Abstract: It is provided a prosthetic joint (1) configured to mutually rotate two prostheses (1a, 1b) and comprising two attachments of the prosthetic joint (1) to the prostheses (1, 1b); a movement member (4) defining a rotation between the attachments (2, 3) and comprising a first actuator (41) defining a first torque; a second actuator (42) defining a second torque greater than the first torque and a kinematic mechanism (43) defining a low thrust configuration in which only the first actuator (41) is kinematically connected to the attachment (2) defining a rotational torque not greater than the first torque, and a high thrust configuration in which both actuators (41, 42) are kinematically connected to the coupling (2) defining a rotational torque substantially between the first torque and the sum of the first and second torque.

Abstract: A prosthetic device includes an articular actuator assembly including a reduction gearbox that includes an actuating part connected to an output of the reduction gearbox and an actuated part integral with a distal portion of the prosthetic device. The actuating part and the actuated part are provided with abutment and reciprocal fitting. The abutment surfaces are provided on at least one protrusion of the actuating part and on at least one protrusion of the actuated part. In a decoupled condition the protrusion of the actuating part is positioned angularly, spaced from the protrusion of the actuated part and constitutes an end stop for the extension of the distal portion and allows free flexion of the distal portion. In a coupled condition the protrusions are in abutment with each other and actuate the relative rotation of the distal portion with respect to a proximal portion of the prosthetic device in extension.

Abstract: An artificial wrist including a static body adapted to be bound to a support; a movable body adapted to be bound to an end effector; and a junction block defining an axis of rotation between the static body and the movable body and including a cable suitable to be moved by mutual rotation of the bodies and around the axis of rotation, and elastic member placing the cable under tensile stress and working in opposition to the movement of the cable to define a rest position in which the cable and the elastic member exerts a zero resulting torque on the bodies and, and an activation position in which they exert a non-zero resulting torque on the bodies and, bringing the bodies and back to the rest position.

Abstract: An ankle prosthesis is disclosed having an actuation system so as to act as a brake, modulated by motor means, proportional to the load stressing the prosthesis. The prosthesis is advantageously capable of reducing the work necessary to lift the prosthesis while maintaining an anthropometric encumbrance.

Abstract: An artificial wrist comprising including a static body adapted to be bound to a support; a movable body adapted to be bound to an end effector; and a junction block defining an axis of rotation between the static body and the movable body and comprising including a cable suitable to be moved by mutual rotation of the bodies and around the axis of rotation, and elastic member placing the cable under tensile stress and working in opposition to the movement of the cable so as to define a rest position in which the cable and the elastic member exerts a zero resulting torque on the bodies and, and an activation position in which they exert a non-zero resulting torque on the bodies and, bringing the bodies and back to the rest position.

Abstract: Underactuated prosthetic hand including base body; first and second prosthetic fingers each hinged to the base body; first control cable; actuator to move the first control cable; and for each pair of fingers second control cable having control ends associated with the first and second fingers; and transmission block to allow first control cable to control second control cable; transmission block includes guide integral with base body and defining sliding axis; movable element sliding along guide; first pulley for sliding first control cable hinged to movable element and second pulley for sliding second control cable hinged to the movable element so actuator, when moving first cable, determines moveable element translational movement to displace second control cable and the fingers; and elastic means opposing moveable element translational movement so the moveable element translational movement opposes elastic means allowing them to facilitate return to moveable element initial position.

Abstract: A prosthetic wrist unit includes a drive motor, to be interposed between the distal end of an arm prosthesis and a prosthetic terminal device for positioning the terminal device at desired orientations. A reduction mechanism includes first and second cycloidal reduction stages, connected to each other, the first stage having a central wheel connected to the motor shaft, one or more satellite wheels rotatably placed on a planet carrier, and a fixed outer ring gear, the satellite wheels being in peripheral contact with the central wheel and the outer ring gear, the planet carrier being connected to the second stage. The central wheel, the satellite wheels and the outer ring gear have smooth mutually engaging surfaces, causing a rolling of the satellite wheels on the outer ring gear by friction forces generated by radial interference between the central wheel, the satellite wheels and the outer ring gear.

Abstract: Prosthetic finger including attachment constraining the finger to external body; phalanx proximal to attachment and phalanx distal to attachment and hinged to attachment defining first axis of rotation; distal phalanx hinged to proximal phalanx on opposite side of the attachment defining second axis of rotation; actuator to control rotation of phalanges; control cable defining control end constrained to distal phalanx and controlling rotation of phalanges in first direction. For each prosthetic finger; a return cable defining first return end constrained to attachment and second return end constrained to distal phalanx; elastic body to keep the return cable under tension and oppose the control cable, so when the control cable rotates the phalanges in the first direction, it moves the return cable, loading the elastic body and allowing the elastic body to control rotation of said phalanges in second direction opposite to the first direction.

Abstract: Underactuated prosthetic hand including base body; and second prosthetic fingers each hinged to the base body; first control cable; actuator to move the first control cable; and for each pair of fingers second control cable having control ends associated with the first and second fingers; and transmission block to allow first control cable to control second control cable; transmission block includes guide integral with base body and defining sliding axis; movable element sliding along guide; first pulley for sliding first control cable hinged to movable element and second pulley for sliding second control cable hinged to the movable element so actuator, when moving first cable, determines moveable element translational movement to displace second control cable and the fingers; and elastic means opposing moveable element translational movement so the moveable element translational movement opposes elastic means allowing them to facilitate return to moveable element initial position.