Apparatus for freezing by means of a cryogenic liquid biological products placed in straws
AssigneeL'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
InventorsNicole Angelier, Joseph Bionda, Jean-Yves Thonnelier
Life of this patent
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Abstract
A thermally insulated enclosure (1) containing a bath (20) of liquid nitrogen. The enclosure contains a case (3) of flat shape provided with a thermal insulation (4) whose performance is lower than that (2) of the enclosure (1) and comprising, on one hand, supports (17) for supporting straws in a horizontal plane, and, on the other hand, a heater (8) for heating the lower wall (7) and/or the cover (6) of the case. Application in the freezing of animal or human embryos.
Claims11
An apparatus for freezing biological products placed in straws, the apparatus comprising an enclosure having a first thermal insulation for containing a bath of cryogenic liquid, a case of flat shape including a lower wall and a cover and located in the enclosure and provided with a second thermal insulation, the thermal insulating power of said first insulation being substantially greater than that of said second insulation, the case comprising means for supporting straws in a horizontal plane and means for heating at least one of elements consisting of the lower wall and the cover of the case.
Dependencies are inferred from the claim text.