The intracytoplasmic sperm injection (ICSI) is another possible IVF treatment. It is used when the man’s sperm quality is very low.

The female eggs are extracted by puncture and then fixed under a special microscope with the help of a retaining pipette. One sperm is then taken in a thin injection’s pipette and directly injected in the egg cell.

The ICSI, also known as microinjection, copies the natural procedure of a sperm’s penetration of the egg cell. Using this method 50 - 70% of extracted eggs are fertilised. After 3 to 5 days the embryo transfer takes place. The pretreatment of the patient is the same as in an IVF. The difference is that the sperm is not mixed with the egg cells in the laboratory, instead the sperm is injected into the egg.