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KEEP them close. Women having IVF can now incubate embryos in their own bodies before they are implanted in the womb. Results from a clinical trial suggest the incubation device could work as well as conventional IVF and be far cheaper.
Cylindrical in shape, INVOcell is held in the vagina by a flexible diaphragm. The embryos are kept in an inner chamber at body temperature and gases such as carbon dioxide and oxygen diffuse in and out at levels matching natural fertilisation. After five days the embryos will have grown into balls of about 100 cells. The device is then removed and doctors choose the embryo that looks healthiest to implant.
In a US trial of 40 women, the device performed almost as well as conventional incubation, with 65 per cent of the women becoming pregnant regardless of the method used. Fifty-five per cent who used in-body incubation went on to give birth compared with 60 per cent who had the standard method. “We were very pleased with the results,” says Kevin Doody of the Center for Assisted...
