Device for Guiding a Surgical Instrument Into Position On a Bone-Anchor Element Including A Means For Realigning a Link Rod With the Anchor Element, and Related System of Surgical Instruments

摘要

A device for guiding a surgical instrument having one end for coupling to the head of a bone anchor element and a longitudinal channel, the head of the bone anchor element having a tapped longitudinal recess intended for receiving a screw cap, said longitudinal recess leading into a transverse channel capable of receiving a link rod, characterised in that said guiding device includes a rod for guiding the surgical instrument, with a longitudinal axis A, having one end comprising two semi-tubular tabs in which the outer section matches the inner section of said longitudinal recess and in which the inner section is at least equal to the diameter of the link rod, the cross-section of the guiding device being always smaller than the section of the longitudinal channel of the surgical instrument in order to allow the insertion and the removal of said device in the distal direction.