90% of functions
A prosthesis capable of restoring 90% of the functions of the hand has been created
Alexandra Medvedev, Indicator
The biomimetic prosthesis Hannes, developed by Italian scientists for people with amputated upper limbs, is able to reproduce up to 90% of the functions of the hand. The prosthesis has performed well in tests and is ready to enter the international market. An article dedicated to the development was published in the journal Science Robotics (Laffranchi et al., The Hannes hand prosthesis replicates the key biological properties of the human hand), the cover of the issue features an image of a prosthesis.
Researchers from the Italian Institute of Technology have developed a unique biomimetic prosthetic arm system, including the hand and wrist. The device was named Hannes, scientists, orthopedists, industrial designers and patients took part in its creation. Hannes can reproduce 90% of the functions of the upper extremities. To evaluate the effectiveness and convenience, the developers conducted tests on people with limb pathologies and found that after a training period that takes less than one week, patients can already use Hannes themselves in everyday life.
How they do it, you can see here – VM.
The prosthesis is a myoelectric system that is able to adapt to various injuries of the upper extremities. A set of surface electromyographic sensors determines the activity of the remaining muscles that the patient contracts to perform movements. With the help of specially developed software and Bluetooth connection, it is possible to adjust operating parameters, such as accuracy and speed of movements, so that each user can choose the optimal mode for himself.
Hannes is able to adapt to the object being captured, and the fingers bend and arrange themselves naturally even at rest. The thumb can be oriented in three different positions to simulate a wide range of grips. The system also allows you to rotate your wrist. The prosthesis can perform a full closed grip in less than one second and at the same time develop a maximum grip force of 150 N, which is significantly superior to other existing prostheses. It can work autonomously for a whole day with a power supply of 12 V with a battery capacity of 1300 mA/h. Hannes is offered in two sizes — for right—handed and left-handed people - and is suitable for women and men.
The prosthesis has already received the CE marking, which is fundamental for its future commercialization on the European market and a condition for international sale. Researchers are currently searching for investors and companies for large-scale industrialization and production of Hannes.
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