发明名称 |
SPINAL FACET COMPRESSION SCREW WITH VARIABLE PITCH THREAD ZONES AND BUTTRESS HEAD |
摘要 |
A surgical implant comprising a screw element having a screw head, a first thread having a first thread pitch, a second thread having a second thread pitch and an intermediate portion coupling the first and second thread pitches with the first and second thread pitches being different. The implant has a buttressing head associated with the first thread, and it is dimensioned to be larger than a diameter of the first threads to provide external buttressing as the first and second threads compress a first bone and a second bone together. |
申请公布号 |
WO2012012328(A1) |
申请公布日期 |
2012.01.26 |
申请号 |
WO2011US44353 |
申请日期 |
2011.07.18 |
申请人 |
X-SPINE SYSTEMS, INC.;KIRSCHMAN, DAVID, LOUIS |
发明人 |
KIRSCHMAN, DAVID, LOUIS |
分类号 |
A61B17/86;A61B17/70 |
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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