American engineers have developed an innovative bionic prosthetic hand that not only repeats the movements of a human hand, but also transmits the sense of touch.
Engineers from Johns Hopkins University have created a unique bionic prosthetic hand that can adapt its grip to different objects and transmit the sense of touch, reports Science Daily.
It is noted that its technology allows owners not only to hold fragile or soft things, but also to receive feedback similar to what the human nervous system does.
According to the developers, the device operates on the basis of muscle signals that transmit information to the “brain” of the prosthesis, helping it determine the shape, texture and stability of objects.
“If you’re holding a cup of coffee, how do you know you’re going to drop it? Your palm and fingertips send signals to your brain that the cup is slipping.
Our system is based on neural signals – it simulates the touch receptors of the hand to create nerve messages so that the prosthetic “brain” or its computer understands whether the object is hot or cold, soft or hard, or whether it is slipping out of your hand,” explains the head of the study, Professor Nitish Thakor.
The prosthesis is equipped with a multi-finger system with flexible joints, touch sensors and an internal skeleton printed on a 3D printer. During tests, it recognized and manipulated 15 different objects with high accuracy, including plastic cups, soft toys, cardboard boxes and metal water bottles.
The creators note that they are still working on improving the prosthesis. Further developments will be aimed at improving grip strength, expanding sensory capabilities, and using new materials.
It was previously reported that during excavations, archaeologists discovered a skeleton with a prosthetic hand made of iron and non-ferrous metal.