Abstract: A warming device, for warming infusion or transfusion fluids by an exothermic reaction of a reactive liquid. The device comprises a reaction chamber and a secondary chamber. The reaction chamber and the secondary chamber are aligned end on and are abutting. The reaction chamber contains a trigger and the secondary chamber contains the reactive liquid.

Abstract: A warming device, for warming infusion or transfusion fluids by an exothermic reaction of a reactive liquid. The device comprises a reaction chamber and a secondary chamber. The reaction chamber and the secondary chamber are aligned end on and are abutting. The reaction chamber contains a trigger and the secondary chamber contains the reactive liquid.

Abstract: A method for warming infusion or transfusion fluids by an exothermic reaction of a reactive liquid using a warming device. The device comprises a reaction chamber and a secondary chamber. The reaction chamber and the secondary chamber are aligned end on and are abutting. The reaction chamber contains a trigger and the secondary chamber contains the reactive liquid. The exothermic reaction results when the reactive liquid contacts the trigger leading to crystallization of the reactive liquid. The secondary chamber is compressible. An inlet is positioned between the secondary chamber and the reaction chamber to allow passage of the reactive liquid. The inlet is transversely elongate relative to the flow of the reactive liquid. A frangible or removable barrier closes the inlet. A passageway for movement of said infusion or transfusion fluids extends through reaction chamber. The passageway, the reaction chamber and the secondary chamber are all flexible.

Abstract: A method for warming infusion or transfusion fluids by an exothermic reaction of a reactive liquid using a warming device. The device comprises a reaction chamber and a secondary chamber. The reaction chamber and the secondary chamber are aligned end on and are abutting. The reaction chamber contains a trigger and the secondary chamber contains the reactive liquid. The exothermic reaction results when the reactive liquid contacts the trigger leading to crystallization of the reactive liquid. The secondary chamber is compressible. An inlet is positioned between the secondary chamber and the reaction chamber to allow passage of the reactive liquid. The inlet is transversely elongate relative to the flow of the reactive liquid. A frangible or removable barrier closes the inlet. A passageway for movement of said infusion or transfusion fluids extends through reaction chamber. The passageway, the reaction chamber and the secondary chamber are all flexible.

Abstract: A device (10) for warming infusion or transfusion fluids by an exothermic reaction of a reactive liquid, including at least one reaction chamber (11) containing a trigger, and a passageway (12) extending through said reaction chamber (11) for movement of said infusion or transfusion fluids therethrough, wherein the reactive liquid is introduced into said reaction chamber (11), being at least partially evacuated of air, to thereby initiate said exothermic reaction.