Blood pressure monitor apparatus
First Claim
1. A blood pressure monitor apparatus comprising:
- a blood pressure measuring device which includes a cuff and measures a blood pressure value of a living subject by changing a pressing pressure of said cuff applied to a body portion of the subject;
pulse-wave propagation information obtaining means for obtaining successive sets of actual pulse-wave propagation information;
blood pressure-pulse information relationship determining means for determining a relationship between blood pressure and pulse-wave propagation information, based on a blood pressure value measured by said blood pressure measuring device and a set of pulse-wave propagation information obtained by said pulse-wave propagation information obtaining means;
estimated blood pressure determining means for successively determining an estimated blood pressure value of the subject, based on each of the successive sets of actual pulse-wave propagation information obtained by said pulse wave propagation information obtaining means, according to the relationship between blood pressure and pulse-wave propagation information determined by said blood pressure-pulse wave propagation information relationship determining means;
a pulse period measuring device which successively measures a period of a pulse of the subject;
a peripheral pulse wave detecting device which detects a peripheral pulse wave from a peripheral body portion of the subject;
pulse-wave area calculating means for successively calculating an area defined by a waveform of a pulse of the peripheral pulse wave detected by said peripheral pulse wave detecting device; and
blood pressure measurement starting means for starting a blood pressure measurement of said blood pressure measuring device, when an amount of change of the successively estimated blood pressure values is greater than a first reference value and at least one of an amount of change of the successively measured pulse periods and an amount of change of the successively calculated pulse-wave areas is greater than a corresponding one of a second and third reference value.
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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 a living subject by changing a pressing pressure of the cuff applied to a body portion of the subject, an estimated blood pressure determining device for successively determining an estimated blood pressure value of the subject, based on each of successive sets of actual pulse-wave propagation information, according to a predetermined relationship between blood pressure and pulse-wave propagation information, a pulse period measuring device which successively measures a period of a pulse of the subject, a peripheral pulse wave detecting device which detects a peripheral pulse wave from a peripheral body portion of the subject, a pulse-wave area calculating device for successively calculating an area defined by a waveform of a pulse of the peripheral pulse wave detected by the peripheral pulse wave detecting device, and a blood pressure measurement starting device for starting a blood pressure measurement of the blood pressure measuring device, when an amount of change of the estimated blood pressure values is greater than a first reference value and at least one of an amount of change of the measured pulse periods and an amount of change of the calculated pulse-wave areas is greater than a corresponding one of a second and a third reference value.
64 Citations
15 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 and measures a blood pressure value of a living subject by changing a pressing pressure of said cuff applied to a body portion of the subject; pulse-wave propagation information obtaining means for obtaining successive sets of actual pulse-wave propagation information; blood pressure-pulse information relationship determining means for determining a relationship between blood pressure and pulse-wave propagation information, based on a blood pressure value measured by said blood pressure measuring device and a set of pulse-wave propagation information obtained by said pulse-wave propagation information obtaining means; estimated blood pressure determining means for successively determining an estimated blood pressure value of the subject, based on each of the successive sets of actual pulse-wave propagation information obtained by said pulse wave propagation information obtaining means, according to the relationship between blood pressure and pulse-wave propagation information determined by said blood pressure-pulse wave propagation information relationship determining means; a pulse period measuring device which successively measures a period of a pulse of the subject; a peripheral pulse wave detecting device which detects a peripheral pulse wave from a peripheral body portion of the subject; pulse-wave area calculating means for successively calculating an area defined by a waveform of a pulse of the peripheral pulse wave detected by said peripheral pulse wave detecting device; and blood pressure measurement starting means for starting a blood pressure measurement of said blood pressure measuring device, when an amount of change of the successively estimated blood pressure values is greater than a first reference value and at least one of an amount of change of the successively measured pulse periods and an amount of change of the successively calculated pulse-wave areas is greater than a corresponding one of a second and third reference value. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A blood pressure monitor apparatus comprising:
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a blood pressure measuring device which includes a cuff and measures a blood pressure value of a living subject by changing a pressing pressure of said cuff applied to a body portion of the subject; pulse-wave propagation information obtaining means for obtaining successive sets of actual pulse-wave propagation information; blood pressure-pulse information relationship determining means for determining a relationship between blood pressure and pulse-wave propagation information, based on a blood pressure value measured by said blood pressure measuring device and a set of pulse-wave propagation information obtained by said pulse-wave propagation information obtaining means; estimated blood pressure determining means for successively determining an estimated blood pressure value of the subject, based on each of the successive sets of actual pulse-wave propagation information obtained by said pulse wave propagation information obtaining means, according to the relationship between blood pressure and pulse-wave propagation information determined by said blood pressure-pulse wave propagation information relationship determining means; a heart rate measuring device which measures a heart rate of the subject; and relationship correcting means for correcting said relationship between blood pressure and pulse-wave propagation information, based on the heart rate measured by said heart rate measuring device. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15)
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Specification