TOWER TOOL FOR MINIMALLY INVASIVE SURGERY

摘要

A rod reduction tool assembly includes an outer tube with outer tangs for engaging a bone anchor, an inner partially tubular pin support and a threaded cap mated to the outer tube and engaging the inner pin support.

主权项

1. In a medical implant holding tool having engagement structure at a lower end thereof operably mateable with opposed arms of an open receiver of a bone anchor, the receiver opposed arms defining a channel for receiving a longitudinal connecting member, the improvement comprising:
a) an elongate outer holding tool with an upper tubular portion having a top surface and a first helical thread, the tubular portion terminating at a pair of opposed downwardly extending tangs located opposite the top surface, each tang having an aperture and the engagement structure for mating with one of the arms of the bone anchor receiver; and b) a cap having a bottom surface and a second helical thread sized and shaped for mating engagement with the first helical thread of the outer holding tool, the cap bottom surface engageable with an elongate portion and wherein rotation of the cap with respect to the outer holding tool moves the elongate portion downwardly into a location against an outer surface of the bone anchor, thereby rotationally fixing the holding tool tangs with respect to the bone anchor.