Prosthetic hand

Body-powered prosthetic hand

Traction prosthesis: what the hand?

The design of traction prostheses doesn't contain any technically complex mechanisms or components. They aren't powered by electricity, the construction and the principle of action are quite simple. The fingers of the prosthesis are driven by special rods, which stretch and relax as the user moves their stump. People have started actively using them by the XIX century. Traction prostheses were the solution for rich people back then. Most of the audience had been using cosmetic prostheses. The game has dramatically changed in 2013.

When did prosthetic hands become the devices that we know today?

The carpenter from the Republic of South Africa has made 3D printed traction prosthesis. His name is Richard Van As.

The engineering community has noticed that that's the new way to create cheap and effective devices for rehabilitation and habilitation. It was a new gold rush for following specialists. Everyone rushed to print their designs on a 3D printer. The early Motorican specialists took Richard's design as a basis, modified it, improved and presented their own prototype. It had a better grip on things and allowed the user to interact with more items and it was 3D printed as well. Since then Motoricans have been improving and upgrading devices.

What types of traction prostheses are there?

There are some types of traction arm prostheses that differ from each other. Their operating principle depends on the level of amputation.

Traction forearm prosthesis (CYBI Hand)

The grip of this device`s fingers is caused by the elbow joint movement. The user bends his arm at the elbow and the fingers of the prosthesis also compress. This type is used when the arm is amputated above the hand joint level and for some reason the bionic arm is not suitable for the case.

The special one here is the transcarpal prosthesis. This is the device that performs the function of the hand and it's ruled by the elbow. A transcarpal prosthesis hand is a type of artificial hand that is attached to the wrist area, specifically at the level of the carpal bones (the small bones in the wrist).

Traction hand prosthesis (CYBI Fingers)

The grip here is ruled by the hand joint. The construction works similar to the previous model. The user bends his hand and the pinch happens.

Special thing here is the ability of partial finger prosthetics. Motoricans can manufacture traction prostheses for people who have lost 3 or more fingers.

What is the difference between traction and bionic prostheses?

Each solution has both strengths. Let's get into it.

Traction prostheses
➕ Waterproof
➕ Easy to use
➕ Suitable for kids
➕ Need no electricity

Bionic prostheses
➕ Stronger
➕ A number of gestures are supported
➕ Modern technology
➕ Controlled with mobile app

Which one is better?

It's up to you, depending on your motives and purposes.

Using active traction prostheses from Motorica, you can swim and play sports. They are suitable even for the smallest cyber heroes, because we are the only company that provides prosthetics for children from 2 years old.

We have already produced more than 9,000 prosthetics; they are already used by cyborgs in 19 countries. There are no reasons to keep waiting. You can become our cyber team member!