Humans may all have the same overall form, but when we need to find a suitable replacement for a missing limb, it’s clear that between the variety of finger-lengths and hand-breadths, a one-size-fits-all prosthetic just wont cut it. OpenBionics puts a spin on today’s approach to prosthetics, putting forth a framework of tools that’s flexible enough to fit the spectrum of hand shapes and enables us to create our own prosthetic at home that can meet the challenge of most everyday tasks.
Minas Liarokapis of the OpenBionics team gave a talk at this year’s Hackaday SuperConference which covered the design considerations and unique features of the project. This incredible work was recognized with 2nd Prize in the 2015 Hackaday Prize. Watch Minas’ talk below, then join us after the break as we cover more details that went into developing this prosthesis.
Continue reading “OpenBionics Fabs Prosthetics as Unique as Those Who Wear Them”
[Neal Muzzy], a local member of the Cedar Valley Makers makerspace, just made news on Open Bionics for his robotic prosthetic hand called Dextrus v1.2 which he made for his friend, and wounded war veteran, [Taylor].
In just two months, [Neal] worked with his friend to make this robotic prosthetic with the goal of having it more functional and easier to use than [Taylor]’s current prosthetic. The very first prototype was made by using the open-source Dextrus design, to test fit, and control using EMG sensors. Once they determined it would work — onto customizing!
They call it Dextrus V1.2, and it works better for [Taylor] than the original — but that’s the whole point of the Open Hand project — starting with a base design, and making it better. If you’re not familiar with the Open Hand Project, it was originally crowd-funded on Indiegogo, and is now an organization to make robotic prosthetic hands more accessible to amputees. We wrote about it in Hacklet 41 – Prosthetic Projects.
Continue reading “Wounded Soldier Gets Robotic Hand Replacement”
3D printing – with the promise of low-scale manufacturing and custom parts – is ideal for the prosthetic industry, but so far prosthetic hands have been a very, very hard nut to crack. [Joel] has been working on the Open Hands Project, a project that aims to make robotic prosthetics accessible to makers, researchers, and amputees alike.
Even though the mechanisms inside the hand are fairly simple – DC gear motors retracting steel cable ‘tendons’ – [Joel] was able to pack all this equipment into a very small volume that isn’t much bigger than real, meat-based hands. To actuate the mechanical muscles in the hand, the user simply flexes a few muscles in their forearm. These electrical signals are picked up by a suite of custom electronics and tell the Open Hand what to do
In [Joel]’s Indiegogo video, he goes over what makes his robohands work with a little help from [Liam Corbett], hand amputee. Aesthetically, the Open Hand is a big improvement over [Liam]’s two-pronged hook, and with the dexterity demonstrated in the video, possibly a lot more capable.
Continue reading “3D Printed Prosthetic Hand”