Abstract: An arrangement for secure transfer of a travelling trolley between a first and a second rail in a hoisting system is provided. The arrangement including: a first and a second engagement devices are arranged to engage when the rails are aligned; a third and a fourth engagement devices are arranged to engage when the rails are aligned; a pivotable stop which in a closed position is arranged to form a barrier in the path of the trolley, and which is coupled with the first engagement device such that the first stop is pivoted out of the path of the trolley when the first and the second engagement devices engage, such that the trolley can pass between the rails; a pivotable second stop which in a closed position is coupled with the third engagement device.

Abstract: A tray (100; 400; 500; 600) for accommodating a cell culture (101), such as an embryo, for use during culturing thereof and for optical monitoring of the cell culture, e.g. during in vitro fertilization comprises a carrier structure (104;404;504;604) defining at least one accommodating zone (102; 402; 502; 602) for accommodating the cell culture. At least one focal lens (110; 410; 510; 610), notably a numerical aperture increasing lens is integrally formed with the carrier structure to facilitate monitoring of the cell culture through the carrier structure. A diameter of the focal lens may exceed a diameter of the at least one accommodating zone. The focal lens may be integrally molded with the carrier structure from a thermoplastic material.

Abstract: An arrangement for secure transfer of a travelling trolley between a first and a second rail in a hoisting system is provided. The arrangement including: a first and a second engagement devices are arranged to engage when the rails are aligned; a third and a fourth engagement devices are arranged to engage when the rails are aligned; a pivotable stop which in a closed position is arranged to form a barrier in the path of the trolley, and which is coupled with the first engagement device such that the first stop is pivoted out of the path of the trolley when the first and the second engagement devices engage, such that the trolley can pass between the rails; a pivotable second stop which in a closed position is coupled with the third engagement device.

Abstract: A tray (100; 400; 500; 600) for accommodating a cell culture (101), such as an embryo, for use during culturing thereof and for optical monitoring of the cell culture, e.g. during in vitro fertilization comprises a carrier structure (104;404;504;604) defining at least one accommodating zone (102; 402; 502; 602) for accommodating the cell culture. At least one focal lens (110; 410; 510; 610), notably a numerical aperture increasing lens is integrally formed with the carrier structure to facilitate monitoring of the cell culture through the carrier structure. A diameter of the focal lens may exceed a diameter of the at least one accommodating zone. The focal lens may be integrally moulded with the carrier structure from a thermoplastic material.