Intracytoplasmic injection using IMSI

The IMSI (intracytoplasmic morphologically selected spermEjaculated spermatozoa and secretions during the male orgasm. injection) technique is an evolution of ICSIFrom English "Intra-Cytoplasmic Sperm Injection." Assisted fertilization by microscope, where a single sperm is injected directly into the oocyte. ICSI is indicated in cases of male fertility problems, so if there are only very few normal sperm in the sperm or the fertilization capacity of sperm is extremely small.; it allows a better selection of the spermatozoonReproductive cell produced by the male genitalia (testes). which is injected into the oocyteA female reproductive cell. At birth, the ovaries contain 1 to 2 million oocytes. At puberty, there are no more than 400'000 to 500'000 left. Only 400 to 500 will reach maturity and ovulation at a rate of  one per month until menopause. All the others will finally degenerate at various stages of development. by using a microscope at high magnification (up to 1000X).

This technique is used when the morphological defects of the spermatozoonReproductive cell produced by the male genitalia (testes). (such as vacuoles) are not visible at conventional magnification (400X).

The short film below shows some examples of spermatozoa observed in the IMSI.