发明名称 |
Locking dovetail and self-limiting set screw assembly for a spinal stabilization member |
摘要 |
A spinal implant assembly is provided which has a stabilizer rod clamped into position within an anchor by means of a sliding closure member including a mating set screw or hook. The exterior faces of the anchor are contoured to optimize interface in the surgical setting. The anchor includes a U-shaped channel having multiple undercut surfaces such as grooves, which mate with flange like projections or "dovetails" of a closure member which is slid in a direction corresponding to the longitudinal axis of the rod. The closure member has on either side a flange mating with opposing recesses formed at the top of the U-shaped channel so as to lock the closure member in place. The set screw has an external hex head for tightening, and a plurality of radically extending prongs which are undercut and which mate with the recesses in the top of the U-shaped channel of the anchor. The hex head sheers at a necked area above the radial collar to provide for a flush surface relative to the closure member. The undercuts on the prongs allow the set screw to be unscrewed from the closure member.
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申请公布号 |
US6302888(B1) |
申请公布日期 |
2001.10.16 |
申请号 |
US19990272493 |
申请日期 |
1999.03.19 |
申请人 |
INTERPORE CROSS INTERNATIONAL |
发明人 |
MELLINGER PHILIP A.;KNOTH DONALD B. |
分类号 |
A61B17/70;A61B17/86;A61B19/00;(IPC1-7):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 |
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