Patent ID: 8157800

Claim:
A system for lengthening of limbs, comprising: at least two supporting rings; a plurality of spikes mounted in each of said at least two supporting rings by spike-fixating means; said at least two supporting rings connected with one another by threaded rods which are displaced into rectilinear movement by automated drives connected with a portable block for power supply and control; each of said automated drives including a screw pair composed of one of said threaded rods and a threaded insert mounted via two bearings and movable through reducing means with a stepper motor; said portable block being provided with elements for controlling a speed and a direction of movement of each of said automated drives; means for calculation and indication of displacement provided by each of said automated drives; and a plurality of resistors for sensing a distraction or compression force, said resistors mounted on a housing of each of said automated drives over a circumference at equal distances from one another and connected through an amplification circuit and an analog-digital converter to a personal computer.