Apparatus for freezing by means of a cryogenic liquid biological products placed in straws

摘要

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.