(YouTube Link) Charles Okeke of Arizona has a...  ...(YouTube Link) Charles Okeke of Arizona has an artificial heart the size of a backpack. It's called the Freedom...  ...n the Mayo Clinic wired up to Big Blue. Okeke’s heart failed after a blood clot “destroyed his heart...

When Dzhana Simmons' heart became weakened and enlarged so it couldn't pump...  ...larged so it couldn't pump blood, she underwent a heart transplant. But when that heart failed, doctors scrambled to hook her up to a mac...  ...up to a machine: she survives 118 days without...