Methods and apparatus for delivery of substances or apparatus to target sites located outside blood vessels within the body of a human or animal patient. A vessel wall penetrating catheter is inserted into the vasculature, positioned and oriented within a blood vessel near the target extravascular site...http://www.google.fr/patents/US6602241?utm_source=gb-gplus-shareBrevet US6602241 - Methods and apparatus for acute or chronic delivery of substances or apparatus to extravascular treatment sites
Methods and apparatus for acute or chronic delivery of substances or ...