Arteriostenosis diagnosing apparatus
First Claim
1. An arteriostenosis diagnosing apparatus, comprising:
- an inferior limb blood pressure measuring device which measures an inferior limb blood pressure at a first measuring point on an inferior limb of a living subject;
a superior limb blood pressure measuring device which measures a superior limb blood pressure at a second measuring point on a superior limb of the subject;
an inferior and superior limb blood pressure index determining means for determining an inferior and superior limb blood pressure index of the subject, based on the inferior limb blood pressure measured by the inferior limb blood pressure measuring device and the superior limb blood pressure measured by the superior limb blood pressure measuring device;
a first pulse wave velocity related information obtaining means for obtaining first pulse wave velocity related information that is related to a first velocity at which a first pulse wave propagates through a first interval whose one end is defined by the first measuring point and which includes an upstream portion of the inferior limb that is located upstream of the first measuring point as seen in a direction of flow of arterial blood in the inferior limb;
a second pulse wave velocity related information obtaining means for obtaining second pulse wave velocity related information that is related to a second velocity at which a second pulse wave propagates through a second interval which does not include any portions of the inferior limb; and
an arteriostenosis judging means for judging, when the inferior and superior limb blood pressure index does not fall in a prescribed abnormal index range, when the first pulse wave velocity related information falls in a prescribed normal information range, and when the second pulse wave velocity related information falls in a prescribed abnormal information range, that there is a possibility that the inferior limb has arteriostenosis.
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Accused Products
Abstract
An arteriostenosis diagnosing apparatus which measures an ankle blood pressure at an ankle 12 of a patient and a brachium blood pressure at a brachium 14, so that the measured ankle and brachium blood pressure values are used to calculate an ankle and brachium blood pressure index ABI, and additionally measures a first pulse wave propagation velocity PWV1 with respect to the ankle 12 as a first measuring point and the brachium 14 as a second measuring point, and a second pulse wave propagation velocity PWV2 with respect to the patient'"'"'s heart and the brachium 14. The arteriostenosis diagnosing apparatus includes an arteriostenosis judging device 100 which judges, even if the index ABI may fall in a prescribed normal range or a prescribed alert range and the first velocity PWV1 falls in a prescribed normal range, that there is a possibility that an inferior limb including the ankle 12 at which the ankle blood pressure has been measured, may have arteriostenosis, if the second velocity PWV2 falls in a prescribed abnormal range.
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Citations
6 Claims
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1. An arteriostenosis diagnosing apparatus, comprising:
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an inferior limb blood pressure measuring device which measures an inferior limb blood pressure at a first measuring point on an inferior limb of a living subject;
a superior limb blood pressure measuring device which measures a superior limb blood pressure at a second measuring point on a superior limb of the subject;
an inferior and superior limb blood pressure index determining means for determining an inferior and superior limb blood pressure index of the subject, based on the inferior limb blood pressure measured by the inferior limb blood pressure measuring device and the superior limb blood pressure measured by the superior limb blood pressure measuring device;
a first pulse wave velocity related information obtaining means for obtaining first pulse wave velocity related information that is related to a first velocity at which a first pulse wave propagates through a first interval whose one end is defined by the first measuring point and which includes an upstream portion of the inferior limb that is located upstream of the first measuring point as seen in a direction of flow of arterial blood in the inferior limb;
a second pulse wave velocity related information obtaining means for obtaining second pulse wave velocity related information that is related to a second velocity at which a second pulse wave propagates through a second interval which does not include any portions of the inferior limb; and
an arteriostenosis judging means for judging, when the inferior and superior limb blood pressure index does not fall in a prescribed abnormal index range, when the first pulse wave velocity related information falls in a prescribed normal information range, and when the second pulse wave velocity related information falls in a prescribed abnormal information range, that there is a possibility that the inferior limb has arteriostenosis. - View Dependent Claims (2, 3, 4, 5)
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6. An arteriostenosis diagnosing apparatus, comprising:
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an inferior limb blood pressure measuring device which measures an inferior limb blood pressure at a first measuring point on an inferior limb of a living subject;
a superior limb blood pressure measuring device which measures a superior limb blood pressure at a second measuring point on a superior limb of the subject;
an inferior and superior limb blood pressure index determining device which determines an inferior and superior limb blood pressure index of the subject, based on the inferior limb blood pressure measured by the inferior limb blood pressure measuring device and the superior limb blood pressure measured by the superior limb blood pressure measuring device;
a first pulse wave velocity related information obtaining device which obtains first pulse wave velocity related information that is related to a first velocity at which a first pulse wave propagates through a first interval whose one end is defined by the first measuring point and which includes an upstream portion of the inferior limb that is located upstream of the first measuring point as seen in a direction of flow of arterial blood in the inferior limb;
a second pulse wave velocity related information obtaining device which obtains second pulse wave velocity related information that is related to a second velocity at which a second pulse wave propagates through a second interval which does not include any portions of the inferior limb; and
an arteriostenosis judging device which judges, when the inferior and superior limb blood pressure index does not fall in a prescribed abnormal index range, when the first pulse wave velocity related information falls in a prescribed normal information range, and when the second pulse wave velocity related information falls in a prescribed abnormal information range, that there is a possibility that the inferior limb has arteriostenosis.
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Specification