The present invention relates to a heat exchange circuit (30) suitable for promoting heat exchange to/from a physiological fluid. The circuit (30) comprises at least two walls (32 and 34) which rest on each other and are sealed so as to form a duct (36) able to contain a flow of physiological fluid. Each one of the at least two walls comprises, during use, a pattern of corrugations (320 and 340). The corrugations have, at least along sections, a preferential direction. The pattern of corrugations of one wall is positioned so as to be superimposed at least partially on the pattern of corrugations of the other wall so as to form an angle γ between the respective preferential directions, γ ranging between 70° and 110°. Finally at least one of the walls is designed to transfer heat to/from the flow of liquid. The invention relates moreover to a thermal device suitable for use together with the heat exchange circuit. The thermal device (50) comprises two plates (52 and 54), at least one of which is thermally active and which are shaped so as to obtain intimate contact with the walls of the heat exchange circuit, at least in the zones coinciding with the respective patterns of corrugations.La présente invention porte sur un circuit déchange de chaleur (30) approprié pour favoriser un échange de chaleur vers/à partir dun fluide physiologique. Le circuit (30) comprend au moins deux parois (32 et 34) qui sont en appui lune contre lautre et sont scellées de façon étanche de façon à former une conduite (36) apte à contenir un écoulement de fluide physiologique. Chacune des au moins deux parois comprend, durant lutilisation, un motif dondulations (320 et 340). Les ondulations ont une direction préférentielle, au moins le long de sections. Le motif dondulations dune paroi est positionné de façon à se superposer au moins partiellement sur le motif dondulations de lautre paroi de façon à former un angle γ entre les directions préférentielles respectives, γ se trouvant dans la plag
