DIAPHYSEAL COVER Russian patent published in 2003 - IPC

FIELD: medical engineering. SUBSTANCE: device has two plates telescopically connected to each other and holes for receiving screws, the outer one plate having groove with beads and the internal one having ribs introduceable under the beads and toothed strip on the internal side. Wrench with tommy bar and gear engageable with strip teeth of the internal plate. The beads have teeth placed in opposition to strip teeth with a pitch different from that of the strip teeth. Insert having hole for receiving screw and protrusions enters into recesses between the teeth of the bead and plate. EFFECT: increased compression accuracy; removed unused cover surface; simplified setting procedure. 5 dwg