End tool of surgical instrument and electrocauterization surgical instrument comprising same

An end tool of a surgical instrument, the end tool comprising:

• a first jaw and a second jaw that are rotatable independently of each other;
• a first jaw pulley connected to the first jaw and formed to be rotatable around a first rotation shaft;
• a second jaw pulley connected to the second jaw, formed to be rotatable around the first rotation shaft, and formed to be spaced a certain distance from the first jaw pulley;
• and
• a blade assembly including a blade that receives a driving force and moves between a proximal end and a distal end of the first jaw, and having at least a part formed between the first jaw pulley and the second jaw pulley,
• wherein the first jaw pulley and the second jaw pulley perform a yaw motion while rotating around the first rotation shaft, and
• the first jaw and the second jaw perform an actuation motion while rotating around an actuation rotation shaft spaced apart a certain distance from the first rotation shaft.