Patent ID: 8500649

Claim:
A blood pressure measuring apparatus for measuring blood vessel elasticity, comprising: a Pulse Wave Velocity (PWV) measuring module for measuring PWV, using an electrocardiogram signal and a pulse wave signal; a blood pressure measuring module for measuring blood pressure by pressurizing or decompressing a cuff; and a control unit, wherein the control unit calculates an initial pulse transit time, using the PWV at a time when the cuff is not pressurized, wherein the initial pulse transit time is determined by dividing an arterial length from the heart to a pulse wave measuring point by the PWV, the control unit calculates pulse transit time in a pressure applied cuff area when the pressure is applied by the cuff, and the control unit calculates blood vessel elasticity, using the initial pulse transit time according to mean blood pressure in an area corresponding to the arterial length, a length of an area where pressure is applied by the cuff, the arterial length, a transmural pressure in the cuff area, and an increment of pulse transmit time in the cuff area according to the transmural pressure in the cuff area.