A steerable distal support system for accessing stenosis, partial occlusions, or complete occlusions within a body lumen. The steerable distal support system generally includes an elongate member that comprises a proximal portion, a more flexible intermediate portion and a deflectable distal tip. The...http://www.google.es/patents/US7381198?utm_source=gb-gplus-sharePatente US7381198 - Steerable distal support system
