发明名称 |
Multidirectional pivoting bone screw and fixation system |
摘要 |
A double-jointed bone bolt for use in an apparatus for maintaining vertebra in a desired relationship. The apparatus has a rod that extends substantially along the spine and one or more bone bolts. At least one of the bone bolts is double jointed. The double-jointed bolt has a mounting portion with a hook or coarse threads to engage a vertebra, and the mounting portion is attached to a pivot post in a manner that allows the pivot post to be rotatable about a common axis in respect to the mounting portion. The pivot post of the bone bolt is then pivotally attached to a connector portion of the bone bolt that has machine threads upon which a surgeon may attach a clamp. The clamp has a second bolt and an arm. The second bolt holds the rod and the arm to the clamp. The second bolt has a first channel to attach to the rod, while the arm has a second channel to attach the double-jointed bone bolt.
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申请公布号 |
US6309391(B1) |
申请公布日期 |
2001.10.30 |
申请号 |
US20000526435 |
申请日期 |
2000.03.15 |
申请人 |
SDGI HOLDING, INC. |
发明人 |
CRANDALL DENNIS;MORRISON MATTHEW M.;STROHKIRCH TERRANCE |
分类号 |
F16B35/04;A61B17/58;A61B17/70;F16B35/06;(IPC1-7):A61B17/56 |
主分类号 |
F16B35/04 |
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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