End tool and surgical instrument

Abstract

Provided are an end tool and a surgical instrument. The end tool of a surgical instrument, which is coupled to one end of a connection part of an external device, includes a first jaw rotatable about a pitch rotation shaft and a second jaw relatively rotatable with respect to the first jaw about a second jaw rotation shaft disposed in the first jaw parallel to the pitch rotation shaft, wherein the first jaw and the second jaw are opposed to each other and perform an opening or closing operation, and the first jaw rotates about the pitch rotation shaft but rotates in a direction opposite to a rotation direction of the second jaw in response to the second jaw rotating about the second jaw rotation shaft.