On July 2nd 2001 the AbioCor self-contained artificial heart is first implanted. The AbioCor artificial heart was developed by AbioMed. It was fully implantable within a patient, due to a combination of advances in miniaturization, biosensors, plastics and energy transfer. The AbioCor ran on a rechargeable source of power. The internal battery was charged by a transcutaneous energy transmission (TET) system, meaning that no wires or tubes penetrated the skin, reducing the risk of infection. However, because of its size, this heart was only compatible with men who had a large frame. It had a product life expectancy of 18 months. The first implantation was on Robert Tools, he died 151 days later, after having a fatal cerebrovascular accident. Time magazine awarded the AbioCor its Invention of the Year award in late 2001.