Array-type capacitive pressure pulse wave sensor, and pulse wave measuring apparatus having the same

摘要

An array-type capacitive pressure pulse wave sensor (1A, 1B, 1C) includes m rows of lower electrodes (10) arranged in parallel with each other to extend substantially linearly in a direction approximately orthogonal to the extending direction of the artery at the time of measurement, n columns of upper electrodes (20) arranged in parallel with each other at a prescribed distance from the m lower electrodes (10) to extend in a direction crossing the extending direction of the m lower electrodes (10), and mxn capacitive elements (40) formed at intersections of the m lower electrodes (10) and the n upper electrodes (20). The mxn capacitive elements (40) are arranged in a staggered manner when the pressure detecting portion is seen in two dimensions. Thus, it is possible to provide an array-type capacitive pressure pulse wave sensor that can be manufactured inexpensively and that ensures accurate and stable measurement of the pressure pulse wave.