Methods and Devices of Birth Control

Birth Control Overview

So it enables people to choose when they want to have a baby.

Also, a range of devices and treatments are available for both men and women that can help prevent pregnancy.

Although, some methods are more reliable than others. How well a method work often depends on how carefully it is used.

For example, the contraceptive pill, if used correctly, is over 99 percent effective. However, because people make mistakes, as many as 9 out of 100 women each year will become pregnant while using it.

Facts About Birth Control

Natural Birth Control Methods

Abstinence: Celibacy or sexual abstinence means avoiding sexual intercourse.

Withdrawal: Also known as coitus interruptus, this is when the man removes the penis from the vagina so that ejaculation occurs outside of the vagina. In theory, this prevents the sperm from being deposited in the vagina.

According to the United States Health and Human Services (HHS) Office for Population Affairs, each year, for every 100 women who use this method, 20 may become pregnant.

In other words, withdrawal is about 80 percent effective, but this depends on how carefully and how consistently it is used.

The penis does not need to enter the vagina for pregnancy to occur. It can happen if sperm enters the vagina during foreplay, for example.

Birth Control Devices

Birth control barrier devices prevent the sperm from meeting the egg. They may be combined with spermicide, which kills the sperm.

Male Condom

The male condom forms a barrier and prevents pregnancy by stopping sperm from entering the vagina. It is placed over the penis before sexual intercourse begins. A condom is made of polyurethane or latex.

Also, it can also help to prevent the spread of sexually transmitted infections (STIs).

However, it is around 82 percent effective. Some 18 women in every 100 may conceive if their partner uses a condom.

Furthermore, condoms are available from drugstores, supermarkets, and many other outlets. Health providers also supply them, sometimes for free.

Female Condom

The female condom, or femidom, is made of polyurethane. It has a flexible ring at each end. One fixes behind the pubic bone to hold the condom in place, while the other ring stays outside the vagina.

Spermicides may be placed in the vagina before intercourse. A spermicide kills sperm chemically. The product may be used alone or in combination with a physical barrier.

However, the female condom is 79 percent effective. Around 21 women will become pregnant each year with this method.

While, the femidom is less easy to find than the male condom. Only the FDA-approved FC2 is available in the United States. Health providers may supply them, or you can get them from a drugstore on prescription. You can also buy them online from Amazon or from the FC2 website.

Sponge

A contraceptive sponge is inserted into the vagina. It has a depression to hold it in place over the cervix. Foam is placed into the vagina using an applicator. The foam is a spermicide that destroys the male sperm, and the sponge acts as a barrier to stop the sperm from reaching the egg.

However, between 12 and 24 women out of every 100 who use the sponge may become pregnant.

It is less likely to work if a woman has already had a baby.

The Diaphragm

A diaphragm is a rubber, dome-shaped device that is inserted into the vagina and placed over the cervix.

So, it fits into place behind the woman’s pubic bone and has a firm but flexible ring that helps it press against the vaginal walls.

Also, used with spermicide, it is 88 percent effective. Used alone, it is between 77 and 83 percent effective.

Cervical cap

A cervical cap is a thimble-shaped, latex rubber barrier device that fits over the cervix and blocks sperm from entering the uterus. The cap should be about one-third filled with spermicide before inserting. It stays in place by suction.

Also, it is around 88 percent effective if used with spermicide, and 77 to 83 percent effective without.

Injections

The contraceptive injection, or “the shot,”  is a progestin-only, long-acting, reversible, birth-control drug. The name of the drug is Depo-Provera, also known as the Depo shot or DMPA.

Also, the shot is injected every 3 months at a doctor’s office. It prevents pregnancy by stopping the woman from releasing an egg.

However, the shot is 94 percent effective, and the chance of pregnancy increases as the shot wears off. It is important to remember to book another shot after 3 months to ensure its effectiveness.

It does not protect against STIs.

Birth Control Medications

For example, these medications can range from pills you can take to devices that are inserted by a doctor. You need to see a health provider to obtain most of these types of birth control.

The intrauterine device (IUD)

The intrauterine device (IUD), or coil, is a small, flexible T-shaped device that is placed in the uterus by a physician.

Contraceptive Pill

The combined contraceptive pill is taken daily. It contains two hormones, estrogen and progestin. The hormones stop the release of the egg, or ovulation. They also make the lining of the uterus thinner.

However, it is effective for between 91 and 95 percent of women on average.

Contraceptive Patch

This is a transdermal patch that is applied to the skin. It releases synthetic estrogen and progestin hormones.

Also, the patch is worn each week for 3 consecutive weeks, generally on the lower abdomen or buttocks. No patch is worn in the fourth week, to allow for the menstrual period. The patches are readily available.

However, it is estimated to be 91 percent effective.

Vaginal Ring

The contraceptive vaginal ring is a flexible, plastic ring that releases a low dose of progestin and estrogen over 3 weeks. It prevents ovulation and thickens the cervical mucus, so that sperm cannot move easily.

As, the woman inserts the ring into the vagina for 3 weeks, and then she removes it for one week, during which she will experience a menstrual period.

It is also known as NuvaRing, the trade name for a combined hormonal contraceptive vaginal ring manufactured by Organon.

However, it is 99 percent effective, but the chance of human error reduces this to 91 percent.

The Implant

An implant (often known by its brand name, Nexplanon) is a rod with a core of progestin, which it releases slowly. It is inserted under the skin of a woman’s upper arm.

While, the implant is effective for up to 4 years, but it can be removed at any time, and then pregnancy is possible.

However, it is 99 percent effective in preventing conception, but it will not protect against an STI.

Emergency “morning after” contraception

Emergency contraceptive pills, or the “morning-after pill,” may prevent pregnancy after intercourse. It prevents ovulation, fertilization, or implantation of an embryo.

However, it is different from medical methods of termination, because these act after the egg is already implanted in the womb.

Emergency contraception can be used up to 72 hours after unprotected sex. It is 95 percent effective during the first 24 hours, falling to 60 percent by 72 hours.

Although, emergency contraception should only be used when primary methods fail.

Also, some people see it as a kind of abortion, because the egg may have already been fertilized.

Permanent Contraception

Sterilization is a permanent method of sterilization.

In Females

Tubal ligation: This is a form of female sterilization. The surgeon will cut, block, or burn the fallopian tubes, or a combination of these methods, to seal them and prevent future fertilization.

However, female sterilization is over 99 percent effective.

Tubal implant: A coil is placed in the female’s fallopian tubes. Tissue grows around it, blocking the tubes. It can take 3 months to work.

In males

Vasectomy: This is surgery to make a man sterile. The tubes through which sperm pass into the ejaculate are cut or blocked.

However, it is over 99 percent effective.

It is sometimes reversible, but with a higher abundance of abnormal sperm, possibly resulting in lower fertility or birth defects.

Myths About Birth Control

Biospecimens

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Types of Biospecimens

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