Patent ID: 8814800
Filing Date: 2014-08-26
Classification: A61B

Abstract:
1. A method for determining a blood pressure contour curve comprising: placing a cuff having a photo-plethysmographic (PPG) system over an artery in a human finger, the PPG system producing a PPG signal based on volume of the artery, the PPG system including at least one light source and at least one light detector; modifying, by a computing device, a component of the PPG signal having a frequency higher than a predefined threshold frequency by eliminating from the PPG signal an undesired portion of the PPG signal and reconstructing the PPG signal from the remaining portion of the PPG signal; the cuff pressure being controlled by one or more components of the modified PPG signal; and calculating, by the computing device, a blood pressure signal using at least the modified component of the PPG signal.