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Today, it can be considered established that the thermal scheme of the human body consists of a "core", which includes the brain, internal organs of the chest and abdominal cavities, and a "shell" consisting of skin, hypodermic matrices, and superficial muscles. The goal of the work is to design a device for slow noncontact defrosting of a limb that has received a cold injury and previously was thermally insulated from the external environment. Measurements were made of the temperature of the muscle tissue of a biological object frostbitten under experimental conditions that was previously placed in a heat-insulating material with subsequent noncontact heating with low-power microwaves. Since the heat-insulating material is ratio transparent for the microwave range, the heating effect will act directly on the sample under study. [ABSTRACT FROM AUTHOR]