Ernst Gräfenberg Ernst Gräfenberg Ernst Gräfenberg (September 26, 1881 in Adelebsen near Göttingen, Germany – 28 October 1957 in New York City, United States) was a German-born physician (medical doctor) and scientist. He is known for developing the intrauterine device (IUD), and for his studies of the role of the woman's urethra in orgasm. The G-spot is named after him. Gräfenberg studied medicine in Göttingen and Munich, earning his doctorate on 10 March 1905. He began working as a doctor of ophthalmology at the university of Würzburg, but then moved to the Department of Obstetrics and Gynaecology at the University of Kiel,
Ernst Wertheim the upper vagina, and pelvic lymph nodes, but leaving the ovaries intact. Afterwards, Wertheim surgery became a fairly common, although risky procedure for cervical cancer. He conducted important research of gonorrhea in the female genital tract, and was the first physician to demonstrate the presence of gonococcus in the peritoneum. Also, he discovered that gonococcus grows best on a culture of agar mixed with human blood serum. Wertheim died in 1920 in Vienna. He received an honorary grave at the Zentralfriedhof. A type of hysterectomy forceps, called the "Wertheim's vaginal clamp", is named after him. Ernst Wertheim Ernst Wertheim (21