Patent ID: 9622668
Date: 2017-04-18
CPC Classifications: A61B,G06K,G16H

Claim:
1. A method for estimating forward and reflected components of the aortic blood pressure waveform from an aortic pressure waveform obtained from a blood pressure cuff, said method comprising the steps of: a. inflating a blood pressure cuff on a brachial artery of an arm to a pressure at least as great as the diastolic pressure; b. holding the molar amount of fluid in the blood pressure cuff constant; c. sensing a sequence of cuff pressure waveforms associated with the brachial artery that result from at least one cardiac ejection cycle; d. determining the portion of the aortic pressure waveform, P, that occurs during diastole; e. finding two parameters, γ and P f. assuming a form of the incident waveform emanating from the heart, P g. calculating a reflected wave, P h. calculating a pressure wave P i. calculating the parameters, α and β, that best fit an equation of the form P j. calculating the incident wave according to α×P