Patent ID: 6599251
Filing Date: 2003-07-29
Classification: A61B

Abstract:
A method for monitoring blood pressure, the method comprising:a) detecting a first pulse signal at a first location on a subject and detecting a second pulse signal at a second location on the subject; b) measuring a reference blood pressure P0 and a corresponding time difference T0 between the first and second pulse signals; c) from the reference blood pressure and corresponding time difference, determining a first plurality of constant parameters in a multi-parameter equation relating blood pressure and the time-difference; d) monitoring the subject's blood pressure by periodically measuring a time difference T between the first and second pulse signals; and, e) computing an estimated blood pressure, P, from the time difference, T, using the multi-parameter equation and the first plurality of constant parameters wherein the multi-parameter equation is the calculation: P=a+bln(T) â€ƒor a mathematical equivalent thereof, where a and b are constants.