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.
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: