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    • 7. 发明授权
    • Fluid-powered elongation instrumentation for correcting orthopedic deformities
    • 用于矫正矫形畸形的流体动力伸长仪器
    • US09060810B2
    • 2015-06-23
    • US12474109
    • 2009-05-28
    • James KercherJohn Heflin
    • James KercherJohn Heflin
    • A61B17/70A61B17/00
    • A61B17/7017A61B17/7011A61B17/7014A61B17/7016A61B2017/00539
    • Growing rod systems and methods for correcting spinal deformities include at least one growing rod assembly and at least one fluid delivery assembly. Each growing rod assembly includes a fluid actuator that is operable to extend first and second rod segments in opposite directions along the spine. The fluid actuator can be provided by, for example, a piston-cylinder actuator. Each fluid delivery assembly includes a fluid pump operably connectable to a fluid line, which in turn is connected to the fluid actuator. In one embodiment, the fluid actuator is of a linear design. In another embodiment, two linear or curvilinear fluid actuators are provided back-to-back and connected by a connecting rod that mounts to the mid-spine and is contourable. In another embodiment, the fluid actuator is of a curvilinear design to generally conform the normal spine. And in another embodiment, the fluid actuator includes a fluid-over-fluid shock absorber.
    • 用于矫正脊柱畸形的生长杆系统和方法包括至少一个生长杆组件和至少一个流体递送组件。 每个生长杆组件包括流体致动器,其可操作以沿着脊柱沿相反方向延伸第一和第二杆段。 流体致动器可以由例如活塞 - 缸致动器提供。 每个流体输送组件包括可操作地连接到流体管线的流体泵,流体管路又连接到流体致动器。 在一个实施例中,流体致动器具有线性设计。 在另一个实施例中,两个线性或曲线流体致动器被背对背地设置并通过连接杆连接,该连接杆安装到中脊并且是可轮廓的。 在另一个实施例中,流体致动器具有通常符合正常脊柱的曲线设计。 并且在另一个实施例中,流体致动器包括流体超流体减震器。