Patent ID: 6068601
Filing Date: 2000-05-30
Classification: A61B

Abstract:
A blood pressure measuring apparatus comprising:an inflatable cuff which is adapted to be wound around a body portion of a living subject;an air pump which supplies a pressurized air to said cuff to inflate the cuff and thereby increase an air pressure in the cuff, so that the cuff presses the body portion of the subject;an air tank which is connected to said air pump;an air restrictor which is provided between said air tank and said cuff;a deflation-control valve which is provided between said restrictor and said cuff to control an amount of discharging of the pressurized air from the cuff and thereby control deflation of the cuff;a control device which controls said air pump to supply the pressurized air to said cuff while controlling said deflation-control valve to discharge a controlled amount of the pressurized air therethrough from said cuff, so as to increase the pressure of said cuff linearly at a predetermined first rate; anda measuring device which measures at least one blood pressure value of the subject based on a pulse wave which is produced from an artery of the body portion of the subject in synchronism with a heartbeat of the subject while the pressure of the cuff is linearly increased at said first rate by said control device.