PURPOSE: An operation instrument is provided to improve reliability of operation by including a manipulation unit and a connection unit controlling operation of two jaws.CONSTITUTION: A power transfer unit includes a pitch wire. The power transfer unit includes a first jaw driving wire and a second jaw driving wire. A connection unit(140) connects a manipulation unit(110) and an end tool(120). At least some parts of the manipulation unit are extensively formed in the end tool side. An operation direction of the manipulation unit and an operation direction of the end tool are intuitively matched with each other.COPYRIGHT KIPO 2013본 발명은 수술용 인스트루먼트에 관한 것으로, 상세하게는 복강경 수술 또는 여러 다양한 수술에 사용하기 위해 수동으로 작동 가능한 수술용 인스트루먼트에 관한 것이다.