The implant was complicated further because doctors had to replace the first mechanical heart with a smaller model.

Behind them beat the mechanical heart of a gigantic generator.

Or can the mechanical heart only prolong a person's dying process?

All five patients who received the most commonly used mechanical heart, the Jarvik 7, have died within two years.

Extra reserves of blood were needed and held in the mechanical heart's chambers, for a man's own heart was not equal to the task.

"I heard you have a mechanical heart yourself."

You are, of course, referring to the incident when your mechanical heart failed you.

In the United States, a mechanical heart is used for the first time in a human patient.

The very air hummed, throbbed like the giant mechanical heart of the city that it actually was.

The longest survivor lived 512 days, when the mechanical heart failed.