Gamete intrauterine transfer. 
Gamete intrauterine transfer has been performed at a very limited scale until now.  The main target group of patients for such a treatment would be women with infertility due to the tubal factor, but other infertile patients could benefit also, as the procedures reduce incubation time in the laboratory and implies fertilization in vivo.  Few studies have been reported from 1982 to 1990 on the transfer of oocytes and spermatozoa directly to the uterus, and only five clinical pregnancies have been achieved.  Transfer of oocytes and spermatozoa inside a biodegradable capsule has only been performed in one study comprising 26 cycles with no ensuing pregnancies.  A critical evaluation and a status is carried out.