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公开(公告)号:US07722647B1
公开(公告)日:2010-05-25
申请号:US11079755
申请日:2005-03-14
申请人: Jeffery C. Wang , T. Wade Fallin , Robert W. Hoy , Alan Chervitz
发明人: Jeffery C. Wang , T. Wade Fallin , Robert W. Hoy , Alan Chervitz
IPC分类号: A61B17/70
CPC分类号: A61F2/4405 , A61F2002/30578
摘要: A facet joint replacement implant may have a posterior stabilization surface designed to restrict posterior motion of a vertebra with respect to an adjacent, inferior vertebra. The facet joint replacement implant replaces the natural articular surface of one of the vertebrae, and articulates with a natural articular surface or with an articular surface of a second implant on the other vertebra. The posterior stabilization surface may be on a posterior flange of a superior facet joint implant, which extends posteriorly of a corresponding inferior facet joint implant. The inferior facet joint implant has an abutment surface that abuts the posterior stabilization surface as the superior vertebra begins to move posteriorly with respect to the inferior vertebra, thereby limiting the posterior motion.
摘要翻译: 小关节置换植入物可具有设计用于限制椎骨相对于相邻的下椎骨的后运动的后稳定表面。 小关节置换植入物替代椎骨中的一个的天然关节表面,并且与天然关节表面或与另一椎骨上的第二植入物的关节表面相关联。 后稳定表面可以在上小面关节植入物的后凸缘上,其在相应的下小面关节植入物的后方延伸。 下小面关节植入件具有邻接后稳定表面的邻接表面,因为上脊椎开始相对于下椎骨向后移动,从而限制后运动。