Patent ID: 7217244
Filing Date: 2007-05-15
Classification: A61B

Abstract:
1. A pressure-pulse-wave analyzing apparatus, comprising: a pressure pulse wave sensor which is adapted to be worn on a surface of a body of a living subject so as to detect a pressure pulse wave from the subject and which comprises a first sensing portion including a plurality of elongate flexible piezoelectric sheets each of which is formed of a piezoelectric resin and detects a first pressure pulse wave from the subject and which are arranged in a widthwise direction thereof, and a second sensing portion including a plurality of elongate flexible piezoelectric sheets each of which is formed of a piezoelectric resin and detects a second pressure pulse wave from the subject and which are arranged in a widthwise direction thereof, the second sensing portion being stacked on the first sensing portion such that the piezoelectric sheets of the second sensing portion extend perpendicularly to the piezoelectric sheets of the first sensing portion; and a synthesizing means for synthesizing a synthetic pulse wave based on one of the respective first pressure pulse waves detected by the piezoelectric sheets of the first sensing portion that has a greatest amplitude of respective amplitudes of the first pressure pulse waves, and one of the respective second pressure pulse waves detected by the piezoelectric sheets of the second sensing portion that has a greatest amplitude of respective amplitudes of the second pressure pulse waves.