https://techcrunch.com/2019/01/14/open-bionics-closes-5-9m-series-a-for-its-affordable-and-cool-bionic-limbs/

The world wowed a few years ago when a very clever startup from Bristol, UK, came up with 3D printed bionic limbs for amputees. Uniquely, the limbs were lightweight, cheap to make and could even be made into Iron Man-style arms to enthuse amputee children.

They went on to sign a deal with the huge UK National Health Service to bring new technologies to amputees, announced at a Techcrunch Crunch Disrupt.