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    • 9. 发明授权
    • Mobile spine stabilization device
    • 移动脊柱稳定装置
    • US08216280B2
    • 2012-07-10
    • US11919778
    • 2006-05-04
    • Patrick M. White
    • Patrick M. White
    • A61B17/70A61B17/68
    • A61B17/702A61B17/7004A61B17/7011A61B17/7029A61B17/7031A61B17/7032A61B17/7046A61B2017/00867
    • An orthopedic device is described for stabilizing the spinal column between first and second vertebral bodies. The device has first and second screws adapted for fixation to the first and second vertebral bodies, respectively. The device further includes an elongated ligament with a first end connected to the first screw and the second end operatively connected with the second screw. The ligament is made preferably of a nickel titanium alloy selected to have ductile inelastic properties at body temperature and is capable of plastic deformation to allow relative constrained motion between the vertebral bodies. The preferred nickel titanium has a martensite/austenite transition temperature above body temperature. In a preferred embodiment, the second pedicle screw includes a bearing for receiving the ligament in a slidably engageable relationship. The device further includes optional first and second dampening members surrounding the ligament for restraining the spinal column during flexion and extension.
    • 描述了一种用于在第一和第二椎体之间稳定脊柱的整形外科装置。 该装置具有分别用于固定到第一和第二椎体的第一和第二螺钉。 该装置还包括细长的韧带,其第一端连接到第一螺钉,第二端与第二螺钉可操作地连接。 该韧带优选由选择为在体温下具有延性非弹性性能的镍钛合金制成,并且能够进行塑性变形以允许椎体之间的相对受限的运动。 优选的镍钛具有高于体温的马氏体/奥氏体转变温度。 在优选实施例中,第二椎弓根螺钉包括用于以可滑动接合的关系接收韧带的轴承。 该装置还包括围绕韧带的可选的第一和第二阻尼构件,用于在弯曲和伸展期间限制脊柱。