Diaphragms
Devices inserted into the vagina to lie diagonally across the cervix and vaginal vault and much of the anterior vaginal wall.
All currently available products are made of silicone
- Singa® is a dome shaped silicone diaphragm with a nylon spring ( sizes 55-
95mm (in 5mm increments)
- Caya®i s a one size silicone contraceptive device with a polymer spring
designed to fit 80% of women with a flexible rim, grip dimples and a
removal dome.
Cap
A cap fits onto the cervix to create a barrier to sperm trying to enter the cervix
FemCap which is silicone, is the only currently available cervical cap.
There are 3 sizes:
- 22mm: for clients who have never been pregnant
- 26mm: for clients who have been pregnant but not delivered vaginally
- 30mm: for cliets with at least one vaginal delivery
Spermicide
Diaphragms and Caps should be used with spermicide (nonoxynol-9, Gygel®). The manufacturer of Caya® advises use with an acid buffering lubricant, Caya® Gel which contains lactic acid, sodium lactate, cellulose and sorbic acid which acts by reducing the motility of sperm cells (the acidic gel creates a hostile environment inside the vagina) and creating an additional physical barrier in front of the cervix (cellulose is a gel forming agent).