发明名称 |
POLYAXIAL BONE ANCHOR WITH RETAINER WITH NOTCH FOR MONO-AXIAL MOTION |
摘要 |
A polyaxial bone screw assembly includes a threaded shank body having an integral upper portion receivable in an integral receiver, the receiver having an upper channel for receiving a longitudinal connecting member and a lower cavity cooperating with a lower opening. A down-loadable compression insert having a sub-structure, a down-loadable friction fit split retaining ring having inner and outer tangs and an up-loadable shank upper portion cooperate to provide for pop- or snap-on assembly of the shank with the receiver either prior to or after implantation of the shank into a vertebra. The shank and receiver once assembled cannot be disassembled. |
申请公布号 |
US2015257792(A1) |
申请公布日期 |
2015.09.17 |
申请号 |
US201514674517 |
申请日期 |
2015.03.31 |
申请人 |
Jackson Roger P.;Surber James L. |
发明人 |
Jackson Roger P.;Surber James L. |
分类号 |
A61B17/70;A61B17/86 |
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 |
Prairie Village KS US |