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It's a sad fact that IVF technology today is still
not perfect. Only one of ten embryos we transfer in the uterus implants
successfully in the endometrium to become a baby. Why is the embryo ( Laser Hatching Video )
implantation rate only 10 ? Some doctors believe this is because the
surrounding shell of the embryo (called the zona pellucida) hardens when
it is cultured in the laboratory.
We can use "embryo surgery" called zona drilling or
assisted hatching to "soften" the shell of the embryo ( Laser Hatching Video ) . This helps to
increase pregnancy rates by improving implantation rates, since embryo
hatching is facilitated. In the past, this was done using acid (acid
Tyrode’s) , but this can damage the embryo. Today, we
can precisely create an opening in the zona safely and effectively with
the use of a laser.
This photo essay shows how we perform laser assisted
hatching in our clinic.
1.The embryo ( Laser Hatching Video ) is positioned under the microscope. This is a 4-cell Grade
A embryo; and you can see it zona ( shell) clearly.
2. The laser is used to make an opening at 3 o'clock. This is a
non-contact laser, which means the embryo is not touched at all.
3. The laser is fired again to increase the size of
the opening. Note how precisely this is done, and how accurate and
well-controlled it is.
4. The laser is fired again, so that the entire zona
is breached. This opening will help the embryo to hatch from the zona
during implantation. The laser is fired far away from the blastomeres,
so that these are not damaged at all. This embryo is now ready for
transfer into the uterine cavity, where it will hopefully implant and
become a baby. |
