Updated: 7 February 2016 Sunday
At the Autodesk Summit in January, the Bay Area e-NABLE designers recognized that
- The appearance requirements for hands and arms will vary from region to region around the world.
- The psycho-social function of an assistive device is always important but sometimes it is the most important function determining the design requirements.
- The robot and super-hero appearance of our most popular wrist-powered hands is not appropriate for some people that we would like to serve.
- For our Haiti project, hands and arms must look real (and thus will not draw unwanted attention) or they will not be used.
Cosmetic Terminal Devices for the Modular Training Arm
This variation of the Gripper Thumb Hand has advantages of
- realistic appearance
The Cosmetic Hand https://tinkercad.com/things/4kRNNkahyO0
and the 2-Part Gripper Thumb Hand https://tinkercad.com/things/kdrKncmw3YR
will work with the Modular Training Arm System and will allow an additional range of terminal devices in the e-NABLE tool box to meet specific appearance requirements.
As my OT friend David Dietz once pointed out, such a cosmetic hand can also be functional for a transradial amputee in tasks like carrying a shopping bag with the elbow flexed and grasping the bag’s handle in the cruck of the thumb. This carrying position can help prevent the prosthesis from slipping off the residual arm while carrying.
The devices were remixed using Tinkercad from the “heart hand love hand” by taherizad stl files, published on Thingiverse in Apr 25, 2015 http://www.thingiverse.com/thing:792576
These devices have the fabrication advantages of the other printed-flat devices, but the distal ends of the fingers will have a cross-grain and they may not be as resistant to breaking as the fingers of the thermoformed Terminal Devices.
STL files were updated 7 February 2016
and they can be found here
and they will be updated frequently as the designs evolve in the next few weeks.