发明名称 |
Polyaxial bone anchor with articulating retainer and multi-start closure |
摘要 |
An open polyaxial bone anchor includes a pre-assembled receiver, retaining member and compression insert that may be popped-on or snapped-on to the shank upper portion prior to or after implantation of the shank into a vertebra. Cooperating closures have at least two helically wound forms thereon providing a multi-start closing mechanism for use between spaced arms of the bone anchor having mating helically wound structure thereon.
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申请公布号 |
US2013131730(A1) |
申请公布日期 |
2013.05.23 |
申请号 |
US201313694850 |
申请日期 |
2013.01.10 |
申请人 |
JACKSON ROGER P.;SURBER JAMES L. |
发明人 |
JACKSON ROGER P.;SURBER JAMES L. |
分类号 |
A61B17/70 |
主分类号 |
A61B17/70 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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