DEVICES, SYSTEMS AND METHODS FOR ACUTE OR CHRONIC DELIVERY OF SUBSTANCES OR APPARATUS TO EXTRAVASCULAR TREATMENT SITES

摘要

Methods and apparatus for delivery of substances or apparatus to target sites. A vessel wall penetrating catheter (11) is inserted into the vasculature, positioned and oriented with a blood vessel near the target extravascular site and a penetrator (85) is advanced from the catheter so as to penetrate outwardly through the wall of the blood vessel in the direction of the target site. Thereafter, a delivery catheter (12) is passed through a lumen of the penetrator to the target site. A desired substance or apparatus is then delivered to or obtained from the target site.