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Pads designed to provide heat or cold to an area of the human body by circulating liquids. These pads are usually made of several layers of flexible materials (e.g., natural fibers, plastics) sealed in a fabric or plastic outer covering; the pads include a set of or channels appropriate to circulate warm or cold liquids from an external pump. Heating/cooling pads are mainly used to alleviate pain, help in treating muscle spasms and joint stiffness, to cool feverish patients, and to prevent or induce hypothermia. Dedicated circulating liquid pads are conformed in a variety of shapes and sizes according to the anatomic part to be heated or cooled.
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