发明名称 |
DEVICE AND SYSTEM FOR IMPLANTING POLYAXIAL BONE FASTENERS |
摘要 |
A device, is provided for implanting in bony tissue a bone fastener rotatably connected to a collar. The sleeve is configured for threaded connection to the collar and has a central bore aligned with the longitudinal axis of the sleeve for receiving an inner shaft. The inner shaft inserts in the sleeve and has a distal end configured for connection to a portion of the bone fastener, such as an internal hex feature. In some embodiments a movable member may be inserted in an opening transverse the central bore and positionable to either rotatably or fixedly connect the inner shaft to the sleeve. In other embodiments, a collet nut threads onto a collet thread to radially compress sleeve tangs to frictionally engage inner shaft to sleeve.
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申请公布号 |
US2009005787(A1) |
申请公布日期 |
2009.01.01 |
申请号 |
US20070770560 |
申请日期 |
2007.06.28 |
申请人 |
CRALL ANGELA;FISHER LARRY O |
发明人 |
CRALL ANGELA;FISHER LARRY O. |
分类号 |
A61B17/04;A61B17/56;A61B17/58 |
主分类号 |
A61B17/04 |
代理机构 |
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