ELECTROMECHANICAL HAND Russian patent published in 2018 - IPC A61F2/54 A61F2/56 A61F2/72 

FIELD: medicine.

SUBSTANCE: invention relates to medicine. Electromechanical prosthesis of the hand on the long stump of the forearm contains the body, the receiving sleeve, the frameworks of the first, second, third, fourth fingers and the fifth finger, made in the form of an elastic link, and the mechanism of movement of the hand with microelectro drives. Frame of the first finger is fixed on the first axis of rotation, the skeleton of the third finger and the skeleton of the fourth finger are fixed on the second axis of rotation. Frame of the second finger is fixed in the carcass of the third finger by means of the third axis of rotation, and the carcass of the fourth finger and the fifth finger are made in the form of a single block, in which the lining of the carcass of the fourth finger is made integrally with the lining of the fifth finger. First axis of rotation and the second axis of rotation are fixed in the housing. Movement mechanism of hand is made in the form of a grip mechanism and an escape mechanism. Grip mechanism is made in the form of the first microelectrodrive equipped with a microcontroller of the gripping mechanism and the executive body of the gripper mechanism of the first, second and third finger frames. First microelectrical drive and the microcontroller of the gripping mechanism are located in the casing of the gripper mechanism. Withdrawal mechanism is made in the form of a second microelectrodrive fixed to the frame of the third finger and equipped with a microcontroller of the withdrawing mechanism and an executive organ of the withdrawal mechanism of the second from the third armature of the fingers. Microcontroller of the withdrawing mechanism is located on the body of the grip mechanism, and the body of the gripping mechanism is rigidly fixed in the body. Receiving sleeve is fixed to the body through the flange. Both microelectro drives are connected to the hand control system fixed to the autonomous power supply unit, which in turn is fixed to the flange and equipped with a control device for the autonomous power supply unit. Receiving sleeve has electrodes for picking up the signal of muscle activity associated with hand control system, which is connected with the microcontroller of the grip mechanism and the microcontroller of the withdrawal mechanism.

EFFECT: invention provides reduction in the time for performing motor operations during the prosthesis of persons with disabilities after a one-sided or bilateral amputation of the arm to a long forearm stump and a reliable retention of the manipulation objects.

3 cl, 6 dwg