Probably this: https://en.m.wikipedia.org/wiki/AbioCor https://en.m.wikipedia.org/wiki/AbioCor They technically worked but they were expensive, painful, and ba

Probably this: https://en.m.wikipedia.org/wiki/AbioCor https://en.m.wikipedia.org/wiki/AbioCor They technically worked but they were expensive, painful, and basically just kept you alive on a bed. In essence they were like a more invasive version of the iron lung but required a team to maintain. For this reason while you may have heard it used it various trials with "success" they were considered a failure in the end and rejected by the FDA. I've spoken to some people who worked on it and the feelings are pretty bittersweet. Learning from this, Abiomed later brought a heart pump called the "Impella" to market which works to assist your heart instead of replace it. This device is cool for different reasons and can actually save peoples lives instead of merely prolong them a few years. The new artificial heart in the OP is more sophisticated than the AbioCor, the science keeps improving.