ICSI (Sperm microinjection)

Today, this is the most commonly used fertilisation technique. As opposed to classic IVF where the oocyte is left in specific conditions with thousands of sperm, so that it will be fertilised by one of them; this involves introducing the sperm directly into the oocyte with the help of a microneedle.

When do we use this technique?

Because of its advantages and the improvement in results it is used in practically all in vitro fertilisation cycles; however, it is particularly recommendable in the following situations:

Where there is a severe sperm disorder.

Where there is poor oocyte quality.

Where there are few or valuable oocytes.

In cycles of older women.

Where a low fertilisation rate is expected.

Where there has been no fertilisation in classic IVF cycles.

Where the sperm were obtained through a testicular biopsy.