Smart Shopping for Diaphragms

A diaphragm is a barrier method of contraception similar to the cervical cap. The diaphragm is a dome-shaped contraceptive device for women that is made of thin rubber in the center with a thicker, flexible rubber edge. It is filled with spermicide and fits over the cervix where the vaginal muscles hold it in place. The spermicide kills the sperm before it has a chance to meet the egg and so prevents pregnancy. It can be inserted up to 2 hours before intercourse and should be left in place for at least 6 hours afterwards. Once you have used your diaphragm, you simply rinse it with warm, soapy water and store it in its container in a cool place. Diaphragms are between 85 to 95 percent effective as a method of birth control.

What to Look for

Before you choose a diaphragm, you may want to take into account how frequently you have sex and the number of partners you have, and if you feel comfortable with this type of contraception. If you decide that a diaphragm is right for you, you will need to go to a clinic to have one fitted. An obstetrician will try a series of diaphragms ranging in size from 2 to 4 inches in diameter. The size that fits most comfortably is the appropriate one. There are a number of types of diaphragms currently available.

Diaphragms come in two types of materials, latex and silicon, which is suitable for women who are allergic to latex. There are three different types of spring diaphragm. The arcing spring type of diaphragm compresses into an arc when folded, the coil spring flattens into an oval shape and the flat spring is similar to the coil spring but is made of thinner material.

Common Pitfalls

The most common side effects from using a diaphragm are bladder infections. This is commonly thought to be due to the use of spermicide which decreases the growth of normal vaginal bacteria and promotes the growth of bacteria that produces cystitis. If you have gained or lost 10 or more pounds since you last had your diaphragm fitted, or you have given birth or had genital surgery, you will need to have your diaphragm checked to ensure that it fits comfortably and correctly. Diaphragms are not recommended for women who have previously suffered toxic shock syndrome. A diaphragm does protect you from sexually transmitted diseases such as gonorrhea, but it will not protect you from HIV or AIDS.