Two young Kenyan inventors have invented bio-robotic prosthetic arms from waste materials to help improve the lives of the physically challenged people in 2021.

Both David Gathu and Moses Kiuna were at the age of 29 when they designed a bio-robotic prosthetic arm in helping the people that have lost their limbs.

Recounting their ordeal before venturing into the invention, the duo said they were forced to drop out of college because of the expensive school fees but did not let the challenges steal their vision.

Gathu and Kiuna accomplished their dream to help their communities in a workshop in Kiambu county in Kikuyu, Kenya, north of the capital Nairobi.

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According to Face to Face Africa, the workshop was basically a shed made out of worn-out rusted iron sheets standing next to a chicken coop.

The floor was covered with gravel, making the ground outside the shop and the interior all but indistinguishable, as brown broken glass with tape all around fits the window frame.

Brain signal bio-robotic arm
Another significant thing about the invention was being the world’s first bio-robotic arm operated by brain signals. The invention, which is controlled by brain signals, has been billed as a game-changer in the lives of disabled people in Kenya.

Gathu and Kinyua’s invention was unique and different from most prosthetic technology which is powered by a person’s muscles.

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The arm works by converting brain signals into an electric current by a “NeuroNode” biopotential headset receiver. NeuroNode biopotential was originally invented to help people suffering from paralysis and speech loss.

Also, the inventors narrated that the idea to develop an electronic prosthetic came to them during the pandemic as part of their contribution towards assisting Kenya to battle the pandemic. It was initially created to help COVID-19 sanitisation efforts.

“When the virus hit our country, we decided to create a machine that could help us decontaminate surfaces. It can also be used in schools, restaurants, hospitals,” Shoppe Black quotes Kinyua as saying.

Using waste products

According to a report by Anadolu Agency, the Kenyan inventors solved two problems with their innovations, first, by using waste products to make the environment clean and safe, and helping a community of people living with disabilities.

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“People throw away a lot of things that are harmful to the environment just because they don’t work. If they don’t work, it might be just one component that’s faulty but all the other components still work and can be recycled,” Gathu said.

“We’ve recycled everything that you see here. They throw it away, we pick it up and use it. This has saved us from spending a lot of money because we’re not backed up financially by anyone to come up with our innovations.”

They picked up “junk” that people threw away – things like plastic, rubber, wiring, old computer motherboards, LED lights, USB devices, switches, optical drives, heat sinks, fans, and power supply units – components that they say could be quite expensive to purchase from a shop.

Helping the community

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Speaking about the physically challenged people, he said, “The main reason we came up with this is to help people in our community who have lost their limbs. We don’t want these people to feel like they can’t do anything, we want them to be dependent on themselves.”

The arm can do many more tasks. They say they are still perfecting their device, but lack of funds has been a challenge.

David Mathenge from the Association for the Physically Disabled of Kenya (APDK), a charity NGO, says: “Such inventions are the future of the science of artificial limbs. This is the science we need to ease the challenges people with disabilities face.”