Patent Document ID: 20130345576
Application ID: 13714058
Patent Flag: 0

Claim One:
1. A method for estimating central aortic pulse pressure by a pressure pulse wave oscillation signal of a cuff, comprising: (I) providing an equation for estimating a central aortic pulse pressure; (II) measuring the pressure pulse wave oscillation signal in the cuff, comprising a brachial systolic blood pressure, a diastolic blood pressure and a waveform of pressure pulse wave oscillation signals in the cuff; (III) averaging the waveform of the pressure pulse wave oscillation signals and calibrating the averaged waveform by the systolic blood pressure and the diastolic blood pressure; (IV) analyzing the calibrated waveform of the pressure pulse wave oscillation signals to obtain a plurality of characteristic signal values, in which a characteristic signal serves as a predicting variable, and predicting variables comprising: (a) end-systolic pressure (ESP), (b) areas under a pressure tracing in systole (As), (c) areas under a pressure tracing in diastole (Ad), (d) diastolic blood pressure (DBP) and (e) heart rate (HR); and (V) obtaining an estimate of the central aortic pulse pressure by substituting values of the predicting variables of step (IV) into the equation of step (I).