发明授权
- 专利标题: Intervertebral implant having back-out prevention feature
- 专利标题(中): 椎间植入物具有退出防止功能
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申请号: US13211872申请日: 2011-08-17
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公开(公告)号: US08753396B1公开(公告)日: 2014-06-17
- 发明人: Brian E. Hockett , Abid Qureshi , Steven Lee , Jeffrey A. Russo , Peter A. Materna
- 申请人: Brian E. Hockett , Abid Qureshi , Steven Lee , Jeffrey A. Russo , Peter A. Materna
- 申请人地址: US CA Vista
- 专利权人: Theken Spine, LLC
- 当前专利权人: Theken Spine, LLC
- 当前专利权人地址: US CA Vista
- 代理机构: Middleton Reutlinger
- 代理商 Robert H. Eichenberger; Chad D. Bruggeman
- 主分类号: A61F2/44
- IPC分类号: A61F2/44
摘要:
A spinal implant for implantation in an intervertebral space is provided, such that the implant may provide a back-out prevention feature and may also provide a visual indication of whether the back-out prevention feature is engaged. The visual indication may be a contrast between a circular visible shape of the screw head and a non-circular visible shape of the screw head. The back-out prevention feature may provide engagement of a tapered thread in the screw head with an internal thread of the implant. A hard stop may also be provided. Such back-out prevention feature may also provide a torque-based indication of engagement or non-engagement of the back-out prevention feature. The implant may possess a polymeric posterior body joined to a metallic anterior body.