A surgical tool is provided comprising: a jaw assembly that includes a first and second elongated jaws each having a proximal end and a distal end, wherein the proximal end of the first jaw is mounted to be rotatable about a pivot axis between an open position and a closed position； first parallel side edges secured to the first jaw that extend parallel to a longitudinal first axis of the first jaw； second parallel side edges secured to the second jaw that extend parallel to a longitudinal second axis of second jaw； a slider beam that includes a cross-beam portion sized to slidably fit between the first parallel side edges and between the second parallel side edges, a first transverse beam configured to slidably engage surfaces of the first parallel side edges facing away from the second jaw, and a second transverse beam configured to slidably engage surfaces of the second parallel side edges facing away from the first jaw； a pulley rotatably mounted to the distal end of the first jaw； and a first slider cable secured to one side of the first transverse beam, the first slider cable extending about the pulley and past another side of the first transverse beam to the proximal end of the first jaw.
