Device for guiding a surgical instrument in position on a bone anchoring element comprising means of realignment of a connecting rod with the anchor member and surgical instrumentation system associated

摘要

Guide device (1) of a surgical instrument (5) having a coupling end on the head (3) of a bone anchoring element (2) and a longitudinal channel (51), wherein the head (3) of the element bone anchoring (2) a perforated longitudinal cavity (30) intended to receive a screw cap, ending said longitudinal cavity (30) in a transverse channel (31) suitable for receiving a connecting rod (4), characterized in that said device guide (1) comprises a guide rod (6) of the surgical instrument (5), of longitudinal axis A, having one end (60) consisting of two semi-tubular legs (7, 8) whose outer section (S1) is complementary to the inner section (S2) of said longitudinal cavity (30) and the inner section (S3) is at least equal to the diameter (D) of the connecting rod (4), provided the cross-section of the guide device (1) lower than the section of the longitudinal channel (51) of instr surgical umento (5) to allow the introduction and removal distally of said device.