Flexyhand test for filaflex tendons reversed system (Q906814)

This is quick test for a new system where the standard system of opening the wrist is reversed, in a way that the elastics keep the hand closed with the finger clenched and moving the wrist downwards makes the hand open. In this test I enlarged the channels in the fingers palm side to allow for a thicker cord such as filaflex or other strong elastic to contract the fingers. At the base of the finger I made a hole to tie the elastic. On the back of the finger and connecting into the channels in the palm there is a new channel for non-elastic cord that will open the hand when the wrist is moved downwards. Only the finger index has been done, once its proven to work well it will be further developed. With this system, the stronger the elastic and the more tension it has, the better the grip strength will be. Consequently the effort to open the hand by pushing the wrist downwards will require less or more effort depending on the tension of the elastic. With this balance of forces the user can choose how strong the grip is according to his wrist strength. A system to regulate the tension of the elastic could also be developed, perhaps using boa fasteners or similar. Another advantage of this system is that it has adaptive grip, this means that when grabbing a ball the fingers will automatically adapt to the shape of the ball thus increasing the grabbing capability. Another advantage will be that the user wont have to keep the wrist muscle in tension while holding an item, only when the hand needs to be opened so it will be an advantage for things like riding a bike or rowing or something like that Here is a video demostration by Steve Wood on how it would work with a Talon hand using Filaflex as an elastic. Talon Hand - Normally Closed https://www.youtube.com/watch?v=gPE68kLHkwY&feature=youtu.be Any feedback from people willing to test it would be great. It works best with filaflex filament as an elastic but you can also use any strong elastic, the stronger the better as long as its thickness fit through the channels at the front of the fingers? This is a remix from +Steve Wood design. Is very much a work in progress