It is a low-complexity technique, especially indicated for young women with partners having normal or slightly altered spermograms. This procedure involves depositing sperm, previously treated in the gamete laboratory, into the uterus to facilitate their encounter with the egg within the woman’s reproductive system. 

On the likely day of ovulation, the couple is requested to provide a semen sample. Within the CER laboratories, sperm with optimal characteristics are recovered, washed, and concentrated into a small volume. In the office, the sperm is gently introduced into the uterus using a delicate intravaginal catheter. This technique is completely painless and outpatient.

In some cases, the woman may receive slight hormonal stimulation beforehand to ensure ovulation. These cases should be monitored with ultrasound to avoid the risk of multiple pregnancies. The effectiveness of this technique is around 18% per attempt.