Patent ID: 7217057
Filing Date: 2007-05-15
Classification: A61B,A61F,F16B,Y10T

Abstract:
1. A surgical implant or instrument comprising an upper part and a lower part each adapted for sliding on the other, the lower part having a blind threaded bore formed therethrough and the upper part having a passage orifice formed therein for receiving a fixing screw, a threaded fixing screw and an elastic device configured for pushing the fixing screw into a fixing position located between the bottom of the threaded bore and the bottom of the fixing screw, wherein the fixing screw is configured as a set screw and has a length such that the threaded bore can receive the fixing screw over its entire length beneath the upper part in the threaded bore, wherein the fixing screw comprises a dog point at an upper end of the fixing screw which is thinner than the threaded portion of the fixing screw and is configured for receiving a screwdriver, and wherein the diameter of the passage orifice has an inner diameter that is smaller than an inner diameter of the threaded bore and is larger than the diameter of the dog point.