Intrauterine Insemination (IUI) is one of the most commonly used Assisted Reproductive Techniques (ART) to treat infertility. It is the process of placing washed sperm, through the cervix, into the upper uterine cavity. The IUI procedure bypasses the cervix and places sperm directly into the uterus, closer to the fallopian tubes, around the time of ovulation. This way, there is a better chance that more sperm will make their way and reach the egg. In practice this is usually combined with Controlled Ovarian Hyper-stimulation so that there is more than one egg available for fertilization.