摘要:
A pulse wave analyzing apparatus including a cuff 12 for detecting a pulse wave from a living subject, a pressure sensor 16 for converting the pulse wave detected by the cuff 12, into an electric signal, i.e., a pulse wave signal SM, a plurality of band-pass filters 62 (BPF(1), BPF(2), . . . , BPF(n)) that have respective low-side cuff-off frequency bands differing from each other and each receive the pulse wave signal SM, a provisional rising point determining device 64 for determining respective times PS of respective provisional rising points of respective pulse waves represented by respective secondary pulse wave signals SM2 that have passed through the band-pass filters 62, and a proper rising point determining device 66 for comparing the respective times PS of respective provisional rising points with each other and thereby determining a time AS of a proper rising point based on the respective times PS of respective provisional rising points.
摘要:
An apparatus for obtaining a pulse-wave-propagation-relating information of a living subject, including a bifurcate-portion determining device which determines a bifurcate portion of an artery of the subject that is present under a skin of the subject, a pulse-wave-detect-portion determining device for determining, based on the determined bifurcate portion of the artery, a pulse-wave-detect portion of the artery from which a pulse wave is detected, a reference-point determining device for determining a reference point on the pulse wave detected from the determined pulse-wave-detect portion of the artery, and a pulse-wave-propagation-relating-information obtaining device for obtaining the pulse-wave-propagation-relating information of the subject based on the determined reference point of the pulse wave.
摘要:
An augmentation-index measuring apparatus including a cuff which is adapted to be worn on a portion of a living subject to press the portion, a fourth-order-differentiating device for subjecting a cuff pulse wave obtained from the cuff, to a fourth-order differentiation, and thereby obtaining a fourth-order-differentiated waveform, a peak-point determining device for determining, based on the fourth-order-differentiated waveform obtained by the fourth-order-differentiating device, a peak point of an incident-wave component contained in the cuff pulse wave and a peak point of a reflected-wave component contained in the cuff pulse wave, and an augmentation-index determining device for determining an augmentation index of the subject that indicates a proportion of one of a first magnitude of the cuff pulse wave at a time of occurrence of the peak point of the incident-wave component and a second magnitude of the cuff pulse wave at a time of occurrence of the peak point of the reflected-wave component, to the other of the first and second magnitudes.
摘要:
An apparatus for detecting a heart sound of a living subject, including a memory device which stores heart-sound characteristic information which is characteristic of a heart sound of the subject, a heart-sound sensor which is adapted to be worn on a body portion of the subject that is distant from a chest of the subject and which detects, from the body portion, a physical signal containing a heart-sound component and supplies the physical signal, and a heart-sound determining device for determining, based on the heart-sound characteristic information stored in the memory device, the heart-sound component contained in the physical signal.
摘要:
An arterial-pulse-wave detecting apparatus, including a plurality of pulse-wave detecting devices which are adapted to be worn on a plurality of portions of a living subject, respectively, and detect respective pulse waves that are produced in synchronism with each other from respective arteries of the plurality of portions of the subject, a memory device which stores the respective pulse waves produced in synchronism with each other and detected by the plurality of pulse-wave detecting devices, and a pulse-wave-display control device for controlling a display device to display the respective pulse waves produced in synchronism with each other and stored by the memory device, such that the respective pulse waves are superposed on each other.
摘要:
An ankle-blood-pressure measuring apparatus for measuring a blood pressure of an ankle of a living subject, including an inflatable cuff which is adapted to be worn on the ankle of the subject; a cuff-pressure changing device which decreases a pressure in the cuff from a pressure higher than a systolic blood pressure of the ankle; a distal-pulse-wave detecting device which is adapted to be worn on a distal portion of the subject that is located on a distal side of the ankle and detects a distal pulse wave produced from the distal portion; an increasing-point detecting device for detecting at least one increasing point where a magnitude of the distal pulse wave continuously detected by the distal-pulse-wave detecting device when the pressure of the cuff is decreased by the cuff-pressure changing device, significantly increases; and an ankle-blood-pressure determining device which determines a pressure of the cuff when the increasing-point detecting device detects the second increasing point, as a systolic blood pressure of one of a plurality of tibial arteries of the ankle of the subject that has stenosis.
摘要:
An arteriostenosis inspecting apparatus including a left-superior-limb-blood-pressure measuring device which measures a left-superior-limb blood pressure of a left superior limb of a living subject, a right-superior-limb-blood-pressure measuring device which measures a right-superior-limb blood pressure of a right superior limb of the subject, and a left-and-right-superior-limb-blood-pressure-ratio determining device which determines a left-and-right-superior-limb blood-pressure ratio as a ratio of one of the left-superior-limb blood pressure and the right-superior-limb blood pressure to the other.
摘要:
An arteriosclerosis evaluating apparatus including a left-superior-limb-blood-pressure measuring device including a cuff, a right-superior-limb-blood-pressure measuring device including a cuff, a ratio determining means for determining a ratio between a left-superior-limb blood pressure measured by the left-superior-limb-blood-pressure measuring device and a right-superior-limb blood pressure measured by the right-superior-limb-blood-pressure measuring device, an information obtaining device which obtains information that is related to a velocity at which a pulse wave propagates in a first body portion of the subject that includes at least a portion of the left superior limb or a second body portion of the subject that includes at least a portion of the right superior limb, and a display device which displays the left-and-right-superior-limb blood-pressure ratio determined by the left-and-right-superior-limb-blood-pressure-ratio determining device, and the pulse-wave-propagation-velocity-related information obtained by the pulse-wave-propagation-velocity-related-information obtaining device, such that the left-and-right-superior-limb blood-pressure ratio and the pulse-wave-propagation-velocity-related information are comparable with each other by a medical person.
摘要:
An ankle-blood-pressure measuring apparatus for measuring a blood pressure of an ankle of a living subject, including an inflatable cuff which is adapted to be worn on the ankle of the subject; a cuff-pressure changing device which decreases a pressure in the cuff from a pressure higher than a systolic blood pressure of the ankle; a distal-pulse-wave detecting device which is adapted to be worn on a distal portion of the subject that is located on a distal side of the ankle and detects a distal pulse wave produced from the distal portion; an increasing-point detecting device for detecting at least one increasing point where a magnitude of the distal pulse wave continuously detected by the distal-pulse-wave detecting device when the pressure of the cuff is decreased by the cuff-pressure changing device, significantly increases; and an ankle-blood-pressure determining device which determines a pressure of the cuff when the increasing-point detecting device detects the second increasing point, as a systolic blood pressure of one of a plurality of tibial arteries of the ankle of the subject that has stenosis.
摘要:
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.