FIELD: heating.SUBSTANCE: device contains the blocking unit designed for blocking fluid flow, and containing the upper cassette plate, in which the inlet and the guide elements are performed for guiding the fluid flow. The lower plate of the cassette has the release element and guide elements for directing fluid flow, located at the distance from the elements. The heater is disposed between the upper and the lower plates of the cassette and heats the fluid flow, guided by elements. The air filter is installed outside the elements and intended for the air bubbles release into the atmosphere, forming in the fluid flow. The device contains the blocking unit, blocking the fluid flow channel, performed at the flow channels of the cassette plates, it supports the flow fluid under the positive pressure and blocks the fluid flow channel, when a negative pressure inside the cassette is occured. The blocking unit contains the extension part, formed in the cassette plate and through which the fluid flow goes. The film element is made in the part of the cassette plate and attached outside to the channels and to the channel. The extension part is formed in the cassette plate, through which the fluid flow, introduced through the guide elements, is going. The section of the locking device is surrounded by the inner fencing edge, performed within the area surrounded by the outer fencing edge, projecting in the cassette plate part. The mentioned section communicates with the release element, being in communication with the channel.EFFECT: heating of the infusion solution or blood, and blocking the fluid flow.6 cl, 9 dwgИзобретение относится к медицинскому нагревательному устройству для подогрева и подачи инфузионного раствора или крови. Устройство содержит блокирующее средство, предназначенное для блокирования потока текучей среды, и содержащее верхнюю пластину кассеты, в которой выполнены впускной элемент и направляющие элементы, предназначенные для направления потока текучей среды
