"Shares in Carmat SA posted their biggest gain in more than seven…

"Shares in Carmat SA posted their biggest gain in more than seven years after the company got approval to sell the first-ever total artificial heart in Europe, the culmination of a 27-year effort that began with a pitch from a French cardiac surgeon to an aerospace company"

https://www.bloomberg.com/news/articles/2020-12-24/france-s-carmat-soars-as-artificial-heart-hopes-become-reality