Arteriosclerosis-degree evaluating apparatus
First Claim
1. An arteriosclerosis-degree evaluating apparatus, comprising:
- a blood-pressure measuring device which iteratively measures a blood pressure value of a living subject;
a pulse-wave-propagation-velocity-related-information obtaining device which iteratively obtains, at substantially a same time as a time when the blood-pressure measuring device measures each blood pressure value of the living subject, a piece of pulse-wave-propagation-velocity-related information that is related to a velocity at which a pulse wave propagates through an artery of the subject; and
an output device which outputs a change of the pieces of pulse-wave-propagation-velocity-related information iteratively obtained by the pulse-wave-propagation-velocity-related-information obtaining device, relative to a change of the blood pressure values iteratively measured by the blood-pressure measuring device, wherein the output device displays, in a two-dimensional graph defined by an axis indicative of blood pressure and an axis of pulse-wave propagation velocity, a symbol at a position corresponding to each of the blood pressure values iteratively measured by the blood-pressure measuring device and a corresponding one of the pieces of pulse-wave-propagation-velocity-related information iteratively obtained by the pulse-wave-propagation-velocity-related-information obtaining device.
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Abstract
An arteriosclerosis-degree evaluating apparatus, including a blood-pressure measuring device which iteratively measures a blood pressure value of a living subject, a pulse-wave-propagation-velocity-related-information obtaining device which iteratively obtains, at substantially a same time as a time when the blood-pressure measuring device measures each blood pressure value of the living subject, a piece of pulse-wave-propagation-velocity-related information that is related to a velocity at which a pulse wave propagates through an artery of the subject, and an output device which outputs a change of the pieces of pulse-wave-propagation-velocity-related information iteratively obtained by the pulse-wave-propagation-velocity-related-information obtaining device, relative to a change of the blood pressure values iteratively measured by the blood-pressure measuring device.
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Citations
11 Claims
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1. An arteriosclerosis-degree evaluating apparatus, comprising:
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a blood-pressure measuring device which iteratively measures a blood pressure value of a living subject;
a pulse-wave-propagation-velocity-related-information obtaining device which iteratively obtains, at substantially a same time as a time when the blood-pressure measuring device measures each blood pressure value of the living subject, a piece of pulse-wave-propagation-velocity-related information that is related to a velocity at which a pulse wave propagates through an artery of the subject; and
an output device which outputs a change of the pieces of pulse-wave-propagation-velocity-related information iteratively obtained by the pulse-wave-propagation-velocity-related-information obtaining device, relative to a change of the blood pressure values iteratively measured by the blood-pressure measuring device, wherein the output device displays, in a two-dimensional graph defined by an axis indicative of blood pressure and an axis of pulse-wave propagation velocity, a symbol at a position corresponding to each of the blood pressure values iteratively measured by the blood-pressure measuring device and a corresponding one of the pieces of pulse-wave-propagation-velocity-related information iteratively obtained by the pulse-wave-propagation-velocity-related-information obtaining device. - View Dependent Claims (2)
an inflatable cuff which is adapted to be worn on a portion of the subject;
a blood-pressure-value determining means for determining the blood pressure value of the subject based on a signal obtained while a pressure in the cuff is changed;
a pressure-pulse-wave detecting device which includes a pressure-pulse-wave sensor that is adapted to be pressed against a prescribed artery of the subject, and which continuously detects, through the pressure-pulse-wave sensor, a pressure pulse wave produced from the prescribed artery;
a relationship determining means for determining a relationship between magnitude of pressure pulse wave, and blood pressure, based on at least one blood pressure value determined by the blood-pressure-value determining means and at least one magnitude of the pressure pulse wave detected by the pressure-pulse-wave detecting device; and
a blood-pressure monitoring means for iteratively determining, according to the determined relationship, a monitor blood pressure value of the subject, based on a magnitude of each of heartbeat-synchronous pulses of the pressure pulse wave continuously detected by the pressure-pulse-wave detecting device, wherein the pulse-wave-propagation-velocity-related-information obtaining device iteratively obtains a piece of pulse-wave-propagation-velocity-related information at substantially a same time as a time when the blood-pressure monitoring means determines each monitor blood pressure value of the living subject, and wherein the output device outputs a change of the pieces of pulse-wave-propagation-velocity-related information iteratively obtained by the pulse-wave-propagation-velocity-related-information obtaining device, relative to a change of the monitor blood pressure values iteratively determined by the blood-pressure monitoring device.
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3. An arteriosclerosis-degree evaluating apparatus, comprising:
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a blood-pressure measuring device which iteratively measures a blood pressure value of a living subject;
a pulse-wave-propagation-velocity-related-information obtaining device which iteratively obtains, at substantially a same time as a time when the blood-pressure measuring device measures each blood pressure value of the living subject, a piece of pulse-wave-propagation-velocity-related information that is related to a velocity at which a pulse wave propagates through an artery of the subject; and
an output device which outputs a change of the pieces of pulse-wave-propagation-velocity-related information iteratively obtained by the pulse-wave-propagation-velocity-related-information obtaining device, relative to a change of the blood pressure values iteratively measured by the blood-pressure measuring device, wherein the pulse-wave-propagation-velocity-related-information obtaining device iteratively obtains the piece of pulse-wave-propagation-velocity-related information that is related to the velocity at which the pulse wave propagates through the artery including an aorta of the subject. - View Dependent Claims (4)
an inflatable cuff which is adapted to be worn on a portion of the subject;
a blood-pressure-value determining means for determining the blood pressure value of the subject based on a signal obtained while a pressure in the cuff is changed;
a pressure-pulse-wave detecting device which includes a pressure-pulse-wave sensor that is adapted to be pressed against a prescribed artery of the subject, and which continuously detects, through the pressure-pulse-wave sensor, a pressure pulse wave produced from the prescribed artery;
a relationship determining means for determining a relationship between magnitude of pressure pulse wave, and blood pressure, based on at least one blood pressure value determined by the blood-pressure-value determining means and at least one magnitude of the pressure pulse wave detected by the pressure-pulse-wave detecting device; and
a blood-pressure monitoring means for iteratively determining, according to the determined relationship, a monitor blood pressure value of the subject, based on a magnitude of each of heartbeat-synchronous pulses of the pressure pulse wave continuously detected by the pressure-pulse-wave detecting device, wherein the pulse-wave-propagation-velocity-related-information obtaining device iteratively obtains a piece of pulse-wave-propagation-velocity-related information at substantially a same time as a time when the blood-pressure monitoring means determines each monitor blood pressure value of the living subject, and wherein the output device outputs a change of the pieces of pulse-wave-propagation-velocity-related information iteratively obtained by the pulse-wave-propagation-velocity-related-information obtaining device, relative to a change of the monitor blood pressure values iteratively determined by the blood-pressure monitoring device.
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5. An arteriosclerosis-degree evaluating apparatus, comprising:
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a blood-pressure measuring device which iteratively measures a blood pressure value of a living subject;
a pulse-wave-propagation-velocity-related-information obtaining device which iteratively obtains, at substantially a same time as a time when the blood-pressure measuring device measures each blood pressure value of the living subject, a piece of pulse-wave-propagation-velocity-related information that is related to a velocity at which a pulse wave propagates through an artery of the subject;
an output device which outputs a change of the pieces of pulse-wave-propagation-velocity-related information iteratively obtained by the pulse-wave-propagation-velocity-related-information obtaining device, relative to a change of the blood pressure values iteratively measured by the blood-pressure measuring device;
a first heartbeat-synchronous signal detecting device which detects a first heartbeat-synchronous signal from a first portion of the subject; and
a second heartbeat-synchronous signal detecting device which detects a second heartbeat-synchronous signal from a second portion of the subject, wherein the pulse-wave-propagation-velocity-related-information obtaining device iteratively obtains the piece of pulse-wave-propagation-velocity-related information, based on a time of occurrence of a prescribed periodic point of each of a plurality of heartbeat-synchronous pulses of the first heartbeat-synchronous signal and a time of occurrence of a prescribed periodic point of a corresponding one of a plurality of heartbeat-synchronous pulses of the second heartbeat-synchronous signal. - View Dependent Claims (6, 7, 8, 9, 10, 11)
an input device which is operable for inputting a height of the subject;
a memory device which stores a predetermined relationship between height and distance difference; and
means for determining, according to the predetermined relationship between height and distance difference, stored in the memory device, the distance difference between the first and second distances, based on the height of the subject, inputted through the input device.
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11. An apparatus according to claim 5, wherein the blood-pressure measuring device comprises:
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an inflatable cuff which is adapted to be worn on a portion of the subject;
a blood-pressure-value determining means for determining the blood pressure value of the subject based on a signal obtained while a pressure in the cuff is changed;
a pressure-pulse-wave detecting device which includes a pressure-pulse-wave sensor that is adapted to be pressed against a prescribed artery of the subject, and which continuously detects, through the pressure-pulse-wave sensor, a pressure pulse wave produced from the prescribed artery;
a relationship determining means for determining a relationship between magnitude of pressure pulse wave, and blood pressure, based on at least one blood pressure value determined by the blood-pressure-value determining means and at least one magnitude of the pressure pulse wave detected by the pressure-pulse-wave detecting device; and
a blood-pressure monitoring means for iteratively determining, according to the determined relationship, a monitor blood pressure value of the subject, based on a magnitude of each of heartbeat-synchronous pulses of the pressure pulse wave continuously detected by the pressure-pulse-wave detecting device, wherein the pulse-wave-propagation-velocity-related-information obtaining device iteratively obtains a piece of pulse-wave-propagation-velocity-related information at substantially a same time as a time when the blood-pressure monitoring means determines each monitor blood pressure value of the living subject, and wherein the output device outputs a change of the pieces of pulse-wave-propagation-velocity-related information iteratively obtained by the pulse-wave-propagation-velocity-related-information obtaining device, relative to a change of the monitor blood pressure values iteratively determined by the blood-pressure monitoring device.
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Specification