Ultraschallvibrator und ultraschallendoskop

Ultrasonic vibrator and ultrasonic endoscope

Vibrateur à ultrasons et endoscope à ultrasons

Abstract

An ultrasound transducer includes: an acoustic matching layer 2 bending with a predetermined curvature; a plurality of piezoelectric elements 3 disposed on an inner face 2n on the side of a curvature center C of the acoustic matching layer 2 in such a manner that the plurality of piezoelectric elements 3 bend; a plurality of wirings 9 including respective one ends electrically connected to the plurality of piezoelectric elements 3, respectively; a substrate 5 to which respective other ends of the plurality of wirings 9 are electrically connected; and a holding member 4 provided at a position partway of the plurality of wirings 9 between the plurality of piezoelectric elements 3 and the substrate 5, the holding member 4 being configured to hold the plurality of wirings 9 with a pitch W2 that is equal to or smaller than an arrangement pitch W1 of the plurality of piezoelectric elements 3.

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