A surgical instrument used to cut/rupture the amniotic membrane (i.e., the amnion - the thin, tough membrane that lines the chorion and contains the foetus and the amniotic fluid) to assist in childbirth, without causing injury to the mother or foetus. It is long and shaft-like, and terminates in a sharp hook or protected blade used to rupture the membrane. It is typically made of high-grade stainless steel, and may be curved to follow the natural contours of the birthing canal into which it is inserted. Amniotic membrane rupture may also be performed using an amniotic perforator or forceps and/or a trocar. This is a reusable device.