Patent ID: 9192412
Filing Date: 2015-11-24
Classification: A61B

Abstract:
1. An anchor member for vertebral osteosynthesis equipment, comprising: an anchoring base including a peripheral proximal wall that inwardly delimits a proximal cavity, and a proximal stud including a distal articulation portion received in said proximal cavity, said proximal wall including a peripheral proximal rim oriented toward the axis of said proximal cavity, ensuring retention of said distal articulation portion in that proximal cavity; said proximal cavity has an axis, said proximal wall has an inner surface on a side of said proximal cavity, and said proximal stud has a longitudinal axis; wherein: the distal articulation portion has a peripheral edge dimensioned to come into the immediate vicinity of the inner surface of said proximal wall, and has a convex distal surface having an apex, said apex being situated substantially at the axis of the proximal stud; and the anchor member comprises an elastically deformable element placed in the bottom of said proximal cavity, having a curved shape and an apex, said apex of said elastically deformable element being situated substantially at the axis of said proximal cavity, said convex distal surface bearing against said elastically deformable element, and the latter being permanently elastically deformed such that it continuously presses said distal articulation portion against said peripheral proximal rim in order to generate friction between said distal articulation portion and said peripheral proximal rim capable of keeping the proximal stud in a predetermined position without preventing the stud from moving into another position.