Dextra / Fertility treatments / In Vitro Fertilization (IVF) / AHA, assisted hatching Open Close table of contents Ovulation Induction Insemination In Vitro Fertilization (IVF) Intra cytoplasmic sperm injection (ICSI) Fertilization Blastocyst Culture AHA, assisted hatching Embryo implantation Embryo freezing Side effects and risks of in vitro fertilization (IVF) Egg Freezing Donor Treatments Treatment with Donor sperm Egg Donation Treatment Donated Embryos Embryo Diagnostics Mental wellbeing and support AHA, assisted hatching Assisted Hatching is a technique where the embryo’s outer shell, called the zona pellucida, is opened or thinned to facilitate embryo implantation. This procedure can be beneficial if the zona pellucida is noticeably thicker or tougher than usual, as it can help the embryo to better attach to the uterine lining.