A processing tool, especially drilling tool, includes a processing element acting on a workpiece and a connection for a handling device, especially a robot. The apparatus comprises an enclosure having top, bottom, and side walls and an entrance and an exit. The inner liner includes a passageway extending longitudinally therethrough, where a catheter can be advanced through the passageway. The device may be used, for example, to ablate protruding portions of spinal disks. The temperature in the refrigerating chamber can be accurately controlled, the loss of cold air can be minimized and the structures for supplying water into the icemaker and the dispenser can be simplified.