Intracytoplasmic Sperm Injection (ICSI)

It is a micromanipulation technique consisting in the selection of a high-quality sperm, which is immobilised with a special glass micropipette under a microscope. The sperm is then sucked into the micropipette and inserted directly into the cytoplasm of a mature egg capable of fertilisation.

ICSI is recommended to couples in the following cases:

  • Andrological indications: the partner's spermiogram shows poor motility, low sperm count or poor sperm morphology, the partner's sperms were retrieved surgically (TESE, MESA) or they were cryopreserved due to fertility impairing treatment;
  • PGD/PGS;
  • Immunological infertility factor;
  • Low number of retrieved eggs;
  • Fertilisation failure during previous IVF cycle;
  • Repeated miscarriages in previous cycles;
  • Unfavourable embryo development in previous cycles;
  • Endometriosis and age over 35 years;
  • Treatment with donated oocytes.

The average success rate of egg fertilisation by ICSI ranges between 70 and 80% and in 95% cases, the couple has at least one fertilised egg at their disposal.


ICSI 1    ICSI 2 


  ICSI 4