PROBLEM TO BE SOLVED: To provide a sphygmomanometer apparatus and a sphygmomanometery method for improving an S/N ratio for detecting systolic pressure by effectively eliminating an influence of volume variations at the upstream part of a blood blocking air bag on a pulse wave-detecting air bag of a double-cuff method by an oscillometeric method.SOLUTION: The sphygmomanometer apparatus is equipped with a main body (100) of a cuff including a cuff fabric (5), the blood blocking air bag (1), a sub air bag (3) arranged on the side of a heart, the pulse wave detecting air bag (2) for detecting pulse waves, first piping (6) connected through a first fluid resisting device (21), a check valve (22), and a second piping (7) connected through a second fluid resisting device (11), a cuff pressure detecting part (13), a pressurization control part (19) connected to a pressurizing means (18) for increasing pressure of a cuff assembly, a depressurization control part (20) for reducing pressure, a pulse wave detecting part (14) for detecting superimposed pulse waves by converting the pulse wave to detected pulse wave signals, a blood pressure detecting part (15) for determining a blood pressure value based on an output from the pulse wave detecting part and detected cuff pressure signals, and a blood pressure display part (16) for displaying blood pressure values from the blood pressure detecting part.COPYRIGHT: (C)2008,JPO&INPIT【課題】 オシロメトリック方式によるダブルカフ方式の脈波検出用空気袋に対する阻血用空気袋の上流部の容積変化の影響をより効果的に排除し、収縮期血圧の検出のためのS/N比を向上できる血圧測定装置および血圧測定方法の提供。【解決手段】 カフ本体(5)と、阻血用空気袋(1)と、心臓側に配置されるサブ空気袋(3)と、脈波を検出する脈波検出用空気袋(2)と、第1流体抵抗器(21)を介して接続した第1配管(6)と、逆止弁(22)と、第2流体抵抗器(11)を介して接続される第2配管(7)とを備えたカフ本体(100)と、カフ圧検出部(13)と、カフ組立体の加圧を行う加圧手段(18)に接続される加圧制御部(19)と、減圧を行う減圧制御部(20)と、脈波を検出脈波信号に変換し重畳する脈波を検出する脈波検出部(14)と、脈波検出部からの出力と検出カフ圧信号とに基づき血圧値を決定する血圧検出部(15)と血圧検出部からの血圧値を表示する血圧表示部(16)とを備える。【選択図】図1
