Deterica · Prosthetic hand control · No electrodes

The hand follows
your own movement

We are developing a prosthetic hand controlled by rotation of the residual limb, without electrodes. The hand follows the position the user gives it. Two buttons set the movement range and select the grip.

Watch it move See the Deterica Kit

The Deterica hand: a five-finger prosthetic hand.

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Why this exists

This did not begin as a business plan. It began with my father

I went looking for a hand for him. What I found was a market where a good hand costs more than a car, takes months to obtain, and can require the user to learn muscle-signal control.

So I set out to build the thing I could not buy: control that works from a movement a person already has, and that the person can set up alone, at the kitchen table.

Read the story →

Oleg Haltsev · Founder, DETERICA LLC

Not a sketch

This already runs

A control method is easy to describe and hard to believe. So here is the hand that exists, and what works today.

The control works today

The app responds to movement input: the hand opens, closes, and changes grip. The videos show an earlier version of the control moving a physical prototype.

The hand exists in hardware

The control already moved a real hand. Siarhei Arefyev built that hardware, and the recordings above are of that hand.

The app is built

It runs with no kit at all. An on-screen slider and two buttons drive the same control logic, so the model is something a person can try.

It runs, and it is still a prototype

The hand in the videos is a prototype. The team built it and tested it, and it is not a product. The kit is in development, and so is the hand it controls. Nothing here is for sale today.

"It runs" means the control answers and the hardware moved. It does not mean that a person can buy this, and it does not mean that it went through a clinical trial.

The whole history →

What we offer

The app first. It needs no hardware at all

A prosthetic hand costs more than a car and takes months to obtain. Nobody should have to buy one to find out whether this control model suits them.

So the app comes first, and it is built. It runs on a phone alone: an on-screen slider and two buttons drive the control logic, and a hand on the screen follows them. There is no kit to connect, and no prosthesis to wear. A person can hold the model in their hand and see what it does.

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The app runs with no kit and no prosthetic hand
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Six grips: power grip, key, pinch, point, rock, hook. Left hand or right hand
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No account, and no server. Settings stay on the phone
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It is free. The App Store listing opens with the release

The kit is the next step, and it is in development. It puts the same control logic in a physical device. The design uses a contact fork: the user places the residual limb between two blades and rotates the fork around the sensor axis. The position goes to the app to move the virtual hand. The physical fit is not yet tested.

See the app and the kit