Blood pressure estimating apparatus and method
First Claim
1. An apparatus for successively estimating an intraarterial blood pressure of a living subject, based on information non-invasively obtained from a circulatory organ of the subject, comprising:
- first means for non-invasively obtaining, from the circulatory organ of the subject, first information which relates to velocity of propagation of a pulse wave which propagates through an artery of the subject;
second means for non-invasively obtaining, from the circulatory organ of the subject, second information which relates to an area defined by a volume pulse wave from a peripheral portion of the subject; and
third means for estimating, according to a predetermined relationship between (A) blood pressure, and (B1) first information and (B2) second information, the intraarterial blood pressure of the subject, based on the first information obtained by the first means and the second information obtained by the second means.
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Accused Products
Abstract
An apparatus for successively estimating an intraarterial blood pressure of a living subject, based on information non-invasively obtained from a circulatory organ of the subject, including: a first device for non-invasively obtaining, from the circulatory organ of the subject, first information which relates to velocity of propagation of a pulse wave which propagates through an artery of the subject; a second device for non-invasively obtaining, from the circulatory organ of the subject, at least one of second information which relates to heart rate of the subject and third information which relates to an area defined by a volume pulse wave from a peripheral portion of the subject; and a third device for estimating, according to a predetermined relationship between (A) blood pressure, and (B1) first information and (B2) at least one of (B21) second information and (B22) third information, the intraarterial blood pressure of the subject, based on the first information obtained by the first device and the at least one of the second information and the third information obtained by the second device.
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Citations
14 Claims
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1. An apparatus for successively estimating an intraarterial blood pressure of a living subject, based on information non-invasively obtained from a circulatory organ of the subject, comprising:
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first means for non-invasively obtaining, from the circulatory organ of the subject, first information which relates to velocity of propagation of a pulse wave which propagates through an artery of the subject; second means for non-invasively obtaining, from the circulatory organ of the subject, second information which relates to an area defined by a volume pulse wave from a peripheral portion of the subject; and third means for estimating, according to a predetermined relationship between (A) blood pressure, and (B1) first information and (B2) second information, the intraarterial blood pressure of the subject, based on the first information obtained by the first means and the second information obtained by the second means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of successively estimating an intraarterial blood pressure of a living subject, based on information non-invasively obtained from a circulatory organ of the subject, comprising the steps of:
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non-invasively obtaining, from the circulatory organ of the subject, first information which relates to velocity of propagation of a pulse wave which propagates through an artery of the subject, non-invasively obtaining, from the circulatory organ of the subject, second information which relates to an area defined by a volume pulse wave from a peripheral portion of the subject, and estimating, according to a predetermined relationship between (A) blood pressure, and (B1) first information and (B2) second information, the intraarterial blood pressure of the subject, based on the obtained first information and the obtained second information. - View Dependent Claims (11, 12, 13, 14)
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Specification