System and sequential culture media for in vitro fertilization

A - Human Necessities – 01 – N

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A01N 1/02 (2006.01) C12N 5/02 (2006.01) C12N 5/08 (2006.01) C12N 5/06 (2006.01)

Patent

CA 2349823

Instead of immersing human reproductive cells in a single culture medium throughout the various procedures used in IVF, a process is provided by which the reproductive cells may be moved through a sequence of distinct culture media as the various IVF procedures are carried out. In one implementation, the culture media specifically formulated to provide a physical environment similar to that found within the female reproductive tract and conducive to growth and development of human reproductive cells during the various stages of the IVF process. In this regard, specifically formulated culture media can be applied to support the reproductive cells in one or more of the following procedures: oocyte retrieval and handling; oocyte maturation; ordinary fertilization; oocyte, zygote and embryo examination and biopsy; embryonic development to the eight-cell stage; embryonic development to the blastocyst stage; embryo transfer, and cryopreservation.

Au lieu d'immerger des cellules reproductrices humaines dans un seul milieu de culture tout au long des opérations utilisées dans la fécondation in vitro, la méthode de cette invention permet de faire passer les cellules reproductrices par une séquence de milieux de culture différents, tout au long des opérations de la fécondation in vitro. Dans un mode de réalisation, les milieux de culture sont spécialement formulés pour offrir un environnement physique semblable à celui présent dans l'appareil génital de la femme, et pour favoriser la croissance et le développement des cellules reproductrices humaines tout au long des différentes étapes du processus de fécondation in vitro. A cet effet, des milieux de culture spécialement formulés peuvent être utilisés comme support des cellules reproductrices dans au moins une des opérations suivantes: l'extraction et le traitement d'ovocytes, la maturation des ovocytes, la fécondation classique, la biopsie et l'examen de zygotes et d'embryons, le développement embryonnaire jusqu'à la division de l'oeuf en huit, le développement embryonnaire jusqu'au stade du blastocyste, le transfert de l'embryon et la cryoconservation.

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