Transmedics' "heart in a box" has been used to preserve at least 15 hearts taken from dead patients in the the U.K. and Australia. The device increases the supply of donated hearts, which stands at about 2,400 per year in the U.S., where the technology is awaiting FDA approval. Currently, artificial hearts are cut out of the body of brain-dead patients whose bodies are still functioning. Transmedics recently received $20 million in equity funding from 11 investors, pushing its total fundraising haul to around $120 million since 2009. More