The blood pressure inside the artery of the non view blood continual blood pressure presumption device and the non view

摘要

PROBLEM TO BE SOLVED: To provide a bloodless continuous blood pressure estimating apparatus which makes it possible to obtain high estimation accuracy with respect to an estimated blood pressure value. SOLUTION: The estimated blood pressure value EBP of the living body at the point of the time the latest pulse wave propagation time DT, etc., are determined from the pulse wave propagation time DT for the m pulse-component including the latest one, a cardiac cycle RR and volume pulse wave area ratio VR.U-time determined by a pulse wave propagation rate information calculating means 64, cardiac cycle information calculating means 66, volume pulse wave area information calculating means 68 and a rise period calculating means 70 by an estimated blood pressure value determining means 74 in accordance with an autoregressive model of which a coefficient k is previously determined and, therefore, the highly reliable estimated blood pressure value EBP may be obtained.