An ablation and cutting catheter (10), which may be used for angioplasty, includes a rotary shaft (20) adapted to be driven by a rotary motor (22). The shaft (20) is free for rotation and for some axial motion. The shaft (20) is coupled to a rotational-to-axial motion converter (FIGS. 2a, 2b, 2c; 3a,...http://www.google.de/patents/US5925055?utm_source=gb-gplus-sharePatent US5925055 - Multimodal rotary abrasion and acoustic ablation catheter
