Transducer for electronic focal scanning in an ultrasound imaging device

摘要

The ultrasonic transducer contains a plurality of adjacently positioned piezoelectric segments which are arranged concentrically. Each of the segments contains a number of linear parallel grooves, whereby these grooves define spaced surface areas therebetween. Each of the surface areas comprises respectively a piezoelectric element. The individual grooves are approximately annular when the segments are assembled. They decouple the piezoelectric elements acoustically from each other. Preferably, the segments each have a triangular shape.