It is demonstrated that if Intracytoplasmic Sperm Injection (ICSI) injury egg cytoplasm, egg possibilities low and the percentage of fecundation falls down. It is true that in some eggs it is very difficult to perform ICSI because of different causes.
This procedure is performed when:
- Hormonal treatment during stimulation may affect cytoplasm behaviour.
- Cytoplasm may be damaged when performing ICSI by technical causes.
- Zona pellucida thickness (egg shell) and its structure my be affected by hormonal treatment.
All these factors produce an injury when performing Intracytoplasmic Sperm Injection to the egg. There must be a deep pressure and the egg dye immediately, is not fertilized or my have abnormalities.
This technique consists on opening a hole with by laser in the zona pellucida of the egg. Alter that, the Intracytoplasmic Sperm Injection needle with the spermatozoon is introduced into this hole.
This technique is very successful, both in fecundation and pregnancy percentages.