An end effector assembly with increased clamping force for a surgicalinstrument including a hollow shaft having a proximal end and a distal end, acleviscoupled to the distal end of the hollow shaft, a flat support coupled to theclevis, adeflection member, a procedural member assembly rotatably coupled to the flatsupport and a pair of actuation means attached to the procedural memberassemblyand slidable relative to the hollow shaft for rotationally moving theproceduralmember assembly between a closed and an open position wherein the deflectionmember engaged the actuation means. The deflection member may be integral withthe clevis, coupled to the clevis and the flat support, coupled to just theflat support,may be adjustable or rotatable or coupled to the hollow shaft.
