This treatment is required to males who suffer from a blockage in the vas deferens, which blocks the sperm flow, thereby obstructing the process of natural fertilization during coitus. Here, the semen is extracted from the epididymis and then used for fertilization or stored for future usage.
Many makes suffer from obstructed azoospermia, where the sperm cannot be located and extracted from the epididymis either. Then this process includes the extraction of the testicular tissue with the help of a needle from the testis. Then the sperms are extracted from the testicular tissue.