Patent ID: 8814801
Filing Date: 2014-08-26
Classification: A61B

Abstract:
1. A vessel wall monitoring apparatus comprising: a first detecting unit which detects vessel diameter information based on first biological information obtained from a subject; a first producing unit which differentiates the vessel diameter information detected by the first detecting unit, to produce a vessel diameter function; a second detecting unit which detects blood pressure based on second biological information obtained from the subject; a second producing unit which performs a logarithmic operation on the blood pressure detected by the second detecting unit, to produce a logarithmic blood pressure function; and an outputting unit which produces an impedance model expression by using: the vessel diameter function; the logarithmic blood pressure function; and mechanical characteristic values including a stiffness, viscosity, and inertia in a mechanical impedance model of a vessel wall, and which calculates and outputs at least one of a stiffness, viscosity, and inertia of a vessel wall of the subject based on the produced impedance model expression.