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device for kryochirurgische interference, especially for the tumorbehandlung
device for kryochirurgische interference, especially for the tumorbehandlung
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机译：冷冻疗法，特别是用于肿瘤的装置
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摘要
The invention relates to a cryoinstrument which is provided for carrying out cryosurgical interventions in the area of human and veterinary medicine, especially for treating tumors, and in the area of phytopathology and which is connected to a connecting device of a cryogenic appliance or system. The inventive cryoinstrument is comprised of a housing (1) in which a line is located that is provided for the direct flow (2) and for the return flow (3) of a cryogenic medium, e.g. liquid nitrogen. The housing has at least one closed end piece (4) which forms a working surface (5) with an exterior side (6) for cooling a tissue, and has a temperature sensor (7). In order to be able to constantly maintain the minimal temperature, in particular, between -40° C. and -196° C., with a low level of cryogenic medium loss on the working exterior side of the cryoinstrument which is in contact with the biological tissue, especially cancer tissue, the invention provides that an element is arranged in the housing (1) which has a porous structure (8) that is, for example, comprised of copper (cuprum) and whose degree of porosity and pore size, in a dimension ranging from approximately 10 mum to 15 mum, increases from the interior in a direction toward the exterior.
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