Patent ID: 6106526
Filing Date: 2000-08-22
Classification: A61B

Abstract:
A member for stabilizing cervical vertebrae, comprising:a body member having a plate-shaped first portion and a second portion, said first portion extending substantially in a plane of said plate and having a lower first side and an upper second side,a bore extending through said first portion in a direction substantially perpendicular to said plane, said second portion being laterally offset with respect to said bore in said plane,means projecting from said plane in said second portion and having external thread means with a thread axis and slit means extending in direction of said thread axis for receiving a fastening rod, said slit means being defined by opposite lateral walls of said projecting means,domed-cap nut means having a continuous exterior surface, an interior surface separated from said exterior surface without a throughhole connecting the interior and exterior surfaces, and internal thread means cooperating with said external thread means,a pressure pin having a first end and second end, said first end abutting said interior surface of said domed-cap nut means and said second end extending into said slit means while being guided by said lateral walls to lock a fastening rod inserted into said slit means when tightening said nut means, anda bone screw having a threaded portion and a head, said head being supported by said first portion of said body member and said threaded portion extending through said bore towards and from said lower first side of said first portion.