It has to be the Raptor prosthetic hand that was designed by e-Nable in the USA. They are a charity that believes in sharing their designs so that people with 3D printers can make the hands to help people who need this kind of device.
There’s a picture of the one I made on my profile page under the ‘My Typical Day’ section. That was just a sample to show what you can do with a 3D printer, but I am now signed up with e-NABLE as an official supplier and am currently waiting to be matched with someone who needs one of these hands.
I love the work they are doing because it shows how 3D printing can be used to change someone’s life.