Patent ID: 8747326

Claim:
A manual pressurization electronic sphygmomanometer comprising: a cuff to be wrapped around a predetermined body site; a manual pressurization unit that pressurizes a pressure in the cuff through a manual operation by a user; a pressure sensor that detects a cuff pressure signal representing the pressure in the cuff; a specific component detection unit that detects a synthetic wave of a manual fluctuation wave and a pressure pulse wave as a specific component from the cuff pressure signal obtained during the pressurization; a derivation processing unit that derives a pressurization target value based on the detection result of the specific component detection unit; and a notification unit that notifies to urge the pressurization up to the pressurization target value, wherein the derivation processing unit comprises: a first calculating portion that calculates an interpolation curve of the manual fluctuation wave for a portion of the specific component from waveforms before and after the specific component; a second calculating portion that calculates a pulse wave component by subtracting the interpolation curve from the specific component; an estimating portion that estimates a systolic blood pressure value based on an amplitude of the pulse wave component; and a determining portion that determines a value obtained by adding a predetermined value to the estimated systolic blood pressure value as the pressurization target value.