Infertility in couples today is not a rare problem, the cause can be from the husband, the wife or both. However, thanks to the strong development of assisted reproductive techniques, many couples have successfully treated infertility. Among them, the technique of sperm aspiration from the epididymis is being applied more and more.

Surgical sperm retrieval is performed in cases of azoospermia, meaning no sperm is found in the semen after at least two ejaculations at least 4 weeks apart. These cases are technically called azoospermia.