Polyaxial bone anchor having an open retainer with conical, cylindrical or curvate capture

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专利权人:

Roger P. Jackson

发明人:

Roger P. Jackson

申请号：

US13694954

公开号：

US20130138157A1

申请日:

2013.01.22

申请国别(地区):

US

年份:

2013

代理人:

摘要：

Polyaxial bone anchor assemblies include a shank having an upper portion and a retainer for holding the shank upper portion in a receiver. The shank upper portion retainer interface is one of conical, cylindrical or curvate and may further include a radial ridge or undercut. The assemblies may include compression inserts.

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中国工程科技知识中心

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