Patent ID: 7637741

Claim:
An orthodontic anchor comprising a tac for piercing bone, an anchor screw spaced from said tack and for piercing bone more deeply than said tac, the diameter of said anchor screw being greater than the diameter of said tac, said tac and said anchor screw interconnected by a flat plate, said flat plate being rotatable with the axis of said tac being the center of rotation, the end of the tac that will project from said bone in use includes an elongated angular multi-sided orthodontic attachment head, a cap enveloping said orthodontic attachment head, said cap being formed of upper and lower sections interconnected by means of a pair of inwardly bowed pillars, the shortest distance between said pillars being greater than the distance between opposing sides of said orthodontic attachment head, an “O” ring extending around said pillars, said “O” ring being thicker along one axis than the axis disposed perpendicular thereto, said thicker portions of said O-ring being disposed intermediate said pillars, a groove formed in said orthodontic attachment head, and said thicker sections being disposed in said groove to hold said cap in place.