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Caya® is a new barrier device.
Caya® is a single size silicone diaphragm with an oval contoured shape, and a flexible rim. The manufacturer recommends using a lactic-acid-containing gel as a lubricant. The gel is applied to the diaphragm, the rim is squeezed and the diaphragm is inserted into the vagina. It sits across the vagina and covers the cervix. One end of the rim sits high up behind the cervix and the other tucks under the pubic bone in front.
The diaphragm prevents the sperm from entering the uterus and swimming up to meet the egg and joining together to become a pregnancy.
After intercourse the diaphragm must be left in place for six hours. During this time any sperm in the vagina die due to the normal acid environment in the vagina.