Laser-assisted hatching (L-AH) can help to increase the implantation rate of woman who has ole age and repeatedly failure.

In order to implantation, embryo need to hatch from the zona pellucida and the cell can touch with endometrium. Many women who is old age or have thicken zona pellucida can’t get pregnant due to embryo hatching is abnormal. Using laser can make a hole at the zona pellucida instantly and significantly reduce the time of embryo explore in vitro. Therefore, L-AH is the first choice of the assisted- hatching technology.