Ob, pille, Diaphragma oder das gute alte. In the 1880s, a German gynecologist, Wilhelm. In 1940, one-third of all.S. Another great feature is the grip dimples on each side of the rim; these are designed to help you squeeze the diaphragm when inserting it without your fingers slipping and causing the diaphragm to spring out until it is positioned correctly inside your vagina. Caya is made from medical grade silicone which is completely safe for your body and feels silky smooth and natural. It is common for a woman to wear a larger diaphragm during menstruation.