For couples where there may be a problem with the sperm, ICSI (Intracytoplasmic Sperm Injection) treatment can be used.
This is similar to IVF, however rather than combining the eggs and sperm and allowing the eggs to be fertilised naturally, a single sperm is injected directly into each egg. Fertilised eggs are then monitored and, at the appropriate time (Usually day five at ‘blastocyst’ stage), transferred back into the uterus.
ICSI can be used when there is a low sperm count, slow moving sperm and when an IVF fertilisation failed in-spite of good quality sperm. The development of ICSI means fertilisation is possible even with semen samples that have a very low sperm count. The average fertilisation rate per egg injected is about 60-70%.