Blood-pressure measuring apparatus having augmentation-index determining function
First Claim
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1. A blood-pressure measuring apparatus comprising:
- a cuff which is adapted to be worn on a portion of a living subject to press said portion;
an augmentation-index determining means for determining an augmentation index of the subject based on a cuff pulse wave obtained from the cuff; and
a cuff-pulse-wave obtaining means for obtaining, during a pressing period in which the cuff presses said portion of the subject for measuring a blood pressure of the subject, the cuff pulse wave from the cuff so that the augmentation-index determining means determines the augmentation index based on the obtained cuff pulse wave.
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Abstract
A blood-pressure measuring apparatus including a cuff which is adapted to be worn on a portion of a living subject to press the portion, an augmentation-index determining device for determining an augmentation index of the subject based on a cuff pulse wave obtained from the cuff, and a cuff-pulse-wave obtaining device for obtaining, during a pressing period in which the cuff presses the portion of the subject for measuring a blood pressure of the subject, the cuff pulse wave from the cuff so that the augmentation-index determining device determines the augmentation index based on the obtained cuff pulse wave.
15 Citations
5 Claims
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1. A blood-pressure measuring apparatus comprising:
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a cuff which is adapted to be worn on a portion of a living subject to press said portion;
an augmentation-index determining means for determining an augmentation index of the subject based on a cuff pulse wave obtained from the cuff; and
a cuff-pulse-wave obtaining means for obtaining, during a pressing period in which the cuff presses said portion of the subject for measuring a blood pressure of the subject, the cuff pulse wave from the cuff so that the augmentation-index determining means determines the augmentation index based on the obtained cuff pulse wave. - View Dependent Claims (2, 3, 4, 5)
wherein the cuff-pulse-wave obtaining means obtains, as the cuff pulse wave, a pressure oscillation occurring to the cuff in a state in which the pressure in the cuff is kept at the pre-determined pulse-wave detection pressure. -
3. An apparatus according to claim 2, wherein the pulse-wave-detection-pressure keeping means keeps the pressure in the cuff to the pre-determined pulse-wave detection pressure, in each of an initial portion and a terminal portion of the pressing period,
wherein the cuff-pulse-wave obtaining means obtains, as a first cuff pulse wave, a pressure oscillation occurring to the cuff in a state in which the pressure in the cuff is kept at the pre-determined pulse-wave detection pressure in the initial portion of the pressing period, and obtains, as a second cuff pulse wave, a pressure oscillation occurring to the cuff in a state in which the pressure in the cuff is kept at the pre-determined pulse-wave detection pressure in the terminal portion of the pressing period, and wherein the augmentation-index determining means determines a first augmentation index of the subject based on the first cuff pulse wave obtained from the cuff in the initial portion of the pressing period, and determines a second augmentation index of the subject based on the second cuff pulse wave obtained from the cuff in the terminal portion of the pressing period. -
4. An apparatus according to claim 3, further comprising a modified-augmentation-index determining means for determining a modified augmentation index based on the first and second augmentation indexes determined by the augmentation-index determining means.
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5. An apparatus according to claim 3, further comprising an artery evaluating means for evaluating a degree of arteriosclerosis or a vascular endothelium of the subject based on the first and second augmentation indexes determined by the augmentation-index determining means.
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Specification