An acoustic ablation catheter driven by a rotating shaft (18) includes a rotary-to-axial-motion converter (210), which includes a rotary driver (220, 420) in the form of a shell (222, 422) defining an inner surface (228, 428) which features a depressed groove (230, 330, 430). A follower (250,...http://www.google.se/patents/US5810860?utm_source=gb-gplus-sharePatent US5810860 - Easily fabricated rotary-drive acoustic ablation catheter
