Device for distraction of vertebral bodies during operation, comprising one holding arm attached to movable sleeve

摘要

The device (2) is assembled of a guide bar (4) with a square-shaped cross section and several elements (6, 8) for keeping the vertebral bodies in the required position during an operation. A first holding unit (19) designed as a bar with a curved and hollow upper end (18) suitable for the accommodation of the shaft of the distracting screw is permanently joined to the guide bar (4). At least one second arm (30) is attached to a sleeve (10) which can be slid along the bar (4) and locked in the required position with a lever (12).