ICSI stands for Intracytoplasmic Sperm Injection. It is an advanced assisted reproductive technology (ART) used in the process of in vitro fertilization (IVF). During ICSI, a single sperm is directly injected into an egg to facilitate fertilization.

The process begins with ovulation induction in the female partner, stimulating the production of multiple eggs. Following this, mature eggs are retrieved through a minor surgical procedure known as follicular aspiration. Simultaneously, a sperm sample is collected, either from the male partner or a donor.