Curved ultrasonic HIFU transducer formed by tiled segments

摘要

A curved high intensity focused ultrasound (HIFU) transducer comprising a plurality of curved composite ceramic piezoelectric tiles having opposite convex and concave surfaces, each tile having electrodes on the surfaces electrically coupled to the composite ceramic piezoelectric material, and a plurality of acoustic transmission areas located on each tile and actuated through electrodes on the convex surface, the transmission areas and electrodes being acoustically separated from surrounding areas by cuts into the composite ceramic piezoelectric material, the plurality of tiles fitting together to form a substantially continuous curved composite piezoelectric surface which transmits HIFU acoustic energy.

主权项

1. A curved high intensity focused ultrasound (HIFU) transducer comprising:
a plurality of separate curved composite ceramic piezoelectric tiles having opposite convex and concave surfaces, wherein the composite ceramic piezoelectric tiles comprise a layer of ceramic piezoelectric posts embedded in epoxy, each tile of the plurality of tiles having electrodes on the surfaces electrically coupled to the composite ceramic piezoelectric material, and a plurality of acoustic transmission areas located on each tile of the plurality of tiles and actuated through electrodes on the convex surface, the transmission areas and electrodes being acoustically separated from surrounding areas by cuts into the composite ceramic piezoelectric material, the plurality of tiles each coupled to a support frame comprising ribs that separate the tiles from one another, wherein the plurality of tiles form a curved composite piezoelectric surface configured to transmit HIFU acoustic energy.