ADAM'S Hand goal is to potentiate the user providing him many info gathered from his surroundings and enhancing his connection with the environment, using technologies such as Wi-fi, Bluetooth and so on. IoT and home automation are actually at the user fingertips.
Adam's Hand is designed in a modular way to adapt to different amputation levels: a single device to fulfill each user needs. The plug&play modules, easily connectable, can be purchased separately.
Myoelectric signals are gathered using Myo armband by Thalmic Labs, directly integrated into Adam's Hand. Usage data, after a pre-processing, are stocked in a cloud database and are accessible by the orthopedic, who can follow user improvements, provide him assistance and assign him specific tasks and exercises during the rehabilitation.
The innovative patent pending mechanism on which Adam's Hand is based can actuate 15 degrees of freedom with just one motor, instead of the five motors conventionally used in other prosthetic devices. The torque is automatically distributed among the fingers, that adapt to the specific form of the grasped object, developing always the most stable grasp. The transmission is based on gears, stiff and compact, that exert constant forces, independent from the fingers kinematic state.
This allows to simplify the control logic and to save on prosthesis cost, weight and dimensions.
Adam’s Hand recognizes user gestures and evaluates the strength required to actuate them through an algorithm that uses rectified and filtered EMG and 9-axis IMU signals gathered with Myo armband. These data are time-averaged and given as input to a single layer neural network that is initialized through a training phase performed at the system start.