发明名称 |
OSTEOSYNTHESIS SCREW, ESPECIALLY FOR APPLICATION BY A TRANSLAMINAR VERTEBRAL SCREW |
摘要 |
An osteosynthesis screw (1) used especially for application by a translamina r vertebral screw, comprises a shaft (3) at least partially provided with a thread (2) and a head (4) formed at one of its ends and having a notch (5) f or a tool. Said shaft (3) has a section (A) with a thread (2) on the end sectio n oriented towards the head (4). The remaining section (B) of the shaft (3) up to the free end is produced without a thread. The head (4) has a diameter (D 1) corresponding at least approximately to the outer diameter (DA) of the threa d (2) and is provided with the inner notch (5) for a tool. The section (A) of the shaft (3) with the thread (2) has a configuration of uniform thickness, e.g. a trilobular configuration. Thus, the invention provides an osteosynthesis screw (1) exhibiting a short section (A) with a thread (2) an d a long section (B) without a thread, said screw having a pull-out head (4) which is secured both axially and rotationally. |
申请公布号 |
CA2336934(A1) |
申请公布日期 |
2000.01.27 |
申请号 |
CA19992336934 |
申请日期 |
1999.07.09 |
申请人 |
SEPITEC FOUNDATION |
发明人 |
MAGERL, FRITZ;WINTERMANTEL, ERICH;MAYER, JORG;SPIRIG, WALTER;TOGNINI, ROGER ROLAND;DRANSFELD, CLEMENS |
分类号 |
F16B35/04;A61B17/58;A61B17/68;A61B17/86;A61B17/88;A61B19/00;F16B39/28 |
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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