Case study: The prosthetic hand part 1 - notes
Shaping bones and joints ideally to match the patients connected to the persons own nerves and muscles.
Form follows function: eg: strength in the bones of the forearm or digits, flexibility in the joints, power in whatever artificial muscle will drive the function of grasp. So which function has to be aided.
Necessary cooperation between the design side and the operational side with regards to satisfactory syncing of the prosthetic.
“Rather than patenting and licensing the technology for profit, however, Richard and Ivan made the design freely available. Now over 200 people around the world have been fitted with a prosthetic they could never otherwise have afforded. Richard went on to set up his company, Robohand, and their 3D printable prosthetics now include Robofinger, Roboarm and Roboleg.“
Two low cost 3d printing materials ABS (acrylonitrile-butadiene-styrene) and PLA (polylactic acid)
The base components are connected to a motor, a drive gear and tendon mimicking wire. It is still necessary to work with a greater range of materials in order to reach the biological range of motion.