Patent ID: 8900277
Filing Date: 2014-12-02
Classification: A61B

Abstract:
1. A bone plate system comprising: an elongate bone plate having a longitudinal axis; a throughbore of the bone plate having a predetermined axial length along the bone plate axis with the throughbore having a pair of opposite axial end portions along the axial length of the throughbore; a bone anchor; an enlarged head of the bone anchor for being received in the throughbore; a resilient retainer disposed in the throughbore; a pair of elongate arm portions of the resilient retainer extending along opposite sides of the throughbore; interference portions of the elongate arm portions disposed in the throughbore to be adjacent or in a predetermined one of the axial end portions of the throughbore; bone plate engaging portions of the resilient retainer at the other axial end portion of the throughbore with the other axial end portion of the throughbore and the bone anchor head being configured and sized relative to each other to allow the bone anchor to extend obliquely in the throughbore with a raised portion of the bone anchor head generally level with the retainer bone plate engaging portions at the other axial end portion of the throughbore and a lowered portion of the bone anchor head disposed below the retainer interference portions in the throughbore so that the retainer interference portions are in interference with the bone anchor head lowered portion to resist back-out of the bone anchor from the throughbore; and the retainer interference portions and bone anchor head are configured so that with the interference portions extending above the lowered portion of the bone anchor head no portion of the bone anchor head extends over the interference portions.