Start-Up Spotlight: 4C Addresses Mitral Regurgitation With Unique 'Dome' Device

US firm 4C Medical Technologies is developing a unique solution to mitral regurgitation that sits outside the valve and takes advantage of the native valve's remaining function while preventing mitral regurgitation. The Minnesota-based start-up is currently funded by angel investors and "friends and family," but expects to raise a $15m Series B round in early 2018.