Through a catheter when sperm are washed and placed into the uterus then that procedure is called IUI which stands for Intra Uterine Insemination. By masturbation, the male partner produces a semen sample.
Separated from the prostaglandins, white blood cells, seminal plasma and other debris is the sperm which are filtered out during natural intercourse.
Into the woman's vagina a speculum is inserted and a catheter with an attached syringe which contains the washed sperm is inserted into the uterus through the cervix.
The catheter and the speculum are removed when the specimen (prepared semen) is injected.
Indications for IUI
Infertility associated with endometriosis
For some couples with immunological abnormality