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11. 发明申请

US20060009775A1 Spinal rod insertion instrument 有权
标题翻译：脊柱插入仪
公开(公告)号：US20060009775A1
公开(公告)日：2006-01-12
申请号：US10886328
申请日：2004-07-06
申请人： Brian Dec , Stuart Weikel , Ernest Corrao , Alan Bachman
发明人： Brian Dec , Stuart Weikel , Ernest Corrao , Alan Bachman
IPC分类号： A61F5/00
CPC分类号： A61B17/7088 , A61B17/7032
摘要： A surgical instrument is provided for urging a longitudinal spinal member into a bone fastener. The surgical instrument may include a holder assembly for engaging a bone fastener, the holder assembly preferably comprising a pair of pivotably connected members arranged in a scissor type configuration, and a reducing mechanism for moving the spinal rod with respect to the bone fastener, the reducing mechanism including a rod contacting member and an outer support structure having an opening for receiving at least a portion of the holder assembly and a cavity for receiving at least a portion of the vertical drive mechanism which is sized and configured to threadably engage the holder assembly. The holder assembly preferably includes a pair of jaws each having an extension formed thereon for engaging a recess formed on the lateral side walls of the bone fastener so that the holder assembly can engage the bone fastener without extending into the U-shaped channel. More preferably, the jaws may be sized and configured to engage only one of the side walls formed on the head of the bone fastener. The surgical instrument may further include a horizontal drive mechanism for aligning a laterally offset spinal rod with respect to the bone fastener.
摘要翻译：提供了用于将纵向脊柱构件推入骨紧固件的手术器械。外科器械可以包括用于接合骨紧固件的保持器组件，保持器组件优选地包括以剪刀式构造布置的一对可枢转连接的构件，以及用于相对于骨紧固件移动脊柱杆的减速机构，包括杆接触构件和外部支撑结构的机构，所述外部支撑结构具有用于容纳保持器组件的至少一部分的开口和用于容纳垂直驱动机构的至少一部分的空腔，所述至少一部分的尺寸和构造与螺纹接合保持器组件。保持器组件优选地包括一对钳口，每个钳口具有形成在其上的延伸部，用于接合形成在骨紧固件的侧壁上的凹部，使得保持器组件可以接合骨紧固件而不延伸到U形通道中。更优选地，钳口的尺寸和构造可以仅与形成在骨紧固件的头部上的侧壁中的一个接合。外科器械还可以包括水平驱动机构，用于使横向偏移的脊柱杆相对于骨紧固件对准。

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