Intracorporeal anastomotic technique using a circular stapler. (a) Connection of the shaft and anvil. (b) Approximation of the shaft and anvil. The knot was released automatically during firing of the stapler. (c) The stapler was carefully removed. (d) The jejunal stump was closed using a linear stapler. (e) Schematic of approximation between the anvil and center rod. (f) Schematic of automatically removing an anchoring string during firing.