A uterine manipulator operable to detach the uterus and cervix from the vagina. The uterine manipulator includes an umbrella-like tip that creates a secure connection between the uterine manipulator and the uterus and cervix. The uterine manipulator also includes a pneumooccluder that enables rotation of the manipulator shaft while maintaining pneumoperitoneum. The uterine manipulator further includes a cutter that travels in a circle at the junction of the cervix and the vagina, permitting detachment of the uterus and cervix from the top of the vagina.