发明授权
US08992587B2 Spinal facet compression screw with variable pitch thread zones and buttress head
有权
具有可变节距螺纹区域和支撑头的脊骨小面压紧螺钉
- 专利标题： Spinal facet compression screw with variable pitch thread zones and buttress head
- 专利标题（中）： 具有可变节距螺纹区域和支撑头的脊骨小面压紧螺钉
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申请号： US13184862申请日： 2011-07-18
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公开(公告)号： US08992587B2公开(公告)日： 2015-03-31
- 发明人: David Louis Kirschman
- 申请人： David Louis Kirschman
- 申请人地址： US OH Miamisburg
- 专利权人： X-spine Systems, Inc.
- 当前专利权人： X-spine Systems, Inc.
- 当前专利权人地址： US OH Miamisburg
- 代理机构： Jacox, Meckstroth & Jenkins
- 主分类号： A61B17/58
- IPC分类号： A61B17/58 ; A61B17/86 ; A61B17/70 ; A61B17/88
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.
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