressed on an artery of a living subject and measures a blood pressure value of the subject by changing a pressing pressure of the cuff; a volume pulse wave detecting device which detects a volume pulse wave of the subject; normalized pulse-wave area calculating means for successively calculating an area which is defined by a waveform of each of heartbeat-synchronous pulses of the volume pulse wave detected by said volume pulse wave detecting device and is normalized based on a period and an amplitude of said each pulse of the volume pulse wave; pulse wave area-blood pressure relationship determining means for determining a relationship between pulse-wave area and blood pressure, based on a normalized pulse-wave area value calculated by said normalized pulse-wave area calculating means and a blood pressure value measured by said blood pressure measuring device, when said blood pressure value is measured; and monitor blood pressure determining means for successively determining a monitor blood-pressure value of the subject, based on each of normalized pulse-wave area values successively calculated by said normalized pulse-wave area calculating means, according to the pulse wave area-blood pressure relationship determined by said pulse wave area-blood pressure relationship determining means. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A blood pressure monitor apparatus including a blood pressure measuring device which includes a cuff being set on a body portion of a living subject and periodically measures a blood pressure value of the subject, based on a variation of a pulse wave produced while a pressing pressure of the cuff is changed, the blood pressure monitor apparatus comprising:
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a volume pulse wave detecting device which detects a volume pulse wave of the subject; normalized pulse-wave area calculating means for successively calculating an area which is defined by a waveform of each of heartbeat-synchronous pulses of the volume pulse wave detected by said volume pulse wave detecting device and is normalized based on a period and an amplitude of said each pulse of the volume pulse wave; pulse-wave area change calculating means for calculating a change of the normalized pulse-wave area values successively calculated by said normalized pulse-wave area calculating means; and blood-pressure change identifying means for identifying an abnormal blood-pressure change of the subject when the change of the normalized pulse-wave area values is greater than a reference value. - View Dependent Claims (8, 9, 10, 11)
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Specification