Patent ID: 9138152
Filing Date: 2015-09-22
Classification: A61B

Abstract:
1. An electronic blood pressure meter comprising: a cuff to be wrapped around a measurement area of a measurement subject; an adjustment unit that adjusts a pressure in the cuff by controlling a piezoelectric pump that uses a piezoelectric vibrator to supply a fluid to the cuff; a driving control unit that gradually changes the pressure in the cuff by performing driving control on the adjustment unit; a pressure detection unit that detects a cuff pressure indicating the pressure in the cuff; a blood pressure determination unit that determines a blood pressure value based on the cuff pressure detected by the pressure detection unit; a circumferential length detection unit that detects a circumferential length of the measurement area; a battery that supplies power to various units; and a decrease detection unit that detects a voltage decrease value for the battery during blood pressure measurement, wherein based on the circumferential length and the voltage decrease value detected in an initial inflation period when the blood pressure measurement is first started, a range of the voltage decrease value during the blood pressure measurement carried out thereafter is estimated, and wherein the detected voltage decrease value differs depending on an ambient temperature.