The diaphragm is a reusable flexible rubber cup that is filled with spermicide and self-inserted over the cervix prior to intercourse to prevent pregnancy. The device is left in place several hours after intercourse. The diaphragm is a prescription device fitted by a health care professional. Unlike condoms, the diaphragm does not protect against sexually transmitted diseases.
John D. Jacobson, MD, Professor of Obstetrics and Gynecology, Loma Linda University School of Medicine, Loma Linda Center for Fertility, Loma Linda, CA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.
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