Microinjection (ICSI) is an advanced technique used in IVF treatment, particularly in cases of male-factor infertility (low sperm count, or motility or morphology abnormalities) or when fertilisation has failed in previous attempts. Unlike conventional IVF (in vitro fertilisation), in this procedure a single sperm cell — selected as the highest-quality and most motile using specialised microscopes in the laboratory — is placed inside a collected mature egg with the aid of a fine needle (the microinjection method). Thanks to this method, the sperm does not need to penetrate the egg's membrane on its own, and the likelihood of fertilisation is significantly increased, supporting treatment success.
Once this procedure, carried out on the day of egg collection, is complete, the laboratory checks the following day whether fertilisation has occurred and conveys this information to the prospective parents and their doctor. Over the following days, our embryologists meticulously monitor the cell divisions of the resulting embryos, and the highest-quality embryo or embryos among those continuing to develop healthily are selected for transfer or freezing.
