Patent ID: 7637919

Claim:
An anastomosis system for performing a gastrojejunostomy in a body, comprising: an anastomosis button, which includes two elastic and foldable circular flange portions and a tubular main body portion extending between the flange portions, to couple two lumen portions in the body to each other each of the flange portions having a circular form with a rim to increase bending strength; a housing in which the anastomosis button can be received as the flange portions are folded, wherein the housing comprises two cylindrical members, which relatively move axially to stepwise eject the anastomosis button; a guide which includes a distal end to be inserted through at least one of a mouth and an anus to a target portion in the body and a proximal end arranged on the outside of the body and which guides the housing to the target portion; incising means for incising a lumen wall of the target portion and a counterpart lumen wall to be anastomosed; inserting means for inserting one end of the housing via an incision formed in the lumen wall of the target portion into an incision formed in the counterpart lumen wall to be anastomosed; ejecting means for ejecting the anastomosis button from the housing; and expanding means for expanding the flange portions of the anastomosis button to be greater in diameter as compared to the housing, thereby holding the two lumen walls between the two flange portions.