PROBLEM TO BE SOLVED: To provide a blood pressure measurement apparatus capable of measuring blood pressure without imposing burden on a subject.SOLUTION: A blood pressure measurement apparatus includes: a cuff 10 mounted on a measurement region of a subject for pressurizing a blood vessel of the measurement region a pulse wave detection part 30 incorporated in the cuff that has a light emitting element for emitting light to a blood vessel and a light receiving element for receiving light reflected from the blood vessel, and detects a pulse wave signal indicating the volume of the blood vessel a pressurization/decompression part 40 for pressurizing or decompressing a cuff pressure which is a cuff internal pressure a pressure detection part 50 for detecting the cuff pressure and a control part 60 for controlling the cuff pressure and calculating a blood pressure value. The control part has a first measurement mode in which a first cuff pressure is applied, the cuff pressure is controlled so that a pulse wave signal is kept constant, and a first blood pressure value is measured, and a second measurement mode in which a second cuff pressure greater than the first cuff pressure is applied, the cuff pressure is controlled so that the pulse wave signal is kept constant, and a second blood pressure value is measured. A magnification ratio of the first blood pressure value to the second blood pressure value is calculated as a conversion factor.COPYRIGHT: (C)2016,JPO&INPIT【課題】被測定者に負担を掛けずに血圧測定できる血圧測定装置を提供する。【解決手段】被測定者の測定部位に装着し、測定部位の血管を圧迫するカフ10と、カフに内蔵され、血管に光を出射する発光素子および血管から反射した光を受光する受光素子を有し、血管の容積を示す脈波信号を検出する脈波検出部30と、カフの内圧であるカフ圧を加圧または減圧する加減圧部40と、カフ圧を検出する圧力検出部50と、カフ圧を制御して血圧値を算出する制御部60とを備え、制御部は、第1のカフ圧を印加して脈波信号が一定保持されるようカフ圧を制御して第1の血圧値を測定する第1の測定モードと、第1のカフ圧よりも大きい第2のカフ圧を印加して脈波信号が一定保持されるようカフ圧を制御して第2の血圧値を測定する第2の測定モードとを有し、第1の血圧値と第2の血圧値との倍率を換算係数として算出する。【選択図】図1
