A surgical instrument configured to perform circumcision includes a hollow body having each of an anterior open end and an axially opposed posterior open end. A dome shaped member is attached in a detachable manner to the anterior end of the hollow body and has a generally semispherical shape. One or more apertures are formed through a wall of the dome shaped member and are sized to pass urine therethrough. An elongated handle is centered on the longitudinal axis and has a portion thereof positioned adjacent a juncture with one of the anterior end of the hollow body and the apex of the dome shaped member being weaker than any other portion of the body or the generally dome shaped member, whereby a reciprocation of the elongated handle causes the elongated handle to fracture at the juncture and become detached from the hollow body or the generally dome shaped member.
