摘要:
In a device (1) for rapid pressure-freezing an aqueous sample (3), such as a biological specimen, a pressurized cooling medium can be fed into a high-pressure chamber (11) into which a sample holder (30) containing a sample (3) is inserted and which is sealed with a pressure-tight seal, to the location of the sample holder (30) held therein. The high-pressure chamber (11) comprises a viewing window structure (2) with a pressure-tight window (20), through which light can be directed from the outside onto the sample (3) located in the sample holder (30). The window (20) can comprise a transparent window element made of a high-pressure-resistant material, wherein the window element (20) is held by a pressure- and temperature-resistant window bearing provided in the high-pressure chamber.
摘要:
For cooled processing of a sample, a system for cooling the sample includes a holding device (22) for receiving the sample in a sample holder (20), as well as a cooling chamber (12) that surrounds the position (P) of the sample mounted on the holding device. Provided in the cooling chamber (12) is a window through which a tool receptacle (16) for receiving a tool (W) for processing the sample projects into the cooling chamber (12). The holding device (22) is coolable to a settable temperature by means of a fluid coolant, and ensures cooling of the sample. For this, a coolant, e.g. liquid nitrogen, flows through a coolant conduit of the holding device (22), which conduit is furnished with the coolant at the input end (31) and opens at the output end (41) into the cooling chamber (12), which in this fashion is filled with coolant gas.
摘要:
In cutting devices (10), in particular microtomes or ultramicrotomes (24), it is necessary to preset the specimen onto the knife (14). To improve the accuracy and reproducibility of this presetting operation, which is intended to ensure the quickest and most accurate possible positioning of the knife (14) relative to the specimen, a pivotable observation device (10), in particular a stereomicroscope, is provided. The observation device (10) is coupled to a pivoting device (28) that comprises a positioning device (29). The positioning device (29) is embodied in such a way that a positioning of the observation device (10) at a defined angle is possible.
摘要:
A container (2) for tissue preparation for the tissue embedding, having a base body (4), that is formed out cylindrical shaped side wall (5), a floor (6) and several bridges (50). The bridges (50) subdivide the container (2) in several sub-containers (52). The side wall (5) has a plurality of slit shaped openings (12), that extend essentially over the total height of the side wall (5).
摘要:
An apparatus (1) for tissue preparation for the tissue embedding, having a transport plate (15) that is surrounded by a housing (5). The housing defines an inner upper side (8a), a heating and cooling device (3), that is provided on the inner upper side (8a) of the housing (5) and a mechanic module (24) for turning the transport plate (15) and for raising and lowering the transport plate (15). The mechanic module (24) comprises a first motor (42) exclusively for turning the transport plate (15) around an axle (18) and a second motor (44) exclusively for raising and lowering the transport plate (15) in the direction of the axle (18).