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,
Carl Ernst Bock clinical department. In addition to his writings on anatomical and surgical matters, in his later years Bock wrote numerous essays and books on public health. These were written in clear and strident language and addressed to a popular audience, roughly in the style of Ernst Keil's "Die Gartenlaube", and so gained him a good deal of public recognition and influence. Carl Ernst Bock Carl Ernst Bock (February 21, 1809 – February 19, 1874) was a German physician and anatomist. Born in Leipzig to anatomist Carl August Bock, he studied at the University of Leipzig, from which he graduated in 1831.