Patent ID: 8992544
Filing Date: 2015-03-31
Classification: A61B

Abstract:
1. In combination, a tool with a set screw for use in spinal implant systems, comprising: a tool having a handle portion and a stem portion extending from said handle portion; a set screw having an axial bore, a head portion, a break-off neck portion, a threaded screw portion extending from said neck portion, and an internal peripheral notch formed at an upper portion of the head portion; a retaining means provided on said stem portion to allow handling and installation of said set screw, said retaining means comprising at least one flexible arm formed proximate the side portion of said stem portion defining a gap therebetween, said at least one flexible arm having an outwardly directed flange portion formed at the tip thereof, said flange portion being adapted to interlock with said internal peripheral notch of the head portion when said set screw is to be installed in the bone screw or hook; and a driving means provided on said tool to allow the installation of said set screw to a bone screw or hook, apply torque for the shearing of the neck portion of said set screw, and remove the installed screw portion of said set screw on said bone screw or hook.