An ultrasonic instrument 212, comprising: a housing 222 having a proximal end； a movable handle 236 adjacent the housing； an ultrasonic transducer 230 attachable to the housing so that the ultrasonic transducer is supported within and extends from the proximal end of housing 222； a jaw assembly 232 disposed at a distal end of the instrument, the jaw assembly having a clamp that is moved by movement of the movable handle 236, the jaw assembly including a cutting jaw 258； a vibration coupler 250 including a distal end 256 and a proximal end configured to operatively engage the ultrasonic transducer 230, the cutting jaw 258 being integral with the distal end of the vibration coupler, and the clamp, cutting jaw, housing and movable handle being packaged as an integral unit requiring no assembly by the user prior to use.
