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    • 29. 发明授权
    • Pedicle screw with a closure device for the fixing of elastic rod elements
    • 具有用于固定弹性杆元件的闭合装置的椎弓根螺钉
    • US07597707B2
    • 2009-10-06
    • US10965841
    • 2004-10-18
    • Stefan Freudiger
    • Stefan Freudiger
    • A61B17/70
    • A61B17/7005A61B17/7031A61B17/7032
    • A pedicle screw with a closure device including a seat element and a closure cap for quick closure of the seat element of the pedicle screw. An elastic rod element inserted therein in the seat recess, which element serves to stabilize a vertebral column, is held in a form-locking way. The closure cap of the closure device has the function of a cross-brace, and can transfer the forces absorbed by it from the rod element to the pedicle screw. Disposed on the closure cap with a holding recess are engagement elements which, during insertion of the closure cap, automatically lock in place in a stable position in the seat element provided with a U-shaped seat recess. The seat recess and the holding recess preferably have a ridged or grooved structure corresponding to the rod element used.
    • 具有闭合装置的椎弓根螺钉,其包括座位元件和用于快速关闭椎弓根螺钉的座椅元件的封闭盖。 插入其中的弹性杆元件被保持在形式锁定方式中,该座部凹部中的该元件用于稳定脊柱。 闭合装置的封闭帽具有交叉支撑的功能,并且可以将其从杆元件吸收的力传递到椎弓根螺钉。 在具有保持凹部的封闭盖上设置有接合元件,其在插入封闭盖时自动锁定在设置有U形座部凹部的座椅元件中的稳定位置。 座椅凹部和保持凹部优选地具有对应于所使用的杆元件的脊状或凹槽结构。