发明名称 |
Method and apparatus for retaining screws in a plate |
摘要 |
A retention system for maintaining a screw to a vertebral plate. One or more screws extend through apertures within the vertebral plate. A cavity is positioned adjacent to and overlaps into the aperture. A ring is positioned within the cavity and held in position by a cap. The cap attaches to the plate to prevent removal of the ring. The ring is deflectable between a first shape to allow the screw to be inserted and removed from the aperture, and a second shape to prevent screw back-out from the aperture. A method of using the system is also included and comprises positioning the ring within a cavity in the plate, maintaining the position of the ring to the plate by attaching a cap, inserting a screw through the aperture and attaching the plate to a vertebral member, and positioning the ring over the screw head and preventing the screw from backing-out.
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申请公布号 |
US2005283152(A1) |
申请公布日期 |
2005.12.22 |
申请号 |
US20040870026 |
申请日期 |
2004.06.17 |
申请人 |
LINDEMANN GARY S;GAUSE LARRY;FARRIS ROBERT A;HAID REGIS W JR;PAPADOPOULOS STEVE;SASSO RICK;SONNTAG VOLKER;TRAYNELIS VINCE;KALFAS IAIN |
发明人 |
LINDEMANN GARY S.;GAUSE LARRY;FARRIS ROBERT A.;HAID REGIS W.JR.;PAPADOPOULOS STEVE;SASSO RICK;SONNTAG VOLKER;TRAYNELIS VINCE;KALFAS IAIN |
分类号 |
A61B17/70;A61B17/80;(IPC1-7):A61B17/70 |
主分类号 |
A61B17/70 |
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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