Vessel sealer and divider

An electrosurgical instrument, comprising:

• a housing having a shaft attached thereto;
• a first jaw member movable relative to a second jaw member, the first jaw member attached to the shaft and relatively movable from a first open position wherein the jaw members are disposed in spaced relation relative to one another to a second closed position wherein the jaw members cooperate to grasp tissue therebetween;
• a drive assembly disposed within the housing and configured to impart movement of the first jaw member between the first and second positions upon actuation thereof;
• and
• a handle assembly having a fixed handle and a moveable handle defining a pistol-grip configuration, the moveable handle operably coupled to the housing and configured to actuate the drive assembly, wherein a combination of mechanical linkages including the fixed handle, the movable handle, and at least one link is designed to reciprocate the drive assembly to move the first jaw member between the first and second positions.