. "Once the tissue has been presented to the stapling mechanism, a number of methods may be used: [0229] 1) a staple or clip may be applied to join the tissue together; [0230] 2) a precurved wire fastener, which may be constructed of a NiTi alloy or other material, may pierce the tissue on one side and then pierce the tissue on the other side as it curls to capture both; [0231] 3) a curved needle wit" . . .