A contraceptive implant is an implantable medical device used for the purpose of birth control. The implant may depend on the timed release of hormones to hinder ovulation or sperm development, the ability of copper to act as a natural spermicide within the uterus , or it may work using a non-hormonal, physical blocking mechanism. As with other contraceptives, a contraceptive implant is designed to prevent pregnancy , but it does not protect against sexually transmitted infections. The contraceptive implant is hormone-based and highly effective, approved in more than 60 countries and used by millions of women around the world. The typical implant is a small flexible tube measuring about 40mm in length and is inserted under the skin typically in the upper arm by a health care professional. After it is inserted it prevents pregnancy by releasing hormones that prevent ovaries from releasing eggs and thicken cervical mucous.
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