Frank Spratt,Thibault Chandanson,Ernest Quintanilha,Shawn D. Stad,Ralf Klabunde
申请号：
US13828882
公开号：
US09775660B2
申请日:
2013.03.14
申请国别(地区):
US
年份:
2017
代理人:
摘要：
Bone anchor assemblies and methods are provided having a multi-component bone anchor that is configured to allow the shank of the bone anchor to be bottom loaded into a receiver member. In one embodiment, a bone anchor assembly is provided having a shank with a distal threaded portion and a proximal head portion, a ball having a spherical exterior surface and a central lumen sized to receive the head portion of the shank, and a clip configured to be engaged between the head portion and the ball such that the clip is effective to lock the ball in engagement with the shank.
