The eggs are collected directly from the fallopian tube or uterus from woman’s body and are mixed with sperm collected from man. The most fertilized egg (embryo) is then planted to the uterus again. Multiple embryo transfer is avoided to avoid the risk of multiple births. Some embryos can also be frozen to be used later, just in case of non-successful implantation of embryo.IVF treatment is really a boon for infertile couples and is one of greatest treatments for infertile couples, who cannot conceive a baby.
Egg and sperm extraction: the would-be mother must have hormones administered to her (normally by self-injfection) over a period of 4-6 weeks to hyperstimulate her ovaries into producing many eggs (normally it's just one a month). At the end of this period an extra large dose of hormones triggers (in an extra-large needle) the actual ovulation. Then the procedure is undertaken to remove the ripe eggs from the woman's ovaries with an even bigger needle. The eggs are then examined for quality (some usually get broken during collection).
For the man sperm extraction is a lot simpler. Some quality control is also necessary.
Fertilisation. The techniques are complicated, but effectively sperm and eggs are introduced to each other in petri dishes and allowed to grow over a few days. At this point any resulting embryos are examined for key features known to predict how likely they are to implant successfully into the woman's womb.
Implantation. The woman needs to have more hormone doses (usually also injected) to synchronise her body and ready it for implantation and accepting the embryos. Typically 3 or more embryos are transferred into her womb. It's then a matter of her taking it easy for 10 days or so to see how many, if any, have successfully implanted using ultrasound scans.
