arcing spring contraceptive diaphragm /är″king/ , a kind of contraceptive diaphragm in which the flexible metal spring that forms the rim is a combination of a flexible coil spring and a flat band spring made of stainless steel. The silicone rubber dome is approximately 4 cm deep, and the diameter of the rubber-covered rim is between 65 and 80 mm. This kind of diaphragm is prescribed for a woman whose vaginal musculature is relaxed and does not afford strong support, as in first-degree cystocele, rectocele, or uterine prolapse. Compare coil spring contraceptive diaphragm, flat spring contraceptive diaphragm. See also contraceptive diaphragm fitting.
