COMPRESSION-DISTRACTION APPARATUS Russian patent published in 2003 - IPC

FIELD: medical engineering. SUBSTANCE: device has two frames each having two arches connected to each other with threaded tie rods. Units for fastening perosseous threaded rods are mounted on threaded tie rods. Rotation unit and reposition unit are mounted between two frames. Device for measuring dynamometric load is mounted on the lower frame. A unit for fastening perosseous threaded rods has holders fixed on threaded tie rod. The holders are designed as rectangles with openings and deviated orthogonal radial sampler equal to one half of perosseous threaded rod diameter. One holder has threaded hole and screws over threaded tie rod. Another holder has smooth hole and is put on threaded tie rod having one end shaped as quadrate on the length of 5 mm. The holders are on threaded tie rod are additionally fastened with nuts on both sides, producing self- tightening effect. EFFECT: simplified and reliable design. 2 dwg