DEVICE FOR JOINTS FUNCTION RECOVERY BY MECHANOTHERAPY Russian patent published in 2008 - IPC A61H1/02 

FIELD: medical equipment.

SUBSTANCE: device includes base platform and movable platform that are intended for extremity segments fixation, and are hingedly connected together. The movable platform has angle transducer and connected by rod with electro-drive, set on the chassis. The rod is furnished with tractive resistance transducer. The electro-drive motor is connected to motion volume optimiser. The optimiser consists of converter with separate control of speed sign and module, speed optimiser, first and second Schmitt-trigger circuits, limit selector of motion volume, moment of resistance limit selector, cadence pulse generator, and logic block that includes commutator, data trigger, and EXCLUDING OR gate. The tractive resistance transducer output is connected to the first Schmitt-trigger circuit functional input. Control input of the Schmitt-trigger is connected with moment of resistance limit selector output. Output of the angle transducer, linked to the hinge, is connected to the second Schmitt-trigger circuit functional input. Control input of the Schmitt-trigger is connected with limit selector of motion volume. Outputs of the both Schmitt-trigger circuits are connected to the logic block inputs; its output is connected to the converter input that controls rotation speed sign. Input of the converter, controlling speed module, is connected to output of angular velocity optimiser, its input is connected to the angle transducer. The base platform is furnished with position transducer, and linked with device chassis via resilient rod, furnished with tractive resistance transducer, by means of vibrogear. The vibrogear has possibility to set vibration in motion plane of extremity segments and connected to output of additional motion volume optimiser, analogous to the first one. The motion volume optimiser inputs are connected to tractive resistance transducer and position transducer of base platform. Rod of the movable platform is also made resilient. Tractive resistance transducers of both resilient rods are made two-component to measure the load in orthogonal planes. Both outputs of each two-component transducer are connected to additionally introduced calculators of mean-square tractive resistance. Their outputs are connected each to functional input of respective motion volume optimiser. As a result, the device leads the joint motions, best conforming to natural motions, makes counter micro-motions of the epiphysis relative to biological rotation axis, applies non-traumatic load on respective joint muscles, and optimises motions volume.

EFFECT: increase in device efficiency.

1 dwg