[Micro-insemination--a novel treatment method for sterility in severe male subfertility].

Microinsemination is a new method of treating sterility. It improves the chance of fertilization in cases of severe male subfertility and of unexplained infertility. Fertilization is assisted by opening the zona pellucida with a microneedle (PZD), by introducing a small number of sperms with a micropipette into the perivitelline space (SUZI) or by direct insertion of a spermatozoon into the ooplasm (ICSI). We report on the first delivery achieved by microinsemination (SUZI) at the University Hospital Zurich and, as far as we know, in Switzerland.