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    • 7. 发明授权
    • Multi-angle bone screw assembly using shape-memory technology
    • 使用形状记忆技术的多角度骨螺钉组件
    • US06287311B1
    • 2001-09-11
    • US09595047
    • 2000-06-12
    • Michael C. ShermanTroy Drewry
    • Michael C. ShermanTroy Drewry
    • A61B1770
    • A61B17/7037A61B17/7032A61B17/7038A61B2017/00867Y10S411/909Y10S606/911
    • In one embodiment, a spinal fixation assembly includes an elongated member, such as a spinal rod, configured for placement adjacent the spine and a bone engaging fastener, such as a bone screw having a lower portion configured for engaging a vertebra and a head that is at least partially spherical. The assembly further includes a receiver member defining a bore therethrough from a top end to a bottom end, a recess for receiving the head of the bone screwing fastener therein, and a lower opening at said bottom end of the receiver member through which the bone screw extends. The recess is configured to at permit pivoting of the bone screw within the receiver member until the head is fixed within the recess. The receiver member also includes a channel communicating with the bore and having an upper opening at the top end of the receiver member for insertion of the spinal rod into the channel. In one embodiment, two compression members are provided, each being formed of a temperature responsive material and having a first configuration at a first temperature and a different second configuration at a different second temperature in which the compression member contracts about a portion of the receiver member to thereby compress the receiver member about both the head of the bone screw within the recess and the spinal rod within the channel.
    • 在一个实施例中,脊柱固定组件包括细长构件,例如脊骨杆,其构造成用于邻近脊柱放置,以及骨接合紧固件,例如骨螺钉,其具有构造成用于接合椎骨的下部分和头部, 至少部分是球形的。 所述组件还包括限定从顶端到底端穿过其中的孔的接收器构件,用于容纳所述骨螺钉紧固件的头部的凹部,以及在所述接收器构件的所述底端处的下开口,所述骨螺钉 延伸。 该凹部构造成允许骨螺钉在接收器构件内枢转,直到头部固定在凹槽内。 接收器构件还包括与孔连通并且在接收器构件的顶端具有用于将脊柱杆插入通道中的上开口的通道。 在一个实施例中,提供两个压缩构件,每个压缩构件由温度响应材料形成,并且在不同的第二温度下具有在第一温度和不同的第二构造的第一构型,其中压缩构件围绕接收构件的一部分收缩 从而将接收器构件围绕凹槽内的骨螺钉的头部和通道内的脊柱杆压缩。
    • 8. 发明授权
    • Device for linking adjacent rods in spinal instrumentation
    • 用于连接脊柱器械中的相邻杆的装置
    • US5947966A
    • 1999-09-07
    • US946954
    • 1997-10-08
    • Troy DrewryMichael C. ShermanJames E. Van HoeckDenis S. DrummondDavid L. BrumfieldM. Neil Anderson
    • Troy DrewryMichael C. ShermanJames E. Van HoeckDenis S. DrummondDavid L. BrumfieldM. Neil Anderson
    • A61B17/70A61B17/58
    • A61B17/7052
    • One embodiment of a spinal fixation system including a pair of longitudinal members 11, 12 positionable adjacent the spine, means for engaging longitudinal members to the spine 13, 14, a pair of wedge members 241 each having a bearing surface 242 configured to bear on a longitudinal member 11, 12, and a connector 200 configured to span a distance between the longitudinal members 11, 12. The connector 200 includes a pair of engaging members 205, 212 each having a fixation portion 207, 214 and a connecting portion 209, 216, and a bridge members 202 attachable to the connecting portions 209, 216. The engaging members 205, 212 each define a thru-hole 225 for receiving one of the wedge members 241. The thru-holes 225 are aligned so that when one of the wedge members 241 is advanced through the thru-hole 225, the bearing surface 242 will bear on a corresponding longitudinal member 11, 12 to force the longitudinal member 11, 12 into contact with the fixation surface 220, 221 and engage the longitudinal member 11, 12 to the connector 200. In a specific embodiment, the bridge member 200 defines a slot 203 and a fastener bore 227 having an axis D' intersecting the slot 203. In this embodiment, the second connecting portion 216 is insertable into the slot 203 to intersect the axis D' of the bone 227, whereby a fastener 230 received in the bore 227 will clamp the second connecting portion 216 to the bridge member 202.
    • 一种脊柱固定系统的一个实施例,其包括可邻近脊柱定位的一对纵向构件11,12,用于将纵向构件接合到脊柱13,14的一对楔形构件241,每个楔形构件241具有构造成承受 纵向构件11,12和连接器200构造成跨越纵向构件11,12之间的距离。连接器200包括一对接合构件205,212,各自具有固定部分207,214和连接部分209,216 以及可连接到连接部分209,261的桥构件202.接合构件205,212各自限定用于容纳楔形构件241中的一个的通孔225.通孔225对准,使得当 楔形构件241推进穿过通孔225,支承表面242将承载在相应的纵向构件11,12上,以迫使纵向构件11,12与固定表面220,221接触并接合lo 纵向构件11,12连接到连接器200.在具体实施例中,桥构件200限定狭槽203和具有与槽203相交的轴线D'的紧固件孔227.在该实施例中,第二连接部分216可插入 槽203与骨227的轴线D'相交,由此容纳在孔227中的紧固件230将夹紧第二连接部分216到桥构件202。
    • 9. 发明授权
    • Multi-axial screw
    • 多轴螺丝
    • US5891145A
    • 1999-04-06
    • US892582
    • 1997-07-14
    • Matthew MorrisonMichael C. ShermanTroy Drewry
    • Matthew MorrisonMichael C. ShermanTroy Drewry
    • A61B17/58A61B17/70
    • A61B17/7037A61B17/7038A61B17/7032
    • A spinal fixation assembly is provided that includes a bone engaging fastener and an elongated member, such as a spinal rod. The fixation assembly is a multi-axial assembly that permits fixation of the bone engaging fastener to the spinal rod at any of a continuous range of angles relative to the rod in three-dimensional space. The fixation assembly includes a receiver member having a bore therethrough, the walls of which are tapered near the bottom, and a channel communicating with the bore and having an upper opening at the top of the receiver member for insertion of a spinal rod. Also included are an outer wedge member and an inner wedge member, both of which have generally the shape of a washer and a bore therethrough. In each wedge member, the respective bore is not parallel to the central axis of the respective wedge member. Additionally, the outside surfaces of the wedge members may be tapered, and the respective bores may be tapered, so as to self-lock when seated and tightened. The bone engaging fastener fits within the bore of the inner wedge member, which in turn fits within the bore of the outer wedge member, which in turn fits within the tapered sides of the receiver member. When the desired position of the bone engaging fastener in three-dimensional space is attained, the components are seated to achieve a tight friction fit.
    • 提供脊柱固定组件,其包括骨接合紧固件和细长构件,例如脊椎杆。 固定组件是多轴向组件,其允许骨接合紧固件以三维空间中相对于杆的连续角度的任何角度固定到脊柱杆。 所述固定组件包括具有穿过其中的孔的接收器构件,其壁在底部附近是锥形的,以及与所述孔连通并且在所述接收器构件的顶部具有用于插入脊椎杆的顶部开口的通道。 还包括外部楔形构件和内部楔形构件,两者都具有大致垫圈的形状和穿过其的孔。 在每个楔形构件中,相应的孔不平行于相应楔形构件的中心轴线。 此外,楔形构件的外表面可以是锥形的,并且各个孔可以是锥形的,以便在就座和紧固时自锁。 骨接合紧固件装配在内楔构件的孔内,内楔形构件的孔又装配在外楔形构件的孔内,该锥形构件又装配在接收构件的锥形侧内。 当达到骨接合紧固件在三维空间中的期望位置时,组件就位以达到紧密的摩擦配合。