Device for percutaneous placement of lumbar pedicle screws and connecting rods

摘要

A spinal surgical system comprising a dilator (28) and a tissue cutting instrument (26), wherein said dilator is provided with a recess (30) and wherein said tissue cutting instrument is deployable through the dilator. The tissue cutting instrument is provided with a blade (34) that is pivotable between an extended deployed position, wherein the blade extends through the recess of the dilator, and a retracted rest position, wherein the blade is withdrawn into the dilator.