Remember When? 1994.
The patient, an unnamed 62-year-old from the south of England, was treated at the world-famous Papworth Hospital in Cambridgeshire.
He had only months to live when doctors offered him the chance of being a guinea-pig for the new titanium and plastic device, manufactured in America.
Known as the Left Ventricular Assist Device (LVAD) it is not a replacement for the human heart. It is essentially an electrical pump which does most of the work of the pumping chamber of the heart, the left ventricle.
During the four-hour operation the LVAD was placed in the wall of the man's abdomen and connected to his heart.
The operation was performed by an 11-man team led by top heart surgeons Sir Terence English and John Wallwork.
Sir Terence (pictured) had previously carried out Britain's first successful heart transplant on entertainer Keith Castle in 1979.