Methods and apparatus for crossing totally to substantially occluded blood vessels by passing a redirectable wire such as a guidewire from a relatively proximal point past the occlusion within a subintimal space formed between the intimal layer and the adventitial layer of a blood vessel wall. The wire...http://www.google.fr/patents/US6221049?utm_source=gb-gplus-shareBrevet US6221049 - Methods and apparatus for crossing vascular occlusions
Methods and apparatus for crossing vascular occlusions
