Patent ID: 9198584
Filing Date: 2015-12-01
Classification: A61B

Abstract:
1. A blood pressure measurement device comprising: a cuff configured to, when worn on a blood pressure measurement area, pressurize an artery in the blood pressure measurement area at a pressure of a fluid in the cuff; a piezoelectric pump configured to increase the pressure within the cuff; a deflating unit configured to reduce the pressure within the cuff; a pressure detection unit configured to detect a cuff pressure that is the pressure within the cuff; and a control unit configured and programmed to include: the applied voltage controller is configured and programmed to control the amplitude of the voltage in predetermined steps, and to apply, in a predetermined order, a voltage having an amplitude that is a value above the control amplitude by at least one step and a voltage having an amplitude that is a value below the control amplitude by at least one step so that an output of the piezoelectric pump is approximately the same as when a voltage at the control amplitude determined by the determination unit is applied.