SURGICAL INSTRUMENTATION FOR ROD REDUCTION

摘要

One embodiment includes a surgical instrument (24) comprising a first member (26) and a second member (28) that are pivotally interconnected together. The first member (26) and the second member (28) each include a proximal end (34, 38) structured for manual manipulation by an operator and a distal end (36, 40) defining a gripping nose (46) structured to engage a bone anchor (22). The instrument (24) further includes a bearing surface(51a, 51b) to contact an implantable rod (23) when the gripping nose (46) is engaged with a bone anchor (22) and to urge the rod (23) toward the bone anchor (22) when the gripping nose (46) is pivoted thereabout. A thread guide (53) is included that is engaged by threading of a rotatable member (68). The rotatable member (68) can include a swivel-mounted head (78) structured to bear against and further urge the rod (23) toward a seat (66b) in the bone anchor (23) when the rotatable member (68) is turned through the guide (53).