Patent ID: 9138265
Filing Date: 2015-09-22
Classification: A61B

Abstract:
1. An apparatus for visualizing insertion of a fixation element into a screw implant, the apparatus comprising: an extension tube having a proximal end and a distal end opposite the proximal end, the proximal end of the extension tube having at least one slot defined therein and the distal end of the extension tube configured for coupling to a receiver element that has a transverse passage and is connected to a bone screw of the screw implant; and a steering control member comprising a proximal end, a distal end opposite the proximal end, a tubular extension extending from the proximal end of the steering control member to the distal end of the steering control member, and at least one elongated tab projecting along an outer surface of the tubular extension from a proximal end of the tubular extension toward a distal end of the tubular extension, wherein a distal end of the at least one elongated tab is positioned intermediate the proximal and distal ends of the tubular extension, wherein the at least one slot receives the at least one elongated tab therein and fixes the extension tube relative to the steering control member, wherein the tubular extension has a hollow interior, and wherein the tubular extension of the steering control member forms a plug, the plug having an outer diameter equal to or less than an inner diameter of the proximal end of the extension tube, wherein the plug is inserted into the proximal end of the extension tube in a snug fit.