发明名称 |
POLYAXIAL BONE ANCHOR WITH POP-ON SHANK AND WINGED INSERT WITH FRICTION FIT COMPRESSIVE COLLET |
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 has a lower friction fit collet and an outer receiver press fit surface. A down-loadable retaining ring has at least one inner edge and outer tiered surfaces. The ring cooperates with the shank 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. A uni-planar assembly is included.
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申请公布号 |
US2013023941(A1) |
申请公布日期 |
2013.01.24 |
申请号 |
US201213573516 |
申请日期 |
2012.09.19 |
申请人 |
JACKSON ROGER P.;SURBER JAMES L. |
发明人 |
JACKSON ROGER P.;SURBER JAMES L. |
分类号 |
A61B17/86;B23P11/00 |
主分类号 |
A61B17/86 |
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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