Patent ID: 6561985
Filing Date: 2003-05-13
Classification: A61B

Abstract:
An apparatus for automatically measuring a blood pressure of a living subject, comprising:an inflatable cuff which is adapted to be wound around a portion of the subject for obtaining a cuff pulse wave including a plurality of heartbeat-synchronous pulses occurring to the cuff while a pressure in the cuff is changed; a blood-pressure determining means for determining a blood pressure of the subject based on a change of respective amplitudes of the heartbeat-synchronous pulses of the cuff pulse wave successively obtained by the inflatable cuff while the pressure in the cuff is changed; a display device which has a two-dimensional screen consisting of a plurality of picture elements; and an amplitude displaying means for successively displaying, on the two-dimensional screen of the display device and while the pressure of the cuff is changed in the current blood-pressure measuring operation, the amplitude of each of the heartbeat-synchronous pulses of the cuff pulse wave successively obtained by the inflatable cuff while the pressure in the cuff is changed, such that the amplitude of said each heartbeat-synchronous pulse of the cuff pulse wave is comparable with at least one prior amplitude of at least one prior heartbeat-synchronous pulse of the cuff pulse wave that is prior to said each heartbeat-synchronous pulse.