liver are normally kept on ice to slow down their metabolism, a risky process that only buys doctors about 14 hours of time before they need to be transplanted. More than 2,000 livers are tossed every year because of oxygen deprivation or damage endured in the cold preservation process, according to the CEO of OrganOX, the company created around the new device. In the U.S. and Europe, there are about 30,000 patients awaiting new livers, many of whom will die before they can get one.