Patent ID: 6090113
Filing Date: 2000-07-18
Classification: A61B

Abstract:
Positioning equipment for an osteosynthesis system for a spinal column comprising two elongate anchoring members (6) each designed to be anchored in a vertebra of the column, and an elongate anchoring linking element (14) designed to connect the anchoring members together, the system being designed to have an unlocked configuration in which each anchoring member (6) can turn with respect to the anchoring linking element (14) about a first axis (18) perpendicular to a longitudinal direction (9) of the anchoring member and perpendicular to a longitudinal direction of the anchoring linking element (14), and a locked configuration in which each anchoring member (6) is rigidly fixed to the anchoring linking element (14), the equipment comprising two arms (8) designed to be fixed removably to the two respective anchoring members (6) and an elongate arm linking element (31) designed to connect part (26, 36) of each arm together, wherein the arm linking element is designed to connect the arm parts, defining an extremum for the mutual separation of the arm parts (26, 36), the arm linking element (31) comprising at least one rack (32) which has teeth (34) designed to mesh with one (36) of the arm parts, the at least one rack being fixed, with the ability to rotate, to the other arm part (26).