Lakeland Elementary student Rafael Esquivel was born with Symbrachydactyly, a condition where babies are born with short fingers, which may be webbed, or they are missing fingers. Usually this happens on only one hand, and the other hand looks typical.
Developed collaboratively by some of e-NABLE’s top designers, the Raptor Hand is designed with ease of printing and assembly in mind. Features include 3D printed snap pins, a modular tensioning system, and compatibility with both velcro and leather palm enclosures. The Raptor Hand is licensed under the Creative Commons-Attribution-Share Alike license.
All files for this design can be found on Thingiverse or YouMagine. For detailed instructions on which files to download and print, see below.
You can also use e-NABLE’s web application, the Handomatic, to easily generate the STL files that are pre-scaled to the size you need.
The Raptor Hand is intended to bring together the best and most widely tested ideas from a year of crowd sourced innovation.
The objectives in designing the Raptor Hand were as follows:
To simplify fabrication and assembly and repair for makers and recipients alike
To provide a platform and reference design for future innovations, incremental and radical
To identify a core features set and standardized dimensions embodied in accessible 3D models with progressive licensing terms that will ensure widespread availability and future development.
e-NABLE’s prior “go to” designs included the Cyborg Beast, the Talon hand, the Ody hand and the Talon Beast. To these classics, the Raptor Hand by e-NABLE adds the following features:
Easier and quicker printing (no supports required)
Easier and quicker assembly (no Chicago Screws required, simplified cord installation)
An improved tensioning system (modular design, allowing for easier future development)
Improved documentation (coming soon)
All of the parts needed for assembly can be found easily in most areas, but if you prefer to get everything in one place, 3D Universe offers kits with all of the assembly materials needed for producing a Raptor Hand.
Jalal Yazji is a student in the Cullen College of Engineering at the University of Houston. He saw the possibility to be able to help others and was frustrated that their was not an eNABLE Chapter in Houston. Mr. Yazji stated that this was a project that he wanted to do out of the goodness of his heart
Daniel Barry is a University of Houston student in the Cullen College of Engineering. He worked with Jalal Yazji to use a 3-D printer to create a RAPTOR hand for Rafael. When asked why he decided to help, he stated,"They had a chance to use a 3-D printer to create prosthetic robotic hands for everyday use. Why would I not help? Like how cool is this?"
This is their third child that they have helped. They have printed the RAPTOR hand twice. They have also made an RIT arm that is elbow actuated. The name is a result of the students interests in characters and animals.
Rafael's mom said that she feels extremely blessed and grateful that the University of Houston students were willing to help him.
Rafael's stepfather stated that he wanted to learn how to fix and repair the RAPTOR hand so that when Rafael needs his help, that he would be able to help.