Creating an anastomosis, or the surgical formation of a passage between two normally distinct vessels or lumens, is enhanced by an applier that introduces a ring device without the need for a separate anvil to form a hollow rivet shaped attachment. Moreover, the ring device may be advantageously formed...http://www.google.com/patents/US20050070935?utm_source=gb-gplus-sharePatent US20050070935 - Single lumen access deployable ring for intralumenal anastomosis
