Patent ID: 8251910
Filing Date: 2012-08-28
Classification: A61B

Abstract:
1. An apparatus for measuring a vascular viscoelasticity index, characterized in that the apparatus comprises: a pulse wave component extraction means for extracting pulse wave components of a cuff pressure; a derivative waveform forming means for time-differentiating the extracted pulse wave components to calculate primary derivative values on which a derivative waveform is formed; a first maximal value detecting means for detecting a maximal value Pb a first local maximum value detecting means for detecting a local maximum value Va a first local maximum value-based amplitude detecting means for detecting a first pulse wave amplitude value Pa a second maximal value detecting means for detecting a maximal value Pb a second local maximum value detecting means for detecting a local maximum value Va a second local maximum value-based amplitude detecting means for detecting a second pulse wave amplitude value Pa an index computing means for computing an index α indicative of a vascular viscoelasticity by a formula α={(Pb