Patent ID: 8684941

Claim:
An electronic sphygmomanometer comprising: a cuff ( 20 ) that is worn around a predetermined measurement site; a pressure sensor ( 32 ) that detects a cuff pressure signal indicating a pressure in the cuff; an angle sensor ( 60 ) that detects an angle of the cuff with respect to a predetermined reference direction; a position determining unit ( 102 ) that determines whether a height of the measurement site falls within a proper range based on an output from the angle sensor; a notification unit ( 62 , 63 ) that notifies whether the height of the measurement site falls within the proper range; a time determining unit ( 106 ) that determines whether a first time indicating a time in which the height of the measurement site continuously falls within the proper range is not less than a first reference time; and a measurement control unit ( 106 ) that controls measurement of a blood pressure based on the cuff pressure signal by taking the determination that the first time is not less than the first reference time as a first opportunity, wherein the time determining unit determines whether a second time indicating a time in which the height of the measurement site is continuously out of the proper range is not less than a second reference time longer than the first reference time, the measurement control unit starts the measurement by taking the determination that the second time is not less than the second reference time as a second opportunity, and wherein the measurement control unit completes measurement after said determination unit determines said first time or said second time has been satisfied to create said first opportunity or said second opportunity, and the notification unit notifies whether the height of the measurement site falls within the proper range while the height of the measurement site is correlated with a measurement result when the measurement control unit outputs the measurement result.