Blood-vessel-shape measuring apparatus, blood-flow-velocity measuring apparatus, and blood-flow-amount measuring apparatus
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United States of America Patent
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Sep 30, 2008
Grant Date -
Oct 26, 2006
app pub date -
Jul 28, 2005
filing date -
Jul 28, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A blood-vessel-shape measuring apparatus that can accurately measures a shape of a section of a blood vessel is provided.A blood-vessel-shape calculating means 62 calculates, based on respective echo signals detected by first and second arrays 26, 28 that are placed on a skin 20 of a brachial portion 14 as a portion of a living being such that each of the first and second arrays 26, 28 is across a brachial artery 18 located under the skin 20, respective positions of respective portions of the arterial wall that are located right below the first and second arrays 26, 28 and correspond to supersonic-wave elements 26.sub.n of the first array 26 and supersonic-wave elements 28.sub.n of the second array 28, and calculates, based on the respective positions of the respective portions of the arterial wall that correspond to the supersonic-wave elements 26.sub.n, 28.sub.n, a shape of the brachial artery 18 on an orthogonal section thereof. Thus, even if the brachial artery 18 may run, under the skin 20, in a direction that is not orthogonal to the first or second array 26, 28 or is not parallel to the skin 20, an accurate sectional shape of the brachial artery 18 can be obtained.
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