PROBLEM TO BE SOLVED: To provide a blood pressure measuring apparatus and method which enable a highly accurate measurement of blood pressures without influence of vibration from an air bag for blocking blood synchronizing heart beating, caused by changes in the capacity of a blood vessel at a cuff upstream part acting as noise components in the measurement of systolic blood pressure using a shutdown device forming an air layer.SOLUTION: The blood pressure measuring apparatus is provided with a blood pressure cuff body 1 made up of a cuff member 2, an air bag 8 for blocking blood which presses a blood pressure measuring part as a whole, a sub air bag 9 for pressing the side of the heart and an air bag 10 for detecting pulse waves for pressing the side of the arterial downstream and pressure adjustors 26 and 27 to be connected respectively through the first and second piping 6 and 7. The shutdown device 5 is provided with an air layer formed between the air bag for blocking blood and the air bag for detecting pulse waves.COPYRIGHT: (C)2008,JPO&INPIT【課題】 空気層を形成した遮断装置により収縮期血圧測定時にノイズ成分となるカフ上流部の血管容積変化で発生する心拍に同期した阻血用空気袋の振動の影響をなくした高精度な血圧測定を行える血圧測定装置および血圧測定方法の提供。【解決手段】 カフ部材2と、血圧測定部位の全体を圧迫する阻血用空気袋8と、心臓側を圧迫するサブ空気袋9と、動脈下流側を圧迫する脈波検出用空気袋10とから構成されるカフ本体1と、第1配管6、第2配管7を介して接続される加減圧装置26、27を備えた血圧測定装置であって、阻血用空気袋と脈波検出用空気袋との間に空気層を形成した遮断装置5を設ける。【選択図】図1
