PROBLEM TO BE SOLVED: To calculate blood pressure from a pulse wave from which an error caused by a change in the pressurization speed of cuff pressure is eliminated.SOLUTION: An electronic blood pressure meter 100 is provided with: a cuff to be disposed around the periphery of the measurement part of a person to be measured an adjustment unit for adjusting pressure within the cuff by controlling a pump for supplying fluid into the cuff a control unit for controlling the adjustment unit so that, during the measurement of blood pressure, the pressure within the cuff is increased at a constant speed according to a target pressurization speed a pressure detection unit for detecting a cuff pressure representing the pressure within the cuff a pulse wave detection unit 118 for detecting a pulse wave superposed on the cuff pressure a blood pressure calculation unit for calculating blood pressure on the basis of the detected cuff pressure and of a pulse wave amplitude and a target change unit 114 for changing in a variable manner the target pressurization speed. The blood pressure calculation unit changes the pulse wave amplitude so as to correct an error in the pulse wave amplitude caused by a change in the target pressurization speed and calculates blood pressure on the basis of the cuff pressure and the changed pulse wave amplitude.COPYRIGHT: (C)2013,JPO&INPIT【課題】カフ圧の加圧速度の変化による誤差を排除した脈波から血圧を算出する。【解決手段】電子血圧計100は、被測定者の測定部位の周囲に巻付けられるカフと、カフ内に流体を供給するためのポンプを制御することにより、カフ内の圧力を調整するための調整部と、血圧測定中に、加圧速度目標に従ってカフ内の圧力が等速加圧されるように調整部を制御する制御部と、カフ内の圧力を表わすカフ圧を検出するための圧力検出部と、カフ圧に重畳する脈波を検出するための脈波検出部118と、検出されるカフ圧と、脈波振幅とに基づいて血圧を算出するための血圧算出部と、加圧速度目標を可変に変更する目標変更部114と、を備える。血圧算出部は、加圧速度目標の変更による脈波振幅の誤差を補正するように脈波振幅を変更し、カフ圧と変更後の脈波振幅とに基づいて血圧を算出する。【選択図】図2
