This 3D printed dynamic partial finger prosthetic uses living hinges and complex geometry to create a prosthesis that will print in as a single part. The prosthetic finger was printed in nylon, and is flexible enough to bend appropriately, but sturdy enough to be functional.
Maker Sean Blaine designed his Origami Finger prosthesis because he was simply unable to afford the cost of a functional partial finger prosthetic. Blaine is a realtor by trade, but considers himself a maker at heart. After he had his idea to 3D print his finger, Blaine gave himself a year to complete the project. He estimated that the prosthetic took about 200 hours design time with 
The concept for the finger prosthetic came to him while he was talking to his father, and at the time was not a serious idea. But while he initially laughed it off, it turned out to be an idea that he came to realise was something that he could actually do. You can find the 3D model for the Origami Finger on Thingiverse.
3D printing models that have complex, movable geometry is potentially one of the more interesting ways to create 3D printed prosthesis. And the idea has tremendous potential for partial amputees in less developed parts of the world who could never dream of having a prosthetic device. While he is currently very happy with his Origami Finger, Blaine isn’t done yet because he is currently working on an Origami Thumb.
