Patent ID: 8623061
Filing Date: 2014-01-07
Classification: A61B

Abstract:
1. A bone screw comprising: an elongate screw portion, said screw portion having a head and a threaded portion; a cylindrical element pivotably secured to said head, said cylindrical element including a receiving portion for receiving a rod, said cylindrical element having a substantially U-shaped cross section including two upwardly extending legs, said legs having threads on an exterior portion thereof, said cylindrical element including a saddle assembly positioned at a lower portion of said cylindrical element, said saddle assembly including a plurality of retention members, said retention members are constructed and arranged to retain a rod when inserted in said saddle assembly; wherein each leg of said retention members is substantially U-shaped, wherein said retention members are positioned within said saddle assembly with the open ends of said u-shaped retention members facing away from said bone screw and are in a position to accept a rod which can be inserted therein, wherein each retention member is rotated within said saddle assembly such that the open ends of each of said U-shaped retention member faces each other so as to retain a rod therein and a reduction sleeve threadably secured to said upwardly extending legs, said reduction sleeve, said reduction sleeve retaining a rod secured in said saddle assembly when said reduction sleeve is screwed toward said screw portion.