Another important early figure was German surgeon Wilhelm Fabry (1540–1634), "the Father of German Surgery", who was the first to recommend amputation above the gangrenous area, and to describe a windlass (twisting stick) tourniquet. His Swiss wife and assistant Marie Colinet (1560–1640 improved the techniques for Caesarean Section, introducing the use of heat for dilating and stimulating the uterus during labor. In 1624 she became the first to use a magnet to remove metal from a patient's eye, although he received the credit.