Chinese researchers have developed a novel Multithermic Machine Perfusion System (MTMP) that significantly extends the viability of transplant organs by preserving them at temperatures below 0C for up to seven days, a substantial improvement over current methods that limit viability to hours. This breakthrough, detailed in the Journal of Medical Devices, addresses critical limitations in organ preservation technology, which typically relies on ice-cold solutions or machine perfusion systems operating above freezing. The MTMP system allows for precise control of temperature, pressure, and flow rate across a wide range, including supercooling, and has demonstrated success in preserving and reviving rat hearts and rabbit and pig kidneys. This advancement holds the potential to revolutionize organ transplantation for patients with end-stage diseases and could drastically reduce organ transplant waitlists, particularly for organs like the heart.