With Intracytoplasmic Sperm Injection (ICSI) a sperm cell is directly injected into an egg that is obtained from the woman’s ovaries. When the fertilization is successful, the embryo is transferred to the woman’s uterus.
ICSI is typically used when dealing with male infertility factors, such as low sperm count, poor sperm motility or poor sperm quality or a previous vasectomy. Sometimes there are also female factors that don’t let sperm reach the egg in the fallopian tubes to get fertilized.
Sperm may be retrieved through ejaculation, through needle aspiration or through microsurgical sperm retrieval.