It is used as a uterine tamponade - the mother is bleeding from where the placenta was attached in the uterus. The uterus usually contracts after delivery to close the blood vessels but long labors sometimes cause uterine atony - the uterus is tired and won't contract so the mother hemorrhages. The inflated condom balloon puts pressure against the blood vessels where the placenta was attached inside the uterus to stop the bleeding. Commercially, a Bakri Uterine Tamponade Balloon is used - this is a much cheaper and easily accessible option.