BALLOON-TIPPED ENDOSCOPIC SYSTEM

摘要

Multi-luminal endoscopic systems (10) for sterilely delivering deployable devices (30) or obtaining bodily tissues. The system comprise an outer catheter (24) comprising a wall that encloses an outer lumen (5); an inner catheter (20) movably disposed within the outer lumen and having an inner lumen (7); a balloon-tipped catheter (26) movably disposed within the inner lumen and having a distal end and a proximal end, wherein the distal end of the balloon- tipped catheter comprises a balloon tip (15) that can be expanded to contact the wall of the outer catheter to provide a seal to prevent bodily fluids from entering the outer lumen; and a push catheter having a lumen and is located within the outer lumen. The delivery systems can comprise concentric catheters. Systems used for tissue collecting can comprise catheters with different common center.