Patent ID: 9629661
Date: 2017-04-25
CPC Classifications: A61B

Claim:
1. An instrument set for percutaneous stabilization of a spinal column using rods and pedicle screws, the instrument set comprising: pedicle screws having a screw head and a screw shank and a distally open recess for receiving a rod; a screw manipulator formed with a central cavity passing axially therethrough and having a cylindrical sleeve and a slide; said cylindrical sleeve having a wall divided into two first wall segments by two diametrically opposite and axially extending windows that open out in a proximal end face of said sleeve; proximal ends of said first wall segments forming grip elements which, during a screw manipulation, receive between them at least a longitudinal portion of said screw head; and said slide being a hollow cylinder having a wall divided into two second wall segments by two diametrically opposite and axially extending windows opening out in a proximal end face of said hollow cylinder, said second wall segments being guided in an axially displaceable manner in said windows of said sleeve, and proximal end faces of said second wall segments each forming a holding-down element, one of said first wall segments or said second wall segments each having a respective axially extending rib protruding from a side edge thereof facing in a circumferential direction of said screw manipulator, and side edges of respective other wall segments of said first wall segments or said second wall segments each having a respective axially extending groove being formed therein, which said respective rib engages axially displaceably with a form fit effective in the circumferential direction; said slide being displaceable on said sleeve in the axial direction and being connected to and securing said first wall segments against moving radially apart at least in a proximal end position of displacement.