Systems and methods for crossing stenosis, partial occlusions, or complete occlusions within a body lumen. The systems generally include an elongate member such as a hollow guidewire that houses a rotatable and translatable drive shaft. The drive shaft typically has a distal portion that is advanced...http://www.google.fr/patents/US6824550?utm_source=gb-gplus-shareBrevet US6824550 - Guidewire for crossing occlusions or stenosis
