RETRACTION DEVICE Russian patent published in 1995 - IPC

FIELD: medical engineering. SUBSTANCE: device has strap 1 shaped into a form of an arc with locking member 3 on the idle end, L-shaped guides, movable member mounted in the guides and bent in correspondence to the strap curvature. The movable member has thrusting idle end and operating end with the surfaces coming together, its strap 1 being longitudinally bent, the movable member being made in the form of fixing rod 2 with boundary surfaces coming together to form a sharp point. The length of fixing rod 2 from the sharp point to the rest is 3-7 mm longer than that of the strap, locking member 3 being shaped into a form of screw. EFFECT: enhanced effectiveness in operating on the vertebral column. 3 dwg