SHIN PROSTHESIS Russian patent published in 2018 - IPC A61F2/60 A61F2/66 

FIELD: medicine.

SUBSTANCE: shin prosthesis comprises a receiving sleeve, a calf shin, a foot in which a flat curved spring forms the front part of the foot, and the rear part of the foot is supplemented by an elastic plate fixedly fixed to the support surface. Active ankle joint actuator is included in the prosthesis, which includes a hinge body of the back folding of the foot, in which the foot bracket is pivotally mounted by means of a fixed rear fulcrum axis fixed to it, and also fixedly connected to the front part of the foot. Body has a self-locking double-acting overtaking clutch with a split disc, the cage of which is fixedly fixed in the casing. On one hand, the rear bending axis is fixedly connected to the clutch cam installed between its half discs, and the clutch lead, which surrounds the half discs, is fixedly connected to the output shaft of the rear-drive electric motor gearbox whose flange is connected to the casing. Half discs are spring-loaded and pressed against the cage, in addition, the rear bending axis on the other side is fixedly connected to the rotor of the rear bend sensor, and its stator is connected to the casing. On receiving sleeve, coaxially with the physiological axis of the knee bending, an axle is pivotally connected to the bus, which is fixed on the split hip cuff. With axis of the receiver sleeve, the rotor of the rear fader control sensor is fixedly connected, and its stator is connected to the bus. Electronic control unit of the rear back folding control channel is input to the device, wherein the rear folding control sensor and the feedback sensor in the form of a rear bend sensor are connected to the input of the adder. First and second impulse converters are connected at the output of the adder. Pulse converters are connected to a power amplifier, whose output is connected to the rear-electric drive electric motor of the rear drive, connected to the back foot bending actuator. Electronic control unit and the power supply are fixed to the receiver sleeve.

EFFECT: invention provides handicapped comfort in the process of walking due to the possibility of an automatic mode close to the natural one, perform back foot flexing during walking and continue movement with any spatial delays of the prosthetic limb, while retaining anthropomorphic folding when it is carried over the support surface.

1 cl, 2 dwg