Patent ID: 8216152

Claim:
A non-transitory, computer-readable medium having program instructions embodied thereon for measuring an elasticity of a finger artery in accordance with a pulse wave of a finger artery, wherein the instructions, when executed by a processor, causes the processor to perform a plurality of steps comprising: storing pulse wave data of a finger artery in a pulse wave data memory unit; storing a cuff pressure of a cuff pressing the finger artery in a cuff pressure data memory unit; calculating a normalized pulse volume (NPV) in an NPV calculating module that acquires an amplitude (ΔI) of an alternating component of a pulse wave and an average value of direct components (I) of the pulse wave from said pulse wave data memory unit and divides said amplitude (ΔI) by the average value of said direct components (I) to calculate NPV; calculating a relative cuff pressure (P r ) in a P r calculating module that acquires a cuff pressure from said cuff pressure data memory unit and calculates a difference between a cuff pressure at a maximum amplitude of a pulse wave and each cuff pressure as P r ; and calculating a linear regression slope (n) in a finger elasticity index calculating module using the following expression as an elasticity index of the finger artery (FEI): ln(NPV)=ln(b·n)−n·P r , where b is a constant.