A concept: The prepared male semen, either from that of the male partner (homologous insemination), or that of a sperm donor (heterologous insemination), is released into the uterine cavity of the female. This is done through a catheter after induced ovulation, and right before ovulation is meant to take place.

With this method, fertilisation of the mature oocyte takes place in the Fallopian tubes, just like during natural conception. This is the reason why the Fallopian tubes have to be intact, and the released sperm of the best possible quality.